Function PreGet

source/common/engine/i_net.cpp:361–394

}

sockaddr_in *PreGet (void *buffer, int bufferlen, bool noabort)
{
	static sockaddr_in fromaddress;
	socklen_t fromlen;
	int c;

	fromlen = sizeof(fromaddress);
	c = recvfrom (mysocket, (char *)buffer, bufferlen, 0,
		(sockaddr *)&fromaddress, &fromlen);

	if (c == SOCKET_ERROR)
	{
		int err = WSAGetLastError();
		if (err == WSAEWOULDBLOCK || (noabort && err == WSAECONNRESET))
			return NULL;	// no packet

		if (doomcom.consoleplayer == 0)
		{
			int node = FindNode(&fromaddress);
			I_NetMessage("Got unexpected disconnect.");
			doomcom.numnodes--;
			for (; node < doomcom.numnodes; ++node)
				sendaddress[node] = sendaddress[node + 1];

			// Let remaining guests know that somebody left.
			SendConAck(doomcom.numnodes, doomcom.numplayers);
		}
		else
		{
			I_NetError("The host disbanded the game unexpectedly");
		}
	}
	return &fromaddress;
}

void PreSend (const void *buffer, int bufferlen, const sockaddr_in *to)
{