diff options
Diffstat (limited to 'deps/enet/src')
| -rw-r--r-- | deps/enet/src/callbacks.c | 53 | ||||
| -rw-r--r-- | deps/enet/src/compress.c | 654 | ||||
| -rw-r--r-- | deps/enet/src/host.c | 503 | ||||
| -rw-r--r-- | deps/enet/src/list.c | 75 | ||||
| -rw-r--r-- | deps/enet/src/packet.c | 163 | ||||
| -rw-r--r-- | deps/enet/src/peer.c | 1030 | ||||
| -rw-r--r-- | deps/enet/src/protocol.c | 1921 | ||||
| -rw-r--r-- | deps/enet/src/unix.c | 630 | ||||
| -rw-r--r-- | deps/enet/src/win32.c | 455 |
9 files changed, 0 insertions, 5484 deletions
diff --git a/deps/enet/src/callbacks.c b/deps/enet/src/callbacks.c deleted file mode 100644 index b3990af..0000000 --- a/deps/enet/src/callbacks.c +++ /dev/null @@ -1,53 +0,0 @@ -/** - @file callbacks.c - @brief ENet callback functions -*/ -#define ENET_BUILDING_LIB 1 -#include "enet/enet.h" - -static ENetCallbacks callbacks = { malloc, free, abort }; - -int -enet_initialize_with_callbacks (ENetVersion version, const ENetCallbacks * inits) -{ - if (version < ENET_VERSION_CREATE (1, 3, 0)) - return -1; - - if (inits -> malloc != NULL || inits -> free != NULL) - { - if (inits -> malloc == NULL || inits -> free == NULL) - return -1; - - callbacks.malloc = inits -> malloc; - callbacks.free = inits -> free; - } - - if (inits -> no_memory != NULL) - callbacks.no_memory = inits -> no_memory; - - return enet_initialize (); -} - -ENetVersion -enet_linked_version (void) -{ - return ENET_VERSION; -} - -void * -enet_malloc (size_t size) -{ - void * memory = callbacks.malloc (size); - - if (memory == NULL) - callbacks.no_memory (); - - return memory; -} - -void -enet_free (void * memory) -{ - callbacks.free (memory); -} - diff --git a/deps/enet/src/compress.c b/deps/enet/src/compress.c deleted file mode 100644 index 784489a..0000000 --- a/deps/enet/src/compress.c +++ /dev/null @@ -1,654 +0,0 @@ -/** - @file compress.c - @brief An adaptive order-2 PPM range coder -*/ -#define ENET_BUILDING_LIB 1 -#include <string.h> -#include "enet/enet.h" - -typedef struct _ENetSymbol -{ - /* binary indexed tree of symbols */ - enet_uint8 value; - enet_uint8 count; - enet_uint16 under; - enet_uint16 left, right; - - /* context defined by this symbol */ - enet_uint16 symbols; - enet_uint16 escapes; - enet_uint16 total; - enet_uint16 parent; -} ENetSymbol; - -/* adaptation constants tuned aggressively for small packet sizes rather than large file compression */ -enum -{ - ENET_RANGE_CODER_TOP = 1<<24, - ENET_RANGE_CODER_BOTTOM = 1<<16, - - ENET_CONTEXT_SYMBOL_DELTA = 3, - ENET_CONTEXT_SYMBOL_MINIMUM = 1, - ENET_CONTEXT_ESCAPE_MINIMUM = 1, - - ENET_SUBCONTEXT_ORDER = 2, - ENET_SUBCONTEXT_SYMBOL_DELTA = 2, - ENET_SUBCONTEXT_ESCAPE_DELTA = 5 -}; - -/* context exclusion roughly halves compression speed, so disable for now */ -#undef ENET_CONTEXT_EXCLUSION - -typedef struct _ENetRangeCoder -{ - /* only allocate enough symbols for reasonable MTUs, would need to be larger for large file compression */ - ENetSymbol symbols[4096]; -} ENetRangeCoder; - -void * -enet_range_coder_create (void) -{ - ENetRangeCoder * rangeCoder = (ENetRangeCoder *) enet_malloc (sizeof (ENetRangeCoder)); - if (rangeCoder == NULL) - return NULL; - - return rangeCoder; -} - -void -enet_range_coder_destroy (void * context) -{ - ENetRangeCoder * rangeCoder = (ENetRangeCoder *) context; - if (rangeCoder == NULL) - return; - - enet_free (rangeCoder); -} - -#define ENET_SYMBOL_CREATE(symbol, value_, count_) \ -{ \ - symbol = & rangeCoder -> symbols [nextSymbol ++]; \ - symbol -> value = value_; \ - symbol -> count = count_; \ - symbol -> under = count_; \ - symbol -> left = 0; \ - symbol -> right = 0; \ - symbol -> symbols = 0; \ - symbol -> escapes = 0; \ - symbol -> total = 0; \ - symbol -> parent = 0; \ -} - -#define ENET_CONTEXT_CREATE(context, escapes_, minimum) \ -{ \ - ENET_SYMBOL_CREATE (context, 0, 0); \ - (context) -> escapes = escapes_; \ - (context) -> total = escapes_ + 256*minimum; \ - (context) -> symbols = 0; \ -} - -static enet_uint16 -enet_symbol_rescale (ENetSymbol * symbol) -{ - enet_uint16 total = 0; - for (;;) - { - symbol -> count -= symbol->count >> 1; - symbol -> under = symbol -> count; - if (symbol -> left) - symbol -> under += enet_symbol_rescale (symbol + symbol -> left); - total += symbol -> under; - if (! symbol -> right) break; - symbol += symbol -> right; - } - return total; -} - -#define ENET_CONTEXT_RESCALE(context, minimum) \ -{ \ - (context) -> total = (context) -> symbols ? enet_symbol_rescale ((context) + (context) -> symbols) : 0; \ - (context) -> escapes -= (context) -> escapes >> 1; \ - (context) -> total += (context) -> escapes + 256*minimum; \ -} - -#define ENET_RANGE_CODER_OUTPUT(value) \ -{ \ - if (outData >= outEnd) \ - return 0; \ - * outData ++ = value; \ -} - -#define ENET_RANGE_CODER_ENCODE(under, count, total) \ -{ \ - encodeRange /= (total); \ - encodeLow += (under) * encodeRange; \ - encodeRange *= (count); \ - for (;;) \ - { \ - if((encodeLow ^ (encodeLow + encodeRange)) >= ENET_RANGE_CODER_TOP) \ - { \ - if(encodeRange >= ENET_RANGE_CODER_BOTTOM) break; \ - encodeRange = -encodeLow & (ENET_RANGE_CODER_BOTTOM - 1); \ - } \ - ENET_RANGE_CODER_OUTPUT (encodeLow >> 24); \ - encodeRange <<= 8; \ - encodeLow <<= 8; \ - } \ -} - -#define ENET_RANGE_CODER_FLUSH \ -{ \ - while (encodeLow) \ - { \ - ENET_RANGE_CODER_OUTPUT (encodeLow >> 24); \ - encodeLow <<= 8; \ - } \ -} - -#define ENET_RANGE_CODER_FREE_SYMBOLS \ -{ \ - if (nextSymbol >= sizeof (rangeCoder -> symbols) / sizeof (ENetSymbol) - ENET_SUBCONTEXT_ORDER ) \ - { \ - nextSymbol = 0; \ - ENET_CONTEXT_CREATE (root, ENET_CONTEXT_ESCAPE_MINIMUM, ENET_CONTEXT_SYMBOL_MINIMUM); \ - predicted = 0; \ - order = 0; \ - } \ -} - -#define ENET_CONTEXT_ENCODE(context, symbol_, value_, under_, count_, update, minimum) \ -{ \ - under_ = value*minimum; \ - count_ = minimum; \ - if (! (context) -> symbols) \ - { \ - ENET_SYMBOL_CREATE (symbol_, value_, update); \ - (context) -> symbols = symbol_ - (context); \ - } \ - else \ - { \ - ENetSymbol * node = (context) + (context) -> symbols; \ - for (;;) \ - { \ - if (value_ < node -> value) \ - { \ - node -> under += update; \ - if (node -> left) { node += node -> left; continue; } \ - ENET_SYMBOL_CREATE (symbol_, value_, update); \ - node -> left = symbol_ - node; \ - } \ - else \ - if (value_ > node -> value) \ - { \ - under_ += node -> under; \ - if (node -> right) { node += node -> right; continue; } \ - ENET_SYMBOL_CREATE (symbol_, value_, update); \ - node -> right = symbol_ - node; \ - } \ - else \ - { \ - count_ += node -> count; \ - under_ += node -> under - node -> count; \ - node -> under += update; \ - node -> count += update; \ - symbol_ = node; \ - } \ - break; \ - } \ - } \ -} - -#ifdef ENET_CONTEXT_EXCLUSION -static const ENetSymbol emptyContext = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }; - -#define ENET_CONTEXT_WALK(context, body) \ -{ \ - const ENetSymbol * node = (context) + (context) -> symbols; \ - const ENetSymbol * stack [256]; \ - size_t stackSize = 0; \ - while (node -> left) \ - { \ - stack [stackSize ++] = node; \ - node += node -> left; \ - } \ - for (;;) \ - { \ - body; \ - if (node -> right) \ - { \ - node += node -> right; \ - while (node -> left) \ - { \ - stack [stackSize ++] = node; \ - node += node -> left; \ - } \ - } \ - else \ - if (stackSize <= 0) \ - break; \ - else \ - node = stack [-- stackSize]; \ - } \ -} - -#define ENET_CONTEXT_ENCODE_EXCLUDE(context, value_, under, total, minimum) \ -ENET_CONTEXT_WALK(context, { \ - if (node -> value != value_) \ - { \ - enet_uint16 parentCount = rangeCoder -> symbols [node -> parent].count + minimum; \ - if (node -> value < value_) \ - under -= parentCount; \ - total -= parentCount; \ - } \ -}) -#endif - -size_t -enet_range_coder_compress (void * context, const ENetBuffer * inBuffers, size_t inBufferCount, size_t inLimit, enet_uint8 * outData, size_t outLimit) -{ - ENetRangeCoder * rangeCoder = (ENetRangeCoder *) context; - enet_uint8 * outStart = outData, * outEnd = & outData [outLimit]; - const enet_uint8 * inData, * inEnd; - enet_uint32 encodeLow = 0, encodeRange = ~0; - ENetSymbol * root; - enet_uint16 predicted = 0; - size_t order = 0, nextSymbol = 0; - - if (rangeCoder == NULL || inBufferCount <= 0 || inLimit <= 0) - return 0; - - inData = (const enet_uint8 *) inBuffers -> data; - inEnd = & inData [inBuffers -> dataLength]; - inBuffers ++; - inBufferCount --; - - ENET_CONTEXT_CREATE (root, ENET_CONTEXT_ESCAPE_MINIMUM, ENET_CONTEXT_SYMBOL_MINIMUM); - - for (;;) - { - ENetSymbol * subcontext, * symbol; -#ifdef ENET_CONTEXT_EXCLUSION - const ENetSymbol * childContext = & emptyContext; -#endif - enet_uint8 value; - enet_uint16 count, under, * parent = & predicted, total; - if (inData >= inEnd) - { - if (inBufferCount <= 0) - break; - inData = (const enet_uint8 *) inBuffers -> data; - inEnd = & inData [inBuffers -> dataLength]; - inBuffers ++; - inBufferCount --; - } - value = * inData ++; - - for (subcontext = & rangeCoder -> symbols [predicted]; - subcontext != root; -#ifdef ENET_CONTEXT_EXCLUSION - childContext = subcontext, -#endif - subcontext = & rangeCoder -> symbols [subcontext -> parent]) - { - ENET_CONTEXT_ENCODE (subcontext, symbol, value, under, count, ENET_SUBCONTEXT_SYMBOL_DELTA, 0); - * parent = symbol - rangeCoder -> symbols; - parent = & symbol -> parent; - total = subcontext -> total; -#ifdef ENET_CONTEXT_EXCLUSION - if (childContext -> total > ENET_SUBCONTEXT_SYMBOL_DELTA + ENET_SUBCONTEXT_ESCAPE_DELTA) - ENET_CONTEXT_ENCODE_EXCLUDE (childContext, value, under, total, 0); -#endif - if (count > 0) - { - ENET_RANGE_CODER_ENCODE (subcontext -> escapes + under, count, total); - } - else - { - if (subcontext -> escapes > 0 && subcontext -> escapes < total) - ENET_RANGE_CODER_ENCODE (0, subcontext -> escapes, total); - subcontext -> escapes += ENET_SUBCONTEXT_ESCAPE_DELTA; - subcontext -> total += ENET_SUBCONTEXT_ESCAPE_DELTA; - } - subcontext -> total += ENET_SUBCONTEXT_SYMBOL_DELTA; - if (count > 0xFF - 2*ENET_SUBCONTEXT_SYMBOL_DELTA || subcontext -> total > ENET_RANGE_CODER_BOTTOM - 0x100) - ENET_CONTEXT_RESCALE (subcontext, 0); - if (count > 0) goto nextInput; - } - - ENET_CONTEXT_ENCODE (root, symbol, value, under, count, ENET_CONTEXT_SYMBOL_DELTA, ENET_CONTEXT_SYMBOL_MINIMUM); - * parent = symbol - rangeCoder -> symbols; - parent = & symbol -> parent; - total = root -> total; -#ifdef ENET_CONTEXT_EXCLUSION - if (childContext -> total > ENET_SUBCONTEXT_SYMBOL_DELTA + ENET_SUBCONTEXT_ESCAPE_DELTA) - ENET_CONTEXT_ENCODE_EXCLUDE (childContext, value, under, total, ENET_CONTEXT_SYMBOL_MINIMUM); -#endif - ENET_RANGE_CODER_ENCODE (root -> escapes + under, count, total); - root -> total += ENET_CONTEXT_SYMBOL_DELTA; - if (count > 0xFF - 2*ENET_CONTEXT_SYMBOL_DELTA + ENET_CONTEXT_SYMBOL_MINIMUM || root -> total > ENET_RANGE_CODER_BOTTOM - 0x100) - ENET_CONTEXT_RESCALE (root, ENET_CONTEXT_SYMBOL_MINIMUM); - - nextInput: - if (order >= ENET_SUBCONTEXT_ORDER) - predicted = rangeCoder -> symbols [predicted].parent; - else - order ++; - ENET_RANGE_CODER_FREE_SYMBOLS; - } - - ENET_RANGE_CODER_FLUSH; - - return (size_t) (outData - outStart); -} - -#define ENET_RANGE_CODER_SEED \ -{ \ - if (inData < inEnd) decodeCode |= * inData ++ << 24; \ - if (inData < inEnd) decodeCode |= * inData ++ << 16; \ - if (inData < inEnd) decodeCode |= * inData ++ << 8; \ - if (inData < inEnd) decodeCode |= * inData ++; \ -} - -#define ENET_RANGE_CODER_READ(total) ((decodeCode - decodeLow) / (decodeRange /= (total))) - -#define ENET_RANGE_CODER_DECODE(under, count, total) \ -{ \ - decodeLow += (under) * decodeRange; \ - decodeRange *= (count); \ - for (;;) \ - { \ - if((decodeLow ^ (decodeLow + decodeRange)) >= ENET_RANGE_CODER_TOP) \ - { \ - if(decodeRange >= ENET_RANGE_CODER_BOTTOM) break; \ - decodeRange = -decodeLow & (ENET_RANGE_CODER_BOTTOM - 1); \ - } \ - decodeCode <<= 8; \ - if (inData < inEnd) \ - decodeCode |= * inData ++; \ - decodeRange <<= 8; \ - decodeLow <<= 8; \ - } \ -} - -#define ENET_CONTEXT_DECODE(context, symbol_, code, value_, under_, count_, update, minimum, createRoot, visitNode, createRight, createLeft) \ -{ \ - under_ = 0; \ - count_ = minimum; \ - if (! (context) -> symbols) \ - { \ - createRoot; \ - } \ - else \ - { \ - ENetSymbol * node = (context) + (context) -> symbols; \ - for (;;) \ - { \ - enet_uint16 after = under_ + node -> under + (node -> value + 1)*minimum, before = node -> count + minimum; \ - visitNode; \ - if (code >= after) \ - { \ - under_ += node -> under; \ - if (node -> right) { node += node -> right; continue; } \ - createRight; \ - } \ - else \ - if (code < after - before) \ - { \ - node -> under += update; \ - if (node -> left) { node += node -> left; continue; } \ - createLeft; \ - } \ - else \ - { \ - value_ = node -> value; \ - count_ += node -> count; \ - under_ = after - before; \ - node -> under += update; \ - node -> count += update; \ - symbol_ = node; \ - } \ - break; \ - } \ - } \ -} - -#define ENET_CONTEXT_TRY_DECODE(context, symbol_, code, value_, under_, count_, update, minimum, exclude) \ -ENET_CONTEXT_DECODE (context, symbol_, code, value_, under_, count_, update, minimum, return 0, exclude (node -> value, after, before), return 0, return 0) - -#define ENET_CONTEXT_ROOT_DECODE(context, symbol_, code, value_, under_, count_, update, minimum, exclude) \ -ENET_CONTEXT_DECODE (context, symbol_, code, value_, under_, count_, update, minimum, \ - { \ - value_ = code / minimum; \ - under_ = code - code%minimum; \ - ENET_SYMBOL_CREATE (symbol_, value_, update); \ - (context) -> symbols = symbol_ - (context); \ - }, \ - exclude (node -> value, after, before), \ - { \ - value_ = node->value + 1 + (code - after)/minimum; \ - under_ = code - (code - after)%minimum; \ - ENET_SYMBOL_CREATE (symbol_, value_, update); \ - node -> right = symbol_ - node; \ - }, \ - { \ - value_ = node->value - 1 - (after - before - code - 1)/minimum; \ - under_ = code - (after - before - code - 1)%minimum; \ - ENET_SYMBOL_CREATE (symbol_, value_, update); \ - node -> left = symbol_ - node; \ - }) \ - -#ifdef ENET_CONTEXT_EXCLUSION -typedef struct _ENetExclude -{ - enet_uint8 value; - enet_uint16 under; -} ENetExclude; - -#define ENET_CONTEXT_DECODE_EXCLUDE(context, total, minimum) \ -{ \ - enet_uint16 under = 0; \ - nextExclude = excludes; \ - ENET_CONTEXT_WALK (context, { \ - under += rangeCoder -> symbols [node -> parent].count + minimum; \ - nextExclude -> value = node -> value; \ - nextExclude -> under = under; \ - nextExclude ++; \ - }); \ - total -= under; \ -} - -#define ENET_CONTEXT_EXCLUDED(value_, after, before) \ -{ \ - size_t low = 0, high = nextExclude - excludes; \ - for(;;) \ - { \ - size_t mid = (low + high) >> 1; \ - const ENetExclude * exclude = & excludes [mid]; \ - if (value_ < exclude -> value) \ - { \ - if (low + 1 < high) \ - { \ - high = mid; \ - continue; \ - } \ - if (exclude > excludes) \ - after -= exclude [-1].under; \ - } \ - else \ - { \ - if (value_ > exclude -> value) \ - { \ - if (low + 1 < high) \ - { \ - low = mid; \ - continue; \ - } \ - } \ - else \ - before = 0; \ - after -= exclude -> under; \ - } \ - break; \ - } \ -} -#endif - -#define ENET_CONTEXT_NOT_EXCLUDED(value_, after, before) - -size_t -enet_range_coder_decompress (void * context, const enet_uint8 * inData, size_t inLimit, enet_uint8 * outData, size_t outLimit) -{ - ENetRangeCoder * rangeCoder = (ENetRangeCoder *) context; - enet_uint8 * outStart = outData, * outEnd = & outData [outLimit]; - const enet_uint8 * inEnd = & inData [inLimit]; - enet_uint32 decodeLow = 0, decodeCode = 0, decodeRange = ~0; - ENetSymbol * root; - enet_uint16 predicted = 0; - size_t order = 0, nextSymbol = 0; -#ifdef ENET_CONTEXT_EXCLUSION - ENetExclude excludes [256]; - ENetExclude * nextExclude = excludes; -#endif - - if (rangeCoder == NULL || inLimit <= 0) - return 0; - - ENET_CONTEXT_CREATE (root, ENET_CONTEXT_ESCAPE_MINIMUM, ENET_CONTEXT_SYMBOL_MINIMUM); - - ENET_RANGE_CODER_SEED; - - for (;;) - { - ENetSymbol * subcontext, * symbol, * patch; -#ifdef ENET_CONTEXT_EXCLUSION - const ENetSymbol * childContext = & emptyContext; -#endif - enet_uint8 value = 0; - enet_uint16 code, under, count, bottom, * parent = & predicted, total; - - for (subcontext = & rangeCoder -> symbols [predicted]; - subcontext != root; -#ifdef ENET_CONTEXT_EXCLUSION - childContext = subcontext, -#endif - subcontext = & rangeCoder -> symbols [subcontext -> parent]) - { - if (subcontext -> escapes <= 0) - continue; - total = subcontext -> total; -#ifdef ENET_CONTEXT_EXCLUSION - if (childContext -> total > 0) - ENET_CONTEXT_DECODE_EXCLUDE (childContext, total, 0); -#endif - if (subcontext -> escapes >= total) - continue; - code = ENET_RANGE_CODER_READ (total); - if (code < subcontext -> escapes) - { - ENET_RANGE_CODER_DECODE (0, subcontext -> escapes, total); - continue; - } - code -= subcontext -> escapes; -#ifdef ENET_CONTEXT_EXCLUSION - if (childContext -> total > 0) - { - ENET_CONTEXT_TRY_DECODE (subcontext, symbol, code, value, under, count, ENET_SUBCONTEXT_SYMBOL_DELTA, 0, ENET_CONTEXT_EXCLUDED); - } - else -#endif - { - ENET_CONTEXT_TRY_DECODE (subcontext, symbol, code, value, under, count, ENET_SUBCONTEXT_SYMBOL_DELTA, 0, ENET_CONTEXT_NOT_EXCLUDED); - } - bottom = symbol - rangeCoder -> symbols; - ENET_RANGE_CODER_DECODE (subcontext -> escapes + under, count, total); - subcontext -> total += ENET_SUBCONTEXT_SYMBOL_DELTA; - if (count > 0xFF - 2*ENET_SUBCONTEXT_SYMBOL_DELTA || subcontext -> total > ENET_RANGE_CODER_BOTTOM - 0x100) - ENET_CONTEXT_RESCALE (subcontext, 0); - goto patchContexts; - } - - total = root -> total; -#ifdef ENET_CONTEXT_EXCLUSION - if (childContext -> total > 0) - ENET_CONTEXT_DECODE_EXCLUDE (childContext, total, ENET_CONTEXT_SYMBOL_MINIMUM); -#endif - code = ENET_RANGE_CODER_READ (total); - if (code < root -> escapes) - { - ENET_RANGE_CODER_DECODE (0, root -> escapes, total); - break; - } - code -= root -> escapes; -#ifdef ENET_CONTEXT_EXCLUSION - if (childContext -> total > 0) - { - ENET_CONTEXT_ROOT_DECODE (root, symbol, code, value, under, count, ENET_CONTEXT_SYMBOL_DELTA, ENET_CONTEXT_SYMBOL_MINIMUM, ENET_CONTEXT_EXCLUDED); - } - else -#endif - { - ENET_CONTEXT_ROOT_DECODE (root, symbol, code, value, under, count, ENET_CONTEXT_SYMBOL_DELTA, ENET_CONTEXT_SYMBOL_MINIMUM, ENET_CONTEXT_NOT_EXCLUDED); - } - bottom = symbol - rangeCoder -> symbols; - ENET_RANGE_CODER_DECODE (root -> escapes + under, count, total); - root -> total += ENET_CONTEXT_SYMBOL_DELTA; - if (count > 0xFF - 2*ENET_CONTEXT_SYMBOL_DELTA + ENET_CONTEXT_SYMBOL_MINIMUM || root -> total > ENET_RANGE_CODER_BOTTOM - 0x100) - ENET_CONTEXT_RESCALE (root, ENET_CONTEXT_SYMBOL_MINIMUM); - - patchContexts: - for (patch = & rangeCoder -> symbols [predicted]; - patch != subcontext; - patch = & rangeCoder -> symbols [patch -> parent]) - { - ENET_CONTEXT_ENCODE (patch, symbol, value, under, count, ENET_SUBCONTEXT_SYMBOL_DELTA, 0); - * parent = symbol - rangeCoder -> symbols; - parent = & symbol -> parent; - if (count <= 0) - { - patch -> escapes += ENET_SUBCONTEXT_ESCAPE_DELTA; - patch -> total += ENET_SUBCONTEXT_ESCAPE_DELTA; - } - patch -> total += ENET_SUBCONTEXT_SYMBOL_DELTA; - if (count > 0xFF - 2*ENET_SUBCONTEXT_SYMBOL_DELTA || patch -> total > ENET_RANGE_CODER_BOTTOM - 0x100) - ENET_CONTEXT_RESCALE (patch, 0); - } - * parent = bottom; - - ENET_RANGE_CODER_OUTPUT (value); - - if (order >= ENET_SUBCONTEXT_ORDER) - predicted = rangeCoder -> symbols [predicted].parent; - else - order ++; - ENET_RANGE_CODER_FREE_SYMBOLS; - } - - return (size_t) (outData - outStart); -} - -/** @defgroup host ENet host functions - @{ -*/ - -/** Sets the packet compressor the host should use to the default range coder. - @param host host to enable the range coder for - @returns 0 on success, < 0 on failure -*/ -int -enet_host_compress_with_range_coder (ENetHost * host) -{ - ENetCompressor compressor; - memset (& compressor, 0, sizeof (compressor)); - compressor.context = enet_range_coder_create(); - if (compressor.context == NULL) - return -1; - compressor.compress = enet_range_coder_compress; - compressor.decompress = enet_range_coder_decompress; - compressor.destroy = enet_range_coder_destroy; - enet_host_compress (host, & compressor); - return 0; -} - -/** @} */ - - diff --git a/deps/enet/src/host.c b/deps/enet/src/host.c deleted file mode 100644 index fff946a..0000000 --- a/deps/enet/src/host.c +++ /dev/null @@ -1,503 +0,0 @@ -/** - @file host.c - @brief ENet host management functions -*/ -#define ENET_BUILDING_LIB 1 -#include <string.h> -#include "enet/enet.h" - -/** @defgroup host ENet host functions - @{ -*/ - -/** Creates a host for communicating to peers. - - @param address the address at which other peers may connect to this host. If NULL, then no peers may connect to the host. - @param peerCount the maximum number of peers that should be allocated for the host. - @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT - @param incomingBandwidth downstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth. - @param outgoingBandwidth upstream bandwidth of the host in bytes/second; if 0, ENet will assume unlimited bandwidth. - - @returns the host on success and NULL on failure - - @remarks ENet will strategically drop packets on specific sides of a connection between hosts - to ensure the host's bandwidth is not overwhelmed. The bandwidth parameters also determine - the window size of a connection which limits the amount of reliable packets that may be in transit - at any given time. -*/ -ENetHost * -enet_host_create (const ENetAddress * address, size_t peerCount, size_t channelLimit, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth) -{ - ENetHost * host; - ENetPeer * currentPeer; - - if (peerCount > ENET_PROTOCOL_MAXIMUM_PEER_ID) - return NULL; - - host = (ENetHost *) enet_malloc (sizeof (ENetHost)); - if (host == NULL) - return NULL; - memset (host, 0, sizeof (ENetHost)); - - host -> peers = (ENetPeer *) enet_malloc (peerCount * sizeof (ENetPeer)); - if (host -> peers == NULL) - { - enet_free (host); - - return NULL; - } - memset (host -> peers, 0, peerCount * sizeof (ENetPeer)); - - host -> socket = enet_socket_create (ENET_SOCKET_TYPE_DATAGRAM); - if (host -> socket == ENET_SOCKET_NULL || (address != NULL && enet_socket_bind (host -> socket, address) < 0)) - { - if (host -> socket != ENET_SOCKET_NULL) - enet_socket_destroy (host -> socket); - - enet_free (host -> peers); - enet_free (host); - - return NULL; - } - - enet_socket_set_option (host -> socket, ENET_SOCKOPT_NONBLOCK, 1); - enet_socket_set_option (host -> socket, ENET_SOCKOPT_BROADCAST, 1); - enet_socket_set_option (host -> socket, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE); - enet_socket_set_option (host -> socket, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE); - - if (address != NULL && enet_socket_get_address (host -> socket, & host -> address) < 0) - host -> address = * address; - - if (! channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) - channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - else - if (channelLimit < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) - channelLimit = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - - host -> randomSeed = (enet_uint32) (size_t) host; - host -> randomSeed += enet_host_random_seed (); - host -> randomSeed = (host -> randomSeed << 16) | (host -> randomSeed >> 16); - host -> channelLimit = channelLimit; - host -> incomingBandwidth = incomingBandwidth; - host -> outgoingBandwidth = outgoingBandwidth; - host -> bandwidthThrottleEpoch = 0; - host -> recalculateBandwidthLimits = 0; - host -> mtu = ENET_HOST_DEFAULT_MTU; - host -> peerCount = peerCount; - host -> commandCount = 0; - host -> bufferCount = 0; - host -> checksum = NULL; - host -> receivedAddress.host = ENET_HOST_ANY; - host -> receivedAddress.port = 0; - host -> receivedData = NULL; - host -> receivedDataLength = 0; - - host -> totalSentData = 0; - host -> totalSentPackets = 0; - host -> totalReceivedData = 0; - host -> totalReceivedPackets = 0; - host -> totalQueued = 0; - - host -> connectedPeers = 0; - host -> bandwidthLimitedPeers = 0; - host -> duplicatePeers = ENET_PROTOCOL_MAXIMUM_PEER_ID; - host -> maximumPacketSize = ENET_HOST_DEFAULT_MAXIMUM_PACKET_SIZE; - host -> maximumWaitingData = ENET_HOST_DEFAULT_MAXIMUM_WAITING_DATA; - - host -> compressor.context = NULL; - host -> compressor.compress = NULL; - host -> compressor.decompress = NULL; - host -> compressor.destroy = NULL; - - host -> intercept = NULL; - - enet_list_clear (& host -> dispatchQueue); - - for (currentPeer = host -> peers; - currentPeer < & host -> peers [host -> peerCount]; - ++ currentPeer) - { - currentPeer -> host = host; - currentPeer -> incomingPeerID = currentPeer - host -> peers; - currentPeer -> outgoingSessionID = currentPeer -> incomingSessionID = 0xFF; - currentPeer -> data = NULL; - - enet_list_clear (& currentPeer -> acknowledgements); - enet_list_clear (& currentPeer -> sentReliableCommands); - enet_list_clear (& currentPeer -> outgoingCommands); - enet_list_clear (& currentPeer -> outgoingSendReliableCommands); - enet_list_clear (& currentPeer -> dispatchedCommands); - - enet_peer_reset (currentPeer); - } - - return host; -} - -/** Destroys the host and all resources associated with it. - @param host pointer to the host to destroy -*/ -void -enet_host_destroy (ENetHost * host) -{ - ENetPeer * currentPeer; - - if (host == NULL) - return; - - enet_socket_destroy (host -> socket); - - for (currentPeer = host -> peers; - currentPeer < & host -> peers [host -> peerCount]; - ++ currentPeer) - { - enet_peer_reset (currentPeer); - } - - if (host -> compressor.context != NULL && host -> compressor.destroy) - (* host -> compressor.destroy) (host -> compressor.context); - - enet_free (host -> peers); - enet_free (host); -} - -enet_uint32 -enet_host_random (ENetHost * host) -{ - /* Mulberry32 by Tommy Ettinger */ - enet_uint32 n = (host -> randomSeed += 0x6D2B79F5U); - n = (n ^ (n >> 15)) * (n | 1U); - n ^= n + (n ^ (n >> 7)) * (n | 61U); - return n ^ (n >> 14); -} - -/** Initiates a connection to a foreign host. - @param host host seeking the connection - @param address destination for the connection - @param channelCount number of channels to allocate - @param data user data supplied to the receiving host - @returns a peer representing the foreign host on success, NULL on failure - @remarks The peer returned will have not completed the connection until enet_host_service() - notifies of an ENET_EVENT_TYPE_CONNECT event for the peer. -*/ -ENetPeer * -enet_host_connect (ENetHost * host, const ENetAddress * address, size_t channelCount, enet_uint32 data) -{ - ENetPeer * currentPeer; - ENetChannel * channel; - ENetProtocol command; - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) - channelCount = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - else - if (channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) - channelCount = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - - for (currentPeer = host -> peers; - currentPeer < & host -> peers [host -> peerCount]; - ++ currentPeer) - { - if (currentPeer -> state == ENET_PEER_STATE_DISCONNECTED) - break; - } - - if (currentPeer >= & host -> peers [host -> peerCount]) - return NULL; - - currentPeer -> channels = (ENetChannel *) enet_malloc (channelCount * sizeof (ENetChannel)); - if (currentPeer -> channels == NULL) - return NULL; - currentPeer -> channelCount = channelCount; - currentPeer -> state = ENET_PEER_STATE_CONNECTING; - currentPeer -> address = * address; - currentPeer -> connectID = enet_host_random (host); - currentPeer -> mtu = host -> mtu; - - if (host -> outgoingBandwidth == 0) - currentPeer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - else - currentPeer -> windowSize = (host -> outgoingBandwidth / - ENET_PEER_WINDOW_SIZE_SCALE) * - ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - - if (currentPeer -> windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) - currentPeer -> windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - else - if (currentPeer -> windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) - currentPeer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - - for (channel = currentPeer -> channels; - channel < & currentPeer -> channels [channelCount]; - ++ channel) - { - channel -> outgoingReliableSequenceNumber = 0; - channel -> outgoingUnreliableSequenceNumber = 0; - channel -> incomingReliableSequenceNumber = 0; - channel -> incomingUnreliableSequenceNumber = 0; - - enet_list_clear (& channel -> incomingReliableCommands); - enet_list_clear (& channel -> incomingUnreliableCommands); - - channel -> usedReliableWindows = 0; - memset (channel -> reliableWindows, 0, sizeof (channel -> reliableWindows)); - } - - command.header.command = ENET_PROTOCOL_COMMAND_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - command.connect.outgoingPeerID = ENET_HOST_TO_NET_16 (currentPeer -> incomingPeerID); - command.connect.incomingSessionID = currentPeer -> incomingSessionID; - command.connect.outgoingSessionID = currentPeer -> outgoingSessionID; - command.connect.mtu = ENET_HOST_TO_NET_32 (currentPeer -> mtu); - command.connect.windowSize = ENET_HOST_TO_NET_32 (currentPeer -> windowSize); - command.connect.channelCount = ENET_HOST_TO_NET_32 (channelCount); - command.connect.incomingBandwidth = ENET_HOST_TO_NET_32 (host -> incomingBandwidth); - command.connect.outgoingBandwidth = ENET_HOST_TO_NET_32 (host -> outgoingBandwidth); - command.connect.packetThrottleInterval = ENET_HOST_TO_NET_32 (currentPeer -> packetThrottleInterval); - command.connect.packetThrottleAcceleration = ENET_HOST_TO_NET_32 (currentPeer -> packetThrottleAcceleration); - command.connect.packetThrottleDeceleration = ENET_HOST_TO_NET_32 (currentPeer -> packetThrottleDeceleration); - command.connect.connectID = currentPeer -> connectID; - command.connect.data = ENET_HOST_TO_NET_32 (data); - - enet_peer_queue_outgoing_command (currentPeer, & command, NULL, 0, 0); - - return currentPeer; -} - -/** Queues a packet to be sent to all peers associated with the host. - @param host host on which to broadcast the packet - @param channelID channel on which to broadcast - @param packet packet to broadcast -*/ -void -enet_host_broadcast (ENetHost * host, enet_uint8 channelID, ENetPacket * packet) -{ - ENetPeer * currentPeer; - - for (currentPeer = host -> peers; - currentPeer < & host -> peers [host -> peerCount]; - ++ currentPeer) - { - if (currentPeer -> state != ENET_PEER_STATE_CONNECTED) - continue; - - enet_peer_send (currentPeer, channelID, packet); - } - - if (packet -> referenceCount == 0) - enet_packet_destroy (packet); -} - -/** Sets the packet compressor the host should use to compress and decompress packets. - @param host host to enable or disable compression for - @param compressor callbacks for for the packet compressor; if NULL, then compression is disabled -*/ -void -enet_host_compress (ENetHost * host, const ENetCompressor * compressor) -{ - if (host -> compressor.context != NULL && host -> compressor.destroy) - (* host -> compressor.destroy) (host -> compressor.context); - - if (compressor) - host -> compressor = * compressor; - else - host -> compressor.context = NULL; -} - -/** Limits the maximum allowed channels of future incoming connections. - @param host host to limit - @param channelLimit the maximum number of channels allowed; if 0, then this is equivalent to ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT -*/ -void -enet_host_channel_limit (ENetHost * host, size_t channelLimit) -{ - if (! channelLimit || channelLimit > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) - channelLimit = ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT; - else - if (channelLimit < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT) - channelLimit = ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT; - - host -> channelLimit = channelLimit; -} - - -/** Adjusts the bandwidth limits of a host. - @param host host to adjust - @param incomingBandwidth new incoming bandwidth - @param outgoingBandwidth new outgoing bandwidth - @remarks the incoming and outgoing bandwidth parameters are identical in function to those - specified in enet_host_create(). -*/ -void -enet_host_bandwidth_limit (ENetHost * host, enet_uint32 incomingBandwidth, enet_uint32 outgoingBandwidth) -{ - host -> incomingBandwidth = incomingBandwidth; - host -> outgoingBandwidth = outgoingBandwidth; - host -> recalculateBandwidthLimits = 1; -} - -void -enet_host_bandwidth_throttle (ENetHost * host) -{ - enet_uint32 timeCurrent = enet_time_get (), - elapsedTime = timeCurrent - host -> bandwidthThrottleEpoch, - peersRemaining = (enet_uint32) host -> connectedPeers, - dataTotal = ~0, - bandwidth = ~0, - throttle = 0, - bandwidthLimit = 0; - int needsAdjustment = host -> bandwidthLimitedPeers > 0 ? 1 : 0; - ENetPeer * peer; - ENetProtocol command; - - if (elapsedTime < ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL) - return; - - host -> bandwidthThrottleEpoch = timeCurrent; - - if (peersRemaining == 0) - return; - - if (host -> outgoingBandwidth != 0) - { - dataTotal = 0; - bandwidth = (host -> outgoingBandwidth * elapsedTime) / 1000; - - for (peer = host -> peers; - peer < & host -> peers [host -> peerCount]; - ++ peer) - { - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - continue; - - dataTotal += peer -> outgoingDataTotal; - } - } - - while (peersRemaining > 0 && needsAdjustment != 0) - { - needsAdjustment = 0; - - if (dataTotal <= bandwidth) - throttle = ENET_PEER_PACKET_THROTTLE_SCALE; - else - throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal; - - for (peer = host -> peers; - peer < & host -> peers [host -> peerCount]; - ++ peer) - { - enet_uint32 peerBandwidth; - - if ((peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer -> incomingBandwidth == 0 || - peer -> outgoingBandwidthThrottleEpoch == timeCurrent) - continue; - - peerBandwidth = (peer -> incomingBandwidth * elapsedTime) / 1000; - if ((throttle * peer -> outgoingDataTotal) / ENET_PEER_PACKET_THROTTLE_SCALE <= peerBandwidth) - continue; - - peer -> packetThrottleLimit = (peerBandwidth * - ENET_PEER_PACKET_THROTTLE_SCALE) / peer -> outgoingDataTotal; - - if (peer -> packetThrottleLimit == 0) - peer -> packetThrottleLimit = 1; - - if (peer -> packetThrottle > peer -> packetThrottleLimit) - peer -> packetThrottle = peer -> packetThrottleLimit; - - peer -> outgoingBandwidthThrottleEpoch = timeCurrent; - - peer -> incomingDataTotal = 0; - peer -> outgoingDataTotal = 0; - - needsAdjustment = 1; - -- peersRemaining; - bandwidth -= peerBandwidth; - dataTotal -= peerBandwidth; - } - } - - if (peersRemaining > 0) - { - if (dataTotal <= bandwidth) - throttle = ENET_PEER_PACKET_THROTTLE_SCALE; - else - throttle = (bandwidth * ENET_PEER_PACKET_THROTTLE_SCALE) / dataTotal; - - for (peer = host -> peers; - peer < & host -> peers [host -> peerCount]; - ++ peer) - { - if ((peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer -> outgoingBandwidthThrottleEpoch == timeCurrent) - continue; - - peer -> packetThrottleLimit = throttle; - - if (peer -> packetThrottle > peer -> packetThrottleLimit) - peer -> packetThrottle = peer -> packetThrottleLimit; - - peer -> incomingDataTotal = 0; - peer -> outgoingDataTotal = 0; - } - } - - if (host -> recalculateBandwidthLimits) - { - host -> recalculateBandwidthLimits = 0; - - peersRemaining = (enet_uint32) host -> connectedPeers; - bandwidth = host -> incomingBandwidth; - needsAdjustment = 1; - - if (bandwidth == 0) - bandwidthLimit = 0; - else - while (peersRemaining > 0 && needsAdjustment != 0) - { - needsAdjustment = 0; - bandwidthLimit = bandwidth / peersRemaining; - - for (peer = host -> peers; - peer < & host -> peers [host -> peerCount]; - ++ peer) - { - if ((peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) || - peer -> incomingBandwidthThrottleEpoch == timeCurrent) - continue; - - if (peer -> outgoingBandwidth > 0 && - peer -> outgoingBandwidth >= bandwidthLimit) - continue; - - peer -> incomingBandwidthThrottleEpoch = timeCurrent; - - needsAdjustment = 1; - -- peersRemaining; - bandwidth -= peer -> outgoingBandwidth; - } - } - - for (peer = host -> peers; - peer < & host -> peers [host -> peerCount]; - ++ peer) - { - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - continue; - - command.header.command = ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - command.bandwidthLimit.outgoingBandwidth = ENET_HOST_TO_NET_32 (host -> outgoingBandwidth); - - if (peer -> incomingBandwidthThrottleEpoch == timeCurrent) - command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32 (peer -> outgoingBandwidth); - else - command.bandwidthLimit.incomingBandwidth = ENET_HOST_TO_NET_32 (bandwidthLimit); - - enet_peer_queue_outgoing_command (peer, & command, NULL, 0, 0); - } - } -} - -/** @} */ diff --git a/deps/enet/src/list.c b/deps/enet/src/list.c deleted file mode 100644 index 1c1a8df..0000000 --- a/deps/enet/src/list.c +++ /dev/null @@ -1,75 +0,0 @@ -/** - @file list.c - @brief ENet linked list functions -*/ -#define ENET_BUILDING_LIB 1 -#include "enet/enet.h" - -/** - @defgroup list ENet linked list utility functions - @ingroup private - @{ -*/ -void -enet_list_clear (ENetList * list) -{ - list -> sentinel.next = & list -> sentinel; - list -> sentinel.previous = & list -> sentinel; -} - -ENetListIterator -enet_list_insert (ENetListIterator position, void * data) -{ - ENetListIterator result = (ENetListIterator) data; - - result -> previous = position -> previous; - result -> next = position; - - result -> previous -> next = result; - position -> previous = result; - - return result; -} - -void * -enet_list_remove (ENetListIterator position) -{ - position -> previous -> next = position -> next; - position -> next -> previous = position -> previous; - - return position; -} - -ENetListIterator -enet_list_move (ENetListIterator position, void * dataFirst, void * dataLast) -{ - ENetListIterator first = (ENetListIterator) dataFirst, - last = (ENetListIterator) dataLast; - - first -> previous -> next = last -> next; - last -> next -> previous = first -> previous; - - first -> previous = position -> previous; - last -> next = position; - - first -> previous -> next = first; - position -> previous = last; - - return first; -} - -size_t -enet_list_size (ENetList * list) -{ - size_t size = 0; - ENetListIterator position; - - for (position = enet_list_begin (list); - position != enet_list_end (list); - position = enet_list_next (position)) - ++ size; - - return size; -} - -/** @} */ diff --git a/deps/enet/src/packet.c b/deps/enet/src/packet.c deleted file mode 100644 index 832cff9..0000000 --- a/deps/enet/src/packet.c +++ /dev/null @@ -1,163 +0,0 @@ -/** - @file packet.c - @brief ENet packet management functions -*/ -#include <string.h> -#define ENET_BUILDING_LIB 1 -#include "enet/enet.h" - -/** @defgroup Packet ENet packet functions - @{ -*/ - -/** Creates a packet that may be sent to a peer. - @param data initial contents of the packet's data; the packet's data will remain uninitialized if data is NULL. - @param dataLength size of the data allocated for this packet - @param flags flags for this packet as described for the ENetPacket structure. - @returns the packet on success, NULL on failure -*/ -ENetPacket * -enet_packet_create (const void * data, size_t dataLength, enet_uint32 flags) -{ - ENetPacket * packet = (ENetPacket *) enet_malloc (sizeof (ENetPacket)); - if (packet == NULL) - return NULL; - - if (flags & ENET_PACKET_FLAG_NO_ALLOCATE) - packet -> data = (enet_uint8 *) data; - else - if (dataLength <= 0) - packet -> data = NULL; - else - { - packet -> data = (enet_uint8 *) enet_malloc (dataLength); - if (packet -> data == NULL) - { - enet_free (packet); - return NULL; - } - - if (data != NULL) - memcpy (packet -> data, data, dataLength); - } - - packet -> referenceCount = 0; - packet -> flags = flags; - packet -> dataLength = dataLength; - packet -> freeCallback = NULL; - packet -> userData = NULL; - - return packet; -} - -/** Destroys the packet and deallocates its data. - @param packet packet to be destroyed -*/ -void -enet_packet_destroy (ENetPacket * packet) -{ - if (packet == NULL) - return; - - if (packet -> freeCallback != NULL) - (* packet -> freeCallback) (packet); - if (! (packet -> flags & ENET_PACKET_FLAG_NO_ALLOCATE) && - packet -> data != NULL) - enet_free (packet -> data); - enet_free (packet); -} - -/** Attempts to resize the data in the packet to length specified in the - dataLength parameter - @param packet packet to resize - @param dataLength new size for the packet data - @returns 0 on success, < 0 on failure -*/ -int -enet_packet_resize (ENetPacket * packet, size_t dataLength) -{ - enet_uint8 * newData; - - if (dataLength <= packet -> dataLength || (packet -> flags & ENET_PACKET_FLAG_NO_ALLOCATE)) - { - packet -> dataLength = dataLength; - - return 0; - } - - newData = (enet_uint8 *) enet_malloc (dataLength); - if (newData == NULL) - return -1; - - if (packet -> data != NULL) - { - if (packet -> dataLength > 0) - memcpy (newData, packet -> data, packet -> dataLength); - - enet_free (packet -> data); - } - - packet -> data = newData; - packet -> dataLength = dataLength; - - return 0; -} - -static const enet_uint32 crcTable [256] = -{ - 0, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, - 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, - 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, - 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, - 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, - 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, - 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, - 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, - 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, - 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, - 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, - 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, - 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, - 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, - 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, - 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, - 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, - 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, - 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, - 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, - 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, - 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, - 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, - 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, - 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x5005713, - 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0xBDBDF21, - 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, - 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, - 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, - 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, - 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, - 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D -}; - -enet_uint32 -enet_crc32 (const ENetBuffer * buffers, size_t bufferCount) -{ - enet_uint32 crc = 0xFFFFFFFF; - - while (bufferCount -- > 0) - { - const enet_uint8 * data = (const enet_uint8 *) buffers -> data, - * dataEnd = & data [buffers -> dataLength]; - - while (data < dataEnd) - { - crc = (crc >> 8) ^ crcTable [(crc & 0xFF) ^ *data++]; - } - - ++ buffers; - } - - return ENET_HOST_TO_NET_32 (~ crc); -} - -/** @} */ diff --git a/deps/enet/src/peer.c b/deps/enet/src/peer.c deleted file mode 100644 index df8f40f..0000000 --- a/deps/enet/src/peer.c +++ /dev/null @@ -1,1030 +0,0 @@ -/** - @file peer.c - @brief ENet peer management functions -*/ -#include <string.h> -#define ENET_BUILDING_LIB 1 -#include "enet/utility.h" -#include "enet/enet.h" - -/** @defgroup peer ENet peer functions - @{ -*/ - -/** Configures throttle parameter for a peer. - - Unreliable packets are dropped by ENet in response to the varying conditions - of the Internet connection to the peer. The throttle represents a probability - that an unreliable packet should not be dropped and thus sent by ENet to the peer. - The lowest mean round trip time from the sending of a reliable packet to the - receipt of its acknowledgement is measured over an amount of time specified by - the interval parameter in milliseconds. If a measured round trip time happens to - be significantly less than the mean round trip time measured over the interval, - then the throttle probability is increased to allow more traffic by an amount - specified in the acceleration parameter, which is a ratio to the ENET_PEER_PACKET_THROTTLE_SCALE - constant. If a measured round trip time happens to be significantly greater than - the mean round trip time measured over the interval, then the throttle probability - is decreased to limit traffic by an amount specified in the deceleration parameter, which - is a ratio to the ENET_PEER_PACKET_THROTTLE_SCALE constant. When the throttle has - a value of ENET_PEER_PACKET_THROTTLE_SCALE, no unreliable packets are dropped by - ENet, and so 100% of all unreliable packets will be sent. When the throttle has a - value of 0, all unreliable packets are dropped by ENet, and so 0% of all unreliable - packets will be sent. Intermediate values for the throttle represent intermediate - probabilities between 0% and 100% of unreliable packets being sent. The bandwidth - limits of the local and foreign hosts are taken into account to determine a - sensible limit for the throttle probability above which it should not raise even in - the best of conditions. - - @param peer peer to configure - @param interval interval, in milliseconds, over which to measure lowest mean RTT; the default value is ENET_PEER_PACKET_THROTTLE_INTERVAL. - @param acceleration rate at which to increase the throttle probability as mean RTT declines - @param deceleration rate at which to decrease the throttle probability as mean RTT increases -*/ -void -enet_peer_throttle_configure (ENetPeer * peer, enet_uint32 interval, enet_uint32 acceleration, enet_uint32 deceleration) -{ - ENetProtocol command; - - peer -> packetThrottleInterval = interval; - peer -> packetThrottleAcceleration = acceleration; - peer -> packetThrottleDeceleration = deceleration; - - command.header.command = ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - - command.throttleConfigure.packetThrottleInterval = ENET_HOST_TO_NET_32 (interval); - command.throttleConfigure.packetThrottleAcceleration = ENET_HOST_TO_NET_32 (acceleration); - command.throttleConfigure.packetThrottleDeceleration = ENET_HOST_TO_NET_32 (deceleration); - - enet_peer_queue_outgoing_command (peer, & command, NULL, 0, 0); -} - -int -enet_peer_throttle (ENetPeer * peer, enet_uint32 rtt) -{ - if (peer -> lastRoundTripTime <= peer -> lastRoundTripTimeVariance) - { - peer -> packetThrottle = peer -> packetThrottleLimit; - } - else - if (rtt <= peer -> lastRoundTripTime) - { - peer -> packetThrottle += peer -> packetThrottleAcceleration; - - if (peer -> packetThrottle > peer -> packetThrottleLimit) - peer -> packetThrottle = peer -> packetThrottleLimit; - - return 1; - } - else - if (rtt > peer -> lastRoundTripTime + 2 * peer -> lastRoundTripTimeVariance) - { - if (peer -> packetThrottle > peer -> packetThrottleDeceleration) - peer -> packetThrottle -= peer -> packetThrottleDeceleration; - else - peer -> packetThrottle = 0; - - return -1; - } - - return 0; -} - -/** Queues a packet to be sent. - - On success, ENet will assume ownership of the packet, and so enet_packet_destroy - should not be called on it thereafter. On failure, the caller still must destroy - the packet on its own as ENet has not queued the packet. The caller can also - check the packet's referenceCount field after sending to check if ENet queued - the packet and thus incremented the referenceCount. - - @param peer destination for the packet - @param channelID channel on which to send - @param packet packet to send - @retval 0 on success - @retval < 0 on failure -*/ -int -enet_peer_send (ENetPeer * peer, enet_uint8 channelID, ENetPacket * packet) -{ - ENetChannel * channel; - ENetProtocol command; - size_t fragmentLength; - - if (peer -> state != ENET_PEER_STATE_CONNECTED || - channelID >= peer -> channelCount || - packet -> dataLength > peer -> host -> maximumPacketSize) - return -1; - - channel = & peer -> channels [channelID]; - fragmentLength = peer -> mtu - sizeof (ENetProtocolHeader) - sizeof (ENetProtocolSendFragment); - if (peer -> host -> checksum != NULL) - fragmentLength -= sizeof(enet_uint32); - - if (packet -> dataLength > fragmentLength) - { - enet_uint32 fragmentCount = (packet -> dataLength + fragmentLength - 1) / fragmentLength, - fragmentNumber, - fragmentOffset; - enet_uint8 commandNumber; - enet_uint16 startSequenceNumber; - ENetList fragments; - ENetOutgoingCommand * fragment; - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT) - return -1; - - if ((packet -> flags & (ENET_PACKET_FLAG_RELIABLE | ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT)) == ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT && - channel -> outgoingUnreliableSequenceNumber < 0xFFFF) - { - commandNumber = ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT; - startSequenceNumber = ENET_HOST_TO_NET_16 (channel -> outgoingUnreliableSequenceNumber + 1); - } - else - { - commandNumber = ENET_PROTOCOL_COMMAND_SEND_FRAGMENT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - startSequenceNumber = ENET_HOST_TO_NET_16 (channel -> outgoingReliableSequenceNumber + 1); - } - - enet_list_clear (& fragments); - - for (fragmentNumber = 0, - fragmentOffset = 0; - fragmentOffset < packet -> dataLength; - ++ fragmentNumber, - fragmentOffset += fragmentLength) - { - if (packet -> dataLength - fragmentOffset < fragmentLength) - fragmentLength = packet -> dataLength - fragmentOffset; - - fragment = (ENetOutgoingCommand *) enet_malloc (sizeof (ENetOutgoingCommand)); - if (fragment == NULL) - { - while (! enet_list_empty (& fragments)) - { - fragment = (ENetOutgoingCommand *) enet_list_remove (enet_list_begin (& fragments)); - - enet_free (fragment); - } - - return -1; - } - - fragment -> fragmentOffset = fragmentOffset; - fragment -> fragmentLength = fragmentLength; - fragment -> packet = packet; - fragment -> command.header.command = commandNumber; - fragment -> command.header.channelID = channelID; - fragment -> command.sendFragment.startSequenceNumber = startSequenceNumber; - fragment -> command.sendFragment.dataLength = ENET_HOST_TO_NET_16 (fragmentLength); - fragment -> command.sendFragment.fragmentCount = ENET_HOST_TO_NET_32 (fragmentCount); - fragment -> command.sendFragment.fragmentNumber = ENET_HOST_TO_NET_32 (fragmentNumber); - fragment -> command.sendFragment.totalLength = ENET_HOST_TO_NET_32 (packet -> dataLength); - fragment -> command.sendFragment.fragmentOffset = ENET_NET_TO_HOST_32 (fragmentOffset); - - enet_list_insert (enet_list_end (& fragments), fragment); - } - - packet -> referenceCount += fragmentNumber; - - while (! enet_list_empty (& fragments)) - { - fragment = (ENetOutgoingCommand *) enet_list_remove (enet_list_begin (& fragments)); - - enet_peer_setup_outgoing_command (peer, fragment); - } - - return 0; - } - - command.header.channelID = channelID; - - if ((packet -> flags & (ENET_PACKET_FLAG_RELIABLE | ENET_PACKET_FLAG_UNSEQUENCED)) == ENET_PACKET_FLAG_UNSEQUENCED) - { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED | ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - command.sendUnsequenced.dataLength = ENET_HOST_TO_NET_16 (packet -> dataLength); - } - else - if (packet -> flags & ENET_PACKET_FLAG_RELIABLE || channel -> outgoingUnreliableSequenceNumber >= 0xFFFF) - { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_RELIABLE | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.sendReliable.dataLength = ENET_HOST_TO_NET_16 (packet -> dataLength); - } - else - { - command.header.command = ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE; - command.sendUnreliable.dataLength = ENET_HOST_TO_NET_16 (packet -> dataLength); - } - - if (enet_peer_queue_outgoing_command (peer, & command, packet, 0, packet -> dataLength) == NULL) - return -1; - - return 0; -} - -/** Attempts to dequeue any incoming queued packet. - @param peer peer to dequeue packets from - @param channelID holds the channel ID of the channel the packet was received on success - @returns a pointer to the packet, or NULL if there are no available incoming queued packets -*/ -ENetPacket * -enet_peer_receive (ENetPeer * peer, enet_uint8 * channelID) -{ - ENetIncomingCommand * incomingCommand; - ENetPacket * packet; - - if (enet_list_empty (& peer -> dispatchedCommands)) - return NULL; - - incomingCommand = (ENetIncomingCommand *) enet_list_remove (enet_list_begin (& peer -> dispatchedCommands)); - - if (channelID != NULL) - * channelID = incomingCommand -> command.header.channelID; - - packet = incomingCommand -> packet; - - -- packet -> referenceCount; - - if (incomingCommand -> fragments != NULL) - enet_free (incomingCommand -> fragments); - - enet_free (incomingCommand); - - peer -> totalWaitingData -= ENET_MIN (peer -> totalWaitingData, packet -> dataLength); - - return packet; -} - -static void -enet_peer_reset_outgoing_commands (ENetPeer * peer, ENetList * queue) -{ - ENetOutgoingCommand * outgoingCommand; - - while (! enet_list_empty (queue)) - { - outgoingCommand = (ENetOutgoingCommand *) enet_list_remove (enet_list_begin (queue)); - - if (outgoingCommand -> packet != NULL) - { - -- outgoingCommand -> packet -> referenceCount; - - if (outgoingCommand -> packet -> referenceCount == 0) - enet_packet_destroy (outgoingCommand -> packet); - } - - enet_free (outgoingCommand); - } -} - -static void -enet_peer_remove_incoming_commands (ENetPeer * peer, ENetList * queue, ENetListIterator startCommand, ENetListIterator endCommand, ENetIncomingCommand * excludeCommand) -{ - ENetListIterator currentCommand; - - for (currentCommand = startCommand; currentCommand != endCommand; ) - { - ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand; - - currentCommand = enet_list_next (currentCommand); - - if (incomingCommand == excludeCommand) - continue; - - enet_list_remove (& incomingCommand -> incomingCommandList); - - if (incomingCommand -> packet != NULL) - { - -- incomingCommand -> packet -> referenceCount; - - peer -> totalWaitingData -= ENET_MIN (peer -> totalWaitingData, incomingCommand -> packet -> dataLength); - - if (incomingCommand -> packet -> referenceCount == 0) - enet_packet_destroy (incomingCommand -> packet); - } - - if (incomingCommand -> fragments != NULL) - enet_free (incomingCommand -> fragments); - - enet_free (incomingCommand); - } -} - -static void -enet_peer_reset_incoming_commands (ENetPeer * peer, ENetList * queue) -{ - enet_peer_remove_incoming_commands(peer, queue, enet_list_begin (queue), enet_list_end (queue), NULL); -} - -void -enet_peer_reset_queues (ENetPeer * peer) -{ - ENetChannel * channel; - - if (peer -> flags & ENET_PEER_FLAG_NEEDS_DISPATCH) - { - enet_list_remove (& peer -> dispatchList); - - peer -> flags &= ~ ENET_PEER_FLAG_NEEDS_DISPATCH; - } - - while (! enet_list_empty (& peer -> acknowledgements)) - enet_free (enet_list_remove (enet_list_begin (& peer -> acknowledgements))); - - enet_peer_reset_outgoing_commands (peer, & peer -> sentReliableCommands); - enet_peer_reset_outgoing_commands (peer, & peer -> outgoingCommands); - enet_peer_reset_outgoing_commands (peer, & peer -> outgoingSendReliableCommands); - enet_peer_reset_incoming_commands (peer, & peer -> dispatchedCommands); - - if (peer -> channels != NULL && peer -> channelCount > 0) - { - for (channel = peer -> channels; - channel < & peer -> channels [peer -> channelCount]; - ++ channel) - { - enet_peer_reset_incoming_commands (peer, & channel -> incomingReliableCommands); - enet_peer_reset_incoming_commands (peer, & channel -> incomingUnreliableCommands); - } - - enet_free (peer -> channels); - } - - peer -> channels = NULL; - peer -> channelCount = 0; -} - -void -enet_peer_on_connect (ENetPeer * peer) -{ - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - { - if (peer -> incomingBandwidth != 0) - ++ peer -> host -> bandwidthLimitedPeers; - - ++ peer -> host -> connectedPeers; - } -} - -void -enet_peer_on_disconnect (ENetPeer * peer) -{ - if (peer -> state == ENET_PEER_STATE_CONNECTED || peer -> state == ENET_PEER_STATE_DISCONNECT_LATER) - { - if (peer -> incomingBandwidth != 0) - -- peer -> host -> bandwidthLimitedPeers; - - -- peer -> host -> connectedPeers; - } -} - -/** Forcefully disconnects a peer. - @param peer peer to forcefully disconnect - @remarks The foreign host represented by the peer is not notified of the disconnection and will timeout - on its connection to the local host. -*/ -void -enet_peer_reset (ENetPeer * peer) -{ - enet_peer_on_disconnect (peer); - - peer -> outgoingPeerID = ENET_PROTOCOL_MAXIMUM_PEER_ID; - peer -> connectID = 0; - - peer -> state = ENET_PEER_STATE_DISCONNECTED; - - peer -> incomingBandwidth = 0; - peer -> outgoingBandwidth = 0; - peer -> incomingBandwidthThrottleEpoch = 0; - peer -> outgoingBandwidthThrottleEpoch = 0; - peer -> incomingDataTotal = 0; - peer -> outgoingDataTotal = 0; - peer -> lastSendTime = 0; - peer -> lastReceiveTime = 0; - peer -> nextTimeout = 0; - peer -> earliestTimeout = 0; - peer -> packetLossEpoch = 0; - peer -> packetsSent = 0; - peer -> packetsLost = 0; - peer -> packetLoss = 0; - peer -> packetLossVariance = 0; - peer -> packetThrottle = ENET_PEER_DEFAULT_PACKET_THROTTLE; - peer -> packetThrottleLimit = ENET_PEER_PACKET_THROTTLE_SCALE; - peer -> packetThrottleCounter = 0; - peer -> packetThrottleEpoch = 0; - peer -> packetThrottleAcceleration = ENET_PEER_PACKET_THROTTLE_ACCELERATION; - peer -> packetThrottleDeceleration = ENET_PEER_PACKET_THROTTLE_DECELERATION; - peer -> packetThrottleInterval = ENET_PEER_PACKET_THROTTLE_INTERVAL; - peer -> pingInterval = ENET_PEER_PING_INTERVAL; - peer -> timeoutLimit = ENET_PEER_TIMEOUT_LIMIT; - peer -> timeoutMinimum = ENET_PEER_TIMEOUT_MINIMUM; - peer -> timeoutMaximum = ENET_PEER_TIMEOUT_MAXIMUM; - peer -> lastRoundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer -> lowestRoundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer -> lastRoundTripTimeVariance = 0; - peer -> highestRoundTripTimeVariance = 0; - peer -> roundTripTime = ENET_PEER_DEFAULT_ROUND_TRIP_TIME; - peer -> roundTripTimeVariance = 0; - peer -> mtu = peer -> host -> mtu; - peer -> reliableDataInTransit = 0; - peer -> outgoingReliableSequenceNumber = 0; - peer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - peer -> incomingUnsequencedGroup = 0; - peer -> outgoingUnsequencedGroup = 0; - peer -> eventData = 0; - peer -> totalWaitingData = 0; - peer -> flags = 0; - - memset (peer -> unsequencedWindow, 0, sizeof (peer -> unsequencedWindow)); - - enet_peer_reset_queues (peer); -} - -/** Sends a ping request to a peer. - @param peer destination for the ping request - @remarks ping requests factor into the mean round trip time as designated by the - roundTripTime field in the ENetPeer structure. ENet automatically pings all connected - peers at regular intervals, however, this function may be called to ensure more - frequent ping requests. -*/ -void -enet_peer_ping (ENetPeer * peer) -{ - ENetProtocol command; - - if (peer -> state != ENET_PEER_STATE_CONNECTED) - return; - - command.header.command = ENET_PROTOCOL_COMMAND_PING | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - command.header.channelID = 0xFF; - - enet_peer_queue_outgoing_command (peer, & command, NULL, 0, 0); -} - -/** Sets the interval at which pings will be sent to a peer. - - Pings are used both to monitor the liveness of the connection and also to dynamically - adjust the throttle during periods of low traffic so that the throttle has reasonable - responsiveness during traffic spikes. - - @param peer the peer to adjust - @param pingInterval the interval at which to send pings; defaults to ENET_PEER_PING_INTERVAL if 0 -*/ -void -enet_peer_ping_interval (ENetPeer * peer, enet_uint32 pingInterval) -{ - peer -> pingInterval = pingInterval ? pingInterval : ENET_PEER_PING_INTERVAL; -} - -/** Sets the timeout parameters for a peer. - - The timeout parameter control how and when a peer will timeout from a failure to acknowledge - reliable traffic. Timeout values use an exponential backoff mechanism, where if a reliable - packet is not acknowledge within some multiple of the average RTT plus a variance tolerance, - the timeout will be doubled until it reaches a set limit. If the timeout is thus at this - limit and reliable packets have been sent but not acknowledged within a certain minimum time - period, the peer will be disconnected. Alternatively, if reliable packets have been sent - but not acknowledged for a certain maximum time period, the peer will be disconnected regardless - of the current timeout limit value. - - @param peer the peer to adjust - @param timeoutLimit the timeout limit; defaults to ENET_PEER_TIMEOUT_LIMIT if 0 - @param timeoutMinimum the timeout minimum; defaults to ENET_PEER_TIMEOUT_MINIMUM if 0 - @param timeoutMaximum the timeout maximum; defaults to ENET_PEER_TIMEOUT_MAXIMUM if 0 -*/ - -void -enet_peer_timeout (ENetPeer * peer, enet_uint32 timeoutLimit, enet_uint32 timeoutMinimum, enet_uint32 timeoutMaximum) -{ - peer -> timeoutLimit = timeoutLimit ? timeoutLimit : ENET_PEER_TIMEOUT_LIMIT; - peer -> timeoutMinimum = timeoutMinimum ? timeoutMinimum : ENET_PEER_TIMEOUT_MINIMUM; - peer -> timeoutMaximum = timeoutMaximum ? timeoutMaximum : ENET_PEER_TIMEOUT_MAXIMUM; -} - -/** Force an immediate