Fixed issue with enq link trying on a closed socket

lib/client.js

@@ -13,68 +13,68 @@ var log     = require('winston'),
  * @return obj (returnObj)
  */
 function clientSession(sock, options) {
-	var parent = session(sock);
+	var returnObj = session(sock);
 
-	parent.login = function() {
+	returnObj.login = function() {
 		var loginPdu = {
 			'cmdName': 'bind_transceiver',
-			'seqNr': parent.ourSeqNr,
+			'seqNr': returnObj.ourSeqNr,
 			'params': {
 				'system_id': options.username,
 				'password': options.password
 			}
 		};
 
-		parent.send(loginPdu, function(err, retPduObj) {
+		returnObj.send(loginPdu, function(err, retPduObj) {
 			if (err) {
-				parent.emit('loginFailed');
+				returnObj.emit('loginFailed');
 				return;
 			}
 
 			if (retPduObj.cmdStatus === 'ESME_ROK') {
-				log.info('larvitsmpp: lib/client.js: clientSession() - parent.login() - Successful login!');
-				parent.loggedIn = true;
-				parent.emit('loggedIn');
+				log.info('larvitsmpp: lib/client.js: clientSession() - returnObj.login() - Successful login!');
+				returnObj.loggedIn = true;
+				returnObj.emit('loggedIn');
 			} else {
-				log.info('larvitsmpp: lib/client.js: clientSession() - parent.login() - Login failed. Status msg: ' + retPduObj.cmdStatus);
-				parent.emit('loginFailed');
+				log.info('larvitsmpp: lib/client.js: clientSession() - returnObj.login() - Login failed. Status msg: ' + retPduObj.cmdStatus);
+				returnObj.emit('loginFailed');
 			}
 		});
 	};
 
-	parent.resetEnqLinkTimer = function() {
+	returnObj.resetEnqLinkTimer = function() {
 		log.silly('larvitsmpp: lib/client.js: clientSession() - resetEnqLinkTimer() - Resetting the kill timer');
-		if (parent.enqLinkTimer) {
-			clearTimeout(parent.enqLinkTimer);
+		if (returnObj.enqLinkTimer) {
+			clearTimeout(returnObj.enqLinkTimer);
 		}
 
-		parent.enqLinkTimer = setTimeout(function() {
-			parent.send({
+		returnObj.enqLinkTimer = setTimeout(function() {
+			returnObj.send({
 				cmdName: 'enquire_link',
-				seqNr: parent.ourSeqNr
+				seqNr: returnObj.ourSeqNr
 			});
 		}, options.enqLinkTiming);
 	};
 
-	parent.login();
-	parent.resetEnqLinkTimer();
+	returnObj.login();
+	returnObj.resetEnqLinkTimer();
 
-	parent.on('incomingPdu', function(pduObj) {
+	returnObj.on('incomingPdu', function(pduObj) {
 		if (pduObj.cmdName === 'deliver_sm') {
-			parent.deliverSm(pduObj);
+			returnObj.deliverSm(pduObj);
 		} else if (pduObj.cmdName === 'enquire_link') {
-			parent.enquireLink();
+			returnObj.enquireLink();
 		} else if (pduObj.cmdName === 'submit_sm') {
-			parent.submitSm(pduObj);
+			returnObj.submitSm(pduObj);
 		} else if (pduObj.cmdName === 'unbind') {
-			parent.sendReturn(pduObj, 'ESME_ROK', true);
+			returnObj.sendReturn(pduObj, 'ESME_ROK', true);
 		} else {
 			// All other commands we do not support
-			parent.sendReturn(pduObj, 'ESME_RINVCMDID');
+			returnObj.sendReturn(pduObj, 'ESME_RINVCMDID');
 		}
 	});
 
-	return parent;
+	return returnObj;
 }
 
 /**