public static bool Process(netchan_t chan, sizebuf_t msg)
{
MSG.BeginReading(msg);
int sequence = MSG.ReadLong(msg);
int sequence_ack = MSG.ReadLong(msg);
if (chan.sock == Defines.NS_SERVER)
{
MSG.ReadShort(msg);
}
int reliable_message = sequence >> 31;
int reliable_ack = sequence_ack >> 31;
sequence &= ~(1 << 31);
sequence_ack &= ~(1 << 31);
if (showpackets.value != 0)
{
if (reliable_message != 0)
{
Com.Printf("recv " + msg.cursize + " : s=" + sequence + " reliable=" + (chan.incoming_reliable_sequence ^ 1) + " ack=" + sequence_ack + " rack=" + reliable_ack + "\\n");
}
else
{
Com.Printf("recv " + msg.cursize + " : s=" + sequence + " ack=" + sequence_ack + " rack=" + reliable_ack + "\\n");
}
}
if (sequence <= chan.incoming_sequence)
{
if (showdrop.value != 0)
{
Com.Printf(NET.AdrToString(chan.remote_address) + ":Out of order packet " + sequence + " at " + chan.incoming_sequence + "\\n");
}
return(false);
}
chan.dropped = sequence - (chan.incoming_sequence + 1);
if (chan.dropped > 0)
{
if (showdrop.value != 0)
{
Com.Printf(NET.AdrToString(chan.remote_address) + ":Dropped " + chan.dropped + " packets at " + sequence + "\\n");
}
}
if (reliable_ack == chan.reliable_sequence)
{
chan.reliable_length = 0;
}
chan.incoming_sequence = sequence;
chan.incoming_acknowledged = sequence_ack;
chan.incoming_reliable_acknowledged = reliable_ack;
if (reliable_message != 0)
{
chan.incoming_reliable_sequence ^= 1;
}
chan.last_received = (int)Globals.curtime;
return(true);
}
public static void Transmit(netchan_t chan, int length, byte[] data)
{
int send_reliable;
int w1, w2;
if (chan.message.overflowed)
{
chan.fatal_error = true;
Com.Printf(NET.AdrToString(chan.remote_address) + ":Outgoing message overflow\\n");
return;
}
send_reliable = Netchan_NeedReliable(chan) ? 1 : 0;
if (chan.reliable_length == 0 && chan.message.cursize != 0)
{
System.Array.Copy(chan.message_buf, 0, chan.reliable_buf, 0, chan.message.cursize);
chan.reliable_length = chan.message.cursize;
chan.message.cursize = 0;
chan.reliable_sequence ^= 1;
}
SZ.Init(send, send_buf, send_buf.Length);
w1 = (chan.outgoing_sequence & ~(1 << 31)) | (send_reliable << 31);
w2 = (chan.incoming_sequence & ~(1 << 31)) | (chan.incoming_reliable_sequence << 31);
chan.outgoing_sequence++;
chan.last_sent = (int)Globals.curtime;
MSG.WriteInt(send, w1);
MSG.WriteInt(send, w2);
if (chan.sock == Defines.NS_CLIENT)
{
MSG.WriteShort(send, (int)qport.value);
}
if (send_reliable != 0)
{
SZ.Write(send, chan.reliable_buf, chan.reliable_length);
chan.last_reliable_sequence = chan.outgoing_sequence;
}
if (send.maxsize - send.cursize >= length)
{
SZ.Write(send, data, length);
}
else
{
Com.Printf("Netchan_Transmit: dumped unreliable\\n");
}
NET.SendPacket(chan.sock, send.cursize, send.data, chan.remote_address);
if (showpackets.value != 0)
{
if (send_reliable != 0)
{
Com.Printf("send " + send.cursize + " : s=" + (chan.outgoing_sequence - 1) + " reliable=" + chan.reliable_sequence + " ack=" + chan.incoming_sequence + " rack=" + chan.incoming_reliable_sequence + "\\n");
}
else
{
Com.Printf("send " + send.cursize + " : s=" + (chan.outgoing_sequence - 1) + " ack=" + chan.incoming_sequence + " rack=" + chan.incoming_reliable_sequence + "\\n");
}
}
}
public static bool Netchan_CanReliable(netchan_t chan)
{
if (chan.reliable_length != 0)
{
return(false);
}
return(true);
}
public static void Setup(int sock, netchan_t chan, netadr_t adr, int qport)
{
chan.Clear();
chan.sock = sock;
chan.remote_address.Set(adr);
chan.qport = qport;
chan.last_received = Globals.curtime;
chan.incoming_sequence = 0;
chan.outgoing_sequence = 1;
SZ.Init(chan.message, chan.message_buf, chan.message_buf.Length);
chan.message.allowoverflow = true;
}
public static bool Netchan_NeedReliable(netchan_t chan)
{
bool send_reliable;
send_reliable = false;
if (chan.incoming_acknowledged > chan.last_reliable_sequence && chan.incoming_reliable_acknowledged != chan.reliable_sequence)
{
send_reliable = true;
}
if (0 == chan.reliable_length && chan.message.cursize != 0)
{
send_reliable = true;
}
return(send_reliable);
}
