#include <myhead.h>
#define IP "192.168.124.73"
#define PORT 8888
int main(int argc, const char *argv[])
{
//创建流式套接字
int sfd = socket(AF_INET,SOCK_STREAM,0);
if(sfd < 0){
fprintf(stderr,"line=%d",__LINE__);
perror("socket");
return -1;
}
printf("创建流式套接字成功 sfd=%d __%d__",sfd,__LINE__);
//允许端口号被重复使用
int reuse = 1;
if(setsockopt(sfd,SOL_SOCKET,SO_REUSEADDE,&reuse,sizeof(reuse) < 0)){
fprintf(stderr,"line=%d",__LINE__);
perror("setsockopt");
return -1;
}
//填充服务器的地址信息结构体,真实的地址信息结构体根据地址族制定
//AF_INET -->man 7 ip
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sin.sin_port = htons(PORT);
sin.sin_addr.s_addr = inet_addr(IP);
//绑定服务器自身的地址信息
if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin)) < 0){
fprintf(stderr,"line:%d",__LINE__);
perror("bind");
return -1;
}
printf("bind success __%d__\n",__LINE__);
//套接字设置为被动监听
if(listen(sfd,128) < 0 ){
fprintf(stderr,"line:%d",__LINE__);
perror("listen");
return -1;
}
printf("listen success __%d__\n",__LINE__);
//获取链接成功的套接字
struct sockaddr_in cin; //存储客户端信息
socklen_t addrlen = sizeof(cin);
//会从已经完成链接队列的对头获取一个客户端的信息,生成一个新的文件描述符
//accept(sfd,NULL,NULL)
int newfd = accept(sfd,(struct sockaddr*)&cin,&addrlen);
if(newfd < 0){
fprintf(stderr,"line:%d",__LINE__);
perror("accept");
return -1;
}
printf("[%s:%d]newfd=%d :%s __%d__\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),newfd,buf,__LINE__);
//接收
char buf[128];
ssize_t res;
while(1){
bzero(buf,sizeof(buf));
res = recv(newfd,buf,sizeof(buf),0);
if(res < 0){
fprintf(stderr,"line:%d",__LINE__);
perror("recv");
return -1;
}
else if(res == 0){
printf("[%s:%d]newfd=%d :%s __%d__\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),newfd,buf,__LINE__);
break;
}
printf("[%s:%d]newfd=%d :%s __%d__\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),newfd,buf,__LINE__);
//发送
strcat(buf,"I GET IT!");
if(send(newfd,buf,sizeof(buf),0) < 0){
fprintf(stderr,"line:%d",__LINE__);
perror("send");
return -1;
}
printf("send success __%d__\n",__LINE__);
}
//关闭文件描述符
close(newfd);
close(sfd);
return 0;
}