存在程序崩溃bug问题

[Corps-Cy]

在程序建立连接后出现异常 导致服务端崩溃

2020/08/01 14:05:00.324|DEBUG|===== FastTunnel Client Start =====
2020/08/01 14:05:00.934|DEBUG|通信已建立
2020/08/01 14:05:01.071|INFO|From Server:
=====隧道已建立成功，可通过以下方式访问内网服务=====

http://test.test.cc:1270 => 127.0.0.1:8001
test.cc:1273 => 127.0.0.1:22
test.cc:1274 => 192.168.0.91:3389

====================================================
2020/08/01 14:05:01.071|ERROR|From Server:Object reference not set to an instance of an object.
2020/08/01 14:05:15.959|DEBUG|last heart recived 15.015728900000001s ago
2020/08/01 14:05:15.973|DEBUG|已退出登录

2020/08/01 14:05:15.994|DEBUG|通信已建立
2020/08/01 14:05:15.994|ERROR|System.Net.Sockets.SocketException (10004): 一个封锁操作被对 WSACancelBlockingCall 的调用 中断。
at System.Net.Sockets.Socket.Receive(Byte[] buffer)
at FastTunnel.Core.Core.FastTunnelClient.ReceiveServer(Object obj) in D:\Github\FastTunnel\FastTunnel.Core\Core\SuiDaoClient.cs:line 197

经过仔细排查后 发现位于处，可能指令分割后恰巧left变量为空 导致重复进行HandleWords函数中，且在后续逻辑中进行序列化时 失败

另有一点 建议 当我客户端远程到域名服务器时，需要考虑如果不是ip参数 需要考虑到域名dns解析，否则异常
2020/08/01 14:03:53.409|DEBUG|===== FastTunnel Client Start =====
2020/08/01 14:03:58.601|ERROR|An invalid IP address was specified.

代码位于处，可判断是否为ip或域名

[SpringHgui]

感谢提的建议

[SpringHgui]

客户端远程到域名服务器时，需要考虑如果不是ip参数 需要考虑到域名dns解析

现已支持

[Corps-Cy]

当客户端异常断开连接时 服务会存在崩溃关闭

[SpringHgui]

确实存在这个问题

[SpringHgui]

崩溃的问题已解决

[Corps-Cy]

服务端仍存在异常退出问题,当客户端通过服务端后 由另一个客户端进行远程登陆，主动断开连接时 服务端会异常退出

[root@VM_0_7_centos NasService]# docker logs nasservice
2020/08/17 13:51:51.055|DEBUG|===== FastTunnel Server Start =====
2020/08/17 13:51:51.098|INFO|Application started. Press Ctrl+C to shut down.
2020/08/17 13:51:51.103|INFO|Hosting environment: Production envName=Production
2020/08/17 13:51:51.107|INFO|Content root path: /src contentRoot=/src
2020/08/17 13:58:50.023|ERROR|接收客户端异常 -> 退出登录 Connection reset by peer
2020/08/17 14:01:25.559|ERROR|接收客户端异常 -> 退出登录 Connection reset by peer
Unhandled exception. System.Net.Sockets.SocketException (32): Broken pipe
at System.Net.Sockets.Socket.Send(Byte[] buffer)
at FastTunnel.Core.Extensions.SocketExtension.Send[T](Socket socket, Message1 message) at FastTunnel.Core.Handlers.LoginHandler.<>c__DisplayClass7_0.<HandleLogin>b__0(Socket client, SSHHandlerArg local) at FastTunnel.Core.AsyncListener1.AcceptCallback(IAsyncResult ar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback()
at System.Net.ContextAwareResult.<>c.b__15_0(Object s)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionCallback(Int32 numBytes, SocketError errorCode)
at System.Net.Sockets.AcceptOverlappedAsyncResult.CompletionCallback(IntPtr acceptedFileDescriptor, Byte[] socketAddress, Int32 socketAddressLen, SocketError errorCode)
at System.Net.Sockets.SocketAsyncContext.AcceptOperation.InvokeCallback(Boolean allowPooling)
at System.Threading.ThreadPoolWorkQueue.Dispatch()