stream_socket_accept

(PHP 5, PHP 7)

stream_socket_accept — Accept a connection on a socket created by stream_socket_server()

설명

resource stream_socket_accept ( resource $server_socket [, float $timeout = ini_get("default_socket_timeout") [, string &$peername ]] )

Accept a connection on a socket previously created by stream_socket_server().

인수

server_socket: The server socket to accept a connection from.
timeout: Override the default socket accept timeout. Time should be given in seconds.
peername: Will be set to the name (address) of the client which connected, if included and available from the selected transport.

Note:
Can also be determined later using stream_socket_get_name().

반환값

Returns a stream to the accepted socket connection실패 시 FALSE를 반환합니다.

주의

Warning

This function should not be used with UDP server sockets. Instead, use stream_socket_recvfrom() and stream_socket_sendto().

참고

stream_socket_server() - Create an Internet or Unix domain server socket
stream_socket_get_name() - Retrieve the name of the local or remote sockets
stream_set_blocking() - Set blocking/non-blocking mode on a stream
stream_set_timeout() - Set timeout period on a stream
fgets() - Gets line from file pointer
fgetss() - Gets line from file pointer and strip HTML tags
fwrite() - Binary-safe file write
fclose() - Closes an open file pointer
feof() - Tests for end-of-file on a file pointer
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User Contributed Notes 5 notes

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mickael dot bailly at free dot fr ¶

18 years ago


this function, compared to the function socket_accept, got an extra argument "timeout".
To make this function wait indefinitelly to incoming connections, just as in socket_accept, set timeout to -1. It works for me with PHP 5.0.4.

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Andy at txtNation dot com ¶

13 years ago


To check if there's a new connection waiting, without blocking, or (when using non-blocking mode) without notices), you can use stream_accept (as opposed to socket_select).

<?php

    class GenericClass {

        protected $resSocket=null;

        function acceptConnections() {

            # check that we still have a resource 
            
            if(is_resource($this->resSocket)) {
            
                $arrRead=array($this->resSocket);
                
                $arrWrite=array();
                
                /** @warning Passing $arrRead,$arrWrite by reference */
                if(stream_select($arrRead,$arrWrite,$arrWrite,0)) {
            
                    $resConnection=stream_socket_accept($this->resSocket,0);

                    # ... other stuff here
                }
            }
        }
    }
?>

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leleu256NOSPAM at hotmail dot com ¶

20 years ago


This code could be very helpfull...

The following code is for the "server". It listen for a message until CTRL-C

<?php
while (true)
{
// disconnected every 5 seconds...
receive_message('127.0.0.1','85',5);
}

function receive_message($ipServer,$portNumber,$nbSecondsIdle)
{
  // creating the socket...
  $socket = stream_socket_server('tcp://'.$ipServer.':'.$portNumber, $errno, $errstr);
  if (!$socket)
  {
    echo "$errstr ($errno)<br />\n";
  }
  else
   {
    // while there is connection, i'll receive it... if I didn't receive a message within $nbSecondsIdle seconds, the following function will stop.
    while ($conn = @stream_socket_accept($socket,$nbSecondsIdle))
    {
     $message= fread($conn, 1024);
     echo 'I have received that : '.$message;
     fputs ($conn, "OK\n");
     fclose ($conn);
    }
    fclose($socket);
  }
}
?>

The following code is for the "client". It send a message, and read the respons...

<?php

send_message('127.0.0.1','85','Message to send...');

function send_message($ipServer,$portServer,$message)
{
  $fp = stream_socket_client("tcp://$ipServer:$portServer", $errno, $errstr);
  if (!$fp)
  {
     echo "ERREUR : $errno - $errstr<br />\n";
  }
  else
  {
     fwrite($fp,"$message\n");
     $response =  fread($fp, 4);
     if ($response != "OK\n")
        {echo 'The command couldn\'t be executed...\ncause :'.$response;}
     else
        {echo 'Execution successfull...';}
     fclose($fp);
  }
}
?>

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Alex Nordenheim ¶

10 years ago


Note that if you use 0 as timeout, the connection will timeout right away.

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fred dot hakeem dot smith at muslimamerica dot bob dot net ¶

16 years ago


To whom it may concern, and it may concern you greatly, stream_set_blocking has no effect on stream_socket_accept.
If you want it to return right away, connection or not, use 0 for the timeout parameter.

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