/**
* Accept a connection on a socket
*
* <p>Needs to trigger sending an ACK
*
* @return TCPSock The first established connection on the request queue remove from welcomeQueue
* adds recvSocket to socketSpace sends Ack
*/
public TCPSock accept() {
aa(this, this.sockType == SocketType.WELCOME, "accept() called by non-welcome socket");
aa(this, this.state == State.LISTEN, "accept() called when not listening");
if (welcomeQueue.isEmpty()) return null;
p(this, 3, "accept()");
TCPSock recvSock = welcomeQueue.remove(0);
recvSock.state = State.ESTABLISHED;
p(recvSock, 4, "established");
tcpMan.add(recvSock.tsid, recvSock);
tcpMan.sendACK(recvSock.tsid);
return recvSock;
}
/**
* Initiate connection to a remote socket
*
* @param destAddr int Destination node address
* @param destPort int Destination port
* @return int 0 on success, -1 otherwise
*/
public int connect(int destAddr, int destPort) {
// if not starting from a closed state, connect should fail.
if (!isClosed() || !isSender()) {
pe(this, " connect() called on inappropriated");
return -1;
}
p(this, 3, "Connect() to: " + destAddr + ":" + destPort);
this.tsid.remoteAddr = destAddr;
this.tsid.remotePort = destPort;
tcpMan.add(this.tsid, this);
tcpMan.sendSYN(this.tsid);
this.state = State.SYN_SENT;
return 0;
}
