/** Sends an out-of-band datagram */
public static void Netchan_OutOfBand(
int net_socket, NetworkAddress adr, int length, byte data[]) {
// write the packet header
Buffer send = Buffer.allocate(Constants.MAX_MSGLEN);
send.putInt(-1); // -1 sequence means out of band
Buffers.Write(send, data, length);
// send the datagram
NET.SendPacket(net_socket, send.cursize, send.data, adr);
}
/**
* tries to send an unreliable message to a connection, and handles the transmition /
* retransmition of the reliable messages.
*
* <p>A 0 length will still generate a packet and deal with the reliable messages.
*/
public static void Transmit(NetworkChannel chan, int length, byte data[]) {
int send_reliable;
int w1, w2;
// check for message overflow
if (chan.message.overflowed) {
chan.fatal_error = true;
Com.Printf(NET.AdrToString(chan.remote_address) + ":Outgoing message overflow\n");
return;
}
send_reliable = chan.Netchan_NeedReliable() ? 1 : 0;
if (chan.reliable_length == 0 && chan.message.cursize != 0) {
System.arraycopy(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;
}
// write the packet header
Buffer send = Buffer.wrap(send_buf).order(ByteOrder.LITTLE_ENDIAN);
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;
send.putInt(w1);
send.putInt(w2);
// send the qport if we are a client
if (chan.sock == Constants.NS_CLIENT) send.WriteShort((int) consoleQport.value);
// copy the reliable message to the packet first
if (send_reliable != 0) {
Buffers.Write(send, chan.reliable_buf, chan.reliable_length);
chan.last_reliable_sequence = chan.outgoing_sequence;
}
// add the unreliable part if space is available
if (send.maxsize - send.cursize >= length) Buffers.Write(send, data, length);
else Com.Printf("Netchan_Transmit: dumped unreliable\n");
// send the datagram
NET.SendPacket(chan.sock, send.cursize, send.data, chan.remote_address);
if (showpackets.value != 0) {
if (send_reliable != 0)
Com.Printf(
// "send %4i : s=%i reliable=%i ack=%i rack=%i\n"
"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 %4i : s=%i ack=%i rack=%i\n"
"send "
+ send.cursize
+ " : s="
+ (chan.outgoing_sequence - 1)
+ " ack="
+ chan.incoming_sequence
+ " rack="
+ chan.incoming_reliable_sequence
+ "\n");
}
}