Linux侧的server代码,

#include <netinet/in.h>  
#include <sys/types.h>  
#include <sys/socket.h>  
#include <stdio.h>      
#include <stdlib.h>     
#include <string.h>     

#define HELLO_WORLD_SERVER_PORT    4000
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024

int main(int argc, char **argv)
{
    struct sockaddr_in server_addr;
 int server_socket;
 int opt = 1;
 
    bzero(&server_addr,sizeof(server_addr));
 
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htons(INADDR_ANY);
    server_addr.sin_port = htons(HELLO_WORLD_SERVER_PORT);

 /* create a socket */
    server_socket = socket(PF_INET,SOCK_STREAM,0);
    if( server_socket < 0)
    {
        printf("Create Socket Failed!");
        exit(1);
    }
 
    /* bind socket to a specified address*/
    setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
    if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
    {
        printf("Server Bind Port : %d Failed!", HELLO_WORLD_SERVER_PORT);
        exit(1);
    }

    /* listen a socket */
    if(listen(server_socket, LENGTH_OF_LISTEN_QUEUE))
    {
        printf("Server Listen Failed!");
        exit(1);
    }
 
 /* run server */
    while (1)
    {
        struct sockaddr_in client_addr;
  int client_socket; 
        socklen_t length;
  char buffer[BUFFER_SIZE];

  /* accept socket from client */
  length = sizeof(client_addr);
        client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length);
        if( client_socket < 0)
        {
            printf("Server Accept Failed! ");
            break;
        }
      
  /* receive data from client */
  while(1)
  {
   bzero(buffer, BUFFER_SIZE);
   length = recv(client_socket, buffer, BUFFER_SIZE, 0);
   if (length < 0)
   {
    printf("Server Recieve Data Failed! ");
    break;
   }
  
   if('q' == buffer[0])
   {
    printf("Quit from client! ");
    break;
   }
  
   printf("%s ", buffer);
  }
 
        close(client_socket);
    }
 
    close(server_socket);
    return 0;
}

  Windows侧的代码使用vc6.0编译可以,而Linux侧的代码用gccok了,即gcc server.c -o server。首先,在linux侧输入./server,然后打开Widnows侧的client程序,然后在Windows侧的每一个字符输入都会在Linux打印出来。如果想退出,输入q即可。但是此时server不会退出,它在等待下一个client的通信,继续服务于大家,是这么简单。

  这里的server和client代码是根据网友的代码修改而来,一并表示感谢。如有侵权,请邮件告知。