|
|
@@ -1,1913 +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 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 -> needsDispatch)
|
|
|
- {
|
|
|
- enet_list_insert (enet_list_end (& host -> dispatchQueue), & peer -> dispatchList);
|
|
|
-
|
|
|
- peer -> needsDispatch = 1;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-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 -> needsDispatch = 0;
|
|
|
-
|
|
|
- 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 -> needsDispatch = 1;
|
|
|
-
|
|
|
- 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)
|
|
|
-{
|
|
|
- ENetOutgoingCommand * outgoingCommand;
|
|
|
-
|
|
|
- while (! enet_list_empty (& peer -> sentUnreliableCommands))
|
|
|
- {
|
|
|
- outgoingCommand = (ENetOutgoingCommand *) enet_list_front (& peer -> 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);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-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))
|
|
|
- {
|
|
|
- for (currentCommand = enet_list_begin (& peer -> outgoingReliableCommands);
|
|
|
- currentCommand != enet_list_end (& peer -> outgoingReliableCommands);
|
|
|
- currentCommand = enet_list_next (currentCommand))
|
|
|
- {
|
|
|
- outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
-
|
|
|
- if (outgoingCommand -> sendAttempts < 1) return ENET_PROTOCOL_COMMAND_NONE;
|
|
|
-
|
|
|
- if (outgoingCommand -> reliableSequenceNumber == reliableSequenceNumber &&
|
|
|
- outgoingCommand -> command.header.channelID == channelID)
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (currentCommand == enet_list_end (& peer -> outgoingReliableCommands))
|
|
|
- return ENET_PROTOCOL_COMMAND_NONE;
|
|
|
-
|
|
|
- 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 &= ~ (1 << 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 -> 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;
|
|
|
-
|
|
|
- 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] & (1 << (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] |= 1 << (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 > 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 ||
|
|
|
- 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] & (1 << (fragmentNumber % 32))) == 0)
|
|
|
- {
|
|
|
- -- startCommand -> fragmentsRemaining;
|
|
|
-
|
|
|
- startCommand -> fragments [fragmentNumber / 32] |= (1 << (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);
|
|
|
- }
|
|
|
-
|
|
|
- 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 > 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 ||
|
|
|
- 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] & (1 << (fragmentNumber % 32))) == 0)
|
|
|
- {
|
|
|
- -- startCommand -> fragmentsRemaining;
|
|
|
-
|
|
|
- startCommand -> fragments [fragmentNumber / 32] |= (1 << (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);
|
|
|
- }
|
|
|
-
|
|
|
- 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;
|
|
|
-
|
|
|
- peer -> lastReceiveTime = host -> serviceTime;
|
|
|
- peer -> earliestTimeout = 0;
|
|
|
-
|
|
|
- roundTripTime = ENET_TIME_DIFFERENCE (host -> serviceTime, receivedSentTime);
|
|
|
-
|
|
|
- enet_peer_throttle (peer, roundTripTime);
|
|
|
-
|
|
|
- peer -> roundTripTimeVariance -= peer -> roundTripTimeVariance / 4;
|
|
|
-
|
|
|
- if (roundTripTime >= peer -> roundTripTime)
|
|
|
- {
|
|
|
- peer -> roundTripTime += (roundTripTime - peer -> roundTripTime) / 8;
|
|
|
- peer -> roundTripTimeVariance += (roundTripTime - peer -> roundTripTime) / 4;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- peer -> roundTripTime -= (peer -> roundTripTime - roundTripTime) / 8;
|
|
|