disconnection from a peer. - @param peer peer to disconnect - @param data data describing the disconnection - @remarks No ENET_EVENT_DISCONNECT event will be generated. The foreign peer is not - guaranteed to receive the disconnect notification, and is reset immediately upon - return from this function. -*/ -void -enet_peer_disconnect_now (ENetPeer * peer, enet_uint32 data) -{ - ENetProtocol command; - - if (peer -> state == ENET_PEER_STATE_DISCONNECTED) - return; - - if (peer -> state != ENET_PEER_STATE_ZOMBIE && - peer -> state != ENET_PEER_STATE_DISCONNECTING) - { - enet_peer_reset_queues (peer); - - command.header.command = ENET_PROTOCOL_COMMAND_DISCONNECT | ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - command.header.channelID = 0xFF; - command.disconnect.data = ENET_HOST_TO_NET_32 (data); - - enet_peer_queue_outgoing_command (peer, & command, NULL, 0, 0); - - enet_host_flush (peer -> host); - } - - enet_peer_reset (peer); -} - -/** Request a disconnection from a peer. - @param peer peer to request a disconnection - @param data data describing the disconnection - @remarks An ENET_EVENT_DISCONNECT event will be generated by enet_host_service() - once the disconnection is complete. -*/ -void -enet_peer_disconnect (ENetPeer * peer, enet_uint32 data) -{ - ENetProtocol command; - - if (peer -> state == ENET_PEER_STATE_DISCONNECTING || - peer -> state == ENET_PEER_STATE_DISCONNECTED || - peer -> state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT || - peer -> state == ENET_PEER_STATE_ZOMBIE) - return; - - enet_peer_reset_queues (peer); - - command.header.command = ENET_PROTOCOL_COMMAND_DISCONNECT; - command.header.channelID = 0xFF; - command.disconnect.data = ENET_HOST_TO_NET_32 (data); - - if (peer -> state == ENET_PEER_STATE_CONNECTED || peer -> state == ENET_PEER_STATE_DISCONNECT_LATER) - command.header.command |= ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - else - command.header.command |= ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED; - - enet_peer_queue_outgoing_command (peer, & command, NULL, 0, 0); - - if (peer -> state == ENET_PEER_STATE_CONNECTED || peer -> state == ENET_PEER_STATE_DISCONNECT_LATER) - { - enet_peer_on_disconnect (peer); - - peer -> state = ENET_PEER_STATE_DISCONNECTING; - } - else - { - enet_host_flush (peer -> host); - enet_peer_reset (peer); - } -} - -int -enet_peer_has_outgoing_commands (ENetPeer * peer) -{ - if (enet_list_empty (& peer -> outgoingCommands) && - enet_list_empty (& peer -> outgoingSendReliableCommands) && - enet_list_empty (& peer -> sentReliableCommands)) - return 0; - - return 1; -} - -/** Request a disconnection from a peer, but only after all queued outgoing packets are sent. - @param peer peer to request a disconnection - @param data data describing the disconnection - @remarks An ENET_EVENT_DISCONNECT event will be generated by enet_host_service() - once the disconnection is complete. -*/ -void -enet_peer_disconnect_later (ENetPeer * peer, enet_uint32 data) -{ - if ((peer -> state == ENET_PEER_STATE_CONNECTED || peer -> state == ENET_PEER_STATE_DISCONNECT_LATER) && - enet_peer_has_outgoing_commands (peer)) - { - peer -> state = ENET_PEER_STATE_DISCONNECT_LATER; - peer -> eventData = data; - } - else - enet_peer_disconnect (peer, data); -} - -ENetAcknowledgement * -enet_peer_queue_acknowledgement (ENetPeer * peer, const ENetProtocol * command, enet_uint16 sentTime) -{ - ENetAcknowledgement * acknowledgement; - - if (command -> header.channelID < peer -> channelCount) - { - ENetChannel * channel = & peer -> channels [command -> header.channelID]; - enet_uint16 reliableWindow = command -> header.reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE, - currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (command -> header.reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - - if (reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1 && reliableWindow <= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS) - return NULL; - } - - acknowledgement = (ENetAcknowledgement *) enet_malloc (sizeof (ENetAcknowledgement)); - if (acknowledgement == NULL) - return NULL; - - peer -> outgoingDataTotal += sizeof (ENetProtocolAcknowledge); - - acknowledgement -> sentTime = sentTime; - acknowledgement -> command = * command; - - enet_list_insert (enet_list_end (& peer -> acknowledgements), acknowledgement); - - return acknowledgement; -} - -void -enet_peer_setup_outgoing_command (ENetPeer * peer, ENetOutgoingCommand * outgoingCommand) -{ - peer -> outgoingDataTotal += enet_protocol_command_size (outgoingCommand -> command.header.command) + outgoingCommand -> fragmentLength; - - if (outgoingCommand -> command.header.channelID == 0xFF) - { - ++ peer -> outgoingReliableSequenceNumber; - - outgoingCommand -> reliableSequenceNumber = peer -> outgoingReliableSequenceNumber; - outgoingCommand -> unreliableSequenceNumber = 0; - } - else - { - ENetChannel * channel = & peer -> channels [outgoingCommand -> command.header.channelID]; - - if (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) - { - ++ channel -> outgoingReliableSequenceNumber; - channel -> outgoingUnreliableSequenceNumber = 0; - - outgoingCommand -> reliableSequenceNumber = channel -> outgoingReliableSequenceNumber; - outgoingCommand -> unreliableSequenceNumber = 0; - } - else - if (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_UNSEQUENCED) - { - ++ peer -> outgoingUnsequencedGroup; - - outgoingCommand -> reliableSequenceNumber = 0; - outgoingCommand -> unreliableSequenceNumber = 0; - } - else - { - if (outgoingCommand -> fragmentOffset == 0) - ++ channel -> outgoingUnreliableSequenceNumber; - - outgoingCommand -> reliableSequenceNumber = channel -> outgoingReliableSequenceNumber; - outgoingCommand -> unreliableSequenceNumber = channel -> outgoingUnreliableSequenceNumber; - } - } - - outgoingCommand -> sendAttempts = 0; - outgoingCommand -> sentTime = 0; - outgoingCommand -> roundTripTimeout = 0; - outgoingCommand -> command.header.reliableSequenceNumber = ENET_HOST_TO_NET_16 (outgoingCommand -> reliableSequenceNumber); - outgoingCommand -> queueTime = ++ peer -> host -> totalQueued; - - switch (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) - { - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - outgoingCommand -> command.sendUnreliable.unreliableSequenceNumber = ENET_HOST_TO_NET_16 (outgoingCommand -> unreliableSequenceNumber); - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - outgoingCommand -> command.sendUnsequenced.unsequencedGroup = ENET_HOST_TO_NET_16 (peer -> outgoingUnsequencedGroup); - break; - - default: - break; - } - - if ((outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) != 0 && - outgoingCommand -> packet != NULL) - enet_list_insert (enet_list_end (& peer -> outgoingSendReliableCommands), outgoingCommand); - else - enet_list_insert (enet_list_end (& peer -> outgoingCommands), outgoingCommand); -} - -ENetOutgoingCommand * -enet_peer_queue_outgoing_command (ENetPeer * peer, const ENetProtocol * command, ENetPacket * packet, enet_uint32 offset, enet_uint16 length) -{ - ENetOutgoingCommand * outgoingCommand = (ENetOutgoingCommand *) enet_malloc (sizeof (ENetOutgoingCommand)); - if (outgoingCommand == NULL) - return NULL; - - outgoingCommand -> command = * command; - outgoingCommand -> fragmentOffset = offset; - outgoingCommand -> fragmentLength = length; - outgoingCommand -> packet = packet; - if (packet != NULL) - ++ packet -> referenceCount; - - enet_peer_setup_outgoing_command (peer, outgoingCommand); - - return outgoingCommand; -} - -void -enet_peer_dispatch_incoming_unreliable_commands (ENetPeer * peer, ENetChannel * channel, ENetIncomingCommand * queuedCommand) -{ - ENetListIterator droppedCommand, startCommand, currentCommand; - - for (droppedCommand = startCommand = currentCommand = enet_list_begin (& channel -> incomingUnreliableCommands); - currentCommand != enet_list_end (& channel -> incomingUnreliableCommands); - currentCommand = enet_list_next (currentCommand)) - { - ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand; - - if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) - continue; - - if (incomingCommand -> reliableSequenceNumber == channel -> incomingReliableSequenceNumber) - { - if (incomingCommand -> fragmentsRemaining <= 0) - { - channel -> incomingUnreliableSequenceNumber = incomingCommand -> unreliableSequenceNumber; - continue; - } - - if (startCommand != currentCommand) - { - enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand)); - - if (! (peer -> flags & ENET_PEER_FLAG_NEEDS_DISPATCH)) - { - enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList); - - peer -> flags |= ENET_PEER_FLAG_NEEDS_DISPATCH; - } - - droppedCommand = currentCommand; - } - else - if (droppedCommand != currentCommand) - droppedCommand = enet_list_previous (currentCommand); - } - else - { - enet_uint16 reliableWindow = incomingCommand -> reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE, - currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - if (reliableWindow >= currentWindow && reliableWindow < currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) - break; - - droppedCommand = enet_list_next (currentCommand); - - if (startCommand != currentCommand) - { - enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand)); - - if (! (peer -> flags & ENET_PEER_FLAG_NEEDS_DISPATCH)) - { - enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList); - - peer -> flags |= ENET_PEER_FLAG_NEEDS_DISPATCH; - } - } - } - - startCommand = enet_list_next (currentCommand); - } - - if (startCommand != currentCommand) - { - enet_list_move (enet_list_end (& peer -> dispatchedCommands), startCommand, enet_list_previous (currentCommand)); - - if (! (peer -> flags & ENET_PEER_FLAG_NEEDS_DISPATCH)) - { - enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList); - - peer -> flags |= ENET_PEER_FLAG_NEEDS_DISPATCH; - } - - droppedCommand = currentCommand; - } - - enet_peer_remove_incoming_commands (peer, & channel -> incomingUnreliableCommands, enet_list_begin (& channel -> incomingUnreliableCommands), droppedCommand, queuedCommand); -} - -void -enet_peer_dispatch_incoming_reliable_commands (ENetPeer * peer, ENetChannel * channel, ENetIncomingCommand * queuedCommand) -{ - ENetListIterator currentCommand; - - for (currentCommand = enet_list_begin (& channel -> incomingReliableCommands); - currentCommand != enet_list_end (& channel -> incomingReliableCommands); - currentCommand = enet_list_next (currentCommand)) - { - ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (incomingCommand -> fragmentsRemaining > 0 || - incomingCommand -> reliableSequenceNumber != (enet_uint16) (channel -> incomingReliableSequenceNumber + 1)) - break; - - channel -> incomingReliableSequenceNumber = incomingCommand -> reliableSequenceNumber; - - if (incomingCommand -> fragmentCount > 0) - channel -> incomingReliableSequenceNumber += incomingCommand -> fragmentCount - 1; - } - - if (currentCommand == enet_list_begin (& channel -> incomingReliableCommands)) - return; - - channel -> incomingUnreliableSequenceNumber = 0; - - enet_list_move (enet_list_end (& peer -> dispatchedCommands), enet_list_begin (& channel -> incomingReliableCommands), enet_list_previous (currentCommand)); - - if (! (peer -> flags & ENET_PEER_FLAG_NEEDS_DISPATCH)) - { - enet_list_insert (enet_list_end (& peer -> host -> dispatchQueue), & peer -> dispatchList); - - peer -> flags |= ENET_PEER_FLAG_NEEDS_DISPATCH; - } - - if (! enet_list_empty (& channel -> incomingUnreliableCommands)) - enet_peer_dispatch_incoming_unreliable_commands (peer, channel, queuedCommand); -} - -ENetIncomingCommand * -enet_peer_queue_incoming_command (ENetPeer * peer, const ENetProtocol * command, const void * data, size_t dataLength, enet_uint32 flags, enet_uint32 fragmentCount) -{ - static ENetIncomingCommand dummyCommand; - - ENetChannel * channel = & peer -> channels [command -> header.channelID]; - enet_uint32 unreliableSequenceNumber = 0, reliableSequenceNumber = 0; - enet_uint16 reliableWindow, currentWindow; - ENetIncomingCommand * incomingCommand; - ENetListIterator currentCommand; - ENetPacket * packet = NULL; - - if (peer -> state == ENET_PEER_STATE_DISCONNECT_LATER) - goto discardCommand; - - if ((command -> header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) - { - reliableSequenceNumber = command -> header.reliableSequenceNumber; - reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - - if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) - goto discardCommand; - } - - switch (command -> header.command & ENET_PROTOCOL_COMMAND_MASK) - { - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - if (reliableSequenceNumber == channel -> incomingReliableSequenceNumber) - goto discardCommand; - - for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingReliableCommands)); - currentCommand != enet_list_end (& channel -> incomingReliableCommands); - currentCommand = enet_list_previous (currentCommand)) - { - incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - { - if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - continue; - } - else - if (incomingCommand -> reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - break; - - if (incomingCommand -> reliableSequenceNumber <= reliableSequenceNumber) - { - if (incomingCommand -> reliableSequenceNumber < reliableSequenceNumber) - break; - - goto discardCommand; - } - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT: - unreliableSequenceNumber = ENET_NET_TO_HOST_16 (command -> sendUnreliable.unreliableSequenceNumber); - - if (reliableSequenceNumber == channel -> incomingReliableSequenceNumber && - unreliableSequenceNumber <= channel -> incomingUnreliableSequenceNumber) - goto discardCommand; - - for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingUnreliableCommands)); - currentCommand != enet_list_end (& channel -> incomingUnreliableCommands); - currentCommand = enet_list_previous (currentCommand)) - { - incomingCommand = (ENetIncomingCommand *) currentCommand; - - if ((command -> header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED) - continue; - - if (reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - { - if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - continue; - } - else - if (incomingCommand -> reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - break; - - if (incomingCommand -> reliableSequenceNumber < reliableSequenceNumber) - break; - - if (incomingCommand -> reliableSequenceNumber > reliableSequenceNumber) - continue; - - if (incomingCommand -> unreliableSequenceNumber <= unreliableSequenceNumber) - { - if (incomingCommand -> unreliableSequenceNumber < unreliableSequenceNumber) - break; - - goto discardCommand; - } - } - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - currentCommand = enet_list_end (& channel -> incomingUnreliableCommands); - break; - - default: - goto discardCommand; - } - - if (peer -> totalWaitingData >= peer -> host -> maximumWaitingData) - goto notifyError; - - packet = enet_packet_create (data, dataLength, flags); - if (packet == NULL) - goto notifyError; - - incomingCommand = (ENetIncomingCommand *) enet_malloc (sizeof (ENetIncomingCommand)); - if (incomingCommand == NULL) - goto notifyError; - - incomingCommand -> reliableSequenceNumber = command -> header.reliableSequenceNumber; - incomingCommand -> unreliableSequenceNumber = unreliableSequenceNumber & 0xFFFF; - incomingCommand -> command = * command; - incomingCommand -> fragmentCount = fragmentCount; - incomingCommand -> fragmentsRemaining = fragmentCount; - incomingCommand -> packet = packet; - incomingCommand -> fragments = NULL; - - if (fragmentCount > 0) - { - if (fragmentCount <= ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT) - incomingCommand -> fragments = (enet_uint32 *) enet_malloc ((fragmentCount + 31) / 32 * sizeof (enet_uint32)); - if (incomingCommand -> fragments == NULL) - { - enet_free (incomingCommand); - - goto notifyError; - } - memset (incomingCommand -> fragments, 0, (fragmentCount + 31) / 32 * sizeof (enet_uint32)); - } - - if (packet != NULL) - { - ++ packet -> referenceCount; - - peer -> totalWaitingData += packet -> dataLength; - } - - enet_list_insert (enet_list_next (currentCommand), incomingCommand); - - switch (command -> header.command & ENET_PROTOCOL_COMMAND_MASK) - { - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - enet_peer_dispatch_incoming_reliable_commands (peer, channel, incomingCommand); - break; - - default: - enet_peer_dispatch_incoming_unreliable_commands (peer, channel, incomingCommand); - break; - } - - return incomingCommand; - -discardCommand: - if (fragmentCount > 0) - goto notifyError; - - if (packet != NULL && packet -> referenceCount == 0) - enet_packet_destroy (packet); - - return & dummyCommand; - -notifyError: - if (packet != NULL && packet -> referenceCount == 0) - enet_packet_destroy (packet); - - return NULL; -} - -/** @} */ diff --git a/deps/enet/src/protocol.c b/deps/enet/src/protocol.c deleted file mode 100644 index 6f18efa..0000000 --- a/deps/enet/src/protocol.c +++ /dev/null @@ -1,1921 +0,0 @@ -/** - @file protocol.c - @brief ENet protocol functions -*/ -#include <stdio.h> -#include <string.h> -#define ENET_BUILDING_LIB 1 -#include "enet/utility.h" -#include "enet/time.h" -#include "enet/enet.h" - -static const size_t commandSizes [ENET_PROTOCOL_COMMAND_COUNT] = -{ - 0, - sizeof (ENetProtocolAcknowledge), - sizeof (ENetProtocolConnect), - sizeof (ENetProtocolVerifyConnect), - sizeof (ENetProtocolDisconnect), - sizeof (ENetProtocolPing), - sizeof (ENetProtocolSendReliable), - sizeof (ENetProtocolSendUnreliable), - sizeof (ENetProtocolSendFragment), - sizeof (ENetProtocolSendUnsequenced), - sizeof (ENetProtocolBandwidthLimit), - sizeof (ENetProtocolThrottleConfigure), - sizeof (ENetProtocolSendFragment) -}; - -size_t -enet_protocol_command_size (enet_uint8 commandNumber) -{ - return commandSizes [commandNumber & ENET_PROTOCOL_COMMAND_MASK]; -} - -static void -enet_protocol_change_state (ENetHost * host, ENetPeer * peer, ENetPeerState state) -{ - if (state == ENET_PEER_STATE_CONNECTED || state == ENET_PEER_STATE_DISCONNECT_LATER) - enet_peer_on_connect (peer); - else - enet_peer_on_disconnect (peer); - - peer -> state = state; -} - -static void -enet_protocol_dispatch_state (ENetHost * host, ENetPeer * peer, ENetPeerState state) -{ - enet_protocol_change_state (host, peer, state); - - if (! (peer -> flags & ENET_PEER_FLAG_NEEDS_DISPATCH)) - { - enet_list_insert (enet_list_end (& host -> dispatchQueue), & peer -> dispatchList); - - peer -> flags |= ENET_PEER_FLAG_NEEDS_DISPATCH; - } -} - -static int -enet_protocol_dispatch_incoming_commands (ENetHost * host, ENetEvent * event) -{ - while (! enet_list_empty (& host -> dispatchQueue)) - { - ENetPeer * peer = (ENetPeer *) enet_list_remove (enet_list_begin (& host -> dispatchQueue)); - - peer -> flags &= ~ ENET_PEER_FLAG_NEEDS_DISPATCH; - - switch (peer -> state) - { - case ENET_PEER_STATE_CONNECTION_PENDING: - case ENET_PEER_STATE_CONNECTION_SUCCEEDED: - enet_protocol_change_state (host, peer, ENET_PEER_STATE_CONNECTED); - - event -> type = ENET_EVENT_TYPE_CONNECT; - event -> peer = peer; - event -> data = peer -> eventData; - - return 1; - - case ENET_PEER_STATE_ZOMBIE: - host -> recalculateBandwidthLimits = 1; - - event -> type = ENET_EVENT_TYPE_DISCONNECT; - event -> peer = peer; - event -> data = peer -> eventData; - - enet_peer_reset (peer); - - return 1; - - case ENET_PEER_STATE_CONNECTED: - if (enet_list_empty (& peer -> dispatchedCommands)) - continue; - - event -> packet = enet_peer_receive (peer, & event -> channelID); - if (event -> packet == NULL) - continue; - - event -> type = ENET_EVENT_TYPE_RECEIVE; - event -> peer = peer; - - if (! enet_list_empty (& peer -> dispatchedCommands)) - { - peer -> flags |= ENET_PEER_FLAG_NEEDS_DISPATCH; - - enet_list_insert (enet_list_end (& host -> dispatchQueue), & peer -> dispatchList); - } - - return 1; - - default: - break; - } - } - - return 0; -} - -static void -enet_protocol_notify_connect (ENetHost * host, ENetPeer * peer, ENetEvent * event) -{ - host -> recalculateBandwidthLimits = 1; - - if (event != NULL) - { - enet_protocol_change_state (host, peer, ENET_PEER_STATE_CONNECTED); - - event -> type = ENET_EVENT_TYPE_CONNECT; - event -> peer = peer; - event -> data = peer -> eventData; - } - else - enet_protocol_dispatch_state (host, peer, peer -> state == ENET_PEER_STATE_CONNECTING ? ENET_PEER_STATE_CONNECTION_SUCCEEDED : ENET_PEER_STATE_CONNECTION_PENDING); -} - -static void -enet_protocol_notify_disconnect (ENetHost * host, ENetPeer * peer, ENetEvent * event) -{ - if (peer -> state >= ENET_PEER_STATE_CONNECTION_PENDING) - host -> recalculateBandwidthLimits = 1; - - if (peer -> state != ENET_PEER_STATE_CONNECTING && peer -> state < ENET_PEER_STATE_CONNECTION_SUCCEEDED) - enet_peer_reset (peer); - else - if (event != NULL) - { - event -> type = ENET_EVENT_TYPE_DISCONNECT; - event -> peer = peer; - event -> data = 0; - - enet_peer_reset (peer); - } - else - { - peer -> eventData = 0; - - enet_protocol_dispatch_state (host, peer, ENET_PEER_STATE_ZOMBIE); - } -} - -static void -enet_protocol_remove_sent_unreliable_commands (ENetPeer * peer, ENetList * sentUnreliableCommands) -{ - ENetOutgoingCommand * outgoingCommand; - - if (enet_list_empty (sentUnreliableCommands)) - return; - - do - { - outgoingCommand = (ENetOutgoingCommand *) enet_list_front (sentUnreliableCommands); - - enet_list_remove (& outgoingCommand -> outgoingCommandList); - - if (outgoingCommand -> packet != NULL) - { - -- outgoingCommand -> packet -> referenceCount; - - if (outgoingCommand -> packet -> referenceCount == 0) - { - outgoingCommand -> packet -> flags |= ENET_PACKET_FLAG_SENT; - - enet_packet_destroy (outgoingCommand -> packet); - } - } - - enet_free (outgoingCommand); - } while (! enet_list_empty (sentUnreliableCommands)); - - if (peer -> state == ENET_PEER_STATE_DISCONNECT_LATER && - ! enet_peer_has_outgoing_commands (peer)) - enet_peer_disconnect (peer, peer -> eventData); -} - -static ENetOutgoingCommand * -enet_protocol_find_sent_reliable_command (ENetList * list, enet_uint16 reliableSequenceNumber, enet_uint8 channelID) -{ - ENetListIterator currentCommand; - - for (currentCommand = enet_list_begin (list); - currentCommand != enet_list_end (list); - currentCommand = enet_list_next (currentCommand)) - { - ENetOutgoingCommand * outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (! (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE)) - continue; - - if (outgoingCommand -> sendAttempts < 1) - break; - - if (outgoingCommand -> reliableSequenceNumber == reliableSequenceNumber && - outgoingCommand -> command.header.channelID == channelID) - return outgoingCommand; - } - - return NULL; -} - -static ENetProtocolCommand -enet_protocol_remove_sent_reliable_command (ENetPeer * peer, enet_uint16 reliableSequenceNumber, enet_uint8 channelID) -{ - ENetOutgoingCommand * outgoingCommand = NULL; - ENetListIterator currentCommand; - ENetProtocolCommand commandNumber; - int wasSent = 1; - - for (currentCommand = enet_list_begin (& peer -> sentReliableCommands); - currentCommand != enet_list_end (& peer -> sentReliableCommands); - currentCommand = enet_list_next (currentCommand)) - { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (outgoingCommand -> reliableSequenceNumber == reliableSequenceNumber && - outgoingCommand -> command.header.channelID == channelID) - break; - } - - if (currentCommand == enet_list_end (& peer -> sentReliableCommands)) - { - outgoingCommand = enet_protocol_find_sent_reliable_command (& peer -> outgoingCommands, reliableSequenceNumber, channelID); - if (outgoingCommand == NULL) - outgoingCommand = enet_protocol_find_sent_reliable_command (& peer -> outgoingSendReliableCommands, reliableSequenceNumber, channelID); - - wasSent = 0; - } - - if (outgoingCommand == NULL) - return ENET_PROTOCOL_COMMAND_NONE; - - if (channelID < peer -> channelCount) - { - ENetChannel * channel = & peer -> channels [channelID]; - enet_uint16 reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (channel -> reliableWindows [reliableWindow] > 0) - { - -- channel -> reliableWindows [reliableWindow]; - if (! channel -> reliableWindows [reliableWindow]) - channel -> usedReliableWindows &= ~ (1u << reliableWindow); - } - } - - commandNumber = (ENetProtocolCommand) (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK); - - enet_list_remove (& outgoingCommand -> outgoingCommandList); - - if (outgoingCommand -> packet != NULL) - { - if (wasSent) - peer -> reliableDataInTransit -= outgoingCommand -> fragmentLength; - - -- outgoingCommand -> packet -> referenceCount; - - if (outgoingCommand -> packet -> referenceCount == 0) - { - outgoingCommand -> packet -> flags |= ENET_PACKET_FLAG_SENT; - - enet_packet_destroy (outgoingCommand -> packet); - } - } - - enet_free (outgoingCommand); - - if (enet_list_empty (& peer -> sentReliableCommands)) - return commandNumber; - - outgoingCommand = (ENetOutgoingCommand *) enet_list_front (& peer -> sentReliableCommands); - - peer -> nextTimeout = outgoingCommand -> sentTime + outgoingCommand -> roundTripTimeout; - - return commandNumber; -} - -static ENetPeer * -enet_protocol_handle_connect (ENetHost * host, ENetProtocolHeader * header, ENetProtocol * command) -{ - enet_uint8 incomingSessionID, outgoingSessionID; - enet_uint32 mtu, windowSize; - ENetChannel * channel; - size_t channelCount, duplicatePeers = 0; - ENetPeer * currentPeer, * peer = NULL; - ENetProtocol verifyCommand; - - channelCount = ENET_NET_TO_HOST_32 (command -> connect.channelCount); - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || - channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT) - return NULL; - - for (currentPeer = host -> peers; - currentPeer < & host -> peers [host -> peerCount]; - ++ currentPeer) - { - if (currentPeer -> state == ENET_PEER_STATE_DISCONNECTED) - { - if (peer == NULL) - peer = currentPeer; - } - else - if (currentPeer -> state != ENET_PEER_STATE_CONNECTING && - currentPeer -> address.host == host -> receivedAddress.host) - { - if (currentPeer -> address.port == host -> receivedAddress.port && - currentPeer -> connectID == command -> connect.connectID) - return NULL; - - ++ duplicatePeers; - } - } - - if (peer == NULL || duplicatePeers >= host -> duplicatePeers) - return NULL; - - if (channelCount > host -> channelLimit) - channelCount = host -> channelLimit; - peer -> channels = (ENetChannel *) enet_malloc (channelCount * sizeof (ENetChannel)); - if (peer -> channels == NULL) - return NULL; - peer -> channelCount = channelCount; - peer -> state = ENET_PEER_STATE_ACKNOWLEDGING_CONNECT; - peer -> connectID = command -> connect.connectID; - peer -> address = host -> receivedAddress; - peer -> mtu = host -> mtu; - peer -> outgoingPeerID = ENET_NET_TO_HOST_16 (command -> connect.outgoingPeerID); - peer -> incomingBandwidth = ENET_NET_TO_HOST_32 (command -> connect.incomingBandwidth); - peer -> outgoingBandwidth = ENET_NET_TO_HOST_32 (command -> connect.outgoingBandwidth); - peer -> packetThrottleInterval = ENET_NET_TO_HOST_32 (command -> connect.packetThrottleInterval); - peer -> packetThrottleAcceleration = ENET_NET_TO_HOST_32 (command -> connect.packetThrottleAcceleration); - peer -> packetThrottleDeceleration = ENET_NET_TO_HOST_32 (command -> connect.packetThrottleDeceleration); - peer -> eventData = ENET_NET_TO_HOST_32 (command -> connect.data); - - incomingSessionID = command -> connect.incomingSessionID == 0xFF ? peer -> outgoingSessionID : command -> connect.incomingSessionID; - incomingSessionID = (incomingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - if (incomingSessionID == peer -> outgoingSessionID) - incomingSessionID = (incomingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - peer -> outgoingSessionID = incomingSessionID; - - outgoingSessionID = command -> connect.outgoingSessionID == 0xFF ? peer -> incomingSessionID : command -> connect.outgoingSessionID; - outgoingSessionID = (outgoingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - if (outgoingSessionID == peer -> incomingSessionID) - outgoingSessionID = (outgoingSessionID + 1) & (ENET_PROTOCOL_HEADER_SESSION_MASK >> ENET_PROTOCOL_HEADER_SESSION_SHIFT); - peer -> incomingSessionID = outgoingSessionID; - - for (channel = peer -> channels; - channel < & peer -> channels [channelCount]; - ++ channel) - { - channel -> outgoingReliableSequenceNumber = 0; - channel -> outgoingUnreliableSequenceNumber = 0; - channel -> incomingReliableSequenceNumber = 0; - channel -> incomingUnreliableSequenceNumber = 0; - - enet_list_clear (& channel -> incomingReliableCommands); - enet_list_clear (& channel -> incomingUnreliableCommands); - - channel -> usedReliableWindows = 0; - memset (channel -> reliableWindows, 0, sizeof (channel -> reliableWindows)); - } - - mtu = ENET_NET_TO_HOST_32 (command -> connect.mtu); - - if (mtu < ENET_PROTOCOL_MINIMUM_MTU) - mtu = ENET_PROTOCOL_MINIMUM_MTU; - else - if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) - mtu = ENET_PROTOCOL_MAXIMUM_MTU; - - if (mtu < peer -> mtu) - peer -> mtu = mtu; - - if (host -> outgoingBandwidth == 0 && - peer -> incomingBandwidth == 0) - peer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - else - if (host -> outgoingBandwidth == 0 || - peer -> incomingBandwidth == 0) - peer -> windowSize = (ENET_MAX (host -> outgoingBandwidth, peer -> incomingBandwidth) / - ENET_PEER_WINDOW_SIZE_SCALE) * - ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - else - peer -> windowSize = (ENET_MIN (host -> outgoingBandwidth, peer -> incomingBandwidth) / - ENET_PEER_WINDOW_SIZE_SCALE) * - ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - - if (peer -> windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) - peer -> windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - else - if (peer -> windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) - peer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - - if (host -> incomingBandwidth == 0) - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - else - windowSize = (host -> incomingBandwidth / ENET_PEER_WINDOW_SIZE_SCALE) * - ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - - if (windowSize > ENET_NET_TO_HOST_32 (command -> connect.windowSize)) - windowSize = ENET_NET_TO_HOST_32 (command -> connect.windowSize); - - if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) - windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - else - if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - - verifyCommand.header.command = ENET_PROTOCOL_COMMAND_VERIFY_CONNECT | ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE; - verifyCommand.header.channelID = 0xFF; - verifyCommand.verifyConnect.outgoingPeerID = ENET_HOST_TO_NET_16 (peer -> incomingPeerID); - verifyCommand.verifyConnect.incomingSessionID = incomingSessionID; - verifyCommand.verifyConnect.outgoingSessionID = outgoingSessionID; - verifyCommand.verifyConnect.mtu = ENET_HOST_TO_NET_32 (peer -> mtu); - verifyCommand.verifyConnect.windowSize = ENET_HOST_TO_NET_32 (windowSize); - verifyCommand.verifyConnect.channelCount = ENET_HOST_TO_NET_32 (channelCount); - verifyCommand.verifyConnect.incomingBandwidth = ENET_HOST_TO_NET_32 (host -> incomingBandwidth); - verifyCommand.verifyConnect.outgoingBandwidth = ENET_HOST_TO_NET_32 (host -> outgoingBandwidth); - verifyCommand.verifyConnect.packetThrottleInterval = ENET_HOST_TO_NET_32 (peer -> packetThrottleInterval); - verifyCommand.verifyConnect.packetThrottleAcceleration = ENET_HOST_TO_NET_32 (peer -> packetThrottleAcceleration); - verifyCommand.verifyConnect.packetThrottleDeceleration = ENET_HOST_TO_NET_32 (peer -> packetThrottleDeceleration); - verifyCommand.verifyConnect.connectID = peer -> connectID; - - enet_peer_queue_outgoing_command (peer, & verifyCommand, NULL, 0, 0); - - return peer; -} - -static int -enet_protocol_handle_send_reliable (ENetHost * host, ENetPeer * peer, const ENetProtocol * command, enet_uint8 ** currentData) -{ - size_t dataLength; - - if (command -> header.channelID >= peer -> channelCount || - (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)) - return -1; - - dataLength = ENET_NET_TO_HOST_16 (command -> sendReliable.dataLength); - * currentData += dataLength; - if (dataLength > host -> maximumPacketSize || - * currentData < host -> receivedData || - * currentData > & host -> receivedData [host -> receivedDataLength]) - return -1; - - if (enet_peer_queue_incoming_command (peer, command, (const enet_uint8 *) command + sizeof (ENetProtocolSendReliable), dataLength, ENET_PACKET_FLAG_RELIABLE, 0) == NULL) - return -1; - - return 0; -} - -static int -enet_protocol_handle_send_unsequenced (ENetHost * host, ENetPeer * peer, const ENetProtocol * command, enet_uint8 ** currentData) -{ - enet_uint32 unsequencedGroup, index; - size_t dataLength; - - if (command -> header.channelID >= peer -> channelCount || - (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)) - return -1; - - dataLength = ENET_NET_TO_HOST_16 (command -> sendUnsequenced.dataLength); - * currentData += dataLength; - if (dataLength > host -> maximumPacketSize || - * currentData < host -> receivedData || - * currentData > & host -> receivedData [host -> receivedDataLength]) - return -1; - - unsequencedGroup = ENET_NET_TO_HOST_16 (command -> sendUnsequenced.unsequencedGroup); - index = unsequencedGroup % ENET_PEER_UNSEQUENCED_WINDOW_SIZE; - - if (unsequencedGroup < peer -> incomingUnsequencedGroup) - unsequencedGroup += 0x10000; - - if (unsequencedGroup >= (enet_uint32) peer -> incomingUnsequencedGroup + ENET_PEER_FREE_UNSEQUENCED_WINDOWS * ENET_PEER_UNSEQUENCED_WINDOW_SIZE) - return 0; - - unsequencedGroup &= 0xFFFF; - - if (unsequencedGroup - index != peer -> incomingUnsequencedGroup) - { - peer -> incomingUnsequencedGroup = unsequencedGroup - index; - - memset (peer -> unsequencedWindow, 0, sizeof (peer -> unsequencedWindow)); - } - else - if (peer -> unsequencedWindow [index / 32] & (1u << (index % 32))) - return 0; - - if (enet_peer_queue_incoming_command (peer, command, (const enet_uint8 *) command + sizeof (ENetProtocolSendUnsequenced), dataLength, ENET_PACKET_FLAG_UNSEQUENCED, 0) == NULL) - return -1; - - peer -> unsequencedWindow [index / 32] |= 1u << (index % 32); - - return 0; -} - -static int -enet_protocol_handle_send_unreliable (ENetHost * host, ENetPeer * peer, const ENetProtocol * command, enet_uint8 ** currentData) -{ - size_t dataLength; - - if (command -> header.channelID >= peer -> channelCount || - (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)) - return -1; - - dataLength = ENET_NET_TO_HOST_16 (command -> sendUnreliable.dataLength); - * currentData += dataLength; - if (dataLength > host -> maximumPacketSize || - * currentData < host -> receivedData || - * currentData > & host -> receivedData [host -> receivedDataLength]) - return -1; - - if (enet_peer_queue_incoming_command (peer, command, (const enet_uint8 *) command + sizeof (ENetProtocolSendUnreliable), dataLength, 0, 0) == NULL) - return -1; - - return 0; -} - -static int -enet_protocol_handle_send_fragment (ENetHost * host, ENetPeer * peer, const ENetProtocol * command, enet_uint8 ** currentData) -{ - enet_uint32 fragmentNumber, - fragmentCount, - fragmentOffset, - fragmentLength, - startSequenceNumber, - totalLength; - ENetChannel * channel; - enet_uint16 startWindow, currentWindow; - ENetListIterator currentCommand; - ENetIncomingCommand * startCommand = NULL; - - if (command -> header.channelID >= peer -> channelCount || - (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)) - return -1; - - fragmentLength = ENET_NET_TO_HOST_16 (command -> sendFragment.dataLength); - * currentData += fragmentLength; - if (fragmentLength <= 0 || - fragmentLength > host -> maximumPacketSize || - * currentData < host -> receivedData || - * currentData > & host -> receivedData [host -> receivedDataLength]) - return -1; - - channel = & peer -> channels [command -> header.channelID]; - startSequenceNumber = ENET_NET_TO_HOST_16 (command -> sendFragment.startSequenceNumber); - startWindow = startSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (startSequenceNumber < channel -> incomingReliableSequenceNumber) - startWindow += ENET_PEER_RELIABLE_WINDOWS; - - if (startWindow < currentWindow || startWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) - return 0; - - fragmentNumber = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentNumber); - fragmentCount = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentCount); - fragmentOffset = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentOffset); - totalLength = ENET_NET_TO_HOST_32 (command -> sendFragment.totalLength); - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT || - fragmentNumber >= fragmentCount || - totalLength > host -> maximumPacketSize || - totalLength < fragmentCount || - fragmentOffset >= totalLength || - fragmentLength > totalLength - fragmentOffset) - return -1; - - for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingReliableCommands)); - currentCommand != enet_list_end (& channel -> incomingReliableCommands); - currentCommand = enet_list_previous (currentCommand)) - { - ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (startSequenceNumber >= channel -> incomingReliableSequenceNumber) - { - if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - continue; - } - else - if (incomingCommand -> reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - break; - - if (incomingCommand -> reliableSequenceNumber <= startSequenceNumber) - { - if (incomingCommand -> reliableSequenceNumber < startSequenceNumber) - break; - - if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_FRAGMENT || - totalLength != incomingCommand -> packet -> dataLength || - fragmentCount != incomingCommand -> fragmentCount) - return -1; - - startCommand = incomingCommand; - break; - } - } - - if (startCommand == NULL) - { - ENetProtocol hostCommand = * command; - - hostCommand.header.reliableSequenceNumber = startSequenceNumber; - - startCommand = enet_peer_queue_incoming_command (peer, & hostCommand, NULL, totalLength, ENET_PACKET_FLAG_RELIABLE, fragmentCount); - if (startCommand == NULL) - return -1; - } - - if ((startCommand -> fragments [fragmentNumber / 32] & (1u << (fragmentNumber % 32))) == 0) - { - -- startCommand -> fragmentsRemaining; - - startCommand -> fragments [fragmentNumber / 32] |= (1u << (fragmentNumber % 32)); - - if (fragmentOffset + fragmentLength > startCommand -> packet -> dataLength) - fragmentLength = startCommand -> packet -> dataLength - fragmentOffset; - - memcpy (startCommand -> packet -> data + fragmentOffset, - (enet_uint8 *) command + sizeof (ENetProtocolSendFragment), - fragmentLength); - - if (startCommand -> fragmentsRemaining <= 0) - enet_peer_dispatch_incoming_reliable_commands (peer, channel, NULL); - } - - return 0; -} - -static int -enet_protocol_handle_send_unreliable_fragment (ENetHost * host, ENetPeer * peer, const ENetProtocol * command, enet_uint8 ** currentData) -{ - enet_uint32 fragmentNumber, - fragmentCount, - fragmentOffset, - fragmentLength, - reliableSequenceNumber, - startSequenceNumber, - totalLength; - enet_uint16 reliableWindow, currentWindow; - ENetChannel * channel; - ENetListIterator currentCommand; - ENetIncomingCommand * startCommand = NULL; - - if (command -> header.channelID >= peer -> channelCount || - (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER)) - return -1; - - fragmentLength = ENET_NET_TO_HOST_16 (command -> sendFragment.dataLength); - * currentData += fragmentLength; - if (fragmentLength <= 0 || - fragmentLength > host -> maximumPacketSize || - * currentData < host -> receivedData || - * currentData > & host -> receivedData [host -> receivedDataLength]) - return -1; - - channel = & peer -> channels [command -> header.channelID]; - reliableSequenceNumber = command -> header.reliableSequenceNumber; - startSequenceNumber = ENET_NET_TO_HOST_16 (command -> sendFragment.startSequenceNumber); - - reliableWindow = reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - currentWindow = channel -> incomingReliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - - if (reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - reliableWindow += ENET_PEER_RELIABLE_WINDOWS; - - if (reliableWindow < currentWindow || reliableWindow >= currentWindow + ENET_PEER_FREE_RELIABLE_WINDOWS - 1) - return 0; - - if (reliableSequenceNumber == channel -> incomingReliableSequenceNumber && - startSequenceNumber <= channel -> incomingUnreliableSequenceNumber) - return 0; - - fragmentNumber = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentNumber); - fragmentCount = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentCount); - fragmentOffset = ENET_NET_TO_HOST_32 (command -> sendFragment.fragmentOffset); - totalLength = ENET_NET_TO_HOST_32 (command -> sendFragment.totalLength); - - if (fragmentCount > ENET_PROTOCOL_MAXIMUM_FRAGMENT_COUNT || - fragmentNumber >= fragmentCount || - totalLength > host -> maximumPacketSize || - totalLength < fragmentCount || - fragmentOffset >= totalLength || - fragmentLength > totalLength - fragmentOffset) - return -1; - - for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingUnreliableCommands)); - currentCommand != enet_list_end (& channel -> incomingUnreliableCommands); - currentCommand = enet_list_previous (currentCommand)) - { - ENetIncomingCommand * incomingCommand = (ENetIncomingCommand *) currentCommand; - - if (reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - { - if (incomingCommand -> reliableSequenceNumber < channel -> incomingReliableSequenceNumber) - continue; - } - else - if (incomingCommand -> reliableSequenceNumber >= channel -> incomingReliableSequenceNumber) - break; - - if (incomingCommand -> reliableSequenceNumber < reliableSequenceNumber) - break; - - if (incomingCommand -> reliableSequenceNumber > reliableSequenceNumber) - continue; - - if (incomingCommand -> unreliableSequenceNumber <= startSequenceNumber) - { - if (incomingCommand -> unreliableSequenceNumber < startSequenceNumber) - break; - - if ((incomingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) != ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT || - totalLength != incomingCommand -> packet -> dataLength || - fragmentCount != incomingCommand -> fragmentCount) - return -1; - - startCommand = incomingCommand; - break; - } - } - - if (startCommand == NULL) - { - startCommand = enet_peer_queue_incoming_command (peer, command, NULL, totalLength, ENET_PACKET_FLAG_UNRELIABLE_FRAGMENT, fragmentCount); - if (startCommand == NULL) - return -1; - } - - if ((startCommand -> fragments [fragmentNumber / 32] & (1u << (fragmentNumber % 32))) == 0) - { - -- startCommand -> fragmentsRemaining; - - startCommand -> fragments [fragmentNumber / 32] |= (1u << (fragmentNumber % 32)); - - if (fragmentOffset + fragmentLength > startCommand -> packet -> dataLength) - fragmentLength = startCommand -> packet -> dataLength - fragmentOffset; - - memcpy (startCommand -> packet -> data + fragmentOffset, - (enet_uint8 *) command + sizeof (ENetProtocolSendFragment), - fragmentLength); - - if (startCommand -> fragmentsRemaining <= 0) - enet_peer_dispatch_incoming_unreliable_commands (peer, channel, NULL); - } - - return 0; -} - -static int -enet_protocol_handle_ping (ENetHost * host, ENetPeer * peer, const ENetProtocol * command) -{ - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - return -1; - - return 0; -} - -static int -enet_protocol_handle_bandwidth_limit (ENetHost * host, ENetPeer * peer, const ENetProtocol * command) -{ - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - return -1; - - if (peer -> incomingBandwidth != 0) - -- host -> bandwidthLimitedPeers; - - peer -> incomingBandwidth = ENET_NET_TO_HOST_32 (command -> bandwidthLimit.incomingBandwidth); - peer -> outgoingBandwidth = ENET_NET_TO_HOST_32 (command -> bandwidthLimit.outgoingBandwidth); - - if (peer -> incomingBandwidth != 0) - ++ host -> bandwidthLimitedPeers; - - if (peer -> incomingBandwidth == 0 && host -> outgoingBandwidth == 0) - peer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - else - if (peer -> incomingBandwidth == 0 || host -> outgoingBandwidth == 0) - peer -> windowSize = (ENET_MAX (peer -> incomingBandwidth, host -> outgoingBandwidth) / - ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - else - peer -> windowSize = (ENET_MIN (peer -> incomingBandwidth, host -> outgoingBandwidth) / - ENET_PEER_WINDOW_SIZE_SCALE) * ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - - if (peer -> windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) - peer -> windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - else - if (peer -> windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) - peer -> windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - - return 0; -} - -static int -enet_protocol_handle_throttle_configure (ENetHost * host, ENetPeer * peer, const ENetProtocol * command) -{ - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - return -1; - - peer -> packetThrottleInterval = ENET_NET_TO_HOST_32 (command -> throttleConfigure.packetThrottleInterval); - peer -> packetThrottleAcceleration = ENET_NET_TO_HOST_32 (command -> throttleConfigure.packetThrottleAcceleration); - peer -> packetThrottleDeceleration = ENET_NET_TO_HOST_32 (command -> throttleConfigure.packetThrottleDeceleration); - - return 0; -} - -static int -enet_protocol_handle_disconnect (ENetHost * host, ENetPeer * peer, const ENetProtocol * command) -{ - if (peer -> state == ENET_PEER_STATE_DISCONNECTED || peer -> state == ENET_PEER_STATE_ZOMBIE || peer -> state == ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT) - return 0; - - enet_peer_reset_queues (peer); - - if (peer -> state == ENET_PEER_STATE_CONNECTION_SUCCEEDED || peer -> state == ENET_PEER_STATE_DISCONNECTING || peer -> state == ENET_PEER_STATE_CONNECTING) - enet_protocol_dispatch_state (host, peer, ENET_PEER_STATE_ZOMBIE); - else - if (peer -> state != ENET_PEER_STATE_CONNECTED && peer -> state != ENET_PEER_STATE_DISCONNECT_LATER) - { - if (peer -> state == ENET_PEER_STATE_CONNECTION_PENDING) host -> recalculateBandwidthLimits = 1; - - enet_peer_reset (peer); - } - else - if (command -> header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) - enet_protocol_change_state (host, peer, ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT); - else - enet_protocol_dispatch_state (host, peer, ENET_PEER_STATE_ZOMBIE); - - if (peer -> state != ENET_PEER_STATE_DISCONNECTED) - peer -> eventData = ENET_NET_TO_HOST_32 (command -> disconnect.data); - - return 0; -} - -static int -enet_protocol_handle_acknowledge (ENetHost * host, ENetEvent * event, ENetPeer * peer, const ENetProtocol * command) -{ - enet_uint32 roundTripTime, - receivedSentTime, - receivedReliableSequenceNumber; - ENetProtocolCommand commandNumber; - - if (peer -> state == ENET_PEER_STATE_DISCONNECTED || peer -> state == ENET_PEER_STATE_ZOMBIE) - return 0; - - receivedSentTime = ENET_NET_TO_HOST_16 (command -> acknowledge.receivedSentTime); - receivedSentTime |= host -> serviceTime & 0xFFFF0000; - if ((receivedSentTime & 0x8000) > (host -> serviceTime & 0x8000)) - receivedSentTime -= 0x10000; - - if (ENET_TIME_LESS (host -> serviceTime, receivedSentTime)) - return 0; - - roundTripTime = ENET_TIME_DIFFERENCE (host -> serviceTime, receivedSentTime); - roundTripTime = ENET_MAX (roundTripTime, 1); - - if (peer -> lastReceiveTime > 0) - { - enet_peer_throttle (peer, roundTripTime); - - peer -> roundTripTimeVariance -= peer -> roundTripTimeVariance / 4; - - if (roundTripTime >= peer -> roundTripTime) - { - enet_uint32 diff = roundTripTime - peer -> roundTripTime; - peer -> roundTripTimeVariance += diff / 4; - peer -> roundTripTime += diff / 8; - } - else - { - enet_uint32 diff = peer -> roundTripTime - roundTripTime; - peer -> roundTripTimeVariance += diff / 4; - peer -> roundTripTime -= diff / 8; - } - } - else - { - peer -> roundTripTime = roundTripTime; - peer -> roundTripTimeVariance = (roundTripTime + 1) / 2; - } - - if (peer -> roundTripTime < peer -> lowestRoundTripTime) - peer -> lowestRoundTripTime = peer -> roundTripTime; - - if (peer -> roundTripTimeVariance > peer -> highestRoundTripTimeVariance) - peer -> highestRoundTripTimeVariance = peer -> roundTripTimeVariance; - - if (peer -> packetThrottleEpoch == 0 || - ENET_TIME_DIFFERENCE (host -> serviceTime, peer -> packetThrottleEpoch) >= peer -> packetThrottleInterval) - { - peer -> lastRoundTripTime = peer -> lowestRoundTripTime; - peer -> lastRoundTripTimeVariance = ENET_MAX (peer -> highestRoundTripTimeVariance, 1); - peer -> lowestRoundTripTime = peer -> roundTripTime; - peer -> highestRoundTripTimeVariance = peer -> roundTripTimeVariance; - peer -> packetThrottleEpoch = host -> serviceTime; - } - - peer -> lastReceiveTime = ENET_MAX (host -> serviceTime, 1); - peer -> earliestTimeout = 0; - - receivedReliableSequenceNumber = ENET_NET_TO_HOST_16 (command -> acknowledge.receivedReliableSequenceNumber); - - commandNumber = enet_protocol_remove_sent_reliable_command (peer, receivedReliableSequenceNumber, command -> header.channelID); - - switch (peer -> state) - { - case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT: - if (commandNumber != ENET_PROTOCOL_COMMAND_VERIFY_CONNECT) - return -1; - - enet_protocol_notify_connect (host, peer, event); - break; - - case ENET_PEER_STATE_DISCONNECTING: - if (commandNumber != ENET_PROTOCOL_COMMAND_DISCONNECT) - return -1; - - enet_protocol_notify_disconnect (host, peer, event); - break; - - case ENET_PEER_STATE_DISCONNECT_LATER: - if (! enet_peer_has_outgoing_commands (peer)) - enet_peer_disconnect (peer, peer -> eventData); - break; - - default: - break; - } - - return 0; -} - -static int -enet_protocol_handle_verify_connect (ENetHost * host, ENetEvent * event, ENetPeer * peer, const ENetProtocol * command) -{ - enet_uint32 mtu, windowSize; - size_t channelCount; - - if (peer -> state != ENET_PEER_STATE_CONNECTING) - return 0; - - channelCount = ENET_NET_TO_HOST_32 (command -> verifyConnect.channelCount); - - if (channelCount < ENET_PROTOCOL_MINIMUM_CHANNEL_COUNT || channelCount > ENET_PROTOCOL_MAXIMUM_CHANNEL_COUNT || - ENET_NET_TO_HOST_32 (command -> verifyConnect.packetThrottleInterval) != peer -> packetThrottleInterval || - ENET_NET_TO_HOST_32 (command -> verifyConnect.packetThrottleAcceleration) != peer -> packetThrottleAcceleration || - ENET_NET_TO_HOST_32 (command -> verifyConnect.packetThrottleDeceleration) != peer -> packetThrottleDeceleration || - command -> verifyConnect.connectID != peer -> connectID) - { - peer -> eventData = 0; - - enet_protocol_dispatch_state (host, peer, ENET_PEER_STATE_ZOMBIE); - - return -1; - } - - enet_protocol_remove_sent_reliable_command (peer, 1, 0xFF); - - if (channelCount < peer -> channelCount) - peer -> channelCount = channelCount; - - peer -> outgoingPeerID = ENET_NET_TO_HOST_16 (command -> verifyConnect.outgoingPeerID); - peer -> incomingSessionID = command -> verifyConnect.incomingSessionID; - peer -> outgoingSessionID = command -> verifyConnect.outgoingSessionID; - - mtu = ENET_NET_TO_HOST_32 (command -> verifyConnect.mtu); - - if (mtu < ENET_PROTOCOL_MINIMUM_MTU) - mtu = ENET_PROTOCOL_MINIMUM_MTU; - else - if (mtu > ENET_PROTOCOL_MAXIMUM_MTU) - mtu = ENET_PROTOCOL_MAXIMUM_MTU; - - if (mtu < peer -> mtu) - peer -> mtu = mtu; - - windowSize = ENET_NET_TO_HOST_32 (command -> verifyConnect.windowSize); - - if (windowSize < ENET_PROTOCOL_MINIMUM_WINDOW_SIZE) - windowSize = ENET_PROTOCOL_MINIMUM_WINDOW_SIZE; - - if (windowSize > ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE) - windowSize = ENET_PROTOCOL_MAXIMUM_WINDOW_SIZE; - - if (windowSize < peer -> windowSize) - peer -> windowSize = windowSize; - - peer -> incomingBandwidth = ENET_NET_TO_HOST_32 (command -> verifyConnect.incomingBandwidth); - peer -> outgoingBandwidth = ENET_NET_TO_HOST_32 (command -> verifyConnect.outgoingBandwidth); - - enet_protocol_notify_connect (host, peer, event); - return 0; -} - -static int -enet_protocol_handle_incoming_commands (ENetHost * host, ENetEvent * event) -{ - ENetProtocolHeader * header; - ENetProtocol * command; - ENetPeer * peer; - enet_uint8 * currentData; - size_t headerSize; - enet_uint16 peerID, flags; - enet_uint8 sessionID; - - if (host -> receivedDataLength < (size_t) & ((ENetProtocolHeader *) 0) -> sentTime) - return 0; - - header = (ENetProtocolHeader *) host -> receivedData; - - peerID = ENET_NET_TO_HOST_16 (header -> peerID); - sessionID = (peerID & ENET_PROTOCOL_HEADER_SESSION_MASK) >> ENET_PROTOCOL_HEADER_SESSION_SHIFT; - flags = peerID & ENET_PROTOCOL_HEADER_FLAG_MASK; - peerID &= ~ (ENET_PROTOCOL_HEADER_FLAG_MASK | ENET_PROTOCOL_HEADER_SESSION_MASK); - - headerSize = (flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME ? sizeof (ENetProtocolHeader) : (size_t) & ((ENetProtocolHeader *) 0) -> sentTime); - if (host -> checksum != NULL) - headerSize += sizeof (enet_uint32); - - if (peerID == ENET_PROTOCOL_MAXIMUM_PEER_ID) - peer = NULL; - else - if (peerID >= host -> peerCount) - return 0; - else - { - peer = & host -> peers [peerID]; - - if (peer -> state == ENET_PEER_STATE_DISCONNECTED || - peer -> state == ENET_PEER_STATE_ZOMBIE || - ((host -> receivedAddress.host != peer -> address.host || - host -> receivedAddress.port != peer -> address.port) && - peer -> address.host != ENET_HOST_BROADCAST) || - (peer -> outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID && - sessionID != peer -> incomingSessionID)) - return 0; - } - - if (flags & ENET_PROTOCOL_HEADER_FLAG_COMPRESSED) - { - size_t originalSize; - if (host -> compressor.context == NULL || host -> compressor.decompress == NULL) - return 0; - - originalSize = host -> compressor.decompress (host -> compressor.context, - host -> receivedData + headerSize, - host -> receivedDataLength - headerSize, - host -> packetData [1] + headerSize, - sizeof (host -> packetData [1]) - headerSize); - if (originalSize <= 0 || originalSize > sizeof (host -> packetData [1]) - headerSize) - return 0; - - memcpy (host -> packetData [1], header, headerSize); - host -> receivedData = host -> packetData [1]; - host -> receivedDataLength = headerSize + originalSize; - } - - if (host -> checksum != NULL) - { - enet_uint32 * checksum = (enet_uint32 *) & host -> receivedData [headerSize - sizeof (enet_uint32)]; - enet_uint32 desiredChecksum, newChecksum; - ENetBuffer buffer; - /* Checksum may be an unaligned pointer, use memcpy to avoid undefined behaviour. */ - memcpy (& desiredChecksum, checksum, sizeof (enet_uint32)); - - newChecksum = peer != NULL ? peer -> connectID : 0; - memcpy (checksum, & newChecksum, sizeof (enet_uint32)); - - buffer.data = host -> receivedData; - buffer.dataLength = host -> receivedDataLength; - - if (host -> checksum (& buffer, 1) != desiredChecksum) - return 0; - } - - if (peer != NULL) - { - peer -> address.host = host -> receivedAddress.host; - peer -> address.port = host -> receivedAddress.port; - peer -> incomingDataTotal += host -> receivedDataLength; - } - - currentData = host -> receivedData + headerSize; - - while (currentData < & host -> receivedData [host -> receivedDataLength]) - { - enet_uint8 commandNumber; - size_t commandSize; - - command = (ENetProtocol *) currentData; - - if (currentData + sizeof (ENetProtocolCommandHeader) > & host -> receivedData [host -> receivedDataLength]) - break; - - commandNumber = command -> header.command & ENET_PROTOCOL_COMMAND_MASK; - if (commandNumber >= ENET_PROTOCOL_COMMAND_COUNT) - break; - - commandSize = commandSizes [commandNumber]; - if (commandSize == 0 || currentData + commandSize > & host -> receivedData [host -> receivedDataLength]) - break; - - currentData += commandSize; - - if (peer == NULL && commandNumber != ENET_PROTOCOL_COMMAND_CONNECT) - break; - - command -> header.reliableSequenceNumber = ENET_NET_TO_HOST_16 (command -> header.reliableSequenceNumber); - - switch (commandNumber) - { - case ENET_PROTOCOL_COMMAND_ACKNOWLEDGE: - if (enet_protocol_handle_acknowledge (host, event, peer, command)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_CONNECT: - if (peer != NULL) - goto commandError; - peer = enet_protocol_handle_connect (host, header, command); - if (peer == NULL) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_VERIFY_CONNECT: - if (enet_protocol_handle_verify_connect (host, event, peer, command)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_DISCONNECT: - if (enet_protocol_handle_disconnect (host, peer, command)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_PING: - if (enet_protocol_handle_ping (host, peer, command)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_SEND_RELIABLE: - if (enet_protocol_handle_send_reliable (host, peer, command, & currentData)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE: - if (enet_protocol_handle_send_unreliable (host, peer, command, & currentData)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNSEQUENCED: - if (enet_protocol_handle_send_unsequenced (host, peer, command, & currentData)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_SEND_FRAGMENT: - if (enet_protocol_handle_send_fragment (host, peer, command, & currentData)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_BANDWIDTH_LIMIT: - if (enet_protocol_handle_bandwidth_limit (host, peer, command)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_THROTTLE_CONFIGURE: - if (enet_protocol_handle_throttle_configure (host, peer, command)) - goto commandError; - break; - - case ENET_PROTOCOL_COMMAND_SEND_UNRELIABLE_FRAGMENT: - if (enet_protocol_handle_send_unreliable_fragment (host, peer, command, & currentData)) - goto commandError; - break; - - default: - goto commandError; - } - - if (peer != NULL && - (command -> header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) != 0) - { - enet_uint16 sentTime; - - if (! (flags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME)) - break; - - sentTime = ENET_NET_TO_HOST_16 (header -> sentTime); - - switch (peer -> state) - { - case ENET_PEER_STATE_DISCONNECTING: - case ENET_PEER_STATE_ACKNOWLEDGING_CONNECT: - case ENET_PEER_STATE_DISCONNECTED: - case ENET_PEER_STATE_ZOMBIE: - break; - - case ENET_PEER_STATE_ACKNOWLEDGING_DISCONNECT: - if ((command -> header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) - enet_peer_queue_acknowledgement (peer, command, sentTime); - break; - - default: - enet_peer_queue_acknowledgement (peer, command, sentTime); - break; - } - } - } - -commandError: - if (event != NULL && event -> type != ENET_EVENT_TYPE_NONE) - return 1; - - return 0; -} - -static int -enet_protocol_receive_incoming_commands (ENetHost * host, ENetEvent * event) -{ - int packets; - - for (packets = 0; packets < 256; ++ packets) - { - int receivedLength; - ENetBuffer buffer; - - buffer.data = host -> packetData [0]; - buffer.dataLength = sizeof (host -> packetData [0]); - - receivedLength = enet_socket_receive (host -> socket, - & host -> receivedAddress, - & buffer, - 1); - - if (receivedLength == -2) - continue; - - if (receivedLength < 0) - return -1; - - if (receivedLength == 0) - return 0; - - host -> receivedData = host -> packetData [0]; - host -> receivedDataLength = receivedLength; - - host -> totalReceivedData += receivedLength; - host -> totalReceivedPackets ++; - - if (host -> intercept != NULL) - { - switch (host -> intercept (host, event)) - { - case 1: - if (event != NULL && event -> type != ENET_EVENT_TYPE_NONE) - return 1; - - continue; - - case -1: - return -1; - - default: - break; - } - } - - switch (enet_protocol_handle_incoming_commands (host, event)) - { - case 1: - return 1; - - case -1: - return -1; - - default: - break; - } - } - - return 0; -} - -static void -enet_protocol_send_acknowledgements (ENetHost * host, ENetPeer * peer) -{ - ENetProtocol * command = & host -> commands [host -> commandCount]; - ENetBuffer * buffer = & host -> buffers [host -> bufferCount]; - ENetAcknowledgement * acknowledgement; - ENetListIterator currentAcknowledgement; - enet_uint16 reliableSequenceNumber; - - currentAcknowledgement = enet_list_begin (& peer -> acknowledgements); - - while (currentAcknowledgement != enet_list_end (& peer -> acknowledgements)) - { - if (command >= & host -> commands [sizeof (host -> commands) / sizeof (ENetProtocol)] || - buffer >= & host -> buffers [sizeof (host -> buffers) / sizeof (ENetBuffer)] || - peer -> mtu - host -> packetSize < sizeof (ENetProtocolAcknowledge)) - { - peer -> flags |= ENET_PEER_FLAG_CONTINUE_SENDING; - - break; - } - - acknowledgement = (ENetAcknowledgement *) currentAcknowledgement; - - currentAcknowledgement = enet_list_next (currentAcknowledgement); - - buffer -> data = command; - buffer -> dataLength = sizeof (ENetProtocolAcknowledge); - - host -> packetSize += buffer -> dataLength; - - reliableSequenceNumber = ENET_HOST_TO_NET_16 (acknowledgement -> command.header.reliableSequenceNumber); - - command -> header.command = ENET_PROTOCOL_COMMAND_ACKNOWLEDGE; - command -> header.channelID = acknowledgement -> command.header.channelID; - command -> header.reliableSequenceNumber = reliableSequenceNumber; - command -> acknowledge.receivedReliableSequenceNumber = reliableSequenceNumber; - command -> acknowledge.receivedSentTime = ENET_HOST_TO_NET_16 (acknowledgement -> sentTime); - - if ((acknowledgement -> command.header.command & ENET_PROTOCOL_COMMAND_MASK) == ENET_PROTOCOL_COMMAND_DISCONNECT) - enet_protocol_dispatch_state (host, peer, ENET_PEER_STATE_ZOMBIE); - - enet_list_remove (& acknowledgement -> acknowledgementList); - enet_free (acknowledgement); - - ++ command; - ++ buffer; - } - - host -> commandCount = command - host -> commands; - host -> bufferCount = buffer - host -> buffers; -} - -static int -enet_protocol_check_timeouts (ENetHost * host, ENetPeer * peer, ENetEvent * event) -{ - ENetOutgoingCommand * outgoingCommand; - ENetListIterator currentCommand, insertPosition, insertSendReliablePosition; - - currentCommand = enet_list_begin (& peer -> sentReliableCommands); - insertPosition = enet_list_begin (& peer -> outgoingCommands); - insertSendReliablePosition = enet_list_begin (& peer -> outgoingSendReliableCommands); - - while (currentCommand != enet_list_end (& peer -> sentReliableCommands)) - { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - currentCommand = enet_list_next (currentCommand); - - if (ENET_TIME_DIFFERENCE (host -> serviceTime, outgoingCommand -> sentTime) < outgoingCommand -> roundTripTimeout) - continue; - - if (peer -> earliestTimeout == 0 || - ENET_TIME_LESS (outgoingCommand -> sentTime, peer -> earliestTimeout)) - peer -> earliestTimeout = outgoingCommand -> sentTime; - - if (peer -> earliestTimeout != 0 && - (ENET_TIME_DIFFERENCE (host -> serviceTime, peer -> earliestTimeout) >= peer -> timeoutMaximum || - ((1u << (outgoingCommand -> sendAttempts - 1)) >= peer -> timeoutLimit && - ENET_TIME_DIFFERENCE (host -> serviceTime, peer -> earliestTimeout) >= peer -> timeoutMinimum))) - { - enet_protocol_notify_disconnect (host, peer, event); - - return 1; - } - - ++ peer -> packetsLost; - - outgoingCommand -> roundTripTimeout *= 2; - - if (outgoingCommand -> packet != NULL) - { - peer -> reliableDataInTransit -= outgoingCommand -> fragmentLength; - - enet_list_insert (insertSendReliablePosition, enet_list_remove (& outgoingCommand -> outgoingCommandList)); - } - else - enet_list_insert (insertPosition, enet_list_remove (& outgoingCommand -> outgoingCommandList)); - - if (currentCommand == enet_list_begin (& peer -> sentReliableCommands) && - ! enet_list_empty (& peer -> sentReliableCommands)) - { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - peer -> nextTimeout = outgoingCommand -> sentTime + outgoingCommand -> roundTripTimeout; - } - } - - return 0; -} - -static int -enet_protocol_check_outgoing_commands (ENetHost * host, ENetPeer * peer, ENetList * sentUnreliableCommands) -{ - ENetProtocol * command = & host -> commands [host -> commandCount]; - ENetBuffer * buffer = & host -> buffers [host -> bufferCount]; - ENetOutgoingCommand * outgoingCommand; - ENetListIterator currentCommand, currentSendReliableCommand; - ENetChannel *channel = NULL; - enet_uint16 reliableWindow = 0; - size_t commandSize; - int windowWrap = 0, canPing = 1; - - currentCommand = enet_list_begin (& peer -> outgoingCommands); - currentSendReliableCommand = enet_list_begin (& peer -> outgoingSendReliableCommands); - - for (;;) - { - if (currentCommand != enet_list_end (& peer -> outgoingCommands)) - { - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - - if (currentSendReliableCommand != enet_list_end (& peer -> outgoingSendReliableCommands) && - ENET_TIME_LESS (((ENetOutgoingCommand *) currentSendReliableCommand) -> queueTime, outgoingCommand -> queueTime)) - goto useSendReliableCommand; - - currentCommand = enet_list_next (currentCommand); - } - else - if (currentSendReliableCommand != enet_list_end (& peer -> outgoingSendReliableCommands)) - { - useSendReliableCommand: - outgoingCommand = (ENetOutgoingCommand *) currentSendReliableCommand; - currentSendReliableCommand = enet_list_next (currentSendReliableCommand); - } - else - break; - - if (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) - { - channel = outgoingCommand -> command.header.channelID < peer -> channelCount ? & peer -> channels [outgoingCommand -> command.header.channelID] : NULL; - reliableWindow = outgoingCommand -> reliableSequenceNumber / ENET_PEER_RELIABLE_WINDOW_SIZE; - if (channel != NULL) - { - if (windowWrap) - continue; - else - if (outgoingCommand -> sendAttempts < 1 && - ! (outgoingCommand -> reliableSequenceNumber % ENET_PEER_RELIABLE_WINDOW_SIZE) && - (channel -> reliableWindows [(reliableWindow + ENET_PEER_RELIABLE_WINDOWS - 1) % ENET_PEER_RELIABLE_WINDOWS] >= ENET_PEER_RELIABLE_WINDOW_SIZE || - channel -> usedReliableWindows & ((((1u << (ENET_PEER_FREE_RELIABLE_WINDOWS + 2)) - 1) << reliableWindow) | - (((1u << (ENET_PEER_FREE_RELIABLE_WINDOWS + 2)) - 1) >> (ENET_PEER_RELIABLE_WINDOWS - reliableWindow))))) - { - windowWrap = 1; - currentSendReliableCommand = enet_list_end (& peer -> outgoingSendReliableCommands); - - continue; - } - } - - if (outgoingCommand -> packet != NULL) - { - enet_uint32 windowSize = (peer -> packetThrottle * peer -> windowSize) / ENET_PEER_PACKET_THROTTLE_SCALE; - - if (peer -> reliableDataInTransit + outgoingCommand -> fragmentLength > ENET_MAX (windowSize, peer -> mtu)) - { - currentSendReliableCommand = enet_list_end (& peer -> outgoingSendReliableCommands); - - continue; - } - } - - canPing = 0; - } - - commandSize = commandSizes [outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_MASK]; - if (command >= & host -> commands [sizeof (host -> commands) / sizeof (ENetProtocol)] || - buffer + 1 >= & host -> buffers [sizeof (host -> buffers) / sizeof (ENetBuffer)] || - peer -> mtu - host -> packetSize < commandSize || - (outgoingCommand -> packet != NULL && - (enet_uint16) (peer -> mtu - host -> packetSize) < (enet_uint16) (commandSize + outgoingCommand -> fragmentLength))) - { - peer -> flags |= ENET_PEER_FLAG_CONTINUE_SENDING; - - break; - } - - if (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE) - { - if (channel != NULL && outgoingCommand -> sendAttempts < 1) - { - channel -> usedReliableWindows |= 1u << reliableWindow; - ++ channel -> reliableWindows [reliableWindow]; - } - - ++ outgoingCommand -> sendAttempts; - - if (outgoingCommand -> roundTripTimeout == 0) - outgoingCommand -> roundTripTimeout = peer -> roundTripTime + 4 * peer -> roundTripTimeVariance; - - if (enet_list_empty (& peer -> sentReliableCommands)) - peer -> nextTimeout = host -> serviceTime + outgoingCommand -> roundTripTimeout; - - enet_list_insert (enet_list_end (& peer -> sentReliableCommands), - enet_list_remove (& outgoingCommand -> outgoingCommandList)); - - outgoingCommand -> sentTime = host -> serviceTime; - - host -> headerFlags |= ENET_PROTOCOL_HEADER_FLAG_SENT_TIME; - - peer -> reliableDataInTransit += outgoingCommand -> fragmentLength; - } - else - { - if (outgoingCommand -> packet != NULL && outgoingCommand -> fragmentOffset == 0) - { - peer -> packetThrottleCounter += ENET_PEER_PACKET_THROTTLE_COUNTER; - peer -> packetThrottleCounter %= ENET_PEER_PACKET_THROTTLE_SCALE; - - if (peer -> packetThrottleCounter > peer -> packetThrottle) - { - enet_uint16 reliableSequenceNumber = outgoingCommand -> reliableSequenceNumber, - unreliableSequenceNumber = outgoingCommand -> unreliableSequenceNumber; - for (;;) - { - -- outgoingCommand -> packet -> referenceCount; - - if (outgoingCommand -> packet -> referenceCount == 0) - enet_packet_destroy (outgoingCommand -> packet); - - enet_list_remove (& outgoingCommand -> outgoingCommandList); - enet_free (outgoingCommand); - - if (currentCommand == enet_list_end (& peer -> outgoingCommands)) - break; - - outgoingCommand = (ENetOutgoingCommand *) currentCommand; - if (outgoingCommand -> reliableSequenceNumber != reliableSequenceNumber || - outgoingCommand -> unreliableSequenceNumber != unreliableSequenceNumber) - break; - - currentCommand = enet_list_next (currentCommand); - } - - continue; - } - } - - enet_list_remove (& outgoingCommand -> outgoingCommandList); - - if (outgoingCommand -> packet != NULL) - enet_list_insert (enet_list_end (sentUnreliableCommands), outgoingCommand); - } - - buffer -> data = command; - buffer -> dataLength = commandSize; - - host -> packetSize += buffer -> dataLength; - - * command = outgoingCommand -> command; - - if (outgoingCommand -> packet != NULL) - { - ++ buffer; - - buffer -> data = outgoingCommand -> packet -> data + outgoingCommand -> fragmentOffset; - buffer -> dataLength = outgoingCommand -> fragmentLength; - - host -> packetSize += outgoingCommand -> fragmentLength; - } - else - if (! (outgoingCommand -> command.header.command & ENET_PROTOCOL_COMMAND_FLAG_ACKNOWLEDGE)) - enet_free (outgoingCommand); - - ++ peer -> packetsSent; - - ++ command; - ++ buffer; - } - - host -> commandCount = command - host -> commands; - host -> bufferCount = buffer - host -> buffers; - - if (peer -> state == ENET_PEER_STATE_DISCONNECT_LATER && - ! enet_peer_has_outgoing_commands (peer) && - enet_list_empty (sentUnreliableCommands)) - enet_peer_disconnect (peer, peer -> eventData); - - return canPing; -} - -static int -enet_protocol_send_outgoing_commands (ENetHost * host, ENetEvent * event, int checkForTimeouts) -{ - enet_uint8 headerData [sizeof (ENetProtocolHeader) + sizeof (enet_uint32)]; - ENetProtocolHeader * header = (ENetProtocolHeader *) headerData; - int sentLength = 0; - size_t shouldCompress = 0; - ENetList sentUnreliableCommands; - - enet_list_clear (& sentUnreliableCommands); - - for (int sendPass = 0, continueSending = 0; sendPass <= continueSending; ++ sendPass) - for (ENetPeer * currentPeer = host -> peers; - currentPeer < & host -> peers [host -> peerCount]; - ++ currentPeer) - { - if (currentPeer -> state == ENET_PEER_STATE_DISCONNECTED || - currentPeer -> state == ENET_PEER_STATE_ZOMBIE || - (sendPass > 0 && ! (currentPeer -> flags & ENET_PEER_FLAG_CONTINUE_SENDING))) - continue; - - currentPeer -> flags &= ~ ENET_PEER_FLAG_CONTINUE_SENDING; - - host -> headerFlags = 0; - host -> commandCount = 0; - host -> bufferCount = 1; - host -> packetSize = sizeof (ENetProtocolHeader); - - if (! enet_list_empty (& currentPeer -> acknowledgements)) - enet_protocol_send_acknowledgements (host, currentPeer); - - if (checkForTimeouts != 0 && - ! enet_list_empty (& currentPeer -> sentReliableCommands) && - ENET_TIME_GREATER_EQUAL (host -> serviceTime, currentPeer -> nextTimeout) && - enet_protocol_check_timeouts (host, currentPeer, event) == 1) - { - if (event != NULL && event -> type != ENET_EVENT_TYPE_NONE) - return 1; - else - goto nextPeer; - } - - if (((enet_list_empty (& currentPeer -> outgoingCommands) && - enet_list_empty (& currentPeer -> outgoingSendReliableCommands)) || - enet_protocol_check_outgoing_commands (host, currentPeer, & sentUnreliableCommands)) && - enet_list_empty (& currentPeer -> sentReliableCommands) && - ENET_TIME_DIFFERENCE (host -> serviceTime, currentPeer -> lastReceiveTime) >= currentPeer -> pingInterval && - currentPeer -> mtu - host -> packetSize >= sizeof (ENetProtocolPing)) - { - enet_peer_ping (currentPeer); - enet_protocol_check_outgoing_commands (host, currentPeer, & sentUnreliableCommands); - } - - if (host -> commandCount == 0) - goto nextPeer; - - if (currentPeer -> packetLossEpoch == 0) - currentPeer -> packetLossEpoch = host -> serviceTime; - else - if (ENET_TIME_DIFFERENCE (host -> serviceTime, currentPeer -> packetLossEpoch) >= ENET_PEER_PACKET_LOSS_INTERVAL && - currentPeer -> packetsSent > 0) - { - enet_uint32 packetLoss = currentPeer -> packetsLost * ENET_PEER_PACKET_LOSS_SCALE / currentPeer -> packetsSent; - -#ifdef ENET_DEBUG - printf ("peer %u: %f%%+-%f%% packet loss, %u+-%u ms round trip time, %f%% throttle, %u outgoing, %u/%u incoming\n", currentPeer -> incomingPeerID, currentPeer -> packetLoss / (float) ENET_PEER_PACKET_LOSS_SCALE, currentPeer -> packetLossVariance / (float) ENET_PEER_PACKET_LOSS_SCALE, currentPeer -> roundTripTime, currentPeer -> roundTripTimeVariance, currentPeer -> packetThrottle / (float) ENET_PEER_PACKET_THROTTLE_SCALE, enet_list_size (& currentPeer -> outgoingCommands) + enet_list_size (& currentPeer -> outgoingSendReliableCommands), currentPeer -> channels != NULL ? enet_list_size (& currentPeer -> channels -> incomingReliableCommands) : 0, currentPeer -> channels != NULL ? enet_list_size (& currentPeer -> channels -> incomingUnreliableCommands) : 0); -#endif - - currentPeer -> packetLossVariance = (currentPeer -> packetLossVariance * 3 + ENET_DIFFERENCE (packetLoss, currentPeer -> packetLoss)) / 4; - currentPeer -> packetLoss = (currentPeer -> packetLoss * 7 + packetLoss) / 8; - - currentPeer -> packetLossEpoch = host -> serviceTime; - currentPeer -> packetsSent = 0; - currentPeer -> packetsLost = 0; - } - - host -> buffers -> data = headerData; - if (host -> headerFlags & ENET_PROTOCOL_HEADER_FLAG_SENT_TIME) - { - header -> sentTime = ENET_HOST_TO_NET_16 (host -> serviceTime & 0xFFFF); - - host -> buffers -> dataLength = sizeof (ENetProtocolHeader); - } - else - host -> buffers -> dataLength = (size_t) & ((ENetProtocolHeader *) 0) -> sentTime; - - shouldCompress = 0; - if (host -> compressor.context != NULL && host -> compressor.compress != NULL) - { - size_t originalSize = host -> packetSize - sizeof(ENetProtocolHeader), - compressedSize = host -> compressor.compress (host -> compressor.context, - & host -> buffers [1], host -> bufferCount - 1, - originalSize, - host -> packetData [1], - originalSize); - if (compressedSize > 0 && compressedSize < originalSize) - { - host -> headerFlags |= ENET_PROTOCOL_HEADER_FLAG_COMPRESSED; - shouldCompress = compressedSize; -#ifdef ENET_DEBUG_COMPRESS - printf ("peer %u: compressed %u -> %u (%u%%)\n", currentPeer -> incomingPeerID, originalSize, compressedSize, (compressedSize * 100) / originalSize); -#endif - } - } - - if (currentPeer -> outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID) - host -> headerFlags |= currentPeer -> outgoingSessionID << ENET_PROTOCOL_HEADER_SESSION_SHIFT; - header -> peerID = ENET_HOST_TO_NET_16 (currentPeer -> outgoingPeerID | host -> headerFlags); - if (host -> checksum != NULL) - { - enet_uint32 * checksum = (enet_uint32 *) & headerData [host -> buffers -> dataLength]; - enet_uint32 newChecksum = currentPeer -> outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID ? currentPeer -> connectID : 0; - /* Checksum may be unaligned, use memcpy to avoid undefined behaviour. */ - memcpy(checksum, & newChecksum, sizeof (enet_uint32)); - host -> buffers -> dataLength += sizeof (enet_uint32); - newChecksum = host -> checksum (host -> buffers, host -> bufferCount); - memcpy(checksum, & newChecksum, sizeof (enet_uint32)); - } - - if (shouldCompress > 0) - { - host -> buffers [1].data = host -> packetData [1]; - host -> buffers [1].dataLength = shouldCompress; - host -> bufferCount = 2; - } - - currentPeer -> lastSendTime = host -> serviceTime; - - sentLength = enet_socket_send (host -> socket, & currentPeer -> address, host -> buffers, host -> bufferCount); - - enet_protocol_remove_sent_unreliable_commands (currentPeer, & sentUnreliableCommands); - - if (sentLength < 0) - return -1; - - host -> totalSentData += sentLength; - host -> totalSentPackets ++; - - nextPeer: - if (currentPeer -> flags & ENET_PEER_FLAG_CONTINUE_SENDING) - continueSending = sendPass + 1; - } - - return 0; -} - -/** Sends any queued packets on the host specified to its designated peers. - - @param host host to flush - @remarks this function need only be used in circumstances where one wishes to send queued packets earlier than in a call to enet_host_service(). - @ingroup host -*/ -void -enet_host_flush (ENetHost * host) -{ - host -> serviceTime = enet_time_get (); - - enet_protocol_send_outgoing_commands (host, NULL, 0); -} - -/** Checks for any queued events on the host and dispatches one if available. - - @param host host to check for events - @param event an event structure where event details will be placed if available - @retval > 0 if an event was dispatched - @retval 0 if no events are available - @retval < 0 on failure - @ingroup host -*/ -int -enet_host_check_events (ENetHost * host, ENetEvent * event) -{ - if (event == NULL) return -1; - - event -> type = ENET_EVENT_TYPE_NONE; - event -> peer = NULL; - event -> packet = NULL; - - return enet_protocol_dispatch_incoming_commands (host, event); -} - -/** Waits for events on the host specified and shuttles packets between - the host and its peers. - - @param host host to service - @param event an event structure where event details will be placed if one occurs - if event == NULL then no events will be delivered - @param timeout number of milliseconds that ENet should wait for events - @retval > 0 if an event occurred within the specified time limit - @retval 0 if no event occurred - @retval < 0 on failure - @remarks enet_host_service should be called fairly regularly for adequate performance - @ingroup host -*/ -int -enet_host_service (ENetHost * host, ENetEvent * event, enet_uint32 timeout) -{ - enet_uint32 waitCondition; - - if (event != NULL) - { - event -> type = ENET_EVENT_TYPE_NONE; - event -> peer = NULL; - event -> packet = NULL; - - switch (enet_protocol_dispatch_incoming_commands (host, event)) - { - case 1: - return 1; - - case -1: -#ifdef ENET_DEBUG - perror ("Error dispatching incoming packets"); -#endif - - return -1; - - default: - break; - } - } - - host -> serviceTime = enet_time_get (); - - timeout += host -> serviceTime; - - do - { - if (ENET_TIME_DIFFERENCE (host -> serviceTime, host -> bandwidthThrottleEpoch) >= ENET_HOST_BANDWIDTH_THROTTLE_INTERVAL) - enet_host_bandwidth_throttle (host); - - switch (enet_protocol_send_outgoing_commands (host, event, 1)) - { - case 1: - return 1; - - case -1: -#ifdef ENET_DEBUG - perror ("Error sending outgoing packets"); -#endif - - return -1; - - default: - break; - } - - switch (enet_protocol_receive_incoming_commands (host, event)) - { - case 1: - return 1; - - case -1: -#ifdef ENET_DEBUG - perror ("Error receiving incoming packets"); -#endif - - return -1; - - default: - break; - } - - switch (enet_protocol_send_outgoing_commands (host, event, 1)) - { - case 1: - return 1; - - case -1: -#ifdef ENET_DEBUG - perror ("Error sending outgoing packets"); -#endif - - return -1; - - default: - break; - } - - if (event != NULL) - { - switch (enet_protocol_dispatch_incoming_commands (host, event)) - { - case 1: - return 1; - - case -1: -#ifdef ENET_DEBUG - perror ("Error dispatching incoming packets"); -#endif - - return -1; - - default: - break; - } - } - - if (ENET_TIME_GREATER_EQUAL (host -> serviceTime, timeout)) - return 0; - - do - { - host -> serviceTime = enet_time_get (); - - if (ENET_TIME_GREATER_EQUAL (host -> serviceTime, timeout)) - return 0; - - waitCondition = ENET_SOCKET_WAIT_RECEIVE | ENET_SOCKET_WAIT_INTERRUPT; - - if (enet_socket_wait (host -> socket, & waitCondition, ENET_TIME_DIFFERENCE (timeout, host -> serviceTime)) != 0) - return -1; - } - while (waitCondition & ENET_SOCKET_WAIT_INTERRUPT); - - host -> serviceTime = enet_time_get (); - } while (waitCondition & ENET_SOCKET_WAIT_RECEIVE); - - return 0; -} - diff --git a/deps/enet/src/unix.c b/deps/enet/src/unix.c deleted file mode 100644 index a66bc33..0000000 --- a/deps/enet/src/unix.c +++ /dev/null @@ -1,630 +0,0 @@ -/** - @file unix.c - @brief ENet Unix system specific functions -*/ -#ifndef _WIN32 - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <sys/time.h> -#include <netinet/tcp.h> -#include <netdb.