用socket函数写的。《unix网络编程》可入门。入门后看看详解。#include#include#include /*包含有htons等函数的头文件*/#include#includevoid main() {
int listenfd,clifd;
long pid;
struct sockaddr_in myaddr,cliaddr;
int ret;
int len;
listenfd=socket(AF_INET,SOCK_STREAM,0);
if (listenfd<0)
{
perror("socket error");
exit(-1);
}
myaddr.sin_family=AF_INET;
myaddr.sin_addr.s_addr=htonl(INADDR_ANY);
myaddr.sin_port=htons(8888);
ret=bind(listenfd,(struct sockaddr *)&myaddr,sizeof(myaddr));
if (ret<0)
{
perror("bind error");
exit(-1);
}
listen(listenfd,10);
len=sizeof(struct sockaddr);
while(1)
{
clifd=accept(listenfd,(struct sockaddr*)&cliaddr,&len);
/*注意accept的第三个参数也是地址*/
if(clifd==-1)
{
perror("accept error");
continue;
}
printf("connect from %s %d",inet_ntoa(cliaddr.sin_addr.s_addr),ntohs(cliaddr.sin_port));
switch(pid=fork())
{
case 0: /*子进程*/
close(listenfd);
;/*子进程进行其他的操作*/
close(clifd);
exit(0);
break;
case -1:
perror("fork error");
break;
default:/*父进程*/
close(clifd);
break;
}
}
} |
