网络编程 0904作业

最新推荐文章于 2025-05-02 18:57:07 发布

m0_68379095

最新推荐文章于 2025-05-02 18:57:07 发布

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文章标签：服务器网络

本文链接：https://blog.youkuaiyun.com/m0_68379095/article/details/141901829

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作业

1、多进程多线程并发服务器，再实现一遍（重点模型）

多进程并发服务器

多进程服务器 PIDserver.c 代码

#include <myhead.h>
#define SERPORT 7777
#define SERIP "192.168.19.128"
#define BACKLOG 10

void hande(int sss)
{
	if(sss==SIGCHLD)
	{
		while(waitpid(-1,NULL,WNOHANG)!=-1);
	}//回收僵尸进程
}

int main(int argc, const char *argv[])
{
	if(signal(SIGCHLD,hande)==SIG_ERR)//捕获子进程退出的信号
	{
		perror("signal");
		return -1;
	}

	//1、创建原始套接字
	int oldfd = socket(AF_INET,SOCK_STREAM,0);
	if(oldfd ==-1)
	{
		perror("socket");
		return -1;
	}

	//端口号快速复用
	int kkk=666;
	if(setsockopt(oldfd,SOL_SOCKET,SO_REUSEADDR,&kkk,sizeof(kkk))==-1)
	{
		printf("setsockopt");
		return -1;
	}
	printf("端口快速复用成功\n");

	struct sockaddr_in sin = {
		.sin_family = AF_INET,
		.sin_port = htons(SERPORT),
		.sin_addr.s_addr = inet_addr(SERIP)
	};

	//2、绑定
	if(bind(oldfd,(struct sockaddr *)&sin,sizeof(sin))==-1)
	{
		perror("bind");
		return -1;
	}

	//3、监听
	if(listen(oldfd,BACKLOG)==-1)
	{
		perror("listen");
		return -1;
	}
	//创建子进程，父进程负责接收客户端请求，子进程负责数据收发
	struct sockaddr_in cin;
	int cinlen = sizeof(cin);

	while(1)
	{
		int newfd = accept(oldfd,(struct sockaddr *)&cin,&cinlen);
		if(newfd==-1)
		{
			perror("accept");
			return -1;
		}
		printf("newfd = %d\n",newfd);
		printf("%s:%d连接成功\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));
		pid_t pid = fork();//创建子进程
		if(pid>0)//父进程
		{
			//close(newfd);//关闭文件描述符
		}
		else if(pid==0)//子进程
		{
			close(oldfd);//关闭旧的文件描述符
			char buff[1024];
			while(1)
			{
				int len = recv(newfd,buff,sizeof(buff),0);
				if(len==0)
				{
					printf("客户端退出\n");
					break;
				}
				printf("服务器收到信息：%s\n",buff);
				strcat(buff,"^_^");
				send(newfd,buff,sizeof(buff),0);
				printf("发送成功\n");
			}
			//close(newfd);//关闭新的文件描述符
			exit(0);//退出子进程
		}
		else{
			perror("fork");
			return -1;
		}
	}
	close(oldfd);
	return 0;
}

多进程客户端 clinet.c 代码

#include <myhead.h>

#define CLIPORT 7777
#define CLIIP "192.168.19.128"
int main(int argc, const char *argv[])
{
	int oldfd = socket(AF_INET,SOCK_STREAM,0);//1、创建原始套节字
	if(oldfd==-1)
	{
		perror("socket");
		return -1;
	}
	//2、bind可选


	//3、连接服务器
	struct sockaddr_in cin = {
		.sin_family = AF_INET,//IPV4通信
		.sin_port = htons(CLIPORT),//端口号转为网络字节序
		.sin_addr.s_addr = inet_addr(CLIIP)//IP地址转为网络字节序
	};

	if(connect(oldfd,(struct sockaddr *)&cin,sizeof(cin))==-1)
	{
		perror("connect");
		return -1;
	}
	printf("连接服务器成功\n");
	char buff[1024] = "";
	while(1)//4、收发消息
	{
		memset(buff,0,sizeof(buff));
		printf("客户端发信息：");
		fgets(buff,sizeof(buff),stdin);
		buff[strlen(buff)-1] = '\0';
		send(oldfd,buff,sizeof(buff),0);//阻塞发送

		recv(oldfd,buff,sizeof(buff),0);//阻塞接收
		printf("收到服务器的消息：%s\n",buff);
	}
	close(oldfd);
	return 0;
}

运行结果：

多线程并发服务器

多线程服务器

#include <myhead.h>
#define SERPORT 6666
#define SERIP "192.168.19.128"
#define BACKLOG 20
typedef struct
{
	int newfd;//存储新文件描述符
	struct sockaddr_in cin;//存储客户端信息
}HMY;

void *fun1(void *sss)
{
	int newfd = ((HMY *)sss)->newfd;
	struct sockaddr_in cin = ((HMY *)sss)->cin;//解析客户端信息
	char buff[1024];
	while(1)
	{
		bzero(buff,sizeof(buff));
		int len = recv(newfd,buff,sizeof(buff),0);
		printf("收到%s:%d的信息：%s\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port),buff);//输出客户端信息
		if(len==0)
		{
			printf("客户端退出\n");
			break;
		}
		strcat(buff,"hongmingyuan");//回个信息
		send(newfd,buff,sizeof(buff),0);
		printf("发送成功\n");
	}
	pthread_exit(NULL);
}
int main(int argc, const char *argv[])
{
	int oldfd = socket(AF_INET,SOCK_STREAM,0);//1、创建套接字
	if(oldfd==-1)
	{
		perror("socket");
		return -1;
	}
	int atao = 8;
	if(setsockopt(oldfd,SOL_SOCKET,SO_REUSEADDR,&atao,sizeof(atao))==-1)
	{
		perror("setsockopt");
		return -1;
	}
	printf("端口号快速复用成功\n");
	struct sockaddr_in sin = {
		.sin_family  =AF_INET,
		.sin_port = htons(SERPORT),
		.sin_addr.s_addr = inet_addr(SERIP)
	};
	if(bind(oldfd,(struct sockaddr *)&sin,sizeof(sin))==-1)//2、绑定
	{
		perror("bind");
		return -1;
	}
	if(listen(oldfd,BACKLOG)==-1)//3、监听成功
	{
		perror("listen");
		return -1;
	}
	printf("监听成功\n");
	struct sockaddr_in cin;
	int cinlen = sizeof(cin);

	HMY MSG;//定义子线程函数的参数
	while(1)
	{
		//accept接收客户端请求
		int newfd = accept(oldfd,(struct sockaddr *)&cin,&cinlen);
		if(newfd==-1)
		{
			perror("accept");
			return -1;
		}
		printf("%s:%d发来请求\n",inet_ntoa(cin.sin_addr),ntohs(cin.sin_port));
		MSG.newfd = newfd;
		MSG.cin = cin;
		//创建子线程与客户端通信
		pthread_t tid;
		if(pthread_create(&tid,NULL,fun1,&MSG)!=0)
		{
			perror("pthread_create");
			return -1;
		}

		//回收子线程资源
		//pthread_join(tid,NULL);//不能使用join回收子线程资源
		pthread_detach(tid);//挂起由系统回收
	}
	//关闭旧的描述符
	close(oldfd);
	return 0;
}

多线程客户端

#include <myhead.h>

#define CLIPORT 6666
#define CLIIP "192.168.19.128"
int main(int argc, const char *argv[])
{
	//1、创建原始套节字
	int oldfd = socket(AF_INET,SOCK_STREAM,0);
	if(oldfd==-1)
	{
		perror("socket");
		return -1;
	}
	//2、bind可选


	//3、连接服务器
	struct sockaddr_in cin = {
		.sin_family = AF_INET,//IPV4通信
		.sin_port = htons(CLIPORT),//端口号转为网络字节序
		.sin_addr.s_addr = inet_addr(CLIIP)//IP地址转为网络字节序
	};

	if(connect(oldfd,(struct sockaddr *)&cin,sizeof(cin))==-1)
	{
		perror("connect");
		return -1;
	}
	printf("连接服务器成功\n");

	char buff[1024] = "";
	while(1)//4、收发消息
	{
		memset(buff,0,sizeof(buff));
		printf("客户端发信息：");
		fgets(buff,sizeof(buff),stdin);
		buff[strlen(buff)-1] = '\0';
		send(oldfd,buff,sizeof(buff),0);//阻塞发送

		recv(oldfd,buff,sizeof(buff),0);//阻塞接收
		printf("收到服务器的消息：%s\n",buff);
	}
	close(oldfd);
	return 0;
}

运行结果：

2、广播发送接收端，自己实现一遍（重点模型）

广播发送接收端

发送端UDPsend.c代码

#include <myhead.h>
#define SENDPORT 6666
#define SENDIP "192.168.19.255"//广播IP地址

int main(int argc, const char *argv[])
{
	//1、创建套接字
	int oldfd = socket(AF_INET,SOCK_DGRAM,0);
	if(oldfd==-1)
	{
		perror("socket");
		return -1;
	}

	//2、设置套接字允许广播
	int kkk=2;
	if(setsockopt(oldfd,SOL_SOCKET,SO_BROADCAST,&kkk,sizeof(kkk))==-1)
	{
		perror("setsockopt");
		return -1;
	}
	printf("设置允许广播成功\n");

	struct sockaddr_in send = {
		.sin_family = AF_INET,
		.sin_port = htons(SENDPORT),
		.sin_addr.s_addr = inet_addr(SENDIP)
	};

	struct sockaddr_in ree;
	int reelen = sizeof(ree);
	char buff[1024];

	while(1)//3、发送信息
	{
		bzero(buff,sizeof(buff));
		sleep(2);
		strcat(buff,"5201314");
		sendto(oldfd,buff,sizeof(buff),0,(struct sockaddr *)&send,sizeof(send));
		printf("发送成功\n");
	}
	close(oldfd);//关闭套接字
	return 0;
}

接收端recv.c代码

#include <myhead.h>
#define SENDPORT 6666
#define SENDIP "192.168.19.255"//广播IP地址

int main(int argc, const char *argv[])
{
	//1、创建套接字
	int oldfd = socket(AF_INET,SOCK_DGRAM,0);
	if(oldfd==-1)
	{
		perror("socket");
		return -1;
	}
	struct sockaddr_in ree = {
		.sin_family = AF_INET,
		.sin_port = htons(SENDPORT),
		.sin_addr.s_addr = inet_addr(SENDIP)
	};
	//2、绑定
	if(bind(oldfd,(struct sockaddr *)&ree,sizeof(ree))==-1)
	{
		perror("bind");
		return -1;
	}
	//3、收发消息
	char buff[1024];
	while(1)
	{
		bzero(buff,sizeof(buff));
		recvfrom(oldfd,buff,sizeof(buff),0,NULL,NULL);

		printf("%s\n",buff);
		strcat(buff,"^_^");

		sendto(oldfd,buff,sizeof(buff),0,(struct sockaddr *)&ree,sizeof(ree));
		printf("发送成功\n");
	}
	return 0;
}

运行结果：