Java客户端与C++服务器端通信

java客户端代码如下：

创建socket并绑定

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.InetSocketAddress;import java.net.Socket;public class JavaClient {    public static void main(String [] args) throws InterruptedException, IOException    {        InetSocketAddress addr = new InetSocketAddress("127.0.0.1", 5678); //创建socket        Socket sock = new Socket();          sock.connect(addr);//连接服务器        BufferedReader is = null;        PrintWriter os = null;        os = new PrintWriter(sock.getOutputStream()); //管道的写工具        is = new BufferedReader(new InputStreamReader(sock.getInputStream()));  //管道的读工具        BufferedReader user = new BufferedReader(new InputStreamReader(System.in)); //从控制台读取命令的工具        System.out.print("client say:");        String msg = user.readLine();        while(!msg .equals("bye"))        {            os.println(msg);            os.flush();            String echo = is.readLine();            System.out.println(echo);            System.out.print("client say:");            msg = user.readLine();        }        os.close();        is.close();        sock.close();       }   }

C++服务器端代码：

创建socket、绑定端口、监听端口

#include <winsock2.h>  #include <process.h>  #pragma comment(lib, "ws2_32.lib")  #include <list>  std::list<SOCKET> client_list;  void thread_client(void * );  int main(int argc, char * argv[])  {      WSADATA wsadata;      WSAStartup(0x22, &wsadata);      unsigned short sPort = argc>1 ? atoi(argv[1]) : 5678;      int sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);      if (sockfd == INVALID_SOCKET)      {          printf("fail to create socket.\n");          return 1;      }      sockaddr_in saddr;      saddr.sin_addr.s_addr = ADDR_ANY;      saddr.sin_port = htons(sPort);      saddr.sin_family = AF_INET;      if(bind(sockfd, (const sockaddr *)(&saddr), sizeof(saddr)))      {          printf("fail to bind, errno: %d.\n", GetLastError());             DWORD dw = WSAGetLastError();          return 2;      }      if (listen(sockfd, 5))      {          printf("fail to listen.\n");          return 3;       }      printf("Server is listening at [%d].\n"             "Wating for client to connect...\n"             , sPort);      for (;;)      {          sockaddr_in caddr;          int caddr_len = sizeof(caddr);          int client = accept(sockfd, (sockaddr *)&caddr, &caddr_len);          unsigned char * pAddr = (unsigned char *)&caddr.sin_addr.s_addr;          printf("[%d.%d.%d.%d : %d] coming.\n", pAddr[0], pAddr[1], pAddr[2], pAddr[3], ntohs(caddr.sin_port));          _beginthread(thread_client, 0, (void *)client);          client_list.push_back(client);      }      return 0;  }  void thread_client(void * args)  {      SOCKET client = (int)args;      sockaddr_in caddr;      int caddr_len = sizeof(caddr);      getpeername(client, (sockaddr *)&caddr, &caddr_len);      unsigned char * pAddr = (unsigned char *)&caddr.sin_addr.s_addr;      unsigned short usPort = ntohs(caddr.sin_port);      for (;;)      {          char szMsg [0x1000] = "";          if (0 >= recv(client, szMsg, sizeof(szMsg)-1, 0))              break;          char szEcho [0x1000] = "";          sprintf(szEcho, "Server Say: [%d.%d.%d.%d:%d] %s"              , pAddr[0], pAddr[1], pAddr[2], pAddr[3]              , usPort              , szMsg);          for (std::list<SOCKET>::iterator it = client_list.begin();                  it != client_list.end();                  it ++)          {              send(*it, szEcho, strlen(szEcho), 0);          }             }  }