• linux中c语言和php语言通信代码UDP&TCP


    linux中c语言和php语言通信代码UDP&TCP

    http://blog.chinaunix.net/uid-24015214-id-2644174.html

    UDP方式通信
     
    服务器端server.c
     1 /*server.c*/
     2 #include <string.h>
     3 #include <stdio.h>
     4 #include <netinet/in.h>
     5 #include <stdlib.h>
     6  
     7 #define SERV_PORT 8000
     8  
     9 int main()
    10 {
    11      int sockfd,n,servaddr_len;
    12      char * server_ip = "127.0.0.1";
    13      char buf[80];   
    14      struct sockaddr_in server,client;
    15  
    16  
    17  
    18  
    19  
    20      sockfd = socket (AF_INET,SOCK_DGRAM,0);
    21  
    22  
    23  
    24  
    25  
    26      bzero(&server,sizeof(server));
    27      server.sin_family = AF_INET;
    28      server.sin_addr.s_addr = inet_addr(server_ip);
    29      server.sin_port = htons(SERV_PORT);
    30  
    31      servaddr_len = sizeof(server);
    32  
    33  
    34  
    35 
    36      bind(sockfd,(struct sockaddr *) &server,servaddr_len);
    37      listen(sockfd,6);
    38      while(1)
    39      {
    40         printf("等待读取数据.......
    ");
    41  
    42         servaddr_len = sizeof(client);      
    43         n = read(sockfd,buf,sizeof(buf));
    44         write(sockfd,buf,n);
    45         printf("读取的数据为:%s
    ",buf);
    46         bzero(buf,sizeof(buf));
    47      }                     
    48      close(sockfd);
    49      return 0;
    50 }
    51 
    52  
    53  
    View Code
     
     
    客户端client.php
     1 <?php
     2 $server_ip="127.0.0.1";
     3 $port = 8000;
     4 if($_POST['submit'])
     5 {
     6    $buf=trim($_POST['buf']);
     7    $sockfd=socket_create(AF_INET,SOCK_DGRAM,SOL_UDP)or die("创建失败");
     8    socket_connect($sockfd,$server_ip,$port)or die("连接错误");
     9    socket_write($sockfd,$buf,strlen($buf))or die("写入错误");
    10  
    11    socket_read($sockfd,$buf,80);
    12    echo $buf;
    13    $buf="";
    14    socket_close($sockfd);
    15 }
    16 ?>
    17 <form action="client.php" method="post">
    18 请选则发送方式:<br><input type=text name="buf">
    19 <input type=submit name="submit" value="发送">
    20 </form>
    View Code
     
    server.c文件通过gcc编译器编译
     
    client.php通过浏览器运行
     
     
     
    TCP方式
     
    服务器端
     1 /*server.c*/
     2 #include <string.h>
     3 #include <stdio.h>
     4 #include <netinet/in.h>
     5 #include <stdlib.h>
     6  
     7 #define SERV_PORT 8000
     8  
     9 int main()
    10 {
    11    int sockfd,n,servaddr_len,client_len,connfd;
    12    char * server_ip = "127.0.0.1";
    13    char buf[80];   
    14    struct sockaddr_in server,client;
    15  
    16  
    17  
    18    sockfd = socket (AF_INET,SOCK_STREAM,0);
    19  
    20  
    21  
    22    bzero(&server,sizeof(server));
    23    server.sin_family = AF_INET;
    24    server.sin_addr.s_addr = inet_addr(server_ip);
    25    server.sin_port = htons(SERV_PORT);
    26  
    27  
    28  
    29    servaddr_len = sizeof(server);
    30    client_len=sizeof(client);
    31  
    32 
    33    bind(sockfd,(struct sockaddr *) &server,servaddr_len);
    34    listen(sockfd,6);
    35    while(1)
    36    {
    37       bzero(buf,sizeof(buf));
    38       printf("等待读取数据.......
    ");
    39       connfd=accept(sockfd,(struct sockaddr *)&client,&client_len);    
    40       n = read(connfd,buf,sizeof(buf));
    41       // write(connfd,buf,n);
    42       printf("读取的数据为:%s
    ",buf);
    43   
    44     }                     
    45     close(sockfd);
    46     return 0;
    47 }
    View Code
     
     
    客户端
     1 <?php
     2 $server_ip="127.0.0.1";
     3 $port = 8000;
     4 if($_POST['submit'])
     5 {
     6     $buf=trim($_POST['buf']);
     7     $sockfd=socket_create(AF_INET,SOCK_STREAM,SOL_TCP)or die("创建失败");
     8     socket_connect($sockfd,$server_ip,$port)or die("连接错误");
     9     socket_write($sockfd,$buf,strlen($buf))or die("写入错误");
    10  
    11     $a=socket_read($sockfd,80);
    12     echo $a;
    13     $buf="";
    14     socket_close($sockfd);
    15 }
    16 ?>
    17 <form action="tcpclient.php" method="post">
    18 请选则发送方式:<br><input type=text name="buf">
    19 <input type=submit name="submit" value="发送">
    20 </form>
    View Code
     
    注意:1、tcp方式要设置安全级别及防火墙
        
           centOS5.4设置方法为:系统->管理->安全级别及防火墙->SElinux选项卡
                            设置为允许即可
         2、查看httpd_can_network_connect选项设置为on
           centOS5.4设置方法为:在终端执行setsebool httpd_can_network_connect on 即可
    本人推荐使用第二种方法
        
     
         
     
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  • 原文地址:https://www.cnblogs.com/tianciliangen/p/3398568.html
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