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <time.h> - -#define ENET_BUILDING_LIB 1 -#include "enet/enet.h" - -#ifdef __APPLE__ -#ifdef HAS_POLL -#undef HAS_POLL -#endif -#ifndef HAS_FCNTL -#define HAS_FCNTL 1 -#endif -#ifndef HAS_INET_PTON -#define HAS_INET_PTON 1 -#endif -#ifndef HAS_INET_NTOP -#define HAS_INET_NTOP 1 -#endif -#ifndef HAS_MSGHDR_FLAGS -#define HAS_MSGHDR_FLAGS 1 -#endif -#ifndef HAS_SOCKLEN_T -#define HAS_SOCKLEN_T 1 -#endif -#ifndef HAS_GETADDRINFO -#define HAS_GETADDRINFO 1 -#endif -#ifndef HAS_GETNAMEINFO -#define HAS_GETNAMEINFO 1 -#endif -#endif - -#ifdef HAS_FCNTL -#include <fcntl.h> -#endif - -#ifdef HAS_POLL -#include <poll.h> -#endif - -#if !defined(HAS_SOCKLEN_T) && !defined(__socklen_t_defined) -typedef int socklen_t; -#endif - -#ifndef MSG_NOSIGNAL -#define MSG_NOSIGNAL 0 -#endif - -static enet_uint32 timeBase = 0; - -int -enet_initialize (void) -{ - return 0; -} - -void -enet_deinitialize (void) -{ -} - -enet_uint32 -enet_host_random_seed (void) -{ - return (enet_uint32) time (NULL); -} - -enet_uint32 -enet_time_get (void) -{ - struct timeval timeVal; - - gettimeofday (& timeVal, NULL); - - return timeVal.tv_sec * 1000 + timeVal.tv_usec / 1000 - timeBase; -} - -void -enet_time_set (enet_uint32 newTimeBase) -{ - struct timeval timeVal; - - gettimeofday (& timeVal, NULL); - - timeBase = timeVal.tv_sec * 1000 + timeVal.tv_usec / 1000 - newTimeBase; -} - -int -enet_address_set_host_ip (ENetAddress * address, const char * name) -{ -#ifdef HAS_INET_PTON - if (! inet_pton (AF_INET, name, & address -> host)) -#else - if (! inet_aton (name, (struct in_addr *) & address -> host)) -#endif - return -1; - - return 0; -} - -int -enet_address_set_host (ENetAddress * address, const char * name) -{ -#ifdef HAS_GETADDRINFO - struct addrinfo hints, * resultList = NULL, * result = NULL; - - memset (& hints, 0, sizeof (hints)); - hints.ai_family = AF_INET; - - if (getaddrinfo (name, NULL, NULL, & resultList) != 0) - return -1; - - for (result = resultList; result != NULL; result = result -> ai_next) - { - if (result -> ai_family == AF_INET && result -> ai_addr != NULL && result -> ai_addrlen >= sizeof (struct sockaddr_in)) - { - struct sockaddr_in * sin = (struct sockaddr_in *) result -> ai_addr; - - address -> host = sin -> sin_addr.s_addr; - - freeaddrinfo (resultList); - - return 0; - } - } - - if (resultList != NULL) - freeaddrinfo (resultList); -#else - struct hostent * hostEntry = NULL; -#ifdef HAS_GETHOSTBYNAME_R - struct hostent hostData; - char buffer [2048]; - int errnum; - -#if defined(linux) || defined(__linux) || defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__GNU__) - gethostbyname_r (name, & hostData, buffer, sizeof (buffer), & hostEntry, & errnum); -#else - hostEntry = gethostbyname_r (name, & hostData, buffer, sizeof (buffer), & errnum); -#endif -#else - hostEntry = gethostbyname (name); -#endif - - if (hostEntry != NULL && hostEntry -> h_addrtype == AF_INET) - { - address -> host = * (enet_uint32 *) hostEntry -> h_addr_list [0]; - - return 0; - } -#endif - - return enet_address_set_host_ip (address, name); -} - -int -enet_address_get_host_ip (const ENetAddress * address, char * name, size_t nameLength) -{ -#ifdef HAS_INET_NTOP - if (inet_ntop (AF_INET, & address -> host, name, nameLength) == NULL) -#else - char * addr = inet_ntoa (* (struct in_addr *) & address -> host); - if (addr != NULL) - { - size_t addrLen = strlen(addr); - if (addrLen >= nameLength) - return -1; - memcpy (name, addr, addrLen + 1); - } - else -#endif - return -1; - return 0; -} - -int -enet_address_get_host (const ENetAddress * address, char * name, size_t nameLength) -{ -#ifdef HAS_GETNAMEINFO - struct sockaddr_in sin; - int err; - - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - - err = getnameinfo ((struct sockaddr *) & sin, sizeof (sin), name, nameLength, NULL, 0, NI_NAMEREQD); - if (! err) - { - if (name != NULL && nameLength > 0 && ! memchr (name, '\0', nameLength)) - return -1; - return 0; - } - if (err != EAI_NONAME) - return -1; -#else - struct in_addr in; - struct hostent * hostEntry = NULL; -#ifdef HAS_GETHOSTBYADDR_R - struct hostent hostData; - char buffer [2048]; - int errnum; - - in.s_addr = address -> host; - -#if defined(linux) || defined(__linux) || defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__GNU__) - gethostbyaddr_r ((char *) & in, sizeof (struct in_addr), AF_INET, & hostData, buffer, sizeof (buffer), & hostEntry, & errnum); -#else - hostEntry = gethostbyaddr_r ((char *) & in, sizeof (struct in_addr), AF_INET, & hostData, buffer, sizeof (buffer), & errnum); -#endif -#else - in.s_addr = address -> host; - - hostEntry = gethostbyaddr ((char *) & in, sizeof (struct in_addr), AF_INET); -#endif - - if (hostEntry != NULL) - { - size_t hostLen = strlen (hostEntry -> h_name); - if (hostLen >= nameLength) - return -1; - memcpy (name, hostEntry -> h_name, hostLen + 1); - return 0; - } -#endif - - return enet_address_get_host_ip (address, name, nameLength); -} - -int -enet_socket_bind (ENetSocket socket, const ENetAddress * address) -{ - struct sockaddr_in sin; - - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - - if (address != NULL) - { - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - } - else - { - sin.sin_port = 0; - sin.sin_addr.s_addr = INADDR_ANY; - } - - return bind (socket, - (struct sockaddr *) & sin, - sizeof (struct sockaddr_in)); -} - -int -enet_socket_get_address (ENetSocket socket, ENetAddress * address) -{ - struct sockaddr_in sin; - socklen_t sinLength = sizeof (struct sockaddr_in); - - if (getsockname (socket, (struct sockaddr *) & sin, & sinLength) == -1) - return -1; - - address -> host = (enet_uint32) sin.sin_addr.s_addr; - address -> port = ENET_NET_TO_HOST_16 (sin.sin_port); - - return 0; -} - -int -enet_socket_listen (ENetSocket socket, int backlog) -{ - return listen (socket, backlog < 0 ? SOMAXCONN : backlog); -} - -ENetSocket -enet_socket_create (ENetSocketType type) -{ - return socket (PF_INET, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0); -} - -int -enet_socket_set_option (ENetSocket socket, ENetSocketOption option, int value) -{ - int result = -1; - switch (option) - { - case ENET_SOCKOPT_NONBLOCK: -#ifdef HAS_FCNTL - result = fcntl (socket, F_SETFL, (value ? O_NONBLOCK : 0) | (fcntl (socket, F_GETFL) & ~O_NONBLOCK)); -#else - result = ioctl (socket, FIONBIO, & value); -#endif - break; - - case ENET_SOCKOPT_BROADCAST: - result = setsockopt (socket, SOL_SOCKET, SO_BROADCAST, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_REUSEADDR: - result = setsockopt (socket, SOL_SOCKET, SO_REUSEADDR, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_RCVBUF: - result = setsockopt (socket, SOL_SOCKET, SO_RCVBUF, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_SNDBUF: - result = setsockopt (socket, SOL_SOCKET, SO_SNDBUF, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_RCVTIMEO: - { - struct timeval timeVal; - timeVal.tv_sec = value / 1000; - timeVal.tv_usec = (value % 1000) * 1000; - result = setsockopt (socket, SOL_SOCKET, SO_RCVTIMEO, (char *) & timeVal, sizeof (struct timeval)); - break; - } - - case ENET_SOCKOPT_SNDTIMEO: - { - struct timeval timeVal; - timeVal.tv_sec = value / 1000; - timeVal.tv_usec = (value % 1000) * 1000; - result = setsockopt (socket, SOL_SOCKET, SO_SNDTIMEO, (char *) & timeVal, sizeof (struct timeval)); - break; - } - - case ENET_SOCKOPT_NODELAY: - result = setsockopt (socket, IPPROTO_TCP, TCP_NODELAY, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_TTL: - result = setsockopt (socket, IPPROTO_IP, IP_TTL, (char *) & value, sizeof (int)); - break; - - default: - break; - } - return result == -1 ? -1 : 0; -} - -int -enet_socket_get_option (ENetSocket socket, ENetSocketOption option, int * value) -{ - int result = -1; - socklen_t len; - switch (option) - { - case ENET_SOCKOPT_ERROR: - len = sizeof (int); - result = getsockopt (socket, SOL_SOCKET, SO_ERROR, value, & len); - break; - - case ENET_SOCKOPT_TTL: - len = sizeof (int); - result = getsockopt (socket, IPPROTO_IP, IP_TTL, (char *) value, & len); - break; - - default: - break; - } - return result == -1 ? -1 : 0; -} - -int -enet_socket_connect (ENetSocket socket, const ENetAddress * address) -{ - struct sockaddr_in sin; - int result; - - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - - result = connect (socket, (struct sockaddr *) & sin, sizeof (struct sockaddr_in)); - if (result == -1 && errno == EINPROGRESS) - return 0; - - return result; -} - -ENetSocket -enet_socket_accept (ENetSocket socket, ENetAddress * address) -{ - int result; - struct sockaddr_in sin; - socklen_t sinLength = sizeof (struct sockaddr_in); - - result = accept (socket, - address != NULL ? (struct sockaddr *) & sin : NULL, - address != NULL ? & sinLength : NULL); - - if (result == -1) - return ENET_SOCKET_NULL; - - if (address != NULL) - { - address -> host = (enet_uint32) sin.sin_addr.s_addr; - address -> port = ENET_NET_TO_HOST_16 (sin.sin_port); - } - - return result; -} - -int -enet_socket_shutdown (ENetSocket socket, ENetSocketShutdown how) -{ - return shutdown (socket, (int) how); -} - -void -enet_socket_destroy (ENetSocket socket) -{ - if (socket != -1) - close (socket); -} - -int -enet_socket_send (ENetSocket socket, - const ENetAddress * address, - const ENetBuffer * buffers, - size_t bufferCount) -{ - struct msghdr msgHdr; - struct sockaddr_in sin; - int sentLength; - - memset (& msgHdr, 0, sizeof (struct msghdr)); - - if (address != NULL) - { - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - - msgHdr.msg_name = & sin; - msgHdr.msg_namelen = sizeof (struct sockaddr_in); - } - - msgHdr.msg_iov = (struct iovec *) buffers; - msgHdr.msg_iovlen = bufferCount; - - sentLength = sendmsg (socket, & msgHdr, MSG_NOSIGNAL); - - if (sentLength == -1) - { - if (errno == EWOULDBLOCK) - return 0; - - return -1; - } - - return sentLength; -} - -int -enet_socket_receive (ENetSocket socket, - ENetAddress * address, - ENetBuffer * buffers, - size_t bufferCount) -{ - struct msghdr msgHdr; - struct sockaddr_in sin; - int recvLength; - - memset (& msgHdr, 0, sizeof (struct msghdr)); - - if (address != NULL) - { - msgHdr.msg_name = & sin; - msgHdr.msg_namelen = sizeof (struct sockaddr_in); - } - - msgHdr.msg_iov = (struct iovec *) buffers; - msgHdr.msg_iovlen = bufferCount; - - recvLength = recvmsg (socket, & msgHdr, MSG_NOSIGNAL); - - if (recvLength == -1) - { - switch (errno) - { - case EWOULDBLOCK: - return 0; - case EINTR: - case EMSGSIZE: - return -2; - default: - return -1; - } - } - -#ifdef HAS_MSGHDR_FLAGS - if (msgHdr.msg_flags & MSG_TRUNC) - return -2; -#endif - - if (address != NULL) - { - address -> host = (enet_uint32) sin.sin_addr.s_addr; - address -> port = ENET_NET_TO_HOST_16 (sin.sin_port); - } - - return recvLength; -} - -int -enet_socketset_select (ENetSocket maxSocket, ENetSocketSet * readSet, ENetSocketSet * writeSet, enet_uint32 timeout) -{ - struct timeval timeVal; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - return select (maxSocket + 1, readSet, writeSet, NULL, & timeVal); -} - -int -enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeout) -{ -#ifdef HAS_POLL - struct pollfd pollSocket; - int pollCount; - - pollSocket.fd = socket; - pollSocket.events = 0; - - if (* condition & ENET_SOCKET_WAIT_SEND) - pollSocket.events |= POLLOUT; - - if (* condition & ENET_SOCKET_WAIT_RECEIVE) - pollSocket.events |= POLLIN; - - pollCount = poll (& pollSocket, 1, timeout); - - if (pollCount < 0) - { - if (errno == EINTR && * condition & ENET_SOCKET_WAIT_INTERRUPT) - { - * condition = ENET_SOCKET_WAIT_INTERRUPT; - - return 0; - } - - return -1; - } - - * condition = ENET_SOCKET_WAIT_NONE; - - if (pollCount == 0) - return 0; - - if (pollSocket.revents & POLLOUT) - * condition |= ENET_SOCKET_WAIT_SEND; - - if (pollSocket.revents & POLLIN) - * condition |= ENET_SOCKET_WAIT_RECEIVE; - - return 0; -#else - fd_set readSet, writeSet; - struct timeval timeVal; - int selectCount; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - FD_ZERO (& readSet); - FD_ZERO (& writeSet); - - if (* condition & ENET_SOCKET_WAIT_SEND) - FD_SET (socket, & writeSet); - - if (* condition & ENET_SOCKET_WAIT_RECEIVE) - FD_SET (socket, & readSet); - - selectCount = select (socket + 1, & readSet, & writeSet, NULL, & timeVal); - - if (selectCount < 0) - { - if (errno == EINTR && * condition & ENET_SOCKET_WAIT_INTERRUPT) - { - * condition = ENET_SOCKET_WAIT_INTERRUPT; - - return 0; - } - - return -1; - } - - * condition = ENET_SOCKET_WAIT_NONE; - - if (selectCount == 0) - return 0; - - if (FD_ISSET (socket, & writeSet)) - * condition |= ENET_SOCKET_WAIT_SEND; - - if (FD_ISSET (socket, & readSet)) - * condition |= ENET_SOCKET_WAIT_RECEIVE; - - return 0; -#endif -} - -#endif - diff --git a/deps/enet/src/win32.c b/deps/enet/src/win32.c deleted file mode 100644 index 578a322..0000000 --- a/deps/enet/src/win32.c +++ /dev/null @@ -1,455 +0,0 @@ -/** - @file win32.c - @brief ENet Win32 system specific functions -*/ -#ifdef _WIN32 - -#define ENET_BUILDING_LIB 1 -#include "enet/enet.h" -#include <windows.h> -#include <mmsystem.h> -#include <ws2tcpip.h> - -static enet_uint32 timeBase = 0; - -int -enet_initialize (void) -{ - WORD versionRequested = MAKEWORD (1, 1); - WSADATA wsaData; - - if (WSAStartup (versionRequested, & wsaData)) - return -1; - - if (LOBYTE (wsaData.wVersion) != 1|| - HIBYTE (wsaData.wVersion) != 1) - { - WSACleanup (); - - return -1; - } - - timeBeginPeriod (1); - - return 0; -} - -void -enet_deinitialize (void) -{ - timeEndPeriod (1); - - WSACleanup (); -} - -enet_uint32 -enet_host_random_seed (void) -{ - return (enet_uint32) timeGetTime (); -} - -enet_uint32 -enet_time_get (void) -{ - return (enet_uint32) timeGetTime () - timeBase; -} - -void -enet_time_set (enet_uint32 newTimeBase) -{ - timeBase = (enet_uint32) timeGetTime () - newTimeBase; -} - -int -enet_address_set_host_ip (ENetAddress * address, const char * name) -{ - enet_uint8 vals [4] = { 0, 0, 0, 0 }; - int i; - - for (i = 0; i < 4; ++ i) - { - const char * next = name + 1; - if (* name != '0') - { - long val = strtol (name, (char **) & next, 10); - if (val < 0 || val > 255 || next == name || next - name > 3) - return -1; - vals [i] = (enet_uint8) val; - } - - if (* next != (i < 3 ? '.' : '\0')) - return -1; - name = next + 1; - } - - memcpy (& address -> host, vals, sizeof (enet_uint32)); - return 0; -} - -int -enet_address_set_host (ENetAddress * address, const char * name) -{ - struct hostent * hostEntry; - - hostEntry = gethostbyname (name); - if (hostEntry == NULL || - hostEntry -> h_addrtype != AF_INET) - return enet_address_set_host_ip (address, name); - - address -> host = * (enet_uint32 *) hostEntry -> h_addr_list [0]; - - return 0; -} - -int -enet_address_get_host_ip (const ENetAddress * address, char * name, size_t nameLength) -{ - char * addr = inet_ntoa (* (struct in_addr *) & address -> host); - if (addr == NULL) - return -1; - else - { - size_t addrLen = strlen(addr); - if (addrLen >= nameLength) - return -1; - memcpy (name, addr, addrLen + 1); - } - return 0; -} - -int -enet_address_get_host (const ENetAddress * address, char * name, size_t nameLength) -{ - struct in_addr in; - struct hostent * hostEntry; - - in.s_addr = address -> host; - - hostEntry = gethostbyaddr ((char *) & in, sizeof (struct in_addr), AF_INET); - if (hostEntry == NULL) - return enet_address_get_host_ip (address, name, nameLength); - else - { - size_t hostLen = strlen (hostEntry -> h_name); - if (hostLen >= nameLength) - return -1; - memcpy (name, hostEntry -> h_name, hostLen + 1); - } - - return 0; -} - -int -enet_socket_bind (ENetSocket socket, const ENetAddress * address) -{ - struct sockaddr_in sin; - - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - - if (address != NULL) - { - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - } - else - { - sin.sin_port = 0; - sin.sin_addr.s_addr = INADDR_ANY; - } - - return bind (socket, - (struct sockaddr *) & sin, - sizeof (struct sockaddr_in)) == SOCKET_ERROR ? -1 : 0; -} - -int -enet_socket_get_address (ENetSocket socket, ENetAddress * address) -{ - struct sockaddr_in sin; - int sinLength = sizeof (struct sockaddr_in); - - if (getsockname (socket, (struct sockaddr *) & sin, & sinLength) == -1) - return -1; - - address -> host = (enet_uint32) sin.sin_addr.s_addr; - address -> port = ENET_NET_TO_HOST_16 (sin.sin_port); - - return 0; -} - -int -enet_socket_listen (ENetSocket socket, int backlog) -{ - return listen (socket, backlog < 0 ? SOMAXCONN : backlog) == SOCKET_ERROR ? -1 : 0; -} - -ENetSocket -enet_socket_create (ENetSocketType type) -{ - return socket (PF_INET, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0); -} - -int -enet_socket_set_option (ENetSocket socket, ENetSocketOption option, int value) -{ - int result = SOCKET_ERROR; - switch (option) - { - case ENET_SOCKOPT_NONBLOCK: - { - u_long nonBlocking = (u_long) value; - result = ioctlsocket (socket, FIONBIO, & nonBlocking); - break; - } - - case ENET_SOCKOPT_BROADCAST: - result = setsockopt (socket, SOL_SOCKET, SO_BROADCAST, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_REUSEADDR: - result = setsockopt (socket, SOL_SOCKET, SO_REUSEADDR, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_RCVBUF: - result = setsockopt (socket, SOL_SOCKET, SO_RCVBUF, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_SNDBUF: - result = setsockopt (socket, SOL_SOCKET, SO_SNDBUF, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_RCVTIMEO: - result = setsockopt (socket, SOL_SOCKET, SO_RCVTIMEO, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_SNDTIMEO: - result = setsockopt (socket, SOL_SOCKET, SO_SNDTIMEO, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_NODELAY: - result = setsockopt (socket, IPPROTO_TCP, TCP_NODELAY, (char *) & value, sizeof (int)); - break; - - case ENET_SOCKOPT_TTL: - result = setsockopt (socket, IPPROTO_IP, IP_TTL, (char *) & value, sizeof (int)); - break; - - default: - break; - } - return result == SOCKET_ERROR ? -1 : 0; -} - -int -enet_socket_get_option (ENetSocket socket, ENetSocketOption option, int * value) -{ - int result = SOCKET_ERROR, len; - switch (option) - { - case ENET_SOCKOPT_ERROR: - len = sizeof(int); - result = getsockopt (socket, SOL_SOCKET, SO_ERROR, (char *) value, & len); - break; - - case ENET_SOCKOPT_TTL: - len = sizeof(int); - result = getsockopt (socket, IPPROTO_IP, IP_TTL, (char *) value, & len); - break; - - default: - break; - } - return result == SOCKET_ERROR ? -1 : 0; -} - -int -enet_socket_connect (ENetSocket socket, const ENetAddress * address) -{ - struct sockaddr_in sin; - int result; - - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - - result = connect (socket, (struct sockaddr *) & sin, sizeof (struct sockaddr_in)); - if (result == SOCKET_ERROR && WSAGetLastError () != WSAEWOULDBLOCK) - return -1; - - return 0; -} - -ENetSocket -enet_socket_accept (ENetSocket socket, ENetAddress * address) -{ - SOCKET result; - struct sockaddr_in sin; - int sinLength = sizeof (struct sockaddr_in); - - result = accept (socket, - address != NULL ? (struct sockaddr *) & sin : NULL, - address != NULL ? & sinLength : NULL); - - if (result == INVALID_SOCKET) - return ENET_SOCKET_NULL; - - if (address != NULL) - { - address -> host = (enet_uint32) sin.sin_addr.s_addr; - address -> port = ENET_NET_TO_HOST_16 (sin.sin_port); - } - - return result; -} - -int -enet_socket_shutdown (ENetSocket socket, ENetSocketShutdown how) -{ - return shutdown (socket, (int) how) == SOCKET_ERROR ? -1 : 0; -} - -void -enet_socket_destroy (ENetSocket socket) -{ - if (socket != INVALID_SOCKET) - closesocket (socket); -} - -int -enet_socket_send (ENetSocket socket, - const ENetAddress * address, - const ENetBuffer * buffers, - size_t bufferCount) -{ - struct sockaddr_in sin; - DWORD sentLength = 0; - - if (address != NULL) - { - memset (& sin, 0, sizeof (struct sockaddr_in)); - - sin.sin_family = AF_INET; - sin.sin_port = ENET_HOST_TO_NET_16 (address -> port); - sin.sin_addr.s_addr = address -> host; - } - - if (WSASendTo (socket, - (LPWSABUF) buffers, - (DWORD) bufferCount, - & sentLength, - 0, - address != NULL ? (struct sockaddr *) & sin : NULL, - address != NULL ? sizeof (struct sockaddr_in) : 0, - NULL, - NULL) == SOCKET_ERROR) - { - if (WSAGetLastError () == WSAEWOULDBLOCK) - return 0; - - return -1; - } - - return (int) sentLength; -} - -int -enet_socket_receive (ENetSocket socket, - ENetAddress * address, - ENetBuffer * buffers, - size_t bufferCount) -{ - INT sinLength = sizeof (struct sockaddr_in); - DWORD flags = 0, - recvLength = 0; - struct sockaddr_in sin; - - if (WSARecvFrom (socket, - (LPWSABUF) buffers, - (DWORD) bufferCount, - & recvLength, - & flags, - address != NULL ? (struct sockaddr *) & sin : NULL, - address != NULL ? & sinLength : NULL, - NULL, - NULL) == SOCKET_ERROR) - { - switch (WSAGetLastError ()) - { - case WSAEWOULDBLOCK: - case WSAECONNRESET: - return 0; - case WSAEINTR: - case WSAEMSGSIZE: - return -2; - default: - return -1; - } - } - - if (flags & MSG_PARTIAL) - return -2; - - if (address != NULL) - { - address -> host = (enet_uint32) sin.sin_addr.s_addr; - address -> port = ENET_NET_TO_HOST_16 (sin.sin_port); - } - - return (int) recvLength; -} - -int -enet_socketset_select (ENetSocket maxSocket, ENetSocketSet * readSet, ENetSocketSet * writeSet, enet_uint32 timeout) -{ - struct timeval timeVal; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - return select (maxSocket + 1, readSet, writeSet, NULL, & timeVal); -} - -int -enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeout) -{ - fd_set readSet, writeSet; - struct timeval timeVal; - int selectCount; - - timeVal.tv_sec = timeout / 1000; - timeVal.tv_usec = (timeout % 1000) * 1000; - - FD_ZERO (& readSet); - FD_ZERO (& writeSet); - - if (* condition & ENET_SOCKET_WAIT_SEND) - FD_SET (socket, & writeSet); - - if (* condition & ENET_SOCKET_WAIT_RECEIVE) - FD_SET (socket, & readSet); - - selectCount = select (socket + 1, & readSet, & writeSet, NULL, & timeVal); - - if (selectCount < 0) - return -1; - - * condition = ENET_SOCKET_WAIT_NONE; - - if (selectCount == 0) - return 0; - - if (FD_ISSET (socket, & writeSet)) - * condition |= ENET_SOCKET_WAIT_SEND; - - if (FD_ISSET (socket, & readSet)) - * condition |= ENET_SOCKET_WAIT_RECEIVE; - - return 0; -} - -#endif - |