Linux之本地socket demo

向右看齐 2022-09-16 15:25 182阅读 0赞

1.server.c
    //server
    #include <stdio.h>
    #include <sys/socket.h>
    #include <sys/types.h>
    #include <sys/un.h>
    #include <stdlib.h>
    #include <unistd.h>
    #include <sys/select.h>
    #include <sys/time.h>
    #define UNIX_DOMAIN "/home/socket.test" //PC本地实际路径
    
    int main(){
    	socklen_t clt_addr_len;
      int listen_fd,fd,ret,i,len;
      fd_set read_set;
      struct timeval timeout;
    	static char rcv_buff[1024];
    	struct sockaddr_un clt_addr;
    	struct sockaddr_un srv_addr;
    	listen_fd=socket(AF_UNIX,SOCK_STREAM,0);
    	if(listen_fd<0){
        perror("connect creat communication socket");
    	}
    	// set srv_addr param
    	srv_addr.sun_family=AF_UNIX;
    	strncpy(srv_addr.sun_path,UNIX_DOMAIN,sizeof(srv_addr.sun_path)-1);
    	unlink(UNIX_DOMAIN);
    	//bind sockfd&addr
    	ret=bind(listen_fd,(struct sockaddr*)&srv_addr,sizeof(srv_addr));
    	if(ret<0){
        perror("cannot bind server socket");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return -1;
    	}
    	//listen sockfd
    	ret=listen(listen_fd,1);
    	if(ret<0){
    		perror("cannot listen sockfd");
    		close(listen_fd);
    		unlink(UNIX_DOMAIN);
    		return -1;
    	}
    	//have connect requst use accept
    	len=sizeof(clt_addr);
    	fd=accept(listen_fd,(struct sockaddr*)&clt_addr,&len);
    	if(fd<0){
        perror("cannot accept requst");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return -1;
    	}
    	
    	//read and printf client send info
    	printf("\n******info********\n");
    	memset(rcv_buff,0,1024);
    	read(fd,rcv_buff,sizeof(rcv_buff));
    	printf("xxx---->%s, %s(), line = %d, data = '%s'\n",__FILE__,__FUNCTION__,__LINE__,rcv_buff);
    
    	close(fd);
    	close(listen_fd);
    	unlink(UNIX_DOMAIN);
    	return 0;
    }

2.client.c
    //client
    #include<stdio.h>
    #include<string.h>
    #include<sys/types.h>
    #include<sys/socket.h>
    #include<sys/un.h>
    #include <unistd.h>
    #define UNIX_DOMAIN "/home/socket.test" //PC本地实际路径
    int main(){
    	int connect_fd;
    	int ret;
    	char send_buff[1024];
    	int i;
    	static struct sockaddr_un srv_addr;
    	// creat unix socket
    	connect_fd=socket(PF_UNIX,SOCK_STREAM,0);
    	if(connect_fd<0){
        perror("cannot creat socket");
        return -1;
    	}
    	srv_addr.sun_family=AF_UNIX;
    	strcpy(srv_addr.sun_path,UNIX_DOMAIN);
    	//connect server
    	ret=connect(connect_fd,(struct sockaddr*)&srv_addr,sizeof(srv_addr));
    	if (ret<0){
        perror("cannot connect server");
        close(connect_fd);
        return -1;
    	}
    	memset(send_buff,0,1024);
    	strcpy(send_buff,"I'm client data.");
    	//send info server
    	write(connect_fd,send_buff,sizeof(send_buff));
    	close(connect_fd);
    	return 0;
    }