[issue19451] urlparse accepts invalid hostnames

[R. David Murray]

R. David Murray added the comment:

Yes, I said that link only dealt with the DNS side of things...where there are also incompatibilities.

I don't think that strictly adhering to the URI RFCs would clear things up.  What about those domains that have _s and want to run web services on them?  It appears that the current RFCs have no provision for handling that case.

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