C對接提交查詢接口DEMO示例

本文為您提供了C語言版本的提交查詢接口對接DEMO示例

//linux下的編譯：gcc -o test ./test.c
//linux下的執(zhí)行：./test

#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>
#include <netdb.h>

#define host "api.ihuyi.com"
#define PORT 80
#define BUFSIZE 4096

int main(int argc, char **argv)
{
    int sockfd, ret, i, h,srandnum;
    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 ) { //創(chuàng)建套接字
        printf("create connect error!\n"); //創(chuàng)建網(wǎng)絡(luò)連接失敗
        exit(0);
    };

    bzero(&servaddr, sizeof(servaddr)); //每個字節(jié)都用0填充
    servaddr.sin_family = AF_INET; //使用IPv4地址
    servaddr.sin_port = htons(PORT); //端口

    if (inet_aton(host, &servaddr.sin_addr) == 0){
        struct hostent *he;
        he = gethostbyname(host);
        if (he == NULL)
            return -1;
        memcpy(&servaddr.sin_addr, he->h_addr, sizeof(struct in_addr));
    }
    char ipbuf[128];
    strncpy(ipbuf, inet_ntoa(servaddr.sin_addr), 128); //將域名轉(zhuǎn)成IP

    if (inet_pton(AF_INET, ipbuf, &servaddr.sin_addr) <= 0 ){
            printf("inet_pton error!\n"); //創(chuàng)建網(wǎng)絡(luò)連接失敗
            exit(0);
    };

    if (connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0){
            printf("connect error!\n");
            exit(0);
    }
    printf("connect success!\n\n");

    //發(fā)送數(shù)據(jù)
    memset(str2, 0, 4096);
    strcat(str2, "account=xxxxxxxx&password=xxxxxxxxx&vin=4567890&engine_number=12345678¬ice_model=202012345&time=1623643787&");
    str=(char *)malloc(128);
    len = strlen(str2);
    sprintf(str, "Content-Length: %d\r\n\r\n", len);

    memset(str1, 0, 4096);
    strcat(str1, "POST /veh/vinveh/Submit.json HTTP/1.1\r\n");
    strcat(str1, "Host: ");
    strcat(str1, host);
    strcat(str1, "\r\n");
    strcat(str1, "Content-Type: application/x-www-form-urlencoded\r\n");
    strcat(str1, str);
    strcat(str1, str2);
    strcat(str1, "\r\n\r\n");
    printf("Request Data: \n%s\n",str1);

    ret = write(sockfd,str1,strlen(str1));
    if (ret < 0) {
        printf("send data fail！errno:%d, errmsg:'%s'\n\n",errno, strerror(errno));
        exit(0);
    }else{
        printf("send data success, length:%d byte!\n\n", ret);
    }

    FD_ZERO(&t_set1);
    FD_SET(sockfd, &t_set1);

    while(1){
        //sleep(1);
        tv.tv_sec= 0;
        tv.tv_usec= 0;
        h = select(sockfd+1, &t_set1, NULL, NULL, &tv);

        if (h == 0) {
            memset(buf, 0, 4096);
            i= read(sockfd, buf, 4095);
            if (i==0){
                close(sockfd);//關(guān)閉套接字
                printf("0.connect close！\n"); //讀取數(shù)據(jù)報文時發(fā)現(xiàn)遠(yuǎn)端關(guān)閉
                return -1;
            }
            printf("Response Data: \n%s\n", buf);
            close(sockfd);//關(guān)閉套接字
            printf("1.connect close！\n");
            return 1;
        }

        if (h > 0) {
            close(sockfd);//關(guān)閉套接字
            printf("2.connect close！\n");
            return -1;
        };

        if (h < 0) {
            close(sockfd);//關(guān)閉套接字
            printf("3.connect close！\n"); //在讀取數(shù)據(jù)報文時SELECT檢測到異常
            return -1;
        };

        //continue;
        //break;
    }
    close(sockfd);//關(guān)閉套接字
    printf("4.connect close！\n");

    return 0;
}