System.Net.Http.HttpRequestException

Question

I am trying to make a soap request:

 var _apiUrl = "https://www1.gsis.gr:443/wsaade/RgWsPublic2/RgWsPublic2";
            using (var httpClient = new HttpClient())
            {
                var response = await httpClient.PostAsync(
                    _apiUrl, new StringContent(
                      "myXML",
                        Encoding.UTF8,
                        "application/soap+xml"));
                if (response.IsSuccessStatusCode)
                {
                    Console.WriteLine(await response.Content.ReadAsStringAsync());
                }
            }

When trying to make the request I am getting error in response

" Exception thrown: 'System.Net.Http.HttpRequestException' in mscorlib.dll."

I have windows 7 64bit, and I am using the .net framework 4.7.2. If I will run the project in windows 10 or if I will downgrade my framework in 4.6.1 then it works fine. Why this is happening?

Your problem is on content-type "text/xml; encoding='utf-8'" and xml serialization it should like this System.Text.Encoding.ASCII.GetBytes(myXML); — Md Farid Uddin Kiron
– Md Farid Uddin Kiron, Commented Mar 3, 2020 at 9:07
Than you Md Farid Uddin Kiron, could you give give me an example? — DmO
– DmO, Commented Mar 3, 2020 at 9:37

Md Farid Uddin Kiron · Accepted Answer · 2020-03-03 09:48:27Z

1

Its seems you are encountered that error because of wrong xml serialization it should be like "text/xml; encoding='utf-8'" and System.Text.Encoding.ASCII.GetBytes(myXML) instead of what you are trying.

You could try this way:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("RequestURL");
    byte[] bytes;
    bytes = System.Text.Encoding.ASCII.GetBytes("myXML");
    request.ContentType = "text/xml; encoding='utf-8'";
    request.ContentLength = bytes.Length;
    request.Method = "POST";
    Stream requestStream = request.GetRequestStream();
    requestStream.Write(bytes, 0, bytes.Length);
    requestStream.Close();
    HttpWebResponse response;
    response = (HttpWebResponse)request.GetResponse();
    if (response.StatusCode == HttpStatusCode.OK)
    {
        Stream responseStream = response.GetResponseStream();
        string responseStr = new StreamReader(responseStream).ReadToEnd();
        return responseStr;
    }

You could refer Official Document

Hope that would help you.

edited Mar 3, 2020 at 9:48

answered Mar 3, 2020 at 9:42

Md Farid Uddin Kiron

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8 Comments

DmO Over a year ago

I am still getting the same issue

Md Farid Uddin Kiron Over a year ago

How is your xml include that on your question as well.

DmO Over a year ago

Here is my xml drive.google.com/file/d/1XUemXD24OIojpVgolv_5EyuU-DlQZh3i/…

Md Farid Uddin Kiron Over a year ago

You cannot pass xml that way, you have to convert in to C# class, then need to serialize it. finally have to pass that on above request have a look here

DmO Over a year ago

I am using XmlDocument load and then doc.OuterXml

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