Make HTML request with this header

Question

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My code is:

var client = new HttpClient { BaseAddress = new Uri("http://bf4stats.com") };
        client.DefaultRequestHeaders.Add("Referer", ":http://bf4stats.com/pc/Azezeil");
        client.DefaultRequestHeaders.Add("X-Requested-With", ": XMLHttpRequest");
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        HttpResponseMessage response = client.PostAsync("/pc/Azezeil", new StringContent("{" + "\"" + "request" + "\"" + ":" + "\"" + "updatePlayer" + "\"" + "}", Encoding.UTF8, "application/json")).Result;
        string res = await response.Content.ReadAsStringAsync();

The response come failed 417. How to make a POST request with HttpClient or any thing works on Windows Store apps C#?

Does this help? http://stackoverflow.com/questions/5401501/how-to-post-data-to-specific-url-using-webclient-in-c-sharp — Gelatin, Jan 01 '14 at 19:12
Sorry my mistake. WebClient seems doesn't supported on windows store apps. — Medo Omar, Jan 01 '14 at 20:03
What about this? http://stackoverflow.com/questions/15176538/net-httpclient-how-to-post-string-value — Gelatin, Jan 01 '14 at 20:10
Don't delete your question, some others may run into this issue. — Darrel Miller, Jan 01 '14 at 20:35
Do you mean HTTP request? Please could you update your question, and add your language as a tag - thanks! — SilverlightFox, Jan 02 '14 at 15:49

score 1 · Accepted Answer · answered Jan 01 '14 at 20:34

Error 417 is "Expectation Failed". This is because, when you do a POST, by default HttpClient will send a Expect Continue header and wait for a 100 response before continuing with the POST. To disable this behavior, you can do,

httpClient.DefaultRequestHeaders.ExpectContinue = false;

Make HTML request with this header

1 Answers1