[Python-Dev] _socket efficiencies ideas (original) (raw)

Sean Reifschneider jafo@tummy.com
Wed, 9 Apr 2003 06:48:48 -0600

On Tue, Apr 08, 2003 at 10:50:50AM -0400, Guido van Rossum wrote:

Are you sure that it tries make a DNS call even when the address is pure numeric? That seems a mistake, and if that's really happening, I

My first thought is that there should be a local DNS cache on the machine that is running these apps. My second thought is that Python could benefit from caching some lookup information...

address is purely numeric. I'd be happy to see a patch that intercepts addresses of the form \d+.\d+.\d+.\d+ and parses those without calling getaddrinfo().

It's not quite that easy. Beyond the IPV6 issues mentioned elsewhere, you'd also want to check "\d+.\d+" and "\d+.\d+.\d+". IP addresses will fill in missing ".0"s, which is particularly handy for accessing "127.1", which gets expanded to "127.0.0.1".

Sean

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