从客户端到webrequest的流文件

我正在从c＃web应用程序进行文件上传，从客户端机器转到远程云主机。用户输入文件名称和位置并将其传递给服务器。我将文件的内容以块的形式传输到请求中。但是，该文件到达目标时无效。我确定它与我的请求头文件和垃圾文件有某种关系，因为我可以在从服务器上传到远程位置时使其工作。任何人都可以发现什么是错的？从客户端到webrequest的流文件

while (bytesRemaining > 0) 
{ 
    if (!sw.CanRead) 
    { 
     sw = File.OpenRead(txtFileUpload.Text); 
     if (offset > 0) 
      sw.Seek(offset, SeekOrigin.Begin); 
    } 

    int count = sw.Read(buffer, 0, (int) chunk); 

    request = 
     (HttpWebRequest) 
     WebRequest.Create("http://xxxxxx.com/write/" + 
          offset); 
    request.Method = "POST"; 
    request.ReadWriteTimeout = int.MaxValue; 
    request.Timeout = int.MaxValue; 
    request.KeepAlive = false; 
    string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x"); 
    request.ContentType = "multipart/form-data; boundary=" + boundary; 

    var postData = new MemoryStream(); 
    const string newLine = "\r\n"; 
    var sw3 = new StreamWriter(postData); 
    sw3.Write("--" + boundary + newLine); 
    sw3.Write("Content-Disposition: form-data;name=\"{0}\";filename=\"{1}\"{2}", "upload", 
       txtFileName.Text, newLine); 
    sw3.Write("Content-Type: multipart/form-data " + newLine + newLine); 
    sw3.Flush(); 

    postData.Write(buffer, 0, count); 
    sw3.Write(newLine); 
    sw3.Write("--{0}--{1}", boundary, newLine); 
    sw3.Flush(); 

    request.ContentLength = postData.Length; 
    using (Stream s = request.GetRequestStream()) 
     postData.WriteTo(s); 

    sw3.Write("--" + boundary + newLine); 
    sw3.Write("Content-Disposition: form-data;name=\"\"" + newLine); 
    sw3.Write("content-type:octet-stream;charset=windows-1250" + newLine); 

    sw3.Write("VALUE" + newLine); 
    sw3.Write("--{0}--{1}", boundary, newLine); 
    sw3.Flush(); 
    postData.Close(); 

    // These next 3 lines are what I had before, instead of all the previous 
    // code, which worked when uploading a file from the server to the remote 
    // location. 
    //using (Stream sw2 = request.GetRequestStream()) 
    //{ 
    // sw2.Write(buffer, 0, count); 
    //} 

    using (WebResponse resp = request.GetResponse()) 
    { 
     resp.Close(); 
    } 

    offset += count; 
    bytesRemaining -= count; 

}

来源

2011-05-27 user756678

为什么要重新发明轮子？使用

WebClient.UploadFile

http://msdn.microsoft.com/en-us/library/system.net.webclient.uploadfile(v=vs.71).aspx

他们甚至有一个例子。

来源

2011-05-27 21:23:03

我需要上传文件，因为它们很大（> = 10 GB）。我不认为WebClient.UploadFile支持。 – user756678 2011-05-27 22:59:45

另外，我需要能够将授权标头传递给请求。 – user756678 2011-05-27 23:15:35

任何人对此有任何意见？漂亮请！ – user756678 2011-05-30 17:34:45

从客户端到webrequest的流文件

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