Add paramethers to libcurl GET in c++

Question

I want to add some additional data in variable to HTTP GET using c++. When I make request using HTTP POST I do it like that:

    curl_easy_setopt(curl, CURLOPT_U         


        

Answer 1

Some support of this now exist (since curl version 7.62). The '?' and '&' are added automatically but I currently see no way of adding the parameters and values separately so they still have to be created with a '=' between them.

// Create URL
CURLUcode result;
CURLU *url = curl_url();
char *urlStr;

result = curl_url_set(url, CURLUPART_URL, "https://example.com/hello.json", 0);

if(!result) {
    const char paramValue1[] = "param1=value1";
    const char paramValue2[] = "param2=value2";

    // Add paramters
    result = curl_url_set(url, CURLUPART_QUERY, paramValue1, CURLU_APPENDQUERY);
    result = curl_url_set(url, CURLUPART_QUERY, paramValue2, CURLU_APPENDQUERY);

    // Convert URL to string for printing
    result = curl_url_get(url, CURLUPART_URL, &urlStr, 0);

    printf("New URL: %s", urlStr);
}
curl_url_cleanup(url);

// Output: New URL: https://example.com/hello.json?param1=value1&param2=value2

References

[1] https://curl.haxx.se/libcurl/c/curl_url_set.html

Answer 2

For GET just append the parameters to the URL, like

http://some.host.com/some/path?variable1=value1&variable2=value2

I'm sure you've seen it before!