php与C语言通过AF_UNIX来进行IPC通信的例子

php与C语言通过AF_UNIX来进行IPC通信的例子

1）编写s_unix.c服务端文件

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h> 
#define UNIX_DOMAIN "/tmp/UNIX.domain"
int main(void)
{
    socklen_t clt_addr_len;
    int listen_fd;
    int com_fd;
    int ret;
    int i;
    static char recv_buf[1024]; 
    int len;
    struct sockaddr_un clt_addr;
    struct sockaddr_un srv_addr;
    listen_fd=socket(PF_UNIX,SOCK_STREAM,0);
    if(listen_fd<0)
    {
        perror("cannot create communication socket");
        return 1;
    }  
    
    //set server 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==-1)
    {
        perror("cannot bind server socket");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return 1;
    }
    //listen sockfd 
    ret=listen(listen_fd,1);
    if(ret==-1)
    {
        perror("cannot listen the client connect request");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return 1;
    }
    //have connect request use accept
    len=sizeof(clt_addr);
    com_fd=accept(listen_fd,(struct sockaddr*)&clt_addr,&len);
    if(com_fd<0)
    {
        perror("cannot accept client connect request");
        close(listen_fd);
        unlink(UNIX_DOMAIN);
        return 1;
    }
    //read and printf sent client info
    printf("/n=====info=====/n");
    for(i=0;i<4;i++)
    {
       memset(recv_buf,0,1024);
       int num=read(com_fd,recv_buf,sizeof(recv_buf));
	//printf("num=%d/n",num);
       printf("Message from client (%d)) :%s/n",num,recv_buf);
	//printf("i=%d/n",i);
	write(com_fd,"hello world",11,0);
	printf("/n%s/n","server to client msg ok");
    }
   // write(com_fd,"hello world",11,0);
   // printf("/n%s/n","server to client msg ok");
//printf("%s/n","end");
    //write(listen_fd,"aaadfd",6,0);
    close(com_fd);
    close(listen_fd);
    unlink(UNIX_DOMAIN);
    return 0;
}

 2）编写c_unix.c客户端文件

#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#define UNIX_DOMAIN "/tmp/UNIX.domain"
int main(void)
{
    int connect_fd;
    int ret;
    char snd_buf[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 create communication 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==-1)
    {
        perror("cannot connect to the server");
        close(connect_fd);
        return 1;
    }
    memset(snd_buf,0,1024);
    strcpy(snd_buf,"message from client");
//send info server
    for(i=0;i<4;i++)
        write(connect_fd,snd_buf,sizeof(snd_buf));
    close(connect_fd);
    return 0;
}

 3）编写PHP客户端文件 test.php

<?php
 define("UNIX_DOMAIN","/tmp/UNIX.domain");
// echo UNIX_DOMAIN;
  
 $socket = socket_create(AF_UNIX, SOCK_STREAM, 0);  //第三个参数为0
 if ($socket < 0) 
 { 
      echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n"; 
 } 
 else

 { 
      echo "create OK.\n"; 
 }  
   
  $result = socket_connect($socket, UNIX_DOMAIN);  //这里只要两个参数即可
 if ($result < 0) 
 { 
      echo "socket_connect() failed.\nReason: ($result) " . socket_strerror($result) . "\n"; 
 } 
 else

 { 
      echo "connect OK"; 
 }
   
  //下面的代码和普通php socket通信一致
 $in = "测试IPC通信\n";     
 if(!socket_write($socket, $in, strlen($in))) 
 { 
      echo "socket_write() failed: reason: " . socket_strerror($socket) . "\n"; 
 } 
 else

 { 
      echo "send message ok！\n";  
      echo "\naccept message=".socket_read($socket, 8192)."\n";
 }  
 
 
 echo "Close SOCKET...\n"; 
 socket_close($socket); 
 echo "Close OK\n"; 
 
?>

 4）编译s_unix.c和c_unix.c文件

gcc s_unix.c -o s_unix

gcc c_unix.c -o c_unix

5）运行测试

先启动一个窗口运行s_unix，方法 为：./s_unix

然后 再开启一个窗口运行c_unix进行测试 ：./c_unix

这里主要是来测试 PHP与C语言的通信  可以再开启一个窗口运行php test.php即可

效果如图 ：