Make more informative error messages when UploadError

[espdev]

Why do you hide the error info when ConnectionError occurred?

poetry/poetry/publishing/uploader.py

Lines 39 to 52 in b1d380e

	class UploadError(Exception):
	def __init__(self, error: Union[ConnectionError, HTTPError, str]) -> None:
	if isinstance(error, HTTPError):
	message = "HTTP Error {}: {}".format(
	error.response.status_code, error.response.reason
	)
	elif isinstance(error, ConnectionError):
	message = (
	"Connection Error: We were unable to connect to the repository, "
	"ensure the url is correct and can be reached."
	)
	else:
	message = str(error)
	super(UploadError, self).__init__(message)

The message is absolutely not informative.

Connection Error: We were unable to connect to the repository, ensure the url is correct and can be reached.

1. The repository URL is not shown
2. The real ConnectionError message is hidden

It is impossible to understand what happened. In my case I'm getting ('Connection aborted.', ConnectionAbortedError(10053)) error with my private repository. I could not understand what was happening until I added debug prints to poetry code.

[dimbleby]

seems like an easy merge request for anyone who's interested in this

[miohtama]

Poking this old issue.

I am now getting:

Connection Error: We were unable to connect to the repository, ensure the url is correct and can be reached.

On the main public PyPi repository. No idea if it's PyPi failing, or some issue on my local connection.

[github-actions]

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