Net::HTTP Cheat Sheet
Related cards:
httpclient: A Ruby HTTP client for serious business
While debugging an intricate issue with failed HTTP requests I have come to appreciate the more advanced features of the httpclient Rubygem.
The gem is much more than a lightweight wrapper around Ruby's `net/...
RestClient / Net::HTTP: How to communicate with self-signed or misconfigured HTTPS endpoints
Occasionally, you have to talk to APIs via HTTPS that use a custom certificate or a misconfigured certificate chain (like missing an intermediate certificate).
Using RestClient will then raise RestClient::SSLCertificateNotVerified errors, or wh...
Fix Capistrano with RubyGems 1.6
After updating your RubyGems, you will probably not be able to run Capistrano any more, but receive an error similar to this:
can't activate net-ssh (= 2.0.22) for [], already activated net-ssh-2.1.0 for [] (Gem::LoadError)
If you have B...
Heads up: Ruby's Net::HTTP silently retries a failing request
Ruby's Net::HTTP library repeats a failing request once, as long as it deems it idempotent (GET, HEAD etc). Both requests will use the configured timeout. Hence, if both requests ti...
Missing certificates for rubygems and bundler in Ruby 1.8.7
Using Ruby 1.8.7 you will not be able to use the maximum versions Rubygems 1.8.30 and Bundler 1.17.3 with https://rubygems.org/