c# FTP下载大文件 socket.receive卡死 如何解决

[dave2804933]

大概的代码如下:

this.sendCommand("RETR " + strRemoteFileName);
                if (this.mIntReplyCode != 150 && this.mIntReplyCode != 125 && this.mIntReplyCode != 226 && this.mIntReplyCode != 250)
                {
                    fileStream2.Close();
                    throw new IOException(this.mStrReply.Substring(4));
                }

                while (true)
                {
                    try
                    {
                        int num2 = socket2.Receive(this.mBuffer, this.mBuffer.Length, SocketFlags.None);
                        if (num2 + completeFileSize >= downFileSize)
                        {
                            num2 = (int)(downFileSize - completeFileSize);
                        }
                        completeFileSize += num2;
                        fileStream2.Write(this.mBuffer, 0, num2);
                        fileStream2.Flush();

                        if (completeFileSize == downFileSize)
                        {
                            break;
                        }
                    }
                    catch (Exception e)
                    {
                        throw new IOException(e.Message);
                    }
                }

有时候下载大文件时会卡死在int num2 = socket2.Receive(this.mBuffer, this.mBuffer.Length, SocketFlags.None);
小文件没有问题,是什么原因造成的?

[这个还能被注册？]

this.sendCommand("RETR " + strRemoteFileName);
                if (this.mIntReplyCode != 150 && this.mIntReplyCode != 125 && this.mIntReplyCode != 226 && this.mIntReplyCode != 250)
                {
                    fileStream2.Close();
                    throw new IOException(this.mStrReply.Substring(4));
                }

                while (true)
                {
                    try
                    {
                        int num2 = socket2.Receive(this.mBuffer, this.mBuffer.Length, SocketFlags.None);
                        if (num2 + completeFileSize >= downFileSize)
                        {
                            num2 = (int)(downFileSize - completeFileSize);
                        }
                        completeFileSize += num2;
                        fileStream2.Write(this.mBuffer, 0, num2);
                        fileStream2.Flush();

                       System.Threading.Thread.CurrentThread.Join(20);

                        if (completeFileSize == downFileSize)
                        {
                            break;
                        }
                    }
                    catch (Exception e)
                    {
                        throw new IOException(e.Message);
                    }
                }

试试

[dave2804933]

加个System.Threading.Thread.CurrentThread.Join(20);这个吗？

[gamedevboy]

简单处理的话,加 Task.Run(()=> { socket.Recevice(....); }); 复杂的话用Socket.ReceiveAsync