diff --git a/Insider.xcodeproj/project.pbxproj b/Insider.xcodeproj/project.pbxproj
index d39fe4c..a507c4b 100644
--- a/Insider.xcodeproj/project.pbxproj
+++ b/Insider.xcodeproj/project.pbxproj
@@ -42,7 +42,7 @@
 		CD3305C41C737BB000494BB9 /* GCDWebServerMultiPartFormRequest.m in Sources */ = {isa = PBXBuildFile; fileRef = CD3305A71C737BB000494BB9 /* GCDWebServerMultiPartFormRequest.m */; };
 		CD3305C51C737BB000494BB9 /* GCDWebServerURLEncodedFormRequest.h in Headers */ = {isa = PBXBuildFile; fileRef = CD3305A81C737BB000494BB9 /* GCDWebServerURLEncodedFormRequest.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		CD3305C61C737BB000494BB9 /* GCDWebServerURLEncodedFormRequest.m in Sources */ = {isa = PBXBuildFile; fileRef = CD3305A91C737BB000494BB9 /* GCDWebServerURLEncodedFormRequest.m */; };
-		CD3305C71C737BB000494BB9 /* GCDWebServerDataResponse.h in Headers */ = {isa = PBXBuildFile; fileRef = CD3305AB1C737BB000494BB9 /* GCDWebServerDataResponse.h */; };
+		CD3305C71C737BB000494BB9 /* GCDWebServerDataResponse.h in Headers */ = {isa = PBXBuildFile; fileRef = CD3305AB1C737BB000494BB9 /* GCDWebServerDataResponse.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		CD3305C81C737BB000494BB9 /* GCDWebServerDataResponse.m in Sources */ = {isa = PBXBuildFile; fileRef = CD3305AC1C737BB000494BB9 /* GCDWebServerDataResponse.m */; };
 		CD3305C91C737BB000494BB9 /* GCDWebServerErrorResponse.h in Headers */ = {isa = PBXBuildFile; fileRef = CD3305AD1C737BB000494BB9 /* GCDWebServerErrorResponse.h */; };
 		CD3305CA1C737BB000494BB9 /* GCDWebServerErrorResponse.m in Sources */ = {isa = PBXBuildFile; fileRef = CD3305AE1C737BB000494BB9 /* GCDWebServerErrorResponse.m */; };
@@ -294,8 +294,8 @@
 				CD3305C51C737BB000494BB9 /* GCDWebServerURLEncodedFormRequest.h in Headers */,
 				CD3305BF1C737BB000494BB9 /* GCDWebServerDataRequest.h in Headers */,
 				CD3305BB1C737BB000494BB9 /* GCDWebServerRequest.h in Headers */,
-				CD3305C11C737BB000494BB9 /* GCDWebServerFileRequest.h in Headers */,
 				CD3305C71C737BB000494BB9 /* GCDWebServerDataResponse.h in Headers */,
+				CD3305C11C737BB000494BB9 /* GCDWebServerFileRequest.h in Headers */,
 				CD3305B71C737BB000494BB9 /* GCDWebServerFunctions.h in Headers */,
 				CD3305B51C737BB000494BB9 /* GCDWebServerConnection.h in Headers */,
 				CD3305BA1C737BB000494BB9 /* GCDWebServerPrivate.h in Headers */,
diff --git a/Insider/Insider.h b/Insider/Insider.h
index f526886..42188b7 100644
--- a/Insider/Insider.h
+++ b/Insider/Insider.h
@@ -15,4 +15,5 @@ FOUNDATION_EXPORT double InsiderVersionNumber;
 FOUNDATION_EXPORT const unsigned char InsiderVersionString[];
 
 #import "GCDWebServer.h"
-#import "GCDWebServerURLEncodedFormRequest.h"
\ No newline at end of file
+#import "GCDWebServerURLEncodedFormRequest.h"
+#import "GCDWebServerDataResponse.h"
\ No newline at end of file
diff --git a/Insider/Insider.swift b/Insider/Insider.swift
index 7bc25cf..20f8997 100644
--- a/Insider/Insider.swift
+++ b/Insider/Insider.swift
@@ -12,6 +12,11 @@ import UIKit
 @objc
 final public class Insider: NSObject {
 
+    enum StatusCodes: Int {
+        case Success = 200
+        case NotFound = 404
+    }
+    
     struct Constants {
         static let defaultPort: UInt = 8080
         static let defaultInsiderMethodSelector = Selector("insider:")
@@ -19,7 +24,9 @@ final public class Insider: NSObject {
     
     public static let sharedInstance = Insider()
     
-    public var appDelegateInsiderSelector: Selector?
+    public lazy var appDelegateInsiderSelector: Selector = {
+        return Constants.defaultInsiderMethodSelector
+    }()
     
     private let localWebServer = GCDWebServer()
     
@@ -30,33 +37,43 @@ final public class Insider: NSObject {
         // Add POST handler for x-www-form-urlencoded requests
         server.addDefaultHandlerForMethod("POST", requestClass: GCDWebServerURLEncodedFormRequest.self, processBlock: { request in
             
+            var didProcessParams = false
             if let request = request as? GCDWebServerURLEncodedFormRequest {
                 if let json = request.jsonObject {
-                    self.processRequestParams(json, selector: selector)
-                } else if let params = request.arguments {
-                    self.processRequestParams(params, selector: selector)
+                    didProcessParams = self.processRequestParams(json, selector: selector)
+                } else if let encodedParams = request.arguments {
+                    didProcessParams = self.processRequestParams(encodedParams, selector: selector)
                 }
             }
             
-            return nil
+            return GCDWebServerDataResponse(statusCode: (didProcessParams) ? StatusCodes.Success.rawValue : StatusCodes.NotFound.rawValue);
         })
     }
     
-    private func processRequestParams(params: AnyObject, selector: Selector) {
+    private func canProcessRequestParams() -> Bool {
+        return UIApplication.sharedApplication().delegate?.respondsToSelector(appDelegateInsiderSelector) ?? false
+    }
+    
+    private func processRequestParams(params: AnyObject, selector: Selector) -> Bool {
+        guard canProcessRequestParams() else {
+            return false
+        }
+        
         dispatch_sync(dispatch_get_main_queue()) { () -> Void in
             UIApplication.sharedApplication().delegate?.performSelector(selector, withObject: params)
         }
+        
+        return true
     }
     
+    // MARK - Public methods
+    
     public func start() {
         startWithPort(Constants.defaultPort)
     }
     
     public func startWithPort(port: UInt) {
-        addHandlersForServer(localWebServer,
-            withAppDelegateInsiderSelector: appDelegateInsiderSelector ?? Constants.defaultInsiderMethodSelector
-        )
-        
+        addHandlersForServer(localWebServer, withAppDelegateInsiderSelector: appDelegateInsiderSelector)
         localWebServer.startWithPort(port, bonjourName: nil)
     }