Linux下用c語言實現發送http請求 方式可以Get或者Post例程參考
阿新 • • 發佈：2018-12-11
sockaddr select sleep online 創建 線程終止 index -s lse
[1].[代碼] Linux下用c語言實現發送http請求 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("創建網絡連接失敗,本線程即將終止---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("創建網絡連接失敗,本線程即將終止--inet_pton error!\n");
exit(0);
};
if (connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0){
printf("連接到服務器失敗,connect error!\n");
exit(0);
}
printf("與遠端建立了連接\n");
//發送數據
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("發送失敗！錯誤代碼是%d，錯誤信息是‘%s‘\n",errno, strerror(errno));
exit(0);
}else{
printf("消息發送成功，共發送了%d個字節！\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("在讀取數據報文時SELECT檢測到異常，該異常導致線程終止！\n");
return -1;
};
if (h > 0){
memset(buf, 0, 4096);
i= read(sockfd, buf, 4095);
if (i==0){
close(sockfd);
printf("讀取數據報文時發現遠端關閉，該線程終止！\n");
return -1;
}
printf("%s\n", buf);
}
}
close(sockfd);
return 0;
}
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Linux下用c語言實現發送http請求 方式可以Get或者Post例程參考