1.伺服器

#include <stdio.h>
#include <unistd.h>
#include <netdb.h>
#include <net/if.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <pthread.h>
#include <time.h>
#include <string.h>
#include <sys/un.h>

#define BUF_SIZE          (1024)

#define errlog(errmsg) do{perror(errmsg);\
                          printf("%s-->%s-->%d\n", __FILE__, __func__, __LINE__);\
                          exit(1);}\
                          while(0)


int main(int argc, char **argv)
{
    int iServerSockfd, iClientSockfd;
    ssize_t recvRet, sendRet;
    int iRet;
    char recvBuf[BUF_SIZE] = {0};
    char sendBuf[BUF_SIZE] = {0};
    struct sockaddr_un serverAddr, clientAddr;
    socklen_t addrLen = sizeof(serverAddr);

    printf("UNIX SERVER Start################################\n");
    bzero(&serverAddr, addrLen);
    bzero(&clientAddr, addrLen);

    unlink("socket");

    iServerSockfd = socket(AF_UNIX, SOCK_STREAM, 0);
    if(iServerSockfd < 0){
        errlog("fail to socket\n");
    }

    /*填充*/
    serverAddr.sun_family= AF_UNIX;
    strcpy(serverAddr.sun_path, "/tmp/socket");

    iRet = bind(iServerSockfd, (struct sockaddr *)&serverAddr, addrLen);
    if(iRet < 0){
        errlog("fail to bind serverAddr\n");
    }

    if(listen(iServerSockfd, 1) < 0){
        errlog("listen error\n");
    }

    printf("The Unix Server is waiting client to connect...\n");

    iClientSockfd = accept(iServerSockfd, (struct sockaddr *)&clientAddr, &addrLen);
    if(iClientSockfd < 0){
        errlog("can not accept client socket fd\n");
    }
    printf("The Unix Server is waiting to recv data from client...\n");

    while(1){
        recvRet = read(iClientSockfd, recvBuf, BUF_SIZE);
        if(recvRet < 0){
            errlog("read error\n");
        }else if(recvRet == 0){
            printf("No Data!\n");
        }else{
            printf("from client data :%s\n", recvBuf);
        }
        memcpy(sendBuf, recvBuf, BUF_SIZE);
        strcat(sendBuf, "*-*");
        sendRet = write(iClientSockfd, sendBuf, BUF_SIZE);
        if(sendRet < 0){
            errlog("write\n");
        }

    }


    close(iServerSockfd);
    close(iClientSockfd);



}
 

2.客戶端

#include <stdio.h>
#include <unistd.h>
#include <netdb.h>
#include <net/if.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <pthread.h>
#include <time.h>
#include <string.h>
#include <sys/un.h>

#define BUF_SIZE          (1024)

#define errlog(errmsg) do{perror(errmsg);\
                          printf("%s-->%s-->%d\n", __FILE__, __func__, __LINE__);\
                          exit(1);}\
                          while(0)


int main(int argc, char **argv)
{
    int iClientSockfd;
    int iRet;
    char sendBuf[BUF_SIZE] = "The Data from Unix Client for Unix test...";
    char recvBuf[BUF_SIZE] = {0};
    ssize_t recvRet, sendRet;
    struct sockaddr_un clientAddr;
    socklen_t addrLen = sizeof(clientAddr);

    bzero(&clientAddr, addrLen);

    printf("UNIX CLIENT Start########################\n");

    iClientSockfd = socket(AF_UNIX, SOCK_STREAM, 0);
    if(iClientSockfd < 0){
        errlog("socket error\n");
    }

    clientAddr.sun_family = AF_UNIX;
    strcpy(clientAddr.sun_path, "/tmp/socket");

    iRet = connect(iClientSockfd, (struct sockaddr *)&clientAddr, addrLen);
    if((iRet < 0) && (errno != EINPROGRESS)){
        errlog("connect error\n");
    }

    printf("connect successfully, ready to send data*************\n");

    while(1){
        sendRet = write(iClientSockfd, sendBuf, BUF_SIZE);
        if(sendRet < 0){
            errlog("write error\n");
        }

        printf("client is waitting data from server...\n");
        sleep(1);
        recvRet = read(iClientSockfd, recvBuf, BUF_SIZE);
        if(recvRet < 0){
            errlog("read error\n");
        }else{
            printf("Unix Server Data:%s\n", recvBuf);
        }
    }
    close(iClientSockfd);

}