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.......\n");
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\n",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.......\n");
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\n",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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linux中c语言和php语言通信代码UDP&TCP

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