More information provided when errors raised

[rightaway]

I'm getting several ClientResponseErrors but there is no additional information in the error object to hint at why it might have failed. Would be helpful if errors include more detail and documentation includes descriptions of when various errors are raised.

[asvetlov]

ClientResponseErrors is raised on server side when client disconnects without proper shutdown procedure.
In general those errors are fine, with slight performance degradation comparing to well-formed client side shutdown.

[fafhrd91]

@asvetlov thats different exception, ClientResponseError is raised by http client, but we use raise from exc form so original exception should be visible.

[asvetlov]

Oops, sorry. @fafhrd91, you are right.

[fafhrd91]

closing. ClientResponseError has exceptions chain.

[lock]

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