httpdiff

Perform the same request against two HTTP servers and diff the results. For
best results use in a terminal that supports ANSI escape sequences.

Installation

go get github.com/jgrahamc/httpdiff
go install github.com/jgrahamc/httpdiff

Usage

Simple usage is to give it two URLs to fetch and it will diff the results. If
the bodies are different they are saved to temporary files.

httpdiff http://www.google.co.uk http://www.google.com/

It's also possible to set the Host header to something other than what's in
the URIs. This is sometimes useful when testing a temporary set up or when
moving servers.

httpdiff -host example.com http://example.old.com/ http://example.new.com

Specific headers can be ignored with the -ignore option

httpdiff -ignore Set-Cookie,Date http://x.com http://y.com

The default HTTP method is GET but that can be changed

httpdiff -method HEAD http://example.com http://example2.com

Output example on Hacker News showing that Date changes each time

Output example on Google showing difference between HTTP and HTTPS