我正在使用此FtpClient庫從WinForms應用程序連接到大型機。我正在使用thread.Sleep線程在開始讀取之前等待響應,否則它會凍結。有沒有其他方法可以做到這一點?插槽讀取之前的Thread.Sleep()的替代方法
public void Login()
{
if (this.loggedin) this.Close();
Debug.WriteLine("Opening connection to " + this.server, "FtpClient");
IPAddress addr = null;
IPEndPoint ep = null;
try
{
this.clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
addr = Dns.Resolve(this.server).AddressList[0];
ep = new IPEndPoint(addr, this.port);
this.clientSocket.Connect(ep);
}
catch (Exception ex)
{
// doubtfull
if (this.clientSocket != null && this.clientSocket.Connected) this.clientSocket.Close();
throw new FtpException("Couldn't connect to remote server", ex);
}
**Thread.Sleep(4000);**
this.readResponse();
...
}
private void readResponse()
{
this.message = "";
this.result = this.readLine();
if (this.result.Length > 3)
this.resultCode = int.Parse(this.result.Substring(0, 3));
else
this.result = null;
}
private string readLine()
{
while (true)
{
this.bytes = clientSocket.Receive(this.buffer, this.buffer.Length, 0);
this.message += ASCII.GetString(this.buffer, 0, this.bytes);
if (this.bytes < this.buffer.Length) break;
}
string[] msg = this.message.Split('\n');
if (this.message.Length > 2)
{
this.message = msg[msg.Length - 2];
try { response = msg[msg.Length - 3]; }
catch { }
}
else
{
this.message = msg[0];
}
if (this.message.Length > 4 && !this.message.Substring(3, 1).Equals(" ")) return this.readLine();
if (this.verboseDebugging)
{
for (int i = 0; i < msg.Length - 1; i++)
{
Debug.Write(msg[i], "FtpClient");
}
}
return message;
}
public void sendCommand(String command)
{
if (this.verboseDebugging) Debug.WriteLine(command, "FtpClient");
Byte[] cmdBytes = Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());
clientSocket.Send(cmdBytes, cmdBytes.Length, 0);
this.readResponse();
}
它的工作用於登錄,但在發送其他命令時(上傳/下載),我收到此錯誤「在先前的異步調用正在進行時無法阻止此套接字上的調用。」。 – user558138 2011-01-28 09:21:06
@ user558138:抱歉忘了說你需要調用`EndConnect()` – abatishchev 2011-01-28 09:51:10