My curl.kt file has:

import curl.*

fun main(args: Array<String>) {
println("Download from URL")
val url = "<https://jetbrains.com>"
val curl = curl_easy_init();
var result :CURLcode;

result = curl_easy_setopt(curl, CURLOPT_URL, url);
if(result != CURLE_OK) {println("Error setting URL for download: ${curl_easy_strerror(result)}"); return;}

result = curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
if(result != CURLE_OK) {println("Error setting CURL FOLLOWLOCATION option to true for download: ${curl_easy_strerror(result)}"); return;}

result = curl_easy_perform(curl);
if(result != CURLE_OK) {println("Error performing CURL download: ${curl_easy_strerror(result)}"); return;}

curl_easy_cleanup(curl);
}

I’m not understanding what the error is telling me. Am I supposed to do something special to pass the curl object or url string into the native API calls?

I’m thinking the error result is returned as a raw CPointer and I just need to convert it to a kstring or something but how do I do that without knowing the length?

Do I make a utility function that converts by scanning for a null terminator?

I figured it out!!! The sample code I copied from has a small bug.

The bug was in the error checking logic which I’ve changed to this:

result = curl_easy_perform(curl);
if(result != CURLE_OK) {
val emsg = curl_easy_strerror(result);
println("Error performing CURL download: ${emsg?.toKString()}");
return;
}

Once I corrected the error checking logic it was obvious why the example was failing. The error reported was:

SFO1212474815A:easycurl 212474815$ ./kurl.kexe
Download from URL
Error performing CURL download: Couldn't resolve host name

I was behind an http proxy! My next question would be how would I configure proxy settings in such an app?

I suppose I would have to configure the proxy manually through curl?