Failed to connect WebSocket php - javascript

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Failed to connect WebSocket php - javascript

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#1 by (1 votes)

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I am practicing webSocket and I try to connect php with javascript - html5 to be able to later make a chat, so I have the following in servidor.php .

$host="127.0.0.1";
$port="3333";
$socket= socket_create(AF_INET,SOCK_STREAM,0);
socket_bind($socket,$host,$port) or die("error al vincular socket en el cliente");
echo socket_strerror(socket_last_error());
socket_listen($socket);
$i=0;
while(true){
    $client[$i++]=socket_accept($socket);
    $menssage=socket_read($client[$i], 1024);
    echo $menssage;
    $menssage="Hola".$menssage."\n";

    socket_write($client[$i], $menssage."\n\r",1024);
    socket_close($client[$i]);
}
socket_close($socket);

And I make a request from my client in the following way:

    $("#conectar").click(function(){
        token=document.querySelector('meta[name="csrf-token"]').getAttribute('content');
        conectar(token)
    });
    function conectar(tokenuser){
        loadDoc("ws://127.0.0.1:3333",tokenuser, myFunction);
    }
    function loadDoc(url,clave ,cFunction) {
        if ("WebSocket" in window) {
            var ws = new WebSocket(url);
            ws.onopen = function (clave) {
                ws.send(clave);
            };
            ws.onerror = function (error) {
                console.log('WebSocket Error');
            };
            ws.onmessage = function (evt) {
                cFunction(evt.data);
            };
            ws.onclose = function () {
                console.log("el WS fue cerrado");
            };
        }else{
            console.log("descargue chrome");
        }
    }
    function myFunction(resultado) {
        console.log(resultado);
    }

Once encoded, I execute the service:

C:\Users\minombre>php -f C:\xampp\htdocs\webSocket\servidor.php
La operacin se complet correctamente.

And all right up there, but once I press Connect I get an error at the server side:

PHP Notice: Undefined offset: 1 in C: \ xampp \ htdocs \ webSocket \ server.php on line 12

Notice: Undefined offset: 1 in C: \ xampp \ htdocs \ webSocket \ server.php on line 12   PHP Warning: socket_read () expects parameter 1 to be resource, null given in C: \ xampp \ htdocs \ webSocket \ server.php on line 12

Warning: socket_read () expects parameter 1 to be resource, null given in C: \ xampp \ htdocs \ webSocket \ server.php on line 12   PHP Notice: Undefined offset: 1 in C: \ xampp \ htdocs \ webSocket \ server.php on line 16

Notice: Undefined offset: 1 in C: \ xampp \ htdocs \ webSocket \ server.php on line 16   PHP Warning: socket_write () expects parameter 1 to be resource, null given in C: \ xampp \ htdocs \ webSocket \ server.php on line 16

Warning: socket_write () expects parameter 1 to be resource, null given in C: \ xampp \ htdocs \ webSocket \ server.php on line 16   PHP Notice: Undefined offset: 1 in C: \ xampp \ htdocs \ webSocket \ server.php on line 17

Notice: Undefined offset: 1 in C: \ xampp \ htdocs \ webSocket \ server.php on line 17   PHP Warning: socket_close () expects parameter 1 to be resource, null given in C: \ xampp \ htdocs \ webSocket \ server.php on line 17

Warning: socket_close () expects parameter 1 to be resource, null given in C: \ xampp \ htdocs \ webSocket \ server.php on line 17

I do not know what I did wrong, if someone could help me, I would really appreciate it.

javascript html5 php websocket

asked by Shassain 29.09.2018 в 23:28

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1 answer

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score 1 · Accepted Answer

Without trying it, I would say that your problem is here:

$i = 0;
$client[$i++] = ...

There you start with $i === 0 , and then you increment , with which $i goes to be worth 1 . Then, when you do

socket_write( $client[$i], ...
socket_close( $client[$i] );

You are actually accessing with $i === 1 , that you do not have it defined within the array .

The simplest solution: increase $i at the end of the loop:

while( true ) {
  $client[$i] = socket_accept( $socket );
//          ^-- CAMBIA ESTO
  $menssage = socket_read( $client[$i], 1024 );
  echo $menssage;
  $menssage = "Hola" . $menssage . "\n";

  socket_write( $client[$i], $menssage . "\n\r", 1024 );
  socket_close( $client[$i] );
  ++$i; // <-- AQUÍ
}