带有摘要身份验证的HttpClient post请求会导致错误请求

Question

我使用以下代码从大华XVR相机中提取记录，并成功地返回记录。

        var domain = "http://IP";
        var credCache = new CredentialCache();
        credCache.Add(new Uri(domain), "Digest", new 
        NetworkCredential(username, password));
        var httpClient = new HttpClient(new HttpClientHandler { 
        Credentials = credCache });
        var result= await httpClient.GetStringAsync(new Uri(URL));   

但是，当我使用下面的代码发布记录时，它不起作用，并导致一个错误的请求。

        string url = "http://IP/cgi-bin/faceRecognitionServer.cgi";

        var postData = new List<KeyValuePair<string, string>>()
        {
        new KeyValuePair<string, string>( "action", "addPerson"),
        new KeyValuePair<string, string>("groupID", "1"),
        new KeyValuePair<string, string>("name", "Test Name"),
        new KeyValuePair<string, string>("birthday", "1980-01-05"),
        new KeyValuePair<string, string>("sex", "Male"),
        new KeyValuePair<string, string>("country", "Pakistan"),
        new KeyValuePair<string, string>("province", "KPK"),
        new KeyValuePair<string, string>("city", "Peshawar")
        };
        var content = new FormUrlEncodedContent(postData);

        var domain = "http://IP";
        var credCache = new CredentialCache();
        credCache.Add(new Uri(domain), "Digest", new NetworkCredential(username, password));
        var httpClient = new HttpClient(new HttpClientHandler { Credentials = credCache });
        var result = await httpClient.PostAsync(new Uri(url), content);

以上代码总是返回400个错误请求。如果有人能帮忙呢？

Answer 1

我把这个问题解决如下。也许能帮上忙。

1. 缩小了我必须嵌入到请求体中的图像的大小。

1. 将URL和参数连接在一个字符串中。

字符串url =“action=addPerson&groupID=1&name=TestName&sex=Male"；字符串域= "http://IP"；CredentialCache credCache =新CredentialCache {新Uri(域)、"Digest”、新NetworkCredential(用户名、密码)} }；使用HttpClient client =新HttpClient(新HttpClientHandler {凭据= credCache })；使用FileStream流= File.OpenRead(AppContext.BaseDirectory )。替换(“\bin\Debug\netcoreapp3.1”、“)+ "Files\14.jpg")；var file_content =新的ByteArrayContent(新的ByteArrayContent=新的MediaTypeHeaderValue("image/jpeg")；var response =等候client.PostAsync(url，file_content); )