In case null, emptry string, undefined or NaN is passed as parameter value then its default value is applied.

Also print to console the processed value of all the parameters after validating them.

Author: ibc

src/UA.js

@@ -599,7 +599,7 @@ JsSIP.UA.prototype.recoverTransport = function(ua) {
  */
 JsSIP.UA.prototype.loadConfig = function(configuration) {
   // Settings and default values
-  var parameter, attribute, idx, uri, ws_uri, contact,
+  var parameter, attribute, idx, uri, ws_uri, contact, value,
     settings = {
       /* Host address
       * Value to be set in Via sent_by and host part of Contact FQDN
@@ -677,10 +677,18 @@ JsSIP.UA.prototype.loadConfig = function(configuration) {
   // Check Optional parameters
   for(parameter in JsSIP.UA.configuration_check.optional) {
     if(configuration.hasOwnProperty(parameter)) {
-      if(JsSIP.UA.configuration_check.optional[parameter](configuration[parameter])) {
-        settings[parameter] = configuration[parameter];
+      value = configuration[parameter];
+
+      // If the parameter value is null, empty string or undefined then apply its default value.
+      if(value === null || value === "" || value === undefined) { continue; }
+      // If it's a number with NaN value then also apply its default value.
+      // NOTE: JS does not allow "value === NaN", the following does the work:
+      else if(typeof(value) === 'number' && window.isNaN(value)) { continue; }
+
+      if(JsSIP.UA.configuration_check.optional[parameter](value)) {
+        settings[parameter] = value;
       } else {
-        console.error('Bad configuration parameter: ' + parameter);
+        console.error('Bad configuration parameter ' + parameter + ' with value ' + window.String(value));
         return false;
       }
     }
@@ -751,7 +759,10 @@ JsSIP.UA.prototype.loadConfig = function(configuration) {
   }
 
   // Fill the value of the configuration_skeleton
+  console.log('configuration parameters after validation:');
   for(attribute in settings) {
+    value = settings[attribute];
+    console.log('· ' + attribute + ': ' + window.String(settings[attribute]));
     JsSIP.UA.configuration_skeleton[attribute].value = settings[attribute];
   }