Adding random uuid to message id if not assigned. It makes sure that the DLR's are mapped properly for smpp clients.

lib/session.js

@@ -6,6 +6,7 @@ const	topLogPrefix	= 'larvitsmpp: lib/session.js: ',
 	utils	= require('./utils'),
 	async	= require('async'),
 	defs	= require('./defs'),
+	uuid	= require('uuid/v1'),
 	log	= require('winston');
 
 /**
@@ -32,7 +33,7 @@ function smsResp(status, cb) {
 	}
 
 	if (sms.smsId === undefined) {
-		sms.smsId	= '';
+		sms.smsId	= uuid();
 	}
 
 	// Accept a generic positive status

package.json

@@ -13,6 +13,7 @@
     "iconv-lite": "^0.4.18",
     "moment": "^2.18.1",
     "utils-merge": "^1.0.0",
+    "uuid": "^3.2.1",
     "winston": "^2.3.1"
   },
   "description": "Simplified SMPP implementation",