static void
enet_protocol_handle_send_unreliable (ENetHost * host, ENetPeer * peer, const ENetProtocol * command)
{
ENetPacket * packet;
if (command -> header.commandLength <= sizeof (ENetProtocolSendUnreliable) ||
command -> header.channelID >= peer -> channelCount)
return;
packet = enet_packet_create ((const enet_uint8 *) command + sizeof (ENetProtocolSendUnreliable),
command -> header.commandLength - sizeof (ENetProtocolSendUnreliable),
0);
enet_peer_queue_incoming_command (peer, command, packet, 0);
}
static void
enet_protocol_handle_send_reliable (ENetHost * host, ENetPeer * peer, const ENetProtocol * command)
{
ENetPacket * packet;
if (command -> header.commandLength <= sizeof (ENetProtocolSendReliable) ||
command -> header.channelID >= peer -> channelCount ||
peer -> state != ENET_PEER_STATE_CONNECTED)
return;
packet = enet_packet_create ((const enet_uint8 *) command + sizeof (ENetProtocolSendReliable),
command -> header.commandLength - sizeof (ENetProtocolSendReliable),
ENET_PACKET_FLAG_RELIABLE);
enet_peer_queue_incoming_command (peer, command, packet, 0);
}
static void
enet_protocol_handle_send_fragment (ENetHost * host, ENetPeer * peer, const ENetProtocol * command)
{
enet_uint32 fragmentNumber,
fragmentCount,
fragmentOffset,
fragmentLength,
startSequenceNumber,
totalLength;
ENetChannel * channel;
ENetListIterator currentCommand;
ENetIncomingCommand * startCommand;
if (command -> header.commandLength <= sizeof (ENetProtocolSendFragment) ||
command -> header.channelID >= peer -> channelCount ||
peer -> state != ENET_PEER_STATE_CONNECTED)
return;
startSequenceNumber = ENET_NET_TO_HOST_32 (command -> sendFragment.startSequenceNumber);
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);
fragmentLength = command -> header.commandLength - sizeof (ENetProtocolSendFragment);
if (fragmentOffset >= totalLength ||
fragmentOffset + fragmentLength > totalLength ||
fragmentNumber >= fragmentCount)
return;
channel = & peer -> channels [command -> header.channelID];
if (startSequenceNumber <= channel -> incomingReliableSequenceNumber)
return;
for (currentCommand = enet_list_previous (enet_list_end (& channel -> incomingReliableCommands));
currentCommand != enet_list_end (& channel -> incomingReliableCommands);
currentCommand = enet_list_previous (currentCommand))
{
startCommand = (ENetIncomingCommand *) currentCommand;
if (startCommand -> command.header.command == ENET_PROTOCOL_COMMAND_SEND_FRAGMENT &&
startCommand -> command.sendFragment.startSequenceNumber == startSequenceNumber)
break;
}
if (currentCommand == enet_list_end (& channel -> incomingReliableCommands))
{
ENetProtocol hostCommand = * command;
hostCommand.sendFragment.startSequenceNumber = startSequenceNumber;
hostCommand.sendFragment.fragmentNumber = fragmentNumber;
hostCommand.sendFragment.fragmentCount = fragmentCount;
hostCommand.sendFragment.fragmentOffset = fragmentOffset;
hostCommand.sendFragment.totalLength = totalLength;
startCommand = enet_peer_queue_incoming_command (peer,
& hostCommand,
enet_packet_create (NULL, totalLength, ENET_PACKET_FLAG_RELIABLE),
fragmentCount);
}
else
if (totalLength != startCommand -> packet -> dataLength ||
fragmentCount != startCommand -> fragmentCount)
return;
if ((startCommand -> fragments [fragmentNumber / 32] & (1 << fragmentNumber)) == 0)
-- startCommand -> fragmentsRemaining;
startCommand -> fragments [fragmentNumber / 32] |= (1 << fragmentNumber);
if (fragmentOffset + fragmentLength > startCommand -> packet -> dataLength)
fragmentLength = startCommand -> packet -> dataLength - fragmentOffset;
memcpy (startCommand -> packet -> data + fragmentOffset,
(enet_uint8 *) command + sizeof (ENetProtocolSendFragment),
fragmentLength);
}