本地socket--SOCK_DGRAM方式

ゞ浴缸里的玫瑰 2022-09-18 11:56 185阅读 0赞

服务端

#include <stdio.h>
    #include <string.h>
    #include <stdlib.h>
    #include <unistd.h>
    #include <sys/socket.h>
    #include <sys/un.h>
    
    #define PATH "./tt"
    
    int main(int argc ,char *argv[])
    {
        int sockfd = 0;
        struct sockaddr_un addr;
        unlink(PATH);  
        addr.sun_family = AF_UNIX;
        strcpy(addr.sun_path,PATH);
    
        unsigned int len = strlen(addr.sun_path) + sizeof(addr.sun_family);
        sockfd = socket(AF_UNIX,SOCK_DGRAM,0);
        if(sockfd < 0 )
        {
            perror("socket error");
            exit(-1);
        }
    
        if(bind(sockfd,(struct sockaddr *)&addr,len) < 0)
        {
            perror("bind error");
            close(sockfd);
            exit(-1);
        }
        printf("Bind is ok\n");
    
        while(1)
        {
            char recv_buf[20] = "";
            recvfrom(sockfd,recv_buf,sizeof(recv_buf),0,(struct sockaddr*)&addr,&len);
            printf("Recv: %s\n",recv_buf);
        }
        return 0;
    
    }

客户端：

#include <stdio.h>
    #include <string.h>
    #include <unistd.h>
    #include <stdlib.h>
    #include <sys/socket.h>
    #include <sys/un.h>
    
    #define PATH "./tt"
    
    int main(int argc,char *argv[])
    {
        int sockfd = 0;
        struct sockaddr_un addr;
        bzero(&addr,sizeof(addr));
    
        addr.sun_family = AF_UNIX;
        strcpy(addr.sun_path,PATH);
    
        sockfd = socket(AF_UNIX,SOCK_DGRAM,0);
        if(sockfd < 0)
        {
            perror("socket error");
            exit(-1);
        }
    
        while(1)
        {
            static int counter = 0;
            char send_buf[20] = "";
            counter++;
            sprintf(send_buf,"Counter is %d",counter);
            int len = strlen(addr.sun_path)+sizeof(addr.sun_family);
            sendto(sockfd,send_buf,strlen(send_buf),0,(struct sockaddr*)&addr,len);
            printf("Send: %s\n",send_buf);
            sleep(1);
        }
        return 0;
    }