- peer -> roundTripTimeVariance += (peer -> roundTripTime - roundTripTime) / 4;
|
|
|
- }
|
|
|
-
|
|
|
- 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 = peer -> highestRoundTripTimeVariance;
|
|
|
- peer -> lowestRoundTripTime = peer -> roundTripTime;
|
|
|
- peer -> highestRoundTripTimeVariance = peer -> roundTripTimeVariance;
|
|
|
- peer -> packetThrottleEpoch = host -> serviceTime;
|
|
|
- }
|
|
|
-
|
|
|
- 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_list_empty (& peer -> outgoingReliableCommands) &&
|
|
|
- enet_list_empty (& peer -> outgoingUnreliableCommands) &&
|
|
|
- enet_list_empty (& peer -> sentReliableCommands))
|
|
|
- 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)],
|
|
|
- desiredChecksum = * checksum;
|
|
|
- ENetBuffer buffer;
|
|
|
-
|
|
|
- * checksum = peer != NULL ? peer -> connectID : 0;
|
|
|
-
|
|
|
- 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 < 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 -1;
|
|
|
-}
|
|
|
-
|
|
|
-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))
|
|
|
- {
|
|
|
- host -> continueSending = 1;
|
|
|
-
|
|
|
- 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 void
|
|
|
-enet_protocol_send_unreliable_outgoing_commands (ENetHost * host, ENetPeer * peer)
|
|
|
-{
|
|
|
- ENetProtocol * command = & host -> commands [host -> commandCount];
|
|
|
- ENetBuffer * buffer = & host -> buffers [host -> bufferCount];
|
|
|
- ENetOutgoingCommand * outgoingCommand;
|
|
|
- ENetListIterator currentCommand;
|
|
|
-
|
|
|
- currentCommand = enet_list_begin (& peer -> outgoingUnreliableCommands);
|
|
|
-
|
|
|
- while (currentCommand != enet_list_end (& peer -> outgoingUnreliableCommands))
|
|
|
- {
|
|
|
- size_t commandSize;
|
|
|
-
|
|
|
- outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
- 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 &&
|
|
|
- peer -> mtu - host -> packetSize < commandSize + outgoingCommand -> fragmentLength))
|
|
|
- {
|
|
|
- host -> continueSending = 1;
|
|
|
-
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- currentCommand = enet_list_next (currentCommand);
|
|
|
-
|
|
|
- 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 -> outgoingUnreliableCommands))
|
|
|
- break;
|
|
|
-
|
|
|
- outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
- if (outgoingCommand -> reliableSequenceNumber != reliableSequenceNumber ||
|
|
|
- outgoingCommand -> unreliableSequenceNumber != unreliableSequenceNumber)
|
|
|
- break;
|
|
|
-
|
|
|
- currentCommand = enet_list_next (currentCommand);
|
|
|
- }
|
|
|
-
|
|
|
- continue;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- buffer -> data = command;
|
|
|
- buffer -> dataLength = commandSize;
|
|
|
-
|
|
|
- host -> packetSize += buffer -> dataLength;
|
|
|
-
|
|
|
- * command = outgoingCommand -> command;
|
|
|
-
|
|
|
- enet_list_remove (& outgoingCommand -> outgoingCommandList);
|
|
|
-
|
|
|
- if (outgoingCommand -> packet != NULL)
|
|
|
- {
|
|
|
- ++ buffer;
|
|
|
-
|
|
|
- buffer -> data = outgoingCommand -> packet -> data + outgoingCommand -> fragmentOffset;
|
|
|
- buffer -> dataLength = outgoingCommand -> fragmentLength;
|
|
|
-
|
|
|
- host -> packetSize += buffer -> dataLength;
|
|
|
-
|
|
|
- enet_list_insert (enet_list_end (& peer -> sentUnreliableCommands), outgoingCommand);
|
|
|
- }
|
|
|
- else
|
|
|
- enet_free (outgoingCommand);
|
|
|
-
|
|
|
- ++ command;
|
|
|
- ++ buffer;
|
|
|
- }
|
|
|
-
|
|
|
- host -> commandCount = command - host -> commands;
|
|
|
- host -> bufferCount = buffer - host -> buffers;
|
|
|
-
|
|
|
- if (peer -> state == ENET_PEER_STATE_DISCONNECT_LATER &&
|
|
|
- enet_list_empty (& peer -> outgoingReliableCommands) &&
