请版主大侠高手帮忙呀!!

homeboy · 发表于 2003-11-25 15:45:28

在下有一道难题想请版主大侠或高手指教!!谢谢!!
题目要求是:在LINUX下实现多用户访问服务器的程序.
下面第一个是服务器端(server.c)的程序,第二个是客户端(client.c);但我编的这个只能实现一个用户来访问服务器的功能,所以还请哪们高手帮着看看:应如何修改才能实现多用户访问服务器的功能.谢谢......

服务器端(SERVER.C)

#include<sys/socket.h>
#include<sys/types.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<string.h>
#include<stdio.h>
#include<stdlib.h>
#include<netdb.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sys/ioctl.h>
#include<errno.h>
#include<signal.h>

main()
{
      fd_set rfds;
      FD_ZERO(&rfds);
      FD_SET(0,&rfds);

      char buf[100];
      int listener=socket(AF_INET, SOCK_STREAM, 0);
      struct sockaddr_in  svr_addr;
      bzero((void*)&svr_addr, sizeof(svr_addr));
      svr_addr.sin_family=AF_INET;
      svr_addr.sin_port=htons(12345);
      svr_addr.sin_addr.s_addr=INADDR_ANY;
      bind(listener, (struct sockaddr*)&svr_addr, sizeof(svr_addr));
      listen(listener, 10);
      puts("server started\r\n");

      struct sockaddr_in cli_addr;
      socklen_t len=sizeof(cli_addr);
      int cli_fd=accept(listener, (struct sockaddr*)&cli_addr, &len);
      FD_SET(cli_fd,&rfds);
      while(1)
      {
      FD_SET(0,&rfds);
      FD_SET(cli_fd,&rfds);
      select(cli_fd+1,&rfds,0,0,0);
            if(FD_ISSET(0,&rfds)){
               ssize_t count=read(0,buf,sizeof(buf));
               send(cli_fd,buf,count,0);
            }
            if(FD_ISSET(cli_fd,&rfds)){
               int count=recv(cli_fd,buf,sizeof(buf),0);
               if(count<=0)break;
               write(1,buf,count);
            }
            }


      close(cli_fd);

      close(listener);

客户端(client.c)

#include<sys/socket.h>
#include<sys/types.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<string.h>
#include<stdio.h>
#include<stdlib.h>
#include<sys/select.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<arpa/inet.h>
#include<netinet/in.h>
#include<string.h>
#include<stdio.h>
#include<stdlib.h>
#include<netdb.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<sys/select.h>
#include<sys/ioctl.h>
#include<errno.h>
#include<signal.h>

main()
{
      fd_set rfds;
      FD_ZERO(&rfds);
      FD_SET(0,&rfds);

      char buf[100];
      int client = socket(AF_INET,SOCK_STREAM,0);
      struct sockaddr_in svr_addr;
      bzero((void *) &svr_addr, sizeof(svr_addr));
      svr_addr.sin_family = AF_INET;
      svr_addr.sin_port = htons(12345);
      svr_addr.sin_addr.s_addr = inet_addr("xxx.xxx.xxx.xxx");
      connect(client, (struct sockaddr *) &svr_addr, sizeof(svr_addr));
      FD_SET(client,&rfds);
      while (1)
         {
         FD_SET(client,&rfds);
FD_SET(0,&rfds);
            select(client+1,&rfds,NULL,NULL,NULL);
            if(FD_ISSET(0,&rfds)){
               ssize_t count=read(0,buf,sizeof(buf));
               send(client,buf,count,0);
            }

            if(FD_ISSET(client,&rfds)){

               int count=recv(client,buf,sizeof(buf),0);
               if(count<=0)break;
               write(1,buf,count);

            }
      }
      close(client);

}

wulfgang · 发表于 2003-11-25 17:06:41

why don't you use xinetd or tcpserver ?

homeboy · 发表于 2003-11-25 17:29:36

这位大侠,您说的那两种方法,在下以后会尝试,但眼下是先解决当前问题!!谢谢

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