Added first version of client part of module

larvitsmpp.js

@@ -12,8 +12,6 @@ var log   = require('winston'),
 /**
  * Set up SMPP server
  *
- * The option "checkUserAndPass" should be a function, taking three parameters: username, password and callback(err)
- *
  * @param obj options
  *                   * port - what port to bind to, defaults to 2775
  *                   * checkUserAndPass - to require username and password to bind
@@ -122,11 +120,101 @@ exports.server = function(options) {
 		});
 
 		smppSession.on('enquire_link', function(pdu) {
+			var sendRet;
+
 			log.silly('larvitsmpp: server() - Enquire_link - client heart beat.');
 
-			smppSession.send(pdu.response({
+			sendRet = smppSession.send(pdu.response({
 				'command_status': smpp.ESME_ROK
 			}));
+
+			if ( ! sendRet) {
+				// No writeable socket, do something!
+			}
+
 		});
 	}).listen(options.port);
+};
+
+/**
+ * Connect as a client to an SMPP server
+ *
+ * @param obj options
+ *                   * host (default 127.0.0.1)
+ *                   * port (default 2775)
+ *                   * username (default false)
+ *                   * password (default false)
+ *                   * mode (default 'transceiver', other options: 'receiver', 'transmitter')
+ *                   * heartbeat - set the heartbeat interval (default 10000)
+ * @param func callback(err, returnObj)
+ */
+exports.client = function(options, callback) {
+	var smppSession,
+	    heartbeatTimer,
+	    err,
+	    returnObj   = {'smppSession': smppSession},
+	    bindOptions = {};
+
+	function heartbeat() {
+		log.silly('larvitsmpp: client() - heartbeat() - called');
+
+		smppSession.enquire_link();
+		heartbeatTimer = setTimeout(heartbeat, options.heartbeat);
+		// Here we need a timeout and then we need to reconnect
+	}
+
+	returnObj.close = function() {
+		clearTimeout(heartbeatTimer);
+		smppSession.close();
+	};
+
+	options = merge({
+		'host': '127.0.0.1',
+		'port': 2775,
+		'username': undefined,
+		'password': undefined,
+		'mode': 'transceiver',
+		'heartbeat': 10000
+	}, options);
+
+	log.info('larvitsmpp: client() - Connecting to SMPP server at ' + options.host + ':' + options.port);
+	smppSession = smpp.connect(options.host, options.port);
+
+	if (options.username !== undefined && options.password !== undefined) {
+		bindOptions.system_id = options.username;
+		bindOptions.password  = options.password;
+	}
+
+	if (options.mode === 'transceiver') {
+		log.error('bajs');
+	} else if (options.mode === 'receiver') {
+		log.error('skabb');
+	} else if (options.mode === 'transmitter') {
+		smppSession.bind_transmitter(bindOptions, function(pdu) {
+			var err;
+
+			log.info('larvitsmpp: client() - bind_transmitter done.');
+
+			if (pdu.command_status === 0) {
+				log.info('larvitsmpp: client() - bind_transmitter returned 0, success!');
+
+				heartbeat();
+				callback(null, returnObj);
+			} else {
+				err = new Error('models/smppsend.js: bind_transmitter returned "' + pdu.command_status + '", fail!');
+				log.warn(err.message, pdu);
+				smppSession.close();
+				callback(err);
+			}
+		});
+	} else {
+		err = new Error('larvitsmpp: client() - Invalid connection mode');
+		log.error(err.message);
+		callback(err);
+	}
+
+	smppSession.on('pdu', function(pdu) {
+		log.silly('larvitsmpp: client() - Received command "' + pdu.command + '"');
+	});
+
 };