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mkyrc's avatar
mkyrc
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Jun 22, 2021
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How to replace [HTTP::host] using regex

Hi all, I'd like to replace Host information in HTTP header with regexp because I need read dynamic part of (sub)domain. I need change this (example): (.*).domain.com -> %1.newdomain.com F...
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  • mkyrc's avatar
    mkyrc
    Jun 23, 2021

    My solution without "regex":

    HTTP::header replace Host [string map -nocase {".domain.com" ".newdomain.com"} [HTTP::host]]

    The level 3 (or 4) subdomain is untouched. This solves my problem.

    I'd like to know solution with regex, because sometimes is helpful string manipulation like this: foo.domain.com -> foo.com (in this case is 'foo' is unknown, therefore is regex helpful).

mkyrc's avatar
mkyrc
Icon for Cirrus rankCirrus
Jun 23, 2021

My solution without "regex":

HTTP::header replace Host [string map -nocase {".domain.com" ".newdomain.com"} [HTTP::host]]

The level 3 (or 4) subdomain is untouched. This solves my problem.

I'd like to know solution with regex, because sometimes is helpful string manipulation like this: foo.domain.com -> foo.com (in this case is 'foo' is unknown, therefore is regex helpful).