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    stream_socket_shutdown

    (PHP 5 >= 5.2.1, PHP 7, PHP 8)

    stream_socket_shutdown — Cerrar una conexión full-duplex

    Descripción

    stream_socket_shutdown(resource $stream, int $how): bool

    Cierra (parcialmente o no) una conexión full-duplex.

    Nota:

    El búfer o búferes podrían o no estar vaciados.

    Parámetros

    stream

    Un flujo abierto (con stream_socket_client(), por ejemplo)

    how

    Una de las siguientes constantes: STREAM_SHUT_RD (deshabilita recepciones), STREAM_SHUT_WR (deshabilita transmisiones) o STREAM_SHUT_RDWR (deshabilita recepciones y transmisiones).

    Valores devueltos

    Devuelve true en caso de éxito o false en caso de error.

    Ejemplos

    Ejemplo #1 Un ejemplo de stream_socket_shutdown()

    <?php

    $servidor     = stream_socket_server('tcp://127.0.0.1:1337');
    $cliente = stream_socket_client('tcp://127.0.0.1:1337');

    var_dump(fputs($cliente, "hola"));

    stream_socket_shutdown($cliente, STREAM_SHUT_WR);
    var_dump(fputs($cliente, "hola")); // no funciona ahora

    ?>

    El resultado del ejemplo sería algo similar a:

    int(5)

Notice: fputs(): send of 5 bytes failed with errno=32 Broken pipe in test.php on line 9
int(0)

    Ver también

    • fclose() - Cierra un puntero a un archivo abierto

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    User Contributed Notes 3 notes

    up
    3
    Daniel J
    3 years ago
    Be wary of using stream_socket_shutdown with a TLS socket. The socket is closed without sending the "close_notify" message required by TLS protocol.

    To correctly close a TLS socket, use fclose() instead, which internally calls OpenSSL's SSL_shutdown() function.
    up
    1
    jgotti
    12 years ago
    Just a note to say that if you encounter problem closing some sockets using fclose in a multi client server, you should really give this one a try.

    Spent a full day trying to resolve this issue using stream_socket_shutdown($clientStream,STREAM_SHUT_RDWR);
    finally do the trick.
    up
    1
    Anonymous
    3 years ago
    As Daniel J has pointed out, stream_socket_shutdown doesn't send the TLS close_notify message. In some instances, it's a preferred function over fclose (to trigger stream_select, for example).

    To use this function correctly with TLS, use stream_socket_enable_crypto($fp, false); before shutting down the socket.
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