3 Replies
      Latest reply: Dec 20, 2016 1:39 AM by tej13 RSS
      tej13 Level 1 Level 1 (0 points)

        Hi, I am trying to direct all the requests made by the webview through a proxy by implementing a custom HTTP protocol. Below is my code snippet:



        - (void)startLoading {
            /------------BEGIN ATTACHING PROXY TO THE REQUEST-----------*/
            NSString* proxyHost = @"xx.xx.xx.xx";
            NSNumber* proxyPort = [NSNumber numberWithInt: 8080];
            NSDictionary *proxyDict = @{
                                        @"HTTPEnable"  : [NSNumber numberWithInt:1],
                                        (NSString *)kCFStreamPropertyHTTPProxyHost  : proxyHost,
                                        (NSString *)kCFStreamPropertyHTTPProxyPort  : proxyPort,
                                        @"HTTPSEnable" : [NSNumber numberWithInt:1],
                                        (NSString *)kCFStreamPropertyHTTPSProxyHost : proxyHost,
                                        (NSString *)kCFStreamPropertyHTTPSProxyPort : proxyPort,
            NSMutableURLRequest *req = [correctedRequest mutableCopy];
            NSString *proxyUsername = @"abcd";
            NSString *proxypassword = @"abcd123";
            NSString *authenticationString = [NSString stringWithFormat:@"%@:%@", proxyUsername, proxypassword];
            NSData *authenticationData = [authenticationString dataUsingEncoding:NSASCIIStringEncoding];
            NSString *authenticationValue = [authenticationData base64Encoding];
            authenticationValue = [@"Basic " stringByAppendingString:authenticationValue];
            [req  setValue:authenticationValue forHTTPHeaderField:@"Proxy-Authorization"];
            correctedRequest = [req copy];
            NSURLSessionConfiguration *configuration1 = [NSURLSessionConfiguration ephemeralSessionConfiguration];
            configuration1.connectionProxyDictionary = proxyDict;
            /------------END ATTACHING PROXY TO THE REQUEST-----------*/
            NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration1 delegate:self delegateQueue:nil];
            NSURLSessionDataTask * dataTask = [session dataTaskWithRequest:correctedRequest];
            [dataTask resume];


        The above code works for some URL's/websited without asking the user to enter the proxy credentials manually but the same code doesnt work for some websites and a pop appears asking the user to enter the authentication credentials manually. What is the reason for such a behaviour? Do I need to make any changes in my code to get this fixed?


        Thanks in advance!!