19 replies to this topic

[killcode]

So i was thinking of geting into php sockets, and i have 1 small problem...I cant seem to bind, i think its something to do with my PORT, becouse what i did is i echo $_SERVER['REMOTE_PORT'] so i could get the port, but everytime i refresh the page it changes -_-, any way heres the source code:

<?php


echo $_SERVER['REMOTE_PORT'];


// vars

  $host = "192.168.1.2";

  $port = "8080";

// dont time out

  set_time_limit(0);

// create socket

  $socket = socket_create(AF_INET,SOCK_STREAM,0) or die ("Could no create socket");

      

// bind socket to port

  $result = socket_bind($socket,$host,$port) or die ("Could not bind socket");

  

// start listening for connections 

  $result = socket_listen($socket,3) or ("Could not set up socket listener");  

  

// accept incoming connections 

// spawn another socket to handle communucation

 $spawn = socket_accept($socket) or die("Could not accept incoming connection");

 

// read clients 

 $input = socket_read($spawn,1024);  

 

// reverse client input and send back

 $output = strrev($input);

 

 socket_write($spawn,$output,strlen($output)) or die("could not write output");  

 

 socket_close($spawn);

 socket_close($socket);



?>

so yeah... when i load the page it gives me this error: Warning: socket_bind() [function.socket-bind]: unable to bind address [0]: Only one usage of each socket address (protocol/network address/port) is normally permitted. in C:\xampp\htdocs\sites\sockets\index.php on line 14
Could not bind socket

So yeah, i think its something todo with the port idk, please help :)

Edited by WingedPanther, 20 March 2009 - 01:33 PM.
add code tags (the PHP sheet)

[killcode]

Oh, that port (8080),is just a random number i used, dont ask why...what i did, was, i got the port from when i echo $_SERVER['SERVER_REMOTE'] and used it...

So your saying i just need to add a random port number, then it should work?

[killcode]

Nope still not working :(, tried diffrent ports, still giving me the same error

[killcode]

Anyone? :(

[Orjan]

an idea worth testing. Do you have a personal firewall that blocks php:s access to open a socket?

[John]

Rather than 192.168.1.2 try 127.0.0.1

[killcode]

Hmmm...i tried 127.0.0.1, no luck with that...and no, im not behind a firewall either :(

[killcode]

So jordan, did you get to test it out?

[John]

To bind to certain ports you may need to be an administrator, so make sure you are not binding to a restricted port. I am not sure the range or even if it applies under Windows, but under Ubuntu I've needed root privileges to bind to certain ports. It's worth a shot.