假期day8

多进程并发服务器

#include 
#define PORT 8888
#define IP "192168.31.244"


//用于回收僵尸进程
void handler(int signo)
{
	if(signo==SIGCHLD)
	{
		while(waitpid(-1,NULL,WNOHANG)>0);
	}
}

int deal_msg(int newfd,struct sockaddr_in cin)
{
	char rbuf[128]="";
	while(1)
	{
		bzero(rbuf,sizeof(rbuf));
		int res=recv(newfd,rbuf,sizeof(rbuf),0);
		
	}
	close(newfd);
	return 0;
}


int main(int argc, const char *argv[])
{
	//将信号进行绑定
	if(signal(SIGCHLD,handler)==SIG_ERR)
	{
		perror("signal error");
		return -1;
	}
	//创建套接字
	int sfd=-1;
	if((sfd=socket(AF_INET,SOCK_STREAM,0))==-1)
	{
		perror("socket error");
		return -1;
	}
	//端口号快速重用
	int reuse=1;
	if(setsockopt(sfd,SOL_SOCKET,SO_REUSEADDR,&reuse,sizeof(reuse))==-1)
	{
		perror("setsockopt error");
		return -1;
	}
	//绑定地址信息结构体
	struct sockaddr_in sin;
	sin.sin_family=AF_INET;
	sin.sin_port=htons(PORT);
	sin.sin_addr.s_addr=inet_addr(IP);
	if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
	{
		perror("bind error");
		return -1;
	}
	//开启监听
	if(listen(sfd,128)==-1)
	{
		perror("listen error");
		return -1;
	}
	//接收连接请求
	struct sockaddr_in cin;
	socklen_t socklen=sizeof(cin);
	int newfd=-1;
	pid_t pid=-1;
	while(1)
	{
		if((newfd=accept(sfd,(struct sockaddr*)&cin,&socklen))==-1)
		{
			perror("accept error");
			return -1;
		}
		pid=fork();
		if(pid>0)
		{
			//父进程
			close(newfd);
		}
		else if(pid==0)
		{
			//子进程
			close(sfd);
			deal_msg(newfd,cin);//调用函数
			exit(EXIT_SUCCESS);
		}
		else
		{
			perror("fork error");
			return -1;
		}
	}
	close(sfd);
	return 0;
}

多线程并发服务器

#include 
#define PORT 8888
#define IP "192168.31.244"


struct pthread_ds
{
	int newfd;
	struct sockaddr_in cin;
};

void *deal_msg(void *arg)
{
	int newfd=((struct pthread_ds*)arg)->newfd;
	struct sockaddr_in cin=((struct pthread_ds*)arg)->cin;
	//收发数据
	char rbuf[128]="";
	while(1)
	{
		bzero(rbuf,sizeof(rbuf));
		int res=recv(newfd,rbuf,sizeof(rbuf),0);
		
	}
	close(newfd);
	pthread_exit(NULL);
}

int main(int argc, const char *argv[])
{
	
	//创建套接字
	int sfd=-1;
	if((sfd=socket(AF_INET,SOCK_STREAM,0))==-1)
	{
		perror("socket error");
		return -1;
	}
	//端口号快速重用
	int reuse=1;
	if(setsockopt(sfd,SOL_SOCKET,SO_REUSEADDR,&reuse,sizeof(reuse))==-1)
	{
		perror("setsockopt error");
		return -1;
	}
	//绑定地址信息结构体
	struct sockaddr_in sin;
	sin.sin_family=AF_INET;
	sin.sin_port=htons(PORT);
	sin.sin_addr.s_addr=inet_addr(IP);
	if(bind(sfd,(struct sockaddr*)&sin,sizeof(sin))==-1)
	{
		perror("bind error");
		return -1;
	}
	//开启监听
	if(listen(sfd,128)==-1)
	{
		perror("listen error");
		return -1;
	}
	//接收连接请求
	struct sockaddr_in cin;
	socklen_t socklen=sizeof(cin);
	int newfd=-1;
	pthread_t tid=-1;
	while(1)
	{
		if((newfd=accept(sfd,(struct sockaddr*)&cin,&socklen))==-1)
		{
			perror("accept error");
			return -1;
		}
		
		struct pthread_ds info={newfd,cin};
		if(pthread_create(&tid,NULL,deal_msg,&info)!=0)
		{
			printf("tid create error\n");
			return -1;
		}
		pthread_detach(tid);//设置成分离态，由系统回收
	}
	close(sfd);
	return 0;
}