用C#将文件上传到Mediafire

我在Mediafire开发者部分读了很多书，但似乎他们没有为C#开发者提供库，所以我尝试使用他们的web服务API的

上传文件的正常情况如下：

1-通过此链接请求session_token

https://www.mediafire.com/api/user/get_session_token.php?email={0}&password={1}&application_id={2}&signature={3}&token_version=2

此步骤运行良好，我得到session_token
之后，您在发布请求中使用session_token通过此链接上传文件

 http://www.mediafire.com/api/unversioned/upload/simple.php?uploadkey={0}&session_token={1}

Mediafire文档描述了原始HTTP上传请求：

POST http://www.mediafire.com/api/unversioned/upload/simple.php?uploadkey=5bb66g94blnnk&session_token=aa22f5a968f827daf69fd6b3515110c43e036bc5d2ed8b81657dd1bdfe4b4c3e3ea6757d1f47bc3d6a001a16bc6f25abb486c5e779328a5769bd9ed6064edb69 HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
X-Filehash:564dc5e9541a494e966066da8b2392e2e70e2438e4fcf4b0058cd9249abc4e1d
X-Filesize:29278
X-Filetype:text/plain
Content-Type: multipart/form-data; boundary=---------------------------41184676334
Content-Length: 29278
-----------------------------41184676334

Summer vacation
-----------------------------41184676334
Content-Disposition: form-data; name="image1"; filename="GrandCanyon.jpg"
Content-Type: image/jpeg
(Binary data not shown)
-----------------------------41184676334--

我试着做HttpWebRequest，但不起作用

    byte[] postData = File.ReadAllBytes(@"img2.jpg");
    System.Net.ServicePointManager.Expect100Continue = false;
    System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)WebRequest.Create("http://www.mediafire.com/api/1.1/upload/upload.php?uploadkey=3kh445&session_token=" + respon.session_token);
    request.Method = "POST";
    request.Headers.Clear();
    request.UserAgent = "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0";
    request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
    request.Headers.Add(HttpRequestHeader.AcceptLanguage, "en-us,en;q=0.5");
    request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
    request.ContentType = "multipart/form-data";
    request.ContentLength = postData.Length;
    Stream requestStream = request.GetRequestStream();
    requestStream.Write(postData, 0, postData.Length);
    requestStream.Flush();
    requestStream.Close();
    HttpWebResponse response = (HttpWebResponse)request.GetResponse();

此代码引发异常：

The server committed a protocol violation. Section=ResponseHeader Detail=CR must be followed by LF

我也尝试了这个代码，它的保留请求没有响应：

string path = String.Format("http://www.mediafire.com/api/unversioned/upload/simple.php?uploadkey=3kh5656&session_token={0}", respon.session_token);
            Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            string http = string.Format(
                        @"
POST {0} HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
X-Filehash:{1}
X-Filesize:{2}
X-Filetype:text/plain
Content-Type: multipart/form-data; boundary=---------------------------{6}
Content-Length: {3}
-----------------------------{6}

Summer vacation
-----------------------------{6}
Content-Disposition: form-data; name=""image1""; filename=""{4}""
Content-Type: image/jpeg
{5}
-----------------------------{6}--"
                        ,
                        path, 
                        GetFileHash(@"img2.jpg"), 
                        file.Length,
                        file.LongLength, 
                        filename, 
                        Encoding.Default.GetString(file),
                        DateTime.Now.Ticks.ToString("x")
                        );
            sock.Connect(new IPAddress(Dns.GetHostEntry("www.mediafire.com").AddressList[0].GetAddressBytes()), 80);
            sock.Send(Encoding.Default.GetBytes(http));
            while (sock.Available == 0)
                Thread.Sleep(1);

            file = new byte[sock.Available];
            sock.Receive(file, 0, sock.Available, SocketFlags.None);
            string result = Encoding.ASCII.GetString(file);
            sock.Close();

很抱歉英语不好，有什么不清楚的地方请告诉我，我会编辑这个问题。