FTP tcpclient 上传文件
作者:互联网
var host="localhost";
var port = 21;
var u="username";
var p="password";
var remoteDir = "filesync";
var fp="C:\\Users\\admin\\Desktop\\新建文本文档.txt";
await Upload();
async Task Upload()
{
var res = "";
remoteDir = remoteDir.Trim('/');
var filename = Path.GetFileName(fp);
TcpClient tcp = new TcpClient();
tcp.Connect(host, port);
NetworkStream stream = tcp.GetStream();
if (tcp.Connected.ToString() != "True")
{
Console.WriteLine("Connect Failed!");
Console.ReadLine();
return;
}
await ReadTcp(stream);
await cmd(stream, "USER " + u);
await cmd(stream, "PASS " + p);
await cmd(stream, "FEAT");
await cmd(stream, "TYPE I");
res = await cmd(stream, "CWD /" + remoteDir);
if (res.StartsWith("550 ")) await cmd(stream, "MKD /" + remoteDir);
await cmd(stream, "CWD /" + remoteDir);
res = await cmd(stream, "PASV");
var commands = res.Split(',');
if (commands.Length > 4)
{
int port2 = int.Parse(commands[4]) * 256 + int.Parse(commands[5].Trim('\r', '\n', ')', '('));
TcpClient tcpup = new TcpClient();
tcpup.Connect(host, port2);
var req = tcpup.GetStream();
res = await cmd(stream, "STOR " + filename);
if (!res.StartsWith("150 "))
{
throw new Exception("Upload PASV port Error!");
}
FileStream fs = new FileStream(fp, FileMode.Open, FileAccess.Read);
fs.CopyTo(req);
req.Flush();
fs.Close();
tcpup.Dispose();
}
await ReadTcp(stream);
stream.Close();
tcp.Close();
}
async Task<string> cmd(NetworkStream stream, string text)
{
WriteTcp(stream,text);
return await ReadTcp(stream);
}
void WriteTcp(NetworkStream stream, string text)
{
if (!text.EndsWith("\r\n")) text += "\r\n";
stream.Write(Encoding.UTF8.GetBytes(text));
}
async Task<string> ReadTcp(NetworkStream stream, bool print=true)
{
MemoryStream ms = new MemoryStream();
do
{
await Task.Delay(100);
var bytes=new byte[4096];
var len= stream.Read(bytes, 0, bytes.Length);
ms.Write(bytes, 0, len);
} while (stream.DataAvailable);
var text= Encoding.UTF8.GetString(ms.ToArray());
if(print) Console.WriteLine(text);
return text;
}
标签:FTP,cmd,stream,tcpclient,text,await,res,var,上传 来源: https://www.cnblogs.com/yzpopulation/p/16382987.html