Any limitations on curl sent by custom app?

[jaamatos]

I have installed cURL on the ACAP solution and test it via linux prompt directly on the SSH camera acess. However, when insert the same basic code onto the Docker solution, compile it and run it on the Camera as an app all works fine except this portion of code:

CURL *curl;
CURLcode res;
curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "POST");
  curl_easy_setopt(curl, CURLOPT_URL, "http://192.168.1.10/digitaloutput/all/value");
  curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
  curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
  struct curl_slist *headers = NULL;
  headers = curl_slist_append(headers, "Authorization: ••••••");
  curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
  const char *data = "DO3=1";
  curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
  res = curl_easy_perform(curl);
  curl_slist_free_all(headers);
}
curl_easy_cleanup(curl);

It does not perform any result.
Once it works directly in the camera as a command line like so:

curl --location 'http://192.168.1.10/digitaloutput/all/value' \
--header 'Authorization: ••••••' \
--data-urlencode 'DO3=1'

...is there any limitation on an app to send in this case a REST API request?

Anyone ever face this issue? Any help will be welcome.
Thanks in advance,
Jose

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[vivekatoffice]

Hi @jaamatos ,
In my experience, I have not faced any issues with openssl_curl_examplel examples but I have not tested it with Axis OS 12.0 after root user removal.
You can refer : 529

Please try enabling the cURL logs.

#ifdef APP_DEBUG
        curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
        curl_easy_setopt(curl, CURLOPT_HEADER, 1L);
#endif

[rocky-ji]

There is no limitation in ACAP in curl,
Check the return value of your res = curl_easy_perform(curl); to see the error.

Or refer to this vapix sample for the curl function:
https://github.com/AxisCommunications/acap-native-sdk-examples/tree/main/vapix