my_server.c

这是一个linux下的网络编程

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

#define SIZE 1024
#define BACKLOG 10
#define SERVPORT 3333

int main(int argc,char **argv)
{
   int ret;
   int res;
   int re;
   int client_fd;
   int sin_size;
   char buf[SIZE];
   struct sockaddr_in server,client;

   ret=socket(AF_INET,SOCK_STREAM,0);
   if(-1 == ret)
   {
       printf("socket failure \n");
       exit(0);
   }
   printf("socket success socket id =%d \n",ret);
   server.sin_family=AF_INET;
   server.sin_port=htons(SERVPORT);
   server.sin_addr.s_addr=INADDR_ANY;
   bzero(&(server.sin_zero),8);
   res=bind(ret,(struct sockaddr*)&server,sizeof(struct sockaddr));
   if(-1 == res)
   {
        printf("bind failure\n");
        exit(0);
   }
   printf("bind success\n");
   res=listen(ret,BACKLOG);
   if(-1 == res)
   {
       printf("listen failure\n");
       exit(0);
   }
   printf("listen ........\n");
   client_fd=accept(ret,(struct sockaddr*)&client,&sin_size);
   if(-1 == client_fd)
   {
       printf("accept is failure\n");
       exit(0);
   }
   printf("accept is success\n");
   while(1)
   {
       re=read(client_fd,buf,512);
       if(0 == re)
         {
          printf("recevie is %d byte and the client is end\n",re);
           break;
         }
       printf("%s",buf);
       memset(buf,0,sizeof(buf));
   }
   close(ret);
   return 0;
}