What is Xamarin Studio's class HttpWebRequest replacement in Objective C?

Question

I am pretty much new to Xamarin Studio. and i need to use a functionality in my code which i am writing in Objective C, from another code which in Previously written in Xamarin(C#).

In the Xamarin Code a byte stream of an Image is getting attached to an HttpWebRequest instance. and posted on a server, in order to get a processed image.

I am being unable to find how to use same functionality as the code in xamarin

using (Stream requestStream = httpWebRequest.GetRequestStream ()){}

Does.

my Xamarin Code is As Follows :-

HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create (string.Concat (new string[]
        {
            Common.BaseAddress,
            "visualize/",
            GenericHelper.ServiceEncrypt (Common.Token),
            "/",
            Common.AppTag,
            "/",
            Common.ConstructTreatmentSelections ()
        }));
        httpWebRequest.Method = "POST";
        httpWebRequest.ContentType = "application/x-www-form-urlencoded";
        using (Stream requestStream = httpWebRequest.GetRequestStream ())
        {
            int num = 2048;
            int i = 1;
            int num2 = pBytePhotoImage.Length;
            while (i < num2)
            {
                if (i + num > num2)
                {
                    num = num2 - i;
                }
                requestStream.Write (pBytePhotoImage, i - 1, num);
                float fProgress = (float)i / (float)num2;
                if (fProgress <= 1f)
                {
                    nSAutoreleasePool.InvokeOnMainThread (delegate
                    {
                        pProgressBar.set_Progress (fProgress);
                    });
                }
                else
                {
                    nSAutoreleasePool.InvokeOnMainThread (delegate
                    {
                        pProgressBar.set_Progress (1f);
                    });
                }
                i += num;
            }
            nSAutoreleasePool.InvokeOnMainThread (delegate
            {
                pAnimationImage.StartAnimating ();
            });
        }

From searching over the internet what i could gather and implemented was :-

my Objective C code is as follows :-

NSData *data = UIImageJPEGRepresentation(self.imageView.image, 0.2);
NSString *webServiceURL = @"https://webserviceNameBaseAddress/visualize/lEr0WKCdarv2FLGFvBRbhs41FN7zhgcdiwuEqFtLQINJ|PQpM8HEGQ~~/ios/SL|VL|OC|ML|";
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init] ;
[request setURL:[NSURL URLWithString:webServiceURL]];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:data];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData * responseData, NSError *err) {
    NSLog(@"URL Response");
    if (err) {
        NSLog(@"Err %@",err.description);

    }else
    {

        if (responseData) {
            NSLog(@"%@",[UIImage imageWithData:responseData]);
        }
        else{
            NSLog(@"not returning anything");
        }
    }
}];

Now when i run the code in Xcode : the output is :-

Error Domain=NSURLErrorDomain Code=-1000 "bad URL" UserInfo=0x75a9ea0 {NSUnderlyingError=0x7189250 "bad URL", NSLocalizedDescription=bad URL}

Any help would be great. I am stuck at this since two days.

PS :- for extracting the webService URL for POST request , from Xamarin App Code. what i did was i have printed the URL string out with the help of Consol.WriteLine() in Xamarin and then used the exact output in Xcode as NSMutableURLRequest

this is ios security. maybe this help you http://stackoverflow.com/questions/6287230/bad-url-when-requesting-with-nsurl or http://stackoverflow.com/questions/10782591/nsurlerrordomain-code-1000-bad-url-what-does-it-really-mean — Igor Antsiferov, Feb 17 '14 at 12:39
I don't understand what is working and what not. The ObjC version is OK but the C# version not? Or vice versa? If you get an error in Xcode, you're obviously not using Xamarin - I'm confused. — Krumelur, Feb 17 '14 at 14:33
He wants to convert C# code to ObjC. It is hard to determine what is wrong since not all the code is available. Is this the server address you are trying to reach: "webserviceNameBaseAddress" — SKall, Feb 17 '14 at 16:12

score 0 · Accepted Answer · edited May 23 '17 at 11:59

0

this is ios security. maybe this help you - Bad URL when requesting with NSURL

edited May 23 '17 at 11:59

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answered Feb 18 '14 at 10:56

Igor Antsiferov

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What is Xamarin Studio's class HttpWebRequest replacement in Objective C?

1 Answers1