Function PacketSend

source/common/engine/i_net.cpp:224–271

PacketSend

// PacketSend
//
void PacketSend (void)
{
	int c;

	// FIXME: Catch this before we've overflown the buffer. With long chat
	// text and lots of backup tics, it could conceivably happen. (Though
	// apparently it hasn't yet, which is good.)
	if (doomcom.datalength > MAX_MSGLEN)
	{
		I_FatalError("Netbuffer overflow!");
	}
	assert(!(doomcom.data[0] & NCMD_COMPRESSED));

	uLong size = TRANSMIT_SIZE - 1;
	if (doomcom.datalength >= 10)
	{
		TransmitBuffer[0] = doomcom.data[0] | NCMD_COMPRESSED;
		c = compress2(TransmitBuffer + 1, &size, doomcom.data + 1, doomcom.datalength - 1, 9);
		size += 1;
	}
	else
	{
		c = -1;	// Just some random error code to avoid sending the compressed buffer.
	}
	if (c == Z_OK && size < (uLong)doomcom.datalength)
	{
//		Printf("send %lu/%d\n", size, doomcom.datalength);
		c = sendto(mysocket, (char *)TransmitBuffer, size,
			0, (sockaddr *)&sendaddress[doomcom.remotenode],
			sizeof(sendaddress[doomcom.remotenode]));
	}
	else
	{
		if (doomcom.datalength > TRANSMIT_SIZE)
		{
			I_Error("Net compression failed (zlib error %d)", c);
		}
		else
		{
//			Printf("send %d\n", doomcom.datalength);
			c = sendto(mysocket, (char *)doomcom.data, doomcom.datalength,
				0, (sockaddr *)&sendaddress[doomcom.remotenode],
				sizeof(sendaddress[doomcom.remotenode]));
		}
	}
	//	if (c == -1)
	//			I_Error ("SendPacket error: %s",strerror(errno));
}

void PreSend(const void* buffer, int bufferlen, const sockaddr_in* to);
void SendConAck(int num_connected, int num_needed);