[issue20418] socket.getaddrinfo fails for hostname that is all digits 0-9

[R. David Murray]

R. David Murray added the comment:

getaddrinfo is a thin wrapper around the system call.  Have you tried the same thing in a C program and had it work?

My guess would be that the all-numeric 'hostname' is being treated as the integer form of an IP address.  I can't immediately find any documentation that addresses this for getaddrinfo, but the impression I get from googling is that turning numbers into ip addresses is not specified behavior but is what (most?) libc implementations do.

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nosy: +r.david.murray

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