C＃上传一个byte [] FTP服务器内 [英] c# upload a byte[] inside an FTP server

问题描述

我需要内部和FTP服务器上传一些数据。

I need to upload some DATA inside and FTP server.

下面就如何上传中的文件和FTP一切正常计算器的帖子。

Following stackoverflow posts on how to upload a FILE inside and FTP everything works.

现在我正在努力提高我的上传

Now i am trying to improve my upload.

而不是收集数据，将其写入一个文件，然后上传文件中的。FTP我想收集数据，并将其上传而不创建本地文件

Instead collecting the DATA, writing them to a FILE and then upload the file inside the FTP i want to collect the DATA and upload them without creating a local file.

要做到这一点我做到以下几点：

To achieve this i do the following:

string uri = "ftp://" + ftpServerIp + "/" + fileToUpload.Name;
System.Net.FtpWebRequest reqFTP;
// Create FtpWebRequest object from the Uri provided
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIp + "/" + fileToUpload.Name));
// Provide the WebPermission Credintials
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
// By default KeepAlive is true, where the control connection is not closed after a command is executed.
reqFTP.KeepAlive = false;
// Specify the command to be executed.
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
// Specify the data transfer type.
reqFTP.UseBinary = true;
byte[] messageContent = Encoding.ASCII.GetBytes(message);
// Notify the server about the size of the uploaded file
reqFTP.ContentLength = messageContent.Length;
int buffLength = 2048;
// Stream to which the file to be upload is written
Stream strm = reqFTP.GetRequestStream();
// Write Content from the file stream to the FTP Upload Stream
int total_bytes = (int)messageContent.Length;
while (total_bytes > 0)
{
    strm.Write(messageContent, 0, buffLength);
    total_bytes = total_bytes - buffLength;
}
strm.Close();

现在什么情况如下：

1. 我看到客户端连接到服务器


2. 创建文件


3. 没有数据传输


4. 在某些时候线程终止连接关闭


5. 如果我检查上传的文件是空的。

1. i see the client connecting to the server
2. the file is created
3. no data are transferred
4. at some point the thread is terminated the connection is closed
5. if i inspect the uploaded file is empty.

我要来传输数据是一个字符串类型，这就是为什么我做的byte [] = messageContent的Encoding.ASCII.GetBytes（消息）;

the DATA i want to to transfer is a STRING TYPE, that is why i do byte[] messageContent = Encoding.ASCII.GetBytes(message);

我究竟做错了

另外：如果我编码日期ASCII.GetBytes，在远程服务器上会我有一个文本文件或一些字节的文件？

moreover: if i encode date with ASCII.GetBytes, on the remote server will i have a TEXT file or a file with some Bytes?

感谢您的任何建议。

推荐答案

一个问题，我的代码看到的是，你正在写在相同字节到服务器上的每个迭代：

One issue that I see with the code is that you are writing the same bytes to the server on each iteration:

while (total_bytes > 0)
{
    strm.Write(messageContent, 0, buffLength); 
    total_bytes = total_bytes - buffLength;
}

您需要通过做这样的事情来改变偏移位置>

You need to change the offset position by doing something like this:

while (total_bytes < messageContent.Length)
{
    strm.Write(messageContent, total_bytes , bufferLength);
    total_bytes += bufferLength;
}

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