diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64ed11e..65b0520 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.2.0
+
+- Feature #239: add enumeration style object for error codes
+
 ## 2.1.1
 
 - Fixed #224: response type "arraybuffer" and "blob" not working on browser platform
diff --git a/README.md b/README.md
index 6c18cab..fec18ef 100644
--- a/README.md
+++ b/README.md
@@ -292,7 +292,7 @@ cordova.plugin.http.post('https://google.com/', {
 ```
 
 #### failure
-The error function receives a response object with 4 properties: status, error, url, and headers (url and headers being optional).  **status** is the HTTP response code as numeric value. **error** is the error response from the server as a string. **url** is the final URL obtained after any redirects as a string. **headers** is an object with the headers. The keys of the returned object are the header names and the values are the respective header values. All header names are lowercase.
+The error function receives a response object with 4 properties: status, error, url, and headers (url and headers being optional).  **status** is a HTTP response code or an internal error code. Positive values are HTTP status codes whereas negative values do represent internal error codes. **error** is the error response from the server as a string or an internal error message. **url** is the final URL obtained after any redirects as a string. **headers** is an object with the headers. The keys of the returned object are the header names and the values are the respective header values. All header names are lowercase.
 
 Here's a quick example:
 
@@ -307,6 +307,8 @@ Here's a quick example:
 }
 ```
 
+:warning: An enumeration style object is exposed as `cordova.plugin.http.ErrorCode`. You can use it to check against internal error codes.
+
 ### get<a name="get"></a>
 Execute a GET request.  Takes a URL, parameters, and headers.  See the [post](#post) documentation for details on what is returned on success and failure.
 
diff --git a/package.json b/package.json
index 1e375a8..6b4d3ff 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cordova-plugin-advanced-http",
-  "version": "2.1.1",
+  "version": "2.2.0",
   "description": "Cordova / Phonegap plugin for communicating with HTTP servers using SSL pinning",
   "scripts": {
     "updatecert": "node ./scripts/update-e2e-server-cert.js && node ./scripts/update-e2e-client-cert.js",
diff --git a/test/js-specs.js b/test/js-specs.js
index eb4c1c4..e860eb5 100644
--- a/test/js-specs.js
+++ b/test/js-specs.js
@@ -147,6 +147,10 @@ describe('Advanced HTTP public interface', function () {
   it('throws an Error when you try to configure global option for following redirects with a string', () => {
     (function () { http.setFollowRedirect('myString'); }).should.throw(messages.INVALID_FOLLOW_REDIRECT_VALUE);
   });
+
+  it('exposes an enumeration style object with mappings for the error codes', () => {
+    Object.keys(http.ErrorCode).forEach(key => http.ErrorCode[key].should.be.a('number'));
+  });
 });
 
 describe('URL util', function () {
diff --git a/www/public-interface.js b/www/public-interface.js
index 371c4da..694900a 100644
--- a/www/public-interface.js
+++ b/www/public-interface.js
@@ -1,5 +1,14 @@
 module.exports = function init(exec, cookieHandler, urlUtil, helpers, globalConfigs) {
-  const publicInterface = {
+  var ErrorCode = {
+    Generic: -1,
+    SslException: -2,
+    ServerNotFound: -3,
+    Timeout: -4,
+    UnsupportedUrl: -5,
+    NotConnected: -6,
+  };
+
+  var publicInterface = {
     getBasicAuthHeader: getBasicAuthHeader,
     useBasicAuth: useBasicAuth,
     getHeaders: getHeaders,
@@ -28,7 +37,8 @@ module.exports = function init(exec, cookieHandler, urlUtil, helpers, globalConf
     delete: del,
     head: head,
     uploadFile: uploadFile,
-    downloadFile: downloadFile
+    downloadFile: downloadFile,
+    ErrorCode: ErrorCode
   };
 
   function getBasicAuthHeader(username, password) {