getStreamContext example

        // If the URI should be accessed via SSL, prepend the Hostname with ssl://         $host = ($secure ? $this->config['ssltransport'] : 'tcp') . '://' . $host;

        // If we are connected to the wrong host, disconnect first         if (($this->connected_to[0] != $host || $this->connected_to[1] != $port)) {
            if (is_resource($this->socket)) $this->close();
        }

        // Now, if we are not connected, connect         if (! is_resource($this->socket) || ! $this->config['keepalive']) {
            $context = $this->getStreamContext();
            if ($secure || $this->config['sslusecontext']) {
                if ($this->config['sslcert'] !== null) {
                    if (! stream_context_set_option($context, 'ssl', 'local_cert',
                                                    $this->config['sslcert'])) {
                        throw new Zend_Http_Client_Adapter_Exception('Unable to set sslcert option');
                    }
                }
                if ($this->config['sslpassphrase'] !== null) {
                    if (! stream_context_set_option($context, 'ssl', 'passphrase',
                                                    $this->config['sslpassphrase'])) {
                        throw new Zend_Http_Client_Adapter_Exception('Unable to set sslpassphrase option');
                    }