Question

SOCKET s;   // Create a SOCKET for listening for
// incoming connection requests.
SOCKET new_socket;  // create a socket for accepting incoming connection
uint16 port =18001;  

void CreateSocket()
{
  int sin_size; 
  WSADATA wsa;
  struct sockaddr_in server, master;  // creating a socket address structure: structure contains ip address and port number


  printf("Initializing Winsock\n");
  if(WSAStartup(MAKEWORD(2,2), &wsa)!=0)
  {
    printf("Failed Error Code: %d", WSAGetLastError());
    //return -1;
  }
  printf("Initialised\n");


  //CREATING a SOCKET

  if ((s = socket(AF_INET, SOCK_STREAM, 0)) == -1)
  {
    printf("Could not Create Socket\n");
    //return 0;
  }
  printf("Socket Created\n");

  server.sin_addr.s_addr = inet_addr("192.168.0.1");
  server.sin_family = AF_INET;     
  server.sin_port = htons(port); 



  //Binding between the socket and ip address

  if(bind (s, (struct sockaddr *) &server, sizeof(server)) == SOCKET_ERROR)
  {
    printf("Bind failed with error code: %d", WSAGetLastError());
  }
  puts("Bind Done");


  //Listen to incoming connections
  listen(s, 3);


  //Accepting the incoming connection


  sin_size = sizeof(struct sockaddr_in);

  new_socket = accept(s, (struct sockaddr *)&master, &sin_size);

  printf("\n I got a connection from (%s , %d)",
    inet_ntoa(master.sin_addr),ntohs(master.sin_port));
  closesocket(s);


  //new_socket = accept(s, NULL, NULL);

  if (new_socket == INVALID_SOCKET)
  {
    printf("accept failed with error: %ld\n", WSAGetLastError());
    closesocket(new_socket);
    WSACleanup();
    return 1;
  } 
  else
    printf("Client connected.\n");

我正在创建一个套接字来接受来自Master的连接。当我看到wireshark中的流量时，它第一次连接，响应将作为重置发送，然后再发送主人会发送并重复这样的一段时间。为什么第一个连接命令没有与主站连接？ Wireshark输出

1：请求：90 72.170764 192.168.0.1 192.168.0.2 TCP 18001＆gt; 63789   [SYN，ACK] Seq = 0 Ack = 1 Win = 8192 Len = 0 MSS = 1460 WS = 8 SACK_PERM = 1

2：响应：91 72.172839 192.168.0.2 192.168.0.1 TCP 63789＆gt;   18001 [ACK] Seq = 1 Ack = 1 Win = 65536 Len = 0

如何解决套接字连接？

0 个答案: