C ++电报Bot POST请求更新，没有结果

Posted 2023-02-02

我正试图创建一个电报机器人。我首先尝试从机器人获取更新，如使用/ getUpdates方法在Telegram API中所述。使用Postman时，请求运行良好，并且我具有json格式的所有数据。使用cUrl我没有响应，res为0。这是代码段：

#include <iostream>
#include <curl/curl.h>
#include <string>

using namespace std;

static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)

    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;



void getUpdates()

    std::string readBuffer;

    CURL *curl;
    CURLcode res;
    curl = curl_easy_init();
    if(curl) 
      curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "POST");
      curl_easy_setopt(curl, CURLOPT_URL, "http://api.telegram.org/BOTTOKEN/getUpdates");
      curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
      curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
      struct curl_slist *headers = NULL;
      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
      curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
      curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
      std::cout << "Buffer content"<<readBuffer << std::endl;
      long code = -1;
      curl_easy_getinfo( curl, CURLINFO_RESPONSE_CODE, &code );
      std::cout<<"HTTP Response Code: "<< code <<std::endl;
      std::cout<<"Res: "<<res<<std::endl;
      res = curl_easy_perform(curl);

    


int main()

    getUpdates();
    return 0;

缓冲区内容为空，res为0。

您能给我些提示吗？谢谢！

答案

我解决了！这里有更新的代码：

void getUpdates()

    CURL *curl;
    CURLcode res;
    curl = curl_easy_init();
    if(curl) 
      curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
      curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "POST");
      curl_easy_setopt(curl, CURLOPT_URL, "http://api.telegram.org/botyourtoken/getUpdates");
      curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
      curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
      struct curl_slist *headers = NULL;
      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
      curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
      std::string readBuffer;
      curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
      res = curl_easy_perform(curl);
      std::cout << "Buffer content: "<<std::endl;
      std::cout<<readBuffer << std::endl;
    
    curl_easy_cleanup(curl);

谢谢！