How to convert a curl call to C# using HttpClient

Question

How do you convert a curl to be used in C# using HttpClient?

Here is the curl call that I need to use:

Request:
curl -i \
-X POST \
-H "X-Version: 1" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer Your Authorization Token" \
-H "Accept: application/json" \
-d '{"text":"Test Message","to":["Recipients Mobile Number"]}' \
-s \
https://api.clickatell.com/rest/message

I have basic knowledge of HttpClient and I know nothing of curl calls so this is what I could figure from Googling. Below is my code, not sure if it is correct?

using (var httpClient = new HttpClient())
{
     httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "abcdefghij0123456789");

     httpClient.DefaultRequestHeaders.Accept.Clear();
     httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

     httpClient.DefaultRequestHeaders.Add("X-Version", "1");

     StringContent stringContent = new StringContent("{\"text\":\"Test Message\",\"to\":[\"27936906909\"]}");
     stringContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

     HttpResponseMessage httpResponseMessage = await httpClient.PostAsync("https://api.clickatell.com/rest/message", stringContent);
     if (httpResponseMessage.IsSuccessStatusCode)
     {
     }
     else
     {
          string failureMsg = "HTTP Status: " + httpResponseMessage.StatusCode.ToString() + " - Reason: " + httpResponseMessage.ReasonPhrase;
     }

     //string sjson = await httpResponseMessage.Content.ReadAsAsync<string>();
     //return sjson;
}

Everything looks correct to be but when I run it then I keep on getting a bad request. I'm not sure how to fix this? Not sure if I missed something from the curl call?

What exactly is the problem? What have you tried? How did that fail? — svick
– svick, Commented Oct 31, 2014 at 10:28
Check my updated post. What I have I don't know if it correct. — Brendan Vogt
– Brendan Vogt, Commented Oct 31, 2014 at 11:03
@KonradKokosa My question is not a duplicate! Did you read my question? I want to know how do you convert a curl call using `HttpClient'. In your suggestion there is nothing about curl calls. — Brendan Vogt
– Brendan Vogt, Commented Oct 31, 2014 at 11:22
Your curl call is just HTTP POST call, so I do not see any difference - it is just about using HttpClient. — Konrad Kokosa
– Konrad Kokosa, Commented Oct 31, 2014 at 11:32

Eric · Accepted Answer · 2014-11-03 09:18:58Z

0

I'll reply the same thing I always reply when someone is trying to debug network issues. Install wireshark, create a session with the traffic you want to mimic, then create another one with your own code. This will allow you to see exactly what is going on and which header are not transmitted correct.

answered Nov 3, 2014 at 9:18

Eric

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1 Comment

ls. Over a year ago

Do you have a tutorial on exactly the approach you mentioned? thx

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