Hi All,

I'm a relative newbie, but looking several samples I have a basic setup which is working, but now I'd like for the server to send a return code (ok/fail) to the client. However I can't get it working, the client get's stuck in the recv.

I believe I don't need forking, my use case is synchronous, I just want to send commands to a test machine and get a response, then send more commands, etc... (part of some testing automation framework)

I have the following code:

################## SERVER

    $OUTPUT_AUTOFLUSH=1;

    my $socket = new IO::Socket::INET (LocalHost => '0.0.0.0',
                                       LocalPort => $port,
                                       Proto => 'tcp',
                                       Listen => 1,
                                       Reuse => 1);
    die "Cannot create socket $!\n" unless $socket;

    # waiting for a new client connection
    $client_socket = $socket->accept();

    $stop_server = 0;
    
    while(!$stop_server)
    {
        $client_data = "";
        $client_socket->recv($client_data, 1024);

        # dispatch command
        my $ret = DispatchCommand($client_data);   

        # reply to client                          ###  ADD REPLY
        $client_socket->send($ret);                ###  ADD REPLY
    }
    $client_socket->close();
[download]

################## CLIENT

    $OUTPUT_AUTOFLUSH=1;
    my $socket = new IO::Socket::INET (PeerHost => 'my.domain.net',
                                   PeerPort => '8888',
                                   Proto => 'tcp',
                                   Reuse => 1);
    die "cannot connect to the server $!\n" unless $socket;

    while (1) {
    
        print "Command??? ";
        chomp ($cmd = <>);
 
        # data to send to a server
        $socket->send($cmd);

        # wait for server acknowledgement          ### GET REPLY
        $socket->recv($ack, 1024);                 ### GET REPLY
        print "response from server was $ack\n";   ### GET REPLY
    }
    $socket->close();
[download]

Without the ADD REPLY / GET REPLY, it works in the sense I can send my commands, but how do I get back to the client to tell it the return code?

Also, is there an easy way to get client's recv timeout after some set seconds? I've seen suggested I should use select, how would I use it this example?

Many thanks in advance.