ZMQ CANNOT BIND, ADDRESS ALREADY IN USE

[Winnie Nakimuli]

hallo,thank you so much for the continous support you offer to us, and the patience

Now am trying to run a simple application using ratchet and ZMQ after following the push tutorial but this is the error am getting

 'ZMQSocketException' with message 'Failed to bind the ZMQ: Address already in use' in /opt/lampp/htdocs/vendor/react/zmq/src/React/ZMQ/SocketWrapper.php:114,and when i change the port number, from 5555 to something else the error is nolonger there though now i get another error,  Uncaught exception 'React\Socket\ConnectionException' with message 'Could not bind to tcp://0.0.0.0:8080: Address already in use'

and when i run netstat -ap | grep tcp, it's only php listening on port 5555, so do i kill this process first before binding not sure of what to do???

[Igor Wiedler]

Hi,

You can't have multiple scripts binding to the same port at the same time. Either change the port numbers of the second script or kill the first script before you run the second.

Regards,

Igor

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[Winnie Nakimuli]

Hi, thank you for your response.Am trying to use the post method to capture some information from the client and the post script is supposed to be connecting to the push-server script to be able to push the result to all connected clients , but it gives the error above.

Not sure what the problem is, because to kill the process i will be killing the php script that is running the server

my post script is given below

header('Access-Control-Allow-Origin: *');

require ("/opt/lampp/htdocs/bin/push-server.php");

 $min = $_POST['min'];

 $max = $_POST['max'];

  

 $entryData= mt_rand( $min,$max);

    

 $loop = React\EventLoop\Factory::create();

    $context = new React\ZMQ\Context($loop);

    $socket = $context->getSocket(ZMQ::SOCKET_PUSH, 'my pusher');

    $socket->connect("tcp://localhost:5555");

   $socket->send(json_encode($entryData));

Thank you

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[Winnie Nakimuli]

Thank you so much for the continuous support, i noticed my mistake that was in the require ("/opt/lampp/htdocs/bin/push-server.php"); so now everything is fine.

Thank you so much for this great library it has so helpful in my Class project, despite me being new at programming i was able to follow through with a few challenges here and there but at the end it works like a charm.

So, thank you am definitely spreading the news.