Client/server with sockets - JavaTech: An Introduction to Scientific and Technical Computing with Java - page 467

} // doConnection
/**
* Here is a homemade login protocol. A password
* exchange could also be added.
**/
boolean login() {
fDataClient.println ("Waiting for login prompt...");
String msg - line = readNetInputLine ();
if (msg - line == null) return false;
fDataClient.println (msg - line);
if (!msg - line.startsWith ("Username:")) return false;
fDataClient.println ("Send username " +fUserName);
try {
writeNetOutputLine (fUserName);
}
catch (IOException e) {
return false;
}
catch (Exception e) {
fDataClient.println ( " Error occurred in sending
username! " );
return false;
}
fDataClient.println ("Waiting for response...");
msg - line = readNetInputLine ();
if (msg - line == null) return false;
fDataClient.println (msg - line);
return true;
} // login
/** Do all of the steps needed to stop the
* connection. **/
public void finish () {
// Kill the thread and stop the server
fKeepRunning = false;
closeServer ();
} // finish
/** Close the socket to the server. **/
void closeServer () {
if (fServer == null) return;