Linux下发送HTTP协议请求

电玩女神 2022-08-23 03:56 180阅读 0赞

在Linux系统中用C语言实现的HTTP协议的POST和GET请求，下面是代码实现，如果要测试需要搭建个后台服务器的环境，

作者测试用的是PHP开发环境，具体搭建可参看另一篇文章：[http://blog.csdn.net/hanbo622/article/details/51598648][http_blog.csdn.net_hanbo622_article_details_51598648]

demo.c

#include <stdio.h>
    #include <unistd.h>
    #include <string.h>
    #include <stdlib.h>
    #include <netdb.h>
    #include <arpa/inet.h>
    #include <sys/socket.h>
    #include <netinet/in.h>
    int main(int argc, char *argv[])
    {
    	unsigned short port = 80;           // 服务器的端口号
    	char *server_ip = "192.168.2.203";  // 服务器ip地址
    
    	int sockfd = socket(AF_INET, SOCK_STREAM, 0);// 创建TCP套接字
    	if(sockfd < 0)
    	{
    		perror("socket");
    		exit(-1);
    	}
    	
    	struct sockaddr_in server_addr; //定义服务器信息结构体
    	bzero(&server_addr,sizeof(server_addr)); 
    	server_addr.sin_family = AF_INET;
    	server_addr.sin_port = htons(port);
    	inet_pton(AF_INET, server_ip, &server_addr.sin_addr);
    	
    	int err_log = connect(sockfd, (struct sockaddr*)&server_addr, sizeof(server_addr));   // 主动连接服务器
    	if(err_log != 0)
    	{
    		perror("connect");
    		close(sockfd);
    		exit(-1);
    	}
    	
    	char str1[1024] = "";
    	char data[]="username=hanbo&num=123"; //POST 数据
    #if 1    //POST 格式请求
    	sprintf(str1, "%s\r\n","POST http://192.168.2.203/index.php HTTP/1.1"); //http://192.168.2.203/index.php 服务端接收数据处理文件地址
    	sprintf(str1, "%s%s\r\n",str1,"Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, */*");
    	sprintf(str1, "%s%s\r\n",str1,"Referer: */*");
    	sprintf(str1, "%s%s\r\n",str1,"Accept-Language: en-US,zh-CN;q=0.5");
    	sprintf(str1, "%s%s\r\n",str1,"User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3)");
    	sprintf(str1, "%s%s\r\n",str1,"Content-Type: application/x-www-form-urlencoded");
    	sprintf(str1, "%s%s\r\n",str1,"Accept-Encoding: gzip, deflate");
    	sprintf(str1, "%s%s\r\n",str1,"Host: 192.168.2.203"); //服务器地址
    	sprintf(str1, "%s%s%d\r\n",str1,"Content-Length: ",strlen(data)); //数据长度
    	sprintf(str1, "%s%s\r\n",str1,"Connection: Keep-Alive");
    	sprintf(str1,"%s%s\r\n",str1,"Cache-Control: no-cache");
    	sprintf(str1, "%s\r\n",str1); //多加个回车
    	sprintf(str1, "%s%s\r\n",str1,data);
    #else	  //GET 格式请求
    	sprintf(str1, "%s\r\n","GET http://192.168.2.203/index.php?username=hanbo&num=123 HTTP/1.1"); //服务端接收数据处理文件地址,并带参数
    	sprintf(str1, "%s%s\r\n",str1,"Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, */*");
    	sprintf(str1, "%s%s\r\n",str1,"Accept-Language: en-US,zh-CN;q=0.5");
    	sprintf(str1, "%s%s\r\n",str1,"User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3)");
    	sprintf(str1, "%s%s\r\n",str1,"Accept-Encoding: gzip, deflate");
    	sprintf(str1, "%s%s\r\n",str1,"Host: 192.168.2.203"); //服务器地址
    	sprintf(str1, "%s%s\r\n",str1,"Connection: Keep-Alive");
    	sprintf(str1,"%s%s\r\n",str1,"Cookie: JSESSIONID=5386A9443729D7EB0B61E38A9C7CF52F");
    	sprintf(str1, "%s\r\n",str1);	
    #endif
    	printf("----------------------------- HTTP Data ----------------------------------\n");
    	printf("%s",str1);
    	printf("--------------------------- Data Len=%d ----------------------------------\n\n",strlen(str1));
    	
    	int ret=send(sockfd, str1, strlen(str1), 0);   // 向服务器发送信息
    	if(ret<0)
    	{
    		perror("send");
    		close(sockfd);
    		exit(-1);
    	}
    	
    	char recv_buf[521]="";
    	recv(sockfd, recv_buf, sizeof(recv_buf), 0);
    	printf("------------------------ server retrun data -------------------------------\n");
    	printf("%s\n\n",recv_buf);
    	close(sockfd);
    
    	return 0;
    }

在搭建好的服务端，在Apache安装目录D:\\AppServ\\Apache24\\htdocs 中新建文件index.php内容如下：

<?php
    /* 接收POST 格式数据处理 */
    echo "username=".$_POST['username'];
    echo "\nnum=".$_POST['num'];
    
    /* 接收GET 格式数据处理 */
    // echo "username=".$_GET['username'];
    // echo "\nnum=".$_GET['num'];
    ?>

运行POST请求会出现如下结果：

----------------------------- HTTP Data ----------------------------------
    POST http://192.168.2.203/index.php HTTP/1.1
    Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, */*
    Referer: */*
    Accept-Language: en-US,zh-CN;q=0.5
    User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3)
    Content-Type: application/x-www-form-urlencoded
    Accept-Encoding: gzip, deflate
    Host: 192.168.2.203
    Content-Length: 22
    Connection: Keep-Alive
    Cache-Control: no-cache
    
    username=hanbo&num=123
    --------------------------- Data Len=701 ----------------------------------
    
    ------------------------ server retrun data -------------------------------
    HTTP/1.1 200 OK
    Date: Mon, 06 Jun 2016 02:40:28 GMT
    Server: Apache/2.4.10 (Win32) PHP/5.5.25
    X-Powered-By: PHP/5.5.25
    Content-Length: 22
    Keep-Alive: timeout=5, max=100
    Connection: Keep-Alive
    Content-Type: text/html
    
    username=hanbo
    num=123

运行GET请求会出现如下结果：

----------------------------- HTTP Data ----------------------------------
    GET http://192.168.2.203/index.php?username=hanbo&num=123 HTTP/1.1
    Accept: image/jpeg, application/x-ms-application, image/gif, application/xaml+xml, image/pjpeg, application/x-ms-xbap, application/x-shockwave-flash, application/msword, application/vnd.ms-powerpoint, application/vnd.ms-excel, */*
    Accept-Language: en-US,zh-CN;q=0.5
    User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; qdesk 2.4.1265.203; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; InfoPath.3)
    Accept-Encoding: gzip, deflate
    Host: 192.168.2.203
    Connection: Keep-Alive
    Cookie: JSESSIONID=5386A9443729D7EB0B61E38A9C7CF52F
    
    --------------------------- Data Len=644 ----------------------------------
    
    ------------------------ server retrun data -------------------------------
    HTTP/1.1 200 OK
    Date: Mon, 06 Jun 2016 02:42:52 GMT
    Server: Apache/2.4.10 (Win32) PHP/5.5.25
    X-Powered-By: PHP/5.5.25
    Content-Length: 22
    Keep-Alive: timeout=5, max=100
    Connection: Keep-Alive
    Content-Type: text/html
    
    username=hanbo
    num=123

[http_blog.csdn.net_hanbo622_article_details_51598648]: http://blog.csdn.net/hanbo622/article/details/51598648