Windows.Web.Http.HttpClient和System.Net.Http.HttpClient收到不同的响应

Question

I'm developing a twitter third party application. while looking for a way to send a web request, I found two classes: Windows.Web.Http.HttpClient and System.Net.Http.HttpClient .

Both classes do not seem to have much difference, but they get very different esults in the same request.

When I send requests with Windows.Web.Http.HttpClient , it works well.

public async Task<string> Request(Method method, string url, string postData)
{
    var http = new Windows.Web.Http.HttpClient();
    Windows.Web.Http.HttpResponseMessage response;

    if (method == Method.POST)
    {

        var httpContent = new Windows.Web.Http.HttpStringContent(postData, Windows.Storage.Streams.UnicodeEncoding.Utf8);
        httpContent.Headers.ContentType = Windows.Web.Http.Headers.HttpMediaTypeHeaderValue.Parse("application/x-www-form-urlencoded");
        response = await http.PostAsync(new Uri(url), httpContent);
    }
    else
    {
        response = await http.GetAsync(new Uri(url));
    }

    return await response.Content.ReadAsStringAsync();
}

But If I send requests with System.Net.Http.HttpClient . I receive wrong response.

(But, when I access the request url with a web browser, it works well not like image below)

public async Task<string> Request(Method method, string url, string postData)
{
    var http = new System.Net.Http.HttpClient();
    System.Net.Http.HttpResponseMessage response;

    if (method == Method.POST)
    {

        var httpContent = new System.Net.Http.StringContent(postData, Encoding.UTF8, "application/x-www-form-urlencoded");
        response = await http.PostAsync(new Uri(url), httpContent);
    }else
    {
        response = await http.GetAsync(new Uri(url));
    }


    return await response.Content.ReadAsStringAsync();
}

Why is this different? and how can I solve this problem?

Answer 1

The problem was HttpClient didn't decompress gzip data as Nuf said in the comments.

so I just wrote tiny code for gzip decompression.

public async Task<string> Request(Method method, string url, string postData)
{
    var handler = new System.Net.Http.HttpClientHandler()
    {
        AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate
    };
    var http = new System.Net.Http.HttpClient(handler);
    System.Net.Http.HttpResponseMessage response;
    if (method == Method.POST)
    {

        var httpContent = new System.Net.Http.StringContent(postData, Encoding.UTF8, "application/x-www-form-urlencoded");
        response = await http.PostAsync(new Uri(url), httpContent);
    }
    else
    {
        response = await http.GetAsync(new Uri(url));
    }


    return await response.Content.ReadAsStringAsync();
}