|
|
|
- enet_list_empty (& peer -> outgoingUnreliableCommands) &&
|
|
|
- enet_list_empty (& peer -> sentReliableCommands))
|
|
|
- enet_peer_disconnect (peer, peer -> eventData);
|
|
|
-}
|
|
|
-
|
|
|
-static int
|
|
|
-enet_protocol_check_timeouts (ENetHost * host, ENetPeer * peer, ENetEvent * event)
|
|
|
-{
|
|
|
- ENetOutgoingCommand * outgoingCommand;
|
|
|
- ENetListIterator currentCommand, insertPosition;
|
|
|
-
|
|
|
- currentCommand = enet_list_begin (& peer -> sentReliableCommands);
|
|
|
- insertPosition = enet_list_begin (& peer -> outgoingReliableCommands);
|
|
|
-
|
|
|
- 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 ||
|
|
|
- (outgoingCommand -> roundTripTimeout >= outgoingCommand -> roundTripTimeoutLimit &&
|
|
|
- ENET_TIME_DIFFERENCE (host -> serviceTime, peer -> earliestTimeout) >= peer -> timeoutMinimum)))
|
|
|
- {
|
|
|
- enet_protocol_notify_disconnect (host, peer, event);
|
|
|
-
|
|
|
- return 1;
|
|
|
- }
|
|
|
-
|
|
|
- if (outgoingCommand -> packet != NULL)
|
|
|
- peer -> reliableDataInTransit -= outgoingCommand -> fragmentLength;
|
|
|
-
|
|
|
- ++ peer -> packetsLost;
|
|
|
-
|
|
|
- outgoingCommand -> roundTripTimeout *= 2;
|
|
|
-
|
|
|
- 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_send_reliable_outgoing_commands (ENetHost * host, ENetPeer * peer)
|
|
|
-{
|
|
|
- ENetProtocol * command = & host -> commands [host -> commandCount];
|
|
|
- ENetBuffer * buffer = & host -> buffers [host -> bufferCount];
|
|
|
- ENetOutgoingCommand * outgoingCommand;
|
|
|
- ENetListIterator currentCommand;
|
|
|
- ENetChannel *channel;
|
|
|
- enet_uint16 reliableWindow;
|
|
|
- size_t commandSize;
|
|
|
- int windowExceeded = 0, windowWrap = 0, canPing = 1;
|
|
|
-
|
|
|
- currentCommand = enet_list_begin (& peer -> outgoingReliableCommands);
|
|
|
-
|
|
|
- while (currentCommand != enet_list_end (& peer -> outgoingReliableCommands))
|
|
|
- {
|
|
|
- outgoingCommand = (ENetOutgoingCommand *) currentCommand;
|
|
|
-
|
|
|
- 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 &&
|
|
|
- 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 & ((((1 << ENET_PEER_FREE_RELIABLE_WINDOWS) - 1) << reliableWindow) |
|
|
|
- (((1 << ENET_PEER_FREE_RELIABLE_WINDOWS) - 1) >> (ENET_PEER_RELIABLE_WINDOWS - reliableWindow)))))
|
|
|
- windowWrap = 1;
|
|
|
- if (windowWrap)
|
|
|
- {
|
|
|
- currentCommand = enet_list_next (currentCommand);
|
|
|
-
|
|
|
- continue;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- if (outgoingCommand -> packet != NULL)
|
|
|
- {
|
|
|
- if (! windowExceeded)
|
|
|
- {
|
|
|
- enet_uint32 windowSize = (peer -> packetThrottle * peer -> windowSize) / ENET_PEER_PACKET_THROTTLE_SCALE;
|
|
|
-
|
|
|
- if (peer -> reliableDataInTransit + outgoingCommand -> fragmentLength > ENET_MAX (windowSize, peer -> mtu))
|
|
|
- windowExceeded = 1;
|
|
|
- }
|
|
|
- if (windowExceeded)
|
|
|
- {
|
|
|
- currentCommand = enet_list_next (currentCommand);
|
|
|
-
|
|
|
- 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)))
|
|
|
- {
|
|
|
- host -> continueSending = 1;
|
|
|
-
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- currentCommand = enet_list_next (currentCommand);
|
|
|
-
|
|
|
- if (channel != NULL && outgoingCommand -> sendAttempts < 1)
|
|
|
- {
|
|
|
- channel -> usedReliableWindows |= 1 << reliableWindow;
|
|
|
- ++ channel -> reliableWindows [reliableWindow];
|
|
|
- }
|
|
|
-
|
|
|
- ++ outgoingCommand -> sendAttempts;
|
|
|
-
|
|
|
- if (outgoingCommand -> roundTripTimeout == 0)
|
|
|
- {
|
|
|
- outgoingCommand -> roundTripTimeout = peer -> roundTripTime + 4 * peer -> roundTripTimeVariance;
|
|
|
