How to handle error if there is no internet connection about davidwebb

[hgoebl]

A WebbException will be thrown.
From there, you can get the Response object via getResponse().
When there is no Internet connection, you typically will read 0 from getStatusCode().
Internally often an exception telling name resolution didn't work, but that is not mandatory, e.g. if you try to reach your server via IP-address, then another error will be wrapped inside WebbException.

How you handle this kind of error is up to you. DavidWebb has a feature of doing retries, but I haven't tried this in case there are connection errors.

If you want to avoid running into errors caused by lack of internet connectivity, you could check that before doing a request. I suppose this could be a bit complicated, because you might deal with WiFi and mobile connectivity. And you might have to add additional privileges before being able to call network status methods.