由于一些防火墙问题,我们需要使用“主动”模式进行FTP(即不是通过启动PASV
命令)。是否可以使用FtpWebRequest做“活动”模式FTP?
目前,我们正在使用的代码线沿线的:
// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/test.htm");
request.Method = WebRequestMethods.Ftp.UploadFile;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential ("anonymous","[email protected]");
// Copy the contents of the file to the request stream.
StreamReader sourceStream = new StreamReader("testfile.txt");
byte [] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
sourceStream.Close();
request.ContentLength = fileContents.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(fileContents, 0, fileContents.Length);
requestStream.Close();
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
response.Close();
但这似乎默认使用被动模式;我们是否可以通过主动模式来强制它上传(与命令行ftp客户端一样)?
.Net Reflector会告诉你答案。 :)尽管MSDN文档更容易。 http://msdn.microsoft.com/en-us/library/system.net.ftpwebrequest_members(v=VS.80).aspx – 2011-03-22 16:01:34