- outgoingCommand -> roundTripTimeoutLimit = peer -> timeoutLimit * outgoingCommand -> roundTripTimeout;
|
|
|
- }
|
|
|
-
|
|
|
- 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;
|
|
|
-
|
|
|
- buffer -> data = command;
|
|
|
- buffer -> dataLength = commandSize;
|
|
|
-
|
|
|
- host -> packetSize += buffer -> dataLength;
|
|
|
- host -> headerFlags |= ENET_PROTOCOL_HEADER_FLAG_SENT_TIME;
|
|
|
-
|
|
|
- * command = outgoingCommand -> command;
|
|
|
-
|
|
|
- if (outgoingCommand -> packet != NULL)
|
|
|
- {
|
|
|
- ++ buffer;
|
|
|
-
|
|
|
- buffer -> data = outgoingCommand -> packet -> data + outgoingCommand -> fragmentOffset;
|
|
|
- buffer -> dataLength = outgoingCommand -> fragmentLength;
|
|
|
-
|
|
|
- host -> packetSize += outgoingCommand -> fragmentLength;
|
|
|
-
|
|
|
- peer -> reliableDataInTransit += outgoingCommand -> fragmentLength;
|
|
|
- }
|
|
|
-
|
|
|
- ++ peer -> packetsSent;
|
|
|
-
|
|
|
- ++ command;
|
|
|
- ++ buffer;
|
|
|
- }
|
|
|
-
|
|
|
- host -> commandCount = command - host -> commands;
|
|
|
- host -> bufferCount = buffer - host -> buffers;
|
|
|
-
|
|
|
- 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;
|
|
|
- ENetPeer * currentPeer;
|
|
|
- int sentLength;
|
|
|
- size_t shouldCompress = 0;
|
|
|
-
|
|
|
- host -> continueSending = 1;
|
|
|
-
|
|
|
- while (host -> continueSending)
|
|
|
- for (host -> continueSending = 0,
|
|
|
- currentPeer = host -> peers;
|
|
|
- currentPeer < & host -> peers [host -> peerCount];
|
|
|
- ++ currentPeer)
|
|
|
- {
|
|
|
- if (currentPeer -> state == ENET_PEER_STATE_DISCONNECTED ||
|
|
|
- currentPeer -> state == ENET_PEER_STATE_ZOMBIE)
|
|
|
- continue;
|
|
|
-
|
|
|
- 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
|
|
|
- continue;
|
|
|
- }
|
|
|
-
|
|
|
- if ((enet_list_empty (& currentPeer -> outgoingReliableCommands) ||
|
|
|
- enet_protocol_send_reliable_outgoing_commands (host, currentPeer)) &&
|
|
|
- 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_send_reliable_outgoing_commands (host, currentPeer);
|
|
|
- }
|
|
|
-
|
|
|
- if (! enet_list_empty (& currentPeer -> outgoingUnreliableCommands))
|
|
|
- enet_protocol_send_unreliable_outgoing_commands (host, currentPeer);
|
|
|
-
|
|
|
- if (host -> commandCount == 0)
|
|
|
- continue;
|
|
|
-
|
|
|
- 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/%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 -> outgoingReliableCommands), enet_list_size (& currentPeer -> outgoingUnreliableCommands), 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 / 4;
|
|
|
-
|
|
|
- if (packetLoss >= currentPeer -> packetLoss)
|
|
|
- {
|
|
|
- currentPeer -> packetLoss += (packetLoss - currentPeer -> packetLoss) / 8;
|
|
|
- currentPeer -> packetLossVariance += (packetLoss - currentPeer -> packetLoss) / 4;
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- currentPeer -> packetLoss -= (currentPeer -> packetLoss - packetLoss) / 8;
|
|
|
- currentPeer -> packetLossVariance += (currentPeer -> packetLoss - packetLoss) / 4;
|
|
|
- }
|
|
|
-
|
|
|
- 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];
|
|
|
- * checksum = currentPeer -> outgoingPeerID < ENET_PROTOCOL_MAXIMUM_PEER_ID ? currentPeer -> connectID : 0;
|
|
|
- host -> buffers -> dataLength += sizeof (enet_uint32);
|
|
|
- * checksum = host -> checksum (host -> buffers, host -> bufferCount);
|
|
|
- }
|
|
|
-
|
|
|
- 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);
|
|
|
-
|
|
|
- if (sentLength < 0)
|
|
|
- return -1;
|
|
|
-
|
|
|
- host -> totalSentData += sentLength;
|
|
|
- host -> totalSentPackets ++;
|
|
|
- }
|
|
|
-
|
|
|
- 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;
|
|
|
-}
|
|
|
-
|
tanghai