TCP连接失败

我在使用connect()和read()函数的简单TCP套接字时遇到问题。如果我先启动服务器,然后启动客户机,这个程序就会工作。但是,当我首先启动客户机时,它会继续尝试连接到服务器,然后当我启动服务器时,它会连接,但随后的读取会返回0字节。这意味着服务器关闭了套接字,但调试语句不支持这一点。

我尝试让客户机不断尝试连接到6380端口上的服务器,然后读取数据。如果连接断开,客户端将再次尝试重新连接。我已经为插座设置了这样的地址。还有什么我不知道的吗?

服务器的源代码

//***** SERVER *****
#include <iostream>
#include "SocketAdapter.h"
#include "SocketServer.h"
#include <errno.h>
#include <string.h>

unsigned char buffer[] = "123123123";

int main()
{
   SocketAdapter  socket;
   SocketServer   server(6380);

   server.Start();
   std::cout << "Wait for Connection" << std::endl;
   server.WaitForConnection(socket);
   std::cout << "Start to Send Data" << std::endl;

   while(1)
   {
      std::cout << "Sending Data   ";
      int bytesSent = socket.Send(buffer, 10);
      std::cout << "byteSent = " << bytesSent << std::endl;
      if (bytesSent == -1)
      {
         std::cout << "Errno (" << errno << ") - " << strerror(errno) << std::endl;
      }

      sleep(1);
   }//end while

   std::cout << "Ending Server" << std::endl;
   socket.Close();

   return 0;
}

客户端的源代码

// ***** SIMPLE CLIENT ******
#include <iostream>
#include "SocketAdapter.h"
#include "SocketClient.h"
#include <string.h>
#include <errno.h>

int main()
{
   SocketAdapter  socket;
   SocketClient   client(6380, "127.0.0.1");

   unsigned char buffer[1024];


   while(1)
   {
      client.Start();

      //Loop till we connect to Server
      while( !client.Connect(socket) )
      {
         std::cout << "Trying to connect to server." << std::endl;
         sleep(1);
      }

      std::cout << "Connected to Server" << std::endl;

      //Read till we get a timeout
      while(1)
      {
         int bytesRead = socket.Recv(buffer, 10,2000);
         if (bytesRead != 10)
         {
            std::cout << "   Failed to Read" << std::endl;
            std::cout << "   bytesRead = " << bytesRead << std::endl;
            std::cout << "   Errno (" << errno << ") - "
                      << strerror(errno) << std::endl;
            break;
         }

         std::cout << "buffer = " << buffer << std::endl;
         usleep(250000);
      }

      std::cout << "Something went wrong, restart" << std::endl;
   }

   return 0;
}

./Server 
Wait for Connection
Start to Send Data
Sending Data   byteSent = 10

./Client 
Trying to connect to server.
Trying to connect to server.
Connected to Server
   Failed to Read
   bytesRead = 0
   Errno (107) - Transport endpoint is not connected
Something went wrong, restart
Close Socket
Close Socket File Descriptor
Connected to Server
Trying to Recv on a closed socket
Return Value = -1
Errno        = Connection reset by peer

   Failed to Read
   bytesRead = -3
   Errno (104) - Connection reset by peer
Something went wrong, restart
Close Socket
Close Socket File Descriptor
Socket cannot shutdown!
Return Value = -1
Errno        = Transport endpoint is not connected

Trying to connect to server.
Close Socket
Close Socket File Descriptor
Socket cannot shutdown!
Return Value = -1
Errno        = Transport endpoint is not connected