使用winApi创建一个tcpServer

• 该 server ，每隔一秒法一条消息

  #include <cstdio>
  #include <winsock2.h>
  #include <windows.h>
  #include <process.h>
  
  void HandleClient(void* clientSocket);
  
  int main() {
  WSADATA wsaData;
  SOCKET serverSocket, clientSocket;
  struct sockaddr_in serverAddr{}, clientAddr{};
  int clientAddrLen = sizeof(clientAddr);
  int messageCounter = 1;  // Initialize the message counter
  
  // Initialize Windsock
  if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
      perror("WSAStartup failed");
      return 1;
  }
  
  // Create socket
  serverSocket = socket(AF_INET, SOCK_STREAM, 0);
  if (serverSocket == INVALID_SOCKET) {
      perror("Failed to create socket");
      WSACleanup();
      return 1;
  }
  
  // Bind
  serverAddr.sin_family = AF_INET;
  serverAddr.sin_addr.s_addr = INADDR_ANY;
  serverAddr.sin_port = htons(12345);
  
  if (bind(serverSocket, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) == SOCKET_ERROR) {
      perror("Bind failed");
      closesocket(serverSocket);
      WSACleanup();
      return 1;
  }
  
  // Listen
  if (listen(serverSocket, 5) == SOCKET_ERROR) {
      perror("Listen failed");
      closesocket(serverSocket);
      WSACleanup();
      return 1;
  }
  
  printf("Server is listening on port 12345...\n");
  
  while (1) {
      // Accept connection
      clientSocket = accept(serverSocket, (struct sockaddr *)&clientAddr, &clientAddrLen);
      if (clientSocket == INVALID_SOCKET) {
          perror("Accept failed");
          closesocket(serverSocket);
          WSACleanup();
          return 1;
      }
  
      // Create a new thread to handle the client
      _beginthread(HandleClient, 0, (void*)clientSocket);
  
  }
  
  closesocket(clientSocket);
  
  WSACleanup();
  
  
  return 0;
  }
  
  
  void HandleClient(void* clientSocket) {
  auto socket = (SOCKET)clientSocket;
  int messageCounter = 1;
  
  while (1) {
      // Send message with an increasing number
      char message[50];
      sprintf(message, "Message %d: Hello, client!\n", messageCounter);
      int bytesSent = send(socket, message, strlen(message), 0);
      if (bytesSent <= 0) {
          // Error or connection closed, close the client socket
          closesocket(socket);
          return;
      }
      printf("Message sent to client: %s", message);
  
      // Increment the message counter
      messageCounter++;
  
      Sleep(1000);
  }
  }
  
  
  
  

• CmakeLists.txt

  cmake_minimum_required(VERSION 3.26)
  project(test)
  
  set(CMAKE_CXX_STANDARD 17)
  
  add_executable(test main.cpp)
  
  # Link against the Winsock library (ws2_32.lib) on Windows
  if (WIN32)
  target_link_libraries(test wsock32 ws2_32)
  endif ()