/** * called when the current net_message is from remote_address modifies net_message so that it * points to the packet payload ================= */ public static boolean Process(NetworkChannel chan, Buffer msg) { int sequence, sequence_ack; int reliable_ack, reliable_message; int qport; // get sequence numbers msg.reset(); sequence = msg.getInt(); sequence_ack = msg.getInt(); // read the qport if we are a server if (chan.sock == Constants.NS_SERVER) qport = msg.getShort(); // achtung unsigned int reliable_message = sequence >>> 31; reliable_ack = sequence_ack >>> 31; sequence &= ~(1 << 31); sequence_ack &= ~(1 << 31); if (showpackets.value != 0) { if (reliable_message != 0) Com.Printf( // "recv %4i : s=%i reliable=%i ack=%i rack=%i\n" "recv " + msg.cursize + " : s=" + sequence + " reliable=" + (chan.incoming_reliable_sequence ^ 1) + " ack=" + sequence_ack + " rack=" + reliable_ack + "\n"); else Com.Printf( // "recv %4i : s=%i ack=%i rack=%i\n" "recv " + msg.cursize + " : s=" + sequence + " ack=" + sequence_ack + " rack=" + reliable_ack + "\n"); } // // discard stale or duplicated packets // 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; } // // dropped packets don't keep the message from being used // 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 the current outgoing reliable message has been acknowledged // clear the buffer to make way for the next // if (reliable_ack == chan.reliable_sequence) chan.reliable_length = 0; // it has been received // // if this message contains a reliable message, bump // incoming_reliable_sequence // chan.incoming_sequence = sequence; chan.incoming_acknowledged = sequence_ack; chan.incoming_reliable_acknowledged = reliable_ack; if (reliable_message != 0) { chan.incoming_reliable_sequence ^= 1; } // // the message can now be read from the current message pointer // chan.last_received = (int) Globals.curtime; return true; }