[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/1.1\n"
);
strcat
(str1,
"Host: www.webxml.com.cn\n"
);
strcat
(str1,
"Content-Type: application/x-www-form-urlencoded\n"
);
strcat
(str1,
"Content-Length: "
);
strcat
(str1, str);
strcat
(str1,
"\n\n"
);
strcat
(str1, str2);
strcat
(str1,
"\r\n\r\n"
);
printf
(
"%s\n"
,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！\n\n"
, 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
(
"%s\n"
, buf);
}
}
close(sockfd);
return
0;
}
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