网络编程第四天

2023-12-26 20:17:05
tcp套接字客户端
#include "../head.h"
#define IP "192.168.124.29"
#define PORT 8888
struct mallage
{
	int newfd;
	struct sockaddr_in cin;
};
void *callBack(void *arg)
{	char buf[128] = "";
	ssize_t res = 0;

	int newfd = ((struct mallage*)arg)->newfd;
	struct sockaddr_in cin = ((struct mallage*)arg)->cin;
	while(1)
	{
		bzero(buf,sizeof(buf));
		res = recv(newfd,buf,sizeof(buf),0);
		if(res < 0)
		{
			ERR_MSG("recv");
			break;
		}
		else if(0 == res)
		{
			printf("newfd=%d 客户已下线 __%d__\n",newfd,__LINE__);
			printf("%s : %d\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));
			break;
		}
		printf("%s : %d 说:",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));
		printf("%s\n",buf);
		LINE;
		strcat(buf,"^_^");
		if(send(newfd,buf,sizeof(buf),0) < 0)
		{
			ERR_MSG("send");
			break;
		}
		printf("send success");
		LINE;
	}
	close(newfd);
	pthread_exit(NULL);
}
int main(int argc, const char *argv[])
{

	int sfd = socket(AF_INET,SOCK_STREAM,0);
	if(sfd < 0)
	{
		ERR_MSG("socket");
		return -1;
	}
	printf("socket create success sfd=%d __%d__\n",sfd,__LINE__);
	int reuse = 1;
	if(setsockopt(sfd,SOL_SOCKET,SO_REUSEADDR,&reuse,sizeof(reuse)) < 0)
	{
		ERR_MSG("setsockopt");
		return -1;
	}
	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)) < 0)
	{
		ERR_MSG("bind");
		return -1;
	}
	printf("bind success __%d__\n",__LINE__);
	if(listen(sfd,128) < 0)
	{
		ERR_MSG("lsiten");
		return -1;
	}
	printf(" listen success __%d__\n",__LINE__);
	struct mallage info;
	socklen_t addrlen = sizeof(info.cin);
	pthread_t tid;	
	while(1)
	{
		info.newfd = accept(sfd,(struct sockaddr*)&info.cin,&addrlen);
		if(info.newfd < 0)
		{
			ERR_MSG("accept");
			return -1;
		}
		printf("newfd=%d 客户端连接成功 __%d__\n",info.newfd,__LINE__);
		printf("%s : %d\n",inet_ntoa(info.cin.sin_addr),ntohs(info.cin.sin_port));

		if(pthread_create(&tid,NULL,callBack,(void*)&info) != 0)
		{
			fprintf(stderr,"pthread_create faild__%d__\n",__LINE__);
			return -1;
		}
		pthread_detach(tid);
	}
	if(close(sfd) < 0 )
	{
		ERR_MSG("close");
		return -1;
	}

	return 0;
}
udp套接字服务器
#include "../head.h"
int main(int argc, const char *argv[])
{
	int sfd = socket(AF_UNIX,SOCK_DGRAM,0);
	if(sfd < 0)
	{
		ERR_MSG("socket");
		return -1;
	}
	if(access("./Udpunix",F_OK) == 0)
	{
		unlink("./Udpunix");
	}
	struct sockaddr_un sun;
	sun.sun_family 		=AF_UNIX;
	strcpy(sun.sun_path,"./Udpunix");
	if(bind(sfd,(struct sockaddr*)&sun,sizeof(sun)) < 0)
	{
		ERR_MSG("bind");
		return -1;
	}
	printf("bind success __%d__\n",__LINE__);
	
	struct sockaddr_un cun;
	socklen_t addrlen = sizeof(cun);
	char buf[128] = "";
	ssize_t res = 0;
	while(1)
	{
		bzero(buf,sizeof(buf));
		res = recvfrom(sfd,buf,sizeof(buf),0,(struct sockaddr*)&cun,&addrlen);

		if(res < 0)
		{
			ERR_MSG("recvfrom");
			return -1;
		}
		printf("%s\n",buf);
		LINE;
		printf("请回复上帝>>>>");
		fgets(buf,sizeof(buf),stdin);
		if(sendto(sfd,buf,sizeof(buf),0,(struct sockaddr*)&cun,sizeof(cun)) < 0)
		{
			ERR_MSG("send");
			return -1;
		}
		printf("send success");
		LINE;
	}
	if(close(sfd) < 0)
	{
		ERR_MSG("close");
		return -1;
	}

	return 0;
}

文章来源:https://blog.csdn.net/hahhsssds/article/details/135228573
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