Enhance URI and NameAddrHeader

- Return the deleted header/paramter in deleteParam()/deleteHeader()
- Lowercase parameter value on setParam()

Author: jmillan

src/NameAddrHeader.js

@@ -37,7 +37,7 @@ JsSIP.NameAddrHeader = function(uri, display_name, parameters) {
 JsSIP.NameAddrHeader.prototype = {
   setParam: function(key, value) {
     if (key) {
-      this.parameters[key.toLowerCase()] = (typeof value === 'undefined' || value === null)? null : value.toString();
+      this.parameters[key.toLowerCase()] = (typeof value === 'undefined' || value === null)? null : value.toString().toLowerCase();
     }
   },
 
@@ -54,9 +54,12 @@ JsSIP.NameAddrHeader.prototype = {
   },
 
   deleteParam: function(parameter) {
+    var value;
     parameter = parameter.toLowerCase();
     if (this.parameters.hasOwnProperty(parameter)) {
+      value = this.parameters[parameter];
       delete this.parameters[parameter];
+      return value;
     }
   },
 

src/URI.js

@@ -63,7 +63,7 @@ JsSIP.URI = function(scheme, user, host, port, parameters, headers) {
 JsSIP.URI.prototype = {
   setParam: function(key, value) {
     if(key) {
-      this.parameters[key.toLowerCase()] = (typeof value === 'undefined' || value === null)? null : value.toString();
+      this.parameters[key.toLowerCase()] = (typeof value === 'undefined' || value === null)? null : value.toString().toLowerCase();
     }
   },
 
@@ -80,9 +80,12 @@ JsSIP.URI.prototype = {
   },
 
   deleteParam: function(parameter) {
+    var value;
     parameter = parameter.toLowerCase();
     if (this.parameters.hasOwnProperty(parameter)) {
+      value = this.parameters[parameter];
       delete this.parameters[parameter];
+      return value;
     }
   },
 
@@ -107,15 +110,17 @@ JsSIP.URI.prototype = {
   },
 
   deleteHeader: function(header) {
+    var value;
     header = JsSIP.Utils.headerize(header);
     if(this.headers.hasOwnProperty(header)) {
+      value = this.headers[header];
       delete this.headers[header];
+      return value;
     }
   },
 
   clearHeaders: function() {
     this.headers = {};
-    return this.headers;
   },
 
   clone: function() {