Method SendPacket

src/engine/shared/network.cpp:172–249

}

void CNetBase::SendPacket(NETSOCKET Socket, NETADDR *pAddr, CNetPacketConstruct *pPacket, SECURITY_TOKEN SecurityToken, bool Sixup)
{
	dbg_assert(IsValidConnectionOrientedPacket(pPacket), "Invalid packet to send. Flags=%d Ack=%d NumChunks=%d Size=%d",
		pPacket->m_Flags, pPacket->m_Ack, pPacket->m_NumChunks, pPacket->m_DataSize);
	dbg_assert((pPacket->m_Flags & NET_PACKETFLAG_COMPRESSION) == 0, "Do not set NET_PACKETFLAG_COMPRESSION, it will be set automatically when appropriate");

	unsigned char aBuffer[NET_MAX_PACKETSIZE];

	// log the data
	if(ms_DataLogSent)
	{
		int Type = 1;
		io_write(ms_DataLogSent, &Type, sizeof(Type));
		io_write(ms_DataLogSent, &pPacket->m_DataSize, sizeof(pPacket->m_DataSize));
		io_write(ms_DataLogSent, &pPacket->m_aChunkData, pPacket->m_DataSize);
		io_flush(ms_DataLogSent);
	}

	int HeaderSize = NET_PACKETHEADERSIZE;
	if(Sixup)
	{
		HeaderSize += sizeof(SecurityToken);
		WriteSecurityToken(aBuffer + 3, SecurityToken);
	}
	else if(SecurityToken != NET_SECURITY_TOKEN_UNSUPPORTED)
	{
		// append security token
		// if SecurityToken is NET_SECURITY_TOKEN_UNKNOWN we will still append it hoping to negotiate it
		WriteSecurityToken(pPacket->m_aChunkData + pPacket->m_DataSize, SecurityToken);
		pPacket->m_DataSize += sizeof(SecurityToken);
	}

	// only compress non-control packets
	int CompressedSize = -1;
	if((pPacket->m_Flags & NET_PACKETFLAG_CONTROL) == 0)
	{
		CompressedSize = ms_Huffman.Compress(pPacket->m_aChunkData, pPacket->m_DataSize, &aBuffer[HeaderSize], NET_MAX_PACKETSIZE - HeaderSize);
	}

	// check if the compression was enabled, successful and good enough
	int FinalSize;
	if(CompressedSize > 0 && CompressedSize < pPacket->m_DataSize)
	{
		FinalSize = CompressedSize;
		pPacket->m_Flags |= NET_PACKETFLAG_COMPRESSION;
	}
	else
	{
		// use uncompressed data
		FinalSize = pPacket->m_DataSize;
		mem_copy(&aBuffer[HeaderSize], pPacket->m_aChunkData, pPacket->m_DataSize);
	}

	if(Sixup)
	{
		pPacket->m_Flags = PacketFlags_SixToSeven(pPacket->m_Flags);
	}