将 libcpr 用于 HTTP 请求时无法正常工作

Question

I am using libcpr for http requests in Visual Studio 2019 IDE. I downloaded it using vcpkg from microsoft. The sample code below is from cpr github page https://github.com/libcpr/cpr#:~:text=%23include%20%3C,return%200%3B%0A%7D

#include <cpr/cpr.h>

int main(int argc, char** argv) {
    cpr::Response r = 
             cpr::Get(cpr::Url{"https://api.github.com/repos/whoshuu/cpr/contributors"},
                  cpr::Authentication{"user", "pass", cpr::AuthMode::BASIC},
                  cpr::Parameters{{"anon", "true"}, {"key", "value"}});
    r.status_code;                  // 200
    r.header["content-type"];       // application/json; charset=utf-8
    r.text;                         // JSON text string
    return 0;

}

This doesn't work! It is giving error "namespace "cpr" has no member "AuthMode". This problem is not with this only. There was some other stuff that gives similar error eg https://docs.libcpr.org/advanced-usage.html#https-options:~:text=cpr%3A%3ASslOptions%20sslOpts%20%3D%20cpr%3A%3ASsl(ssl%3A%3ACaBuffer%7B%22%2D%2D%2D%2D%2DBEGIN%20CERTIFICATE%2D%2D%2D%2D%2D%5B...%5D%22%7D)%3B%0Acpr%3A%3AResponse%20r%20%3D%20cpr%3A%3AGet(cpr%3A%3AUrl%7B%22https%3A//www.httpbin.org/get%22%7D%2C%20sslOpts)%3B in this case "CaBuffer" has same issue.

Any help would be appreciated!!

Thanks

Answer 1

Looks to me like a versioning issue. AuthMode exists in the latest header file , but does not exist in the version 1.8 header file , which is presumably what you have.

So, either downgrade your code, or upgrade your installation.

Sample code from version 1.8 is here