Error

Error is raised for transport and protocol failures originating from the HTTP extension. It is a subtype of std.RuntimeError, so it can be caught either specifically or through the broader runtime error type.

try
  get "http://127.0.0.1:1"
catch Error: err
  echo $str(err)

str(err) returns the underlying reqwest error message. dbg(err) includes the nominal type name together with that message.

Non-2xx HTTP responses are reported through Status, which is a nominal subtype of Error.

When the underlying error carries a URL, Error exposes it through a url field:

try
  get "http://example.invalid"
catch Error: err
  if (err.url != nil)
    echo $err.url.host