《Linux 系统编程》TCP单向通信

Server.c

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <pthread.h>



#define IPADDRESS "127.0.0.1"
#define PORT 8848
#define BUF_SIZE 1024



//发送消息
void* SendMes_Thread(void* Arg)
{

	puts("Thread created.");

	//类型转换
	int* Client_Socket=(int*)Arg;
	char Mes_Buf[BUF_SIZE]={0};

	while(1)
	{
		scanf("%s",Mes_Buf);
		send(*Client_Socket,Mes_Buf,strlen(Mes_Buf)+1,0);
		bzero(Mes_Buf,BUF_SIZE);
	}

	close(*Client_Socket);
	return NULL;
}

int main(int Argc,char** Argv)
{


	//创建服务器套接字
	int Server_Socket=socket(AF_INET,SOCK_STREAM,0);
	if(-1==Server_Socket)
	{
		perror("Server socket creation failed!");
		return -1;
	}


	//服务器的网络信息
	struct sockaddr_in Server_NetInfo={0};
	Server_NetInfo.sin_family=AF_INET;
	Server_NetInfo.sin_addr.s_addr=inet_addr(IPADDRESS);
	Server_NetInfo.sin_port=htons(PORT);

	//绑定IP和端口
	if(-1==bind(Server_Socket,(const struct sockaddr*)&Server_NetInfo,sizeof(struct sockaddr)))
	{
		perror("Binding failure!");
		return -1;
	}


	//监听服务器
	if(-1==listen(Server_Socket,6))
	{
		perror("Linstening the to failure!");
		return -1;
	}


	socklen_t Client_NetInfoSize=sizeof(struct sockaddr_in);
	//客户端的网络信息
	struct sockaddr_in Client_NetInfo={0};
	//创建客户端套接字
	int Client_Socket=-1;
	//接受请求
	Client_Socket=accept(Server_Socket,(struct sockaddr*)&Client_NetInfo,&Client_NetInfoSize);
	if(-1==Client_Socket)
	{
		perror("Accepting fainure!");
	}

	//创建线程，用于发送消息
	pthread_t Thread_ID=-1;
	if(-1==pthread_create(&Thread_ID,NULL,SendMes_Thread,(void*)&Client_Socket))
	{
		puts("Create thread falied!");
		return -1;
	}

	char Mes_Buf[BUF_SIZE]={0};
	while(1)
	{
		if(0==recv(Client_Socket,Mes_Buf,BUF_SIZE,0))
		{
			puts("Client is desconnected!");
			break;
		}
		printf("Client: %s\n",Mes_Buf);
	}

	close(Server_Socket);

	return 0;
}

Client.c

#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <pthread.h>


#define IPADDRESS "127.0.0.1"
#define PORT 8848
#define BUF_SIZE 1024



void* RecvMes_Thread(void* Arg)
{


	int* Client_Socket=(int*)Arg;

	char Mes_Buf[BUF_SIZE]={0};
	while(1)
	{
		if(0==recv(*Client_Socket,Mes_Buf,BUF_SIZE,0))
		{
			perror("Server is disconnected!");
			break;
		}
		printf("Server: %s\n",Mes_Buf);
	}

	close(*Client_Socket);
	return NULL;
}


int main(int Argc,char** Argv)
{


	//创建客户端套接字
	int Client_Socket=socket(AF_INET,SOCK_STREAM,0);
	if(-1==Client_Socket)
	{
		perror("Client socket creation failed!");
		return -1;
	}
	printf("Client_Socket==%d\n",Client_Socket);


	//设置服务器网络信息
	struct sockaddr_in Server_NetInfo={0};
	Server_NetInfo.sin_family=AF_INET;
	Server_NetInfo.sin_addr.s_addr=inet_addr(IPADDRESS);
	Server_NetInfo.sin_port=htons(PORT);

	//连接服务器
	if(-1==connect(Client_Socket,(const struct sockaddr*)&Server_NetInfo,sizeof(struct sockaddr_in)))
	{
		perror("Connecting failure!");
		return -1;
	}

	pthread_t Thread_ID=-1;
	if(0==pthread_create(&Thread_ID,NULL,RecvMes_Thread,(void*)&Client_Socket))
	{
		puts("Create thread failed!");
	}

	char Mes_Buf[BUF_SIZE]={0};

	while(1)
	{
		scanf("%s",Mes_Buf);
		if(-1==send(Client_Socket,Mes_Buf,strlen(Mes_Buf)+1,0))
		{
			perror("Sending failure!");
			break;
		}
		bzero(Mes_Buf,BUF_SIZE);
	}

	close (Client_Socket);

	return 0;
}