Linux----网络编程（TCP网络通信客户端服务器编程实现多进程）

1、服务器ser.c

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 #include <unistd.h>
  4 #include <assert.h>
  5 #include <string.h>
  6 #include <sys/socket.h>
  7 #include <netinet/in.h>
  8 #include <arpa/inet.h>
  9 #include <pthread.h>
 10 
 11 //客户端服务器实现多进程
 12 void* fun(void * arg)
 13 {
 14     int c = (int)arg;
 15     while(1)
 16     {
 17         char buff[128] = {0};
 18         int n = recv(c, buff, 127, 0);
 19         if(n <= 0)
 20         {
 21             break;
 22             }
 23         printf("buff(%d)=%s\n",c,buff);
 24         send(c, "ok", 2, 0);
 25         }
 26     printf("one client over\n");
 27     close(c);
 28     }
 29 
 30 int main()
 31 {
 32     int sockfd = socket(AF_INET, SOCK_STREAM, 0);
 33     assert(sockfd != -1);
 34 
 35     struct sockaddr_in saddr, caddr;
 36     memset(&saddr, 0, sizeof(saddr));
 37     saddr.s