diff --git a/AyanTechNetworkingLibrary.podspec b/AyanTechNetworkingLibrary.podspec
index 4b7abf4..b2278ae 100644
--- a/AyanTechNetworkingLibrary.podspec
+++ b/AyanTechNetworkingLibrary.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name = "AyanTechNetworkingLibrary"
-  spec.version = "1.1.0"
+  spec.version = "1.2.2"
   spec.summary = "Networking library for comunicate AyanTech web services"
   spec.homepage = "https://github.com/AyanTech/AyanTechNetworkingLibrary-iOS"
   spec.license = { type: 'MIT', file: 'LICENSE' }
diff --git a/AyanTechNetworkingLibrary/Model/ATRequest.swift b/AyanTechNetworkingLibrary/Model/ATRequest.swift
index f642333..41d34c2 100644
--- a/AyanTechNetworkingLibrary/Model/ATRequest.swift
+++ b/AyanTechNetworkingLibrary/Model/ATRequest.swift
@@ -18,13 +18,13 @@ public class ATRequest {
     var body: Data?
     var task: URLSessionTask?
     
-    var contentType: ContentType = .applicationJson {
+    public var contentType: ContentType = .applicationJson {
         didSet {
             self.headers["Content-Type"] = self.contentType.rawValue
         }
     }
 
-    enum ContentType: String {
+    public enum ContentType: String {
         case applicationJson = "application/json"
         case textPlain = "text/plain"
         case textHtml = "text/html"
@@ -40,6 +40,7 @@ public class ATRequest {
         let result = ATRequest()
         result.url = url
         result.method = method
+        result.headers = ATRequest.Configuration.defaultHeaders
         return result
     }
 
@@ -49,7 +50,7 @@ public class ATRequest {
     }
 
     @discardableResult public func setJsonBody(body: JSONObject) -> Self {
-        self.body = body.toJsonData()
+        self.body = Configuration.parametersCreator(body).toJsonData()
         self.contentType = .applicationJson
         return self
     }
@@ -79,4 +80,9 @@ public class ATRequest {
             responseHandler?(atResponse)
         }
     }
+    
+    public class Configuration {
+        public static var defaultHeaders: [String: String] = [:]
+        public static var parametersCreator: (JSONObject) -> JSONObject = { input in return input}
+    }
 }
diff --git a/AyanTechNetworkingLibrary/Model/ATResponse.swift b/AyanTechNetworkingLibrary/Model/ATResponse.swift
index 69bf4a9..77f5c85 100644
--- a/AyanTechNetworkingLibrary/Model/ATResponse.swift
+++ b/AyanTechNetworkingLibrary/Model/ATResponse.swift
@@ -52,8 +52,8 @@ public class ATResponse {
     }
     
     public class Status {
-        var errorCodeString: String?
-        var description: String?
+        public var errorCodeString: String?
+        public var description: String?
 
         public var isSuccess: Bool {
             return self.errorCodeString == kResponseSuccessCode
diff --git a/AyanTechNetworkingLibrary/Model/Server.swift b/AyanTechNetworkingLibrary/Model/Server.swift
index 43e2524..d639460 100644
--- a/AyanTechNetworkingLibrary/Model/Server.swift
+++ b/AyanTechNetworkingLibrary/Model/Server.swift
@@ -28,13 +28,14 @@ class Server {
         req.task = URLSession.shared.dataTask(with: r as URLRequest) { (data, response, error) in
             Utils.runOnMainThread {
                 UIApplication.shared.isNetworkActivityIndicatorVisible = false
+                
+                if let responseString = String.init(data: data ?? Data(), encoding: .utf8) {
+                    ATLog("RESPONSE", logData: "\(responseString)")
+                }
+                
+                req.task = nil
+                responseHandler(data, response, error)
             }
-            if let responseString = String.init(data: data ?? Data(), encoding: .utf8) {
-                ATLog("RESPONSE", logData: "\(responseString)")
-            }
-            
-            req.task = nil
-            responseHandler(data, response, error)
         }
         req.task?.resume()
     }