aiyao Linux下用c语言实现发送http请求方式可以Get或者Post

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我是靠谱客的博主激动胡萝卜，最近开发中收集的这篇文章主要介绍aiyao Linux下用c语言实现发送http请求方式可以Get或者Post，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

[1].[代码] Linux下用c语言实现发送http请求方式可以Get或者Post 跳至[1]

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#include <stdio.h>

#include <sys/socket.h>

#include <sys/types.h>

#include <time.h>

#include <errno.h>

#include <signal.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <sys/wait.h>

#include <sys/time.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#define IPSTR "61.147.124.120"

#define PORT 80

#define BUFSIZE 1024

int
 main(
int
argc, 
char
**argv)

{

int
sockfd, ret, i, h;

struct
sockaddr_in servaddr;

char
str1[4096], str2[4096], buf[BUFSIZE], *str;

socklen_t len;

fd_set   t_set1;

struct
timeval  tv;

if
((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 ) {

printf
(
"创建网络连接失败,本线程即将终止---socket error!n"
);

exit
(0);

};

bzero(&servaddr, 
sizeof
(servaddr));

servaddr.sin_family = AF_INET;

servaddr.sin_port = htons(PORT);

if
(inet_pton(AF_INET, IPSTR, &servaddr.sin_addr) <= 0 ){

printf
(
"创建网络连接失败,本线程即将终止--inet_pton error!n"
);

exit
(0);

};

if
(connect(sockfd, (
struct
sockaddr *)&servaddr, 
sizeof
(servaddr)) < 0){

printf
(
"连接到服务器失败,connect error!n"
);

exit
(0);

}

printf
(
"与远端建立了连接n"
);

//发送数据

memset
(str2, 0, 4096);

strcat
(str2, 
"qqCode=474497857"
);

str=(
char
*)
malloc
(128);

len = 
strlen
(str2);

sprintf
(str, 
"%d"
, len);

memset
(str1, 0, 4096);

strcat
(str1, 
"POST /webservices/qqOnlineWebService.asmx/qqCheckOnline HTTP/1.1n"
);

strcat
(str1, 
"Host: www.webxml.com.cnn"
);

strcat
(str1, 
"Content-Type: application/x-www-form-urlencodedn"
);

strcat
(str1, 
"Content-Length: "
);

strcat
(str1, str);

strcat
(str1, 
"nn"
);

strcat
(str1, str2);

strcat
(str1, 
"rnrn"
);

printf
(
"%sn"
,str1);

ret = write(sockfd,str1,
strlen
(str1));

if
(ret < 0) {

printf
(
"发送失败！错误代码是%d，错误信息是'%s'n"
,
errno
, 
strerror
(
errno
));

exit
(0);

}
else
{

printf
(
"消息发送成功，共发送了%d个字节！nn"
, ret);

}

FD_ZERO(&t_set1);

FD_SET(sockfd, &t_set1);

while
(1){

sleep(2);

tv.tv_sec= 0;

tv.tv_usec= 0;

h= 0;

printf
(
"--------------->1"
);

h= select(sockfd +1, &t_set1, NULL, NULL, &tv);

printf
(
"--------------->2"
);

//if (h == 0) continue;

if
(h < 0) {

close(sockfd);

printf
(
"在读取数据报文时SELECT检测到异常，该异常导致线程终止！n"
);

return
-1;

};

if
(h > 0){

memset
(buf, 0, 4096);

i= read(sockfd, buf, 4095);

if
(i==0){

close(sockfd);

printf
(
"读取数据报文时发现远端关闭，该线程终止！n"
);

return
-1;

}

printf
(
"%sn"
, buf);

}

}

close(sockfd);

return
0;

}