相当于CURL命令的Web客户端

Question

我正在尝试通过POST将文件上传到c#winform中的REST API。

如果我用curl运行以下命令，文件将成功上传：

curl.exe -H "Content-type: application/octet-stream" -X POST http://myapiurl --data-binary @C:test.docx

我已经尝试在我的WinForm:中使用WebClient

using (var client = new WebClient())
            {
                client.Headers.Add("Content-Type", "application/octet-stream");
                byte[] result = client.UploadFile(url, file);
                string responseAsString = Encoding.Default.GetString(result);
                tb_result.Text += responseAsString;
            } 

但我只得到了一个（500）内部服务器。

用fiddler检查，以下标题添加了CURL:

POST http://myapiurl HTTP/1.1
User-Agent: curl/7.33.0
Host: 10.52.130.121:90
Accept: */*
Connection: Keep-Alive
Content-type: application/octet-stream
Content-Length: 13343
Expect: 100-continue

但是检查我的WebClient方法会显示以下内容：

POST http://myapiurl HTTP/1.1
Accept: */*
Content-Type: multipart/form-data; boundary=---------------------8d220bbd95f8b18
Host: 10.52.130.121:90
Content-Length: 13536
Expect: 100-continue
Connection: Keep-Alive

如何从我的应用程序模拟上面的CURL命令？

Answer 1

如何从我的应用程序模拟上面的CURL命令？

使用HttpWebRequest。它为您提供了更多的灵活性。如下：

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://myapiurl");
request.Method = "POST";
request.UserAgent = "curl/7.33.0";
request.Host = "10.52.130.121:90";
request.Accept = "Accept=*/*";
request.Connection = "Keep-Alive";
request.ContentType = "application/octet-stream";
request.ContentLength = 13343;
request.Expect = "100-continue";