Php WebSocket Handshake - php

Question

I create a secure websocket server with stream_socket_server.
And i'd like to have a function accept that sequencially get the connections and do the handshake as a blocking access. With chrome, it connects and deconnects and with Firefox it tells me that there's an error with fread.
The snippet is :
$write = null;
$except = null;
$sockets = $this->socket;
#stream_select( $sockets, $write, $except, 0 );
foreach( $sockets as $socket ) {
$resource = #stream_socket_accept( $socket );
if (!$resource) {
return false;
}
$accepts = array( $resource );
#stream_select( $accepts, $write, $except, 0, 1000 );
foreach( $accepts as $accepted ) {
$buffer = '';
$bytes_to_read = 8192;
while ( $chunk = fread( $accepted, $bytes_to_read ) ) {
$buffer .= $chunk;
$status = stream_get_meta_data( $accepted );
$bytes_to_read = $status[ "unread_bytes" ];
if ( strlen( $buffer ) === 1 )
$bytes_to_read = 8192;
}
$response = HandShake::perform( $buffer );
$responseLength = strlen( $response );
for( $written = 0; $written < $responseLength; $written += $fwrite ) {
$fwrite = fwrite( $accepted, substr( $response, $written ) );
if ( ( $fwrite === false ) || ( $fwrite === 0 ) ) {
stream_socket_shutdown( $accepted, STREAM_SHUT_RDWR );
return false;
}
}
}
}
Can you tell me why it doesn't work and transform my snippet ?