static int php_sockop_set_option(php_stream *stream, int option, int value, void *ptrparam)
{
	int oldmode, flags;
	php_netstream_data_t *sock = (php_netstream_data_t*)stream->abstract;
	php_stream_xport_param *xparam;

	if (!sock) {
		return PHP_STREAM_OPTION_RETURN_NOTIMPL;
	}

	switch(option) {
		case PHP_STREAM_OPTION_CHECK_LIVENESS:
			{
				struct timeval tv;
				char buf;
				int alive = 1;

				if (value == -1) {
					if (sock->timeout.tv_sec == -1) {
						tv.tv_sec = FG(default_socket_timeout);
						tv.tv_usec = 0;
					} else {
						tv = sock->timeout;
					}
				} else {
					tv.tv_sec = value;
					tv.tv_usec = 0;
				}

				if (sock->socket == -1) {
					alive = 0;
				} else if (php_pollfd_for(sock->socket, PHP_POLLREADABLE|POLLPRI, &tv) > 0) {
#ifdef PHP_WIN32
					int ret;
#else
					ssize_t ret;
#endif
					int err;

					ret = recv(sock->socket, &buf, sizeof(buf), MSG_PEEK);
					err = php_socket_errno();
					if (0 == ret || /* the counterpart did properly shutdown*/
						(0 > ret && err != EWOULDBLOCK && err != EAGAIN && err != EMSGSIZE)) { /* there was an unrecoverable error */
						alive = 0;
					}
				}
				return alive ? PHP_STREAM_OPTION_RETURN_OK : PHP_STREAM_OPTION_RETURN_ERR;
			}

		case PHP_STREAM_OPTION_BLOCKING:
			oldmode = sock->is_blocked;
			if (SUCCESS == php_set_sock_blocking(sock->socket, value)) {
				sock->is_blocked = value;
				return oldmode;
			}
			return PHP_STREAM_OPTION_RETURN_ERR;

		case PHP_STREAM_OPTION_READ_TIMEOUT:
			sock->timeout = *(struct timeval*)ptrparam;
			sock->timeout_event = 0;
			return PHP_STREAM_OPTION_RETURN_OK;

		case PHP_STREAM_OPTION_META_DATA_API:
			add_assoc_bool((zval *)ptrparam, "timed_out", sock->timeout_event);
			add_assoc_bool((zval *)ptrparam, "blocked", sock->is_blocked);
			add_assoc_bool((zval *)ptrparam, "eof", stream->eof);
			return PHP_STREAM_OPTION_RETURN_OK;

		case PHP_STREAM_OPTION_XPORT_API:
			xparam = (php_stream_xport_param *)ptrparam;

			switch (xparam->op) {
				case STREAM_XPORT_OP_LISTEN:
					xparam->outputs.returncode = (listen(sock->socket, xparam->inputs.backlog) == 0) ?  0: -1;
					return PHP_STREAM_OPTION_RETURN_OK;

				case STREAM_XPORT_OP_GET_NAME:
					xparam->outputs.returncode = php_network_get_sock_name(sock->socket,
							xparam->want_textaddr ? &xparam->outputs.textaddr : NULL,
							xparam->want_addr ? &xparam->outputs.addr : NULL,
							xparam->want_addr ? &xparam->outputs.addrlen : NULL
							);
					return PHP_STREAM_OPTION_RETURN_OK;

				case STREAM_XPORT_OP_GET_PEER_NAME:
					xparam->outputs.returncode = php_network_get_peer_name(sock->socket,
							xparam->want_textaddr ? &xparam->outputs.textaddr : NULL,
							xparam->want_addr ? &xparam->outputs.addr : NULL,
							xparam->want_addr ? &xparam->outputs.addrlen : NULL
							);
					return PHP_STREAM_OPTION_RETURN_OK;

				case STREAM_XPORT_OP_SEND:
					flags = 0;
					if ((xparam->inputs.flags & STREAM_OOB) == STREAM_OOB) {
						flags |= MSG_OOB;
					}
					xparam->outputs.returncode = sock_sendto(sock,
							xparam->inputs.buf, xparam->inputs.buflen,
							flags,
							xparam->inputs.addr,
							xparam->inputs.addrlen);
					if (xparam->outputs.returncode == -1) {
						char *err = php_socket_strerror(php_socket_errno(), NULL, 0);
						php_error_docref(NULL, E_WARNING,
						   	"%s\n", err);
						efree(err);
					}
					return PHP_STREAM_OPTION_RETURN_OK;

				case STREAM_XPORT_OP_RECV:
					flags = 0;
					if ((xparam->inputs.flags & STREAM_OOB) == STREAM_OOB) {
						flags |= MSG_OOB;
					}
					if ((xparam->inputs.flags & STREAM_PEEK) == STREAM_PEEK) {
						flags |= MSG_PEEK;
					}
					xparam->outputs.returncode = sock_recvfrom(sock,
							xparam->inputs.buf, xparam->inputs.buflen,
							flags,
							xparam->want_textaddr ? &xparam->outputs.textaddr : NULL,
							xparam->want_addr ? &xparam->outputs.addr : NULL,
							xparam->want_addr ? &xparam->outputs.addrlen : NULL
							);
					return PHP_STREAM_OPTION_RETURN_OK;


#ifdef HAVE_SHUTDOWN
# ifndef SHUT_RD
#  define SHUT_RD 0
# endif
# ifndef SHUT_WR
#  define SHUT_WR 1
# endif
# ifndef SHUT_RDWR
#  define SHUT_RDWR 2
# endif
				case STREAM_XPORT_OP_SHUTDOWN: {
					static const int shutdown_how[] = {SHUT_RD, SHUT_WR, SHUT_RDWR};

					xparam->outputs.returncode = shutdown(sock->socket, shutdown_how[xparam->how]);
					return PHP_STREAM_OPTION_RETURN_OK;
				}
#endif

				default:
					return PHP_STREAM_OPTION_RETURN_NOTIMPL;
			}

		default:
			return PHP_STREAM_OPTION_RETURN_NOTIMPL;
	}
}