class.ilBMFTransport_TCP.php

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<?php
require_once dirname(__FILE__).'/../class.ilBMFBase.php';

class ilBMFTransport_TCP extends ilBMFBase_Object
{

    var $headers = array();
    var $urlparts = null;
    var $url = '';
    var $incoming_payload = '';
    var $_userAgent = SOAP_LIBRARY_NAME;
    var $encoding = SOAP_DEFAULT_ENCODING;
    var $result_encoding = 'UTF-8';
    var $result_content_type;

    var $socket = null;

    function ilBMFTransport_TCP($url, $encoding = SOAP_DEFAULT_ENCODING)
    {
        parent::ilBMFBase_Object('TCP');
        $this->urlparts = @parse_url($url);
        $this->url = $url;
        $this->encoding = $encoding;
    }

    function _socket_ping()
    {
        // XXX how do we restart after socket_shutdown?
        //if (!$this->socket) {
            // Create socket resource.
            $this->socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
            if ($this->socket < 0) {
                return 0;
            }

            // Connect.
            $result = socket_connect($this->socket, $this->urlparts['host'],
                                     $this->urlparts['port']);
            if ($result < 0) {
                return 0;
            }
        //}
        return 1;
    }

    function send($msg, $options = NULL)
    {
        $this->incoming_payload = '';
        $this->outgoing_payload = $msg;
        if (!$this->_validateUrl()) {
            return $this->fault;
        }

        // Check for TCP scheme.
        if (strcasecmp($this->urlparts['scheme'], 'TCP') == 0) {
            // Check connection.
            if (!$this->_socket_ping()) {
                return $this->_raiseSoapFault('Error connecting to ' . $this->url . '; reason: ' . socket_strerror(socket_last_error($this->socket)));
            }

            // Write to the socket.
            if (!@socket_write($this->socket, $this->outgoing_payload,
                               strlen($this->outgoing_payload))) {
                return $this->_raiseSoapFault('Error sending data to ' . $this->url . '; reason: ' . socket_strerror(socket_last_error($this->socket)));
            }

            // Shutdown writing.
            if(!socket_shutdown($this->socket, 1)) {
                return $this->_raiseSoapFault('Cannot change socket mode to read.');
            }

            // Read everything we can.
            while ($buf = @socket_read($this->socket, 1024, PHP_BINARY_READ)) {
                $this->incoming_payload .= $buf;
            }

            // Return payload or die.
            if ($this->incoming_payload) {
                return $this->incoming_payload;
            }

            return $this->_raiseSoapFault('Error reveiving data from ' . $this->url);
        }

        return $this->_raiseSoapFault('Invalid url scheme ' . $this->url);
    }

    function _validateUrl()
    {
        if (!is_array($this->urlparts) ) {
            $this->_raiseSoapFault("Unable to parse URL $url");
            return false;
        }
        if (!isset($this->urlparts['host'])) {
            $this->_raiseSoapFault("No host in URL $url");
            return false;
        }
        if (!isset($this->urlparts['path']) || !$this->urlparts['path']) {
            $this->urlparts['path'] = '/';
        }

        return true;
    }

}