发送http请求的代码实现

雨点打透心脏的1/2处 2022-08-07 01:59 189阅读 0赞

#include <arpa/inet.h>
    #include <assert.h>
    #include <errno.h>
    #include <netinet/in.h>
    #include <signal.h>
    #include <stdlib.h>
    #include <stdio.h>
    #include <string.h>
    #include <sys/types.h>
    #include <sys/socket.h>
    #include <sys/wait.h>
    #include <netdb.h>
    #include <unistd.h>
    
    #define SA      struct sockaddr
    #define MAXLINE 4096
    #define MAXSUB  2000
    #define MAXPARAM 2048
    
    #define LISTENQ         1024
    
    extern int h_errno;
    
    int sockfd;
    char *hname = "yunpian.com";
    char *send_sms_json = "/v1/sms/send.json";
    char *get_user_json = "/v1/user/get.json";
    
    /**
     * 发http post请求
     */
    ssize_t http_post(char *page, char *poststr)
    {
        char sendline[MAXLINE + 1], recvline[MAXLINE + 1];
        ssize_t n;
        snprintf(sendline, MAXSUB,
                 "POST %s HTTP/1.0\r\n"
                 "Host: %s\r\n"
                 "Content-type: application/x-www-form-urlencoded\r\n"
                 "Content-length: %zu\r\n\r\n"
                 "%s", page, hname, strlen(poststr), poststr);
        
        write(sockfd, sendline, strlen(sendline));
        while ((n = read(sockfd, recvline, MAXLINE)) > 0) {
            recvline[n] = '\0';
            printf("%s", recvline);
        }
        return n;
    }
    
    /**
     * 查账户信息
     */
    ssize_t get_user(char *apikey)
    {
        char params[MAXPARAM + 1];
        char *cp = params;
        sprintf(cp,"apikey=%s", apikey);
        return http_post(get_user_json, cp);
    }
    
    /**
     * 使用通用接口发短信
     */
    ssize_t send_sms(char *apikey, char *mobile, char *text)
    {
        char params[MAXPARAM + 1];
        char *cp = params;
        sprintf(cp,"apikey=%s&mobile=%s&text=%s", apikey, mobile, text);
        return http_post(send_sms_json, cp);
    }
    
    int main(void)
    {
        struct sockaddr_in servaddr;
        char **pptr;
        char str[50];
        struct hostent *hptr;
        if ((hptr = gethostbyname(hname)) == NULL) {
            fprintf(stderr, "通过域名获取IP失败: %s: %s",
                    hname, hstrerror(h_errno));
            exit(1);
        }
        printf("域名: %s\n", hptr->h_name);
        if (hptr->h_addrtype == AF_INET
            && (pptr = hptr->h_addr_list) != NULL) {
            printf("IP: %s\n",
                   inet_ntop(hptr->h_addrtype, *pptr, str,
                             sizeof(str)));
        } else {
            fprintf(stderr, "Error call inet_ntop \n");
            exit(1);
        }
        
        //建立socket连接
        sockfd = socket(AF_INET, SOCK_STREAM, 0);
        bzero(&servaddr, sizeof(servaddr));
        servaddr.sin_family = AF_INET;
        servaddr.sin_port = htons(80);
        inet_pton(AF_INET, str, &servaddr.sin_addr);
        
        connect(sockfd, (SA *) & servaddr, sizeof(servaddr));
    
        //修改为您的apikey
        char *apikey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
        //修改为您要发送的手机号
        char *mobile = "188xxxxxxxx";
        //设置您要发送的内容
        char *text = "您的验证码是1234";
        
        /**************** 查账户信息调用示例 *****************/
        get_user(apikey);
        
        /**************** 使用通用接口发短信 *****************/
        //send_sms(apikey, mobile, text);
    
        close(sockfd);
        exit(0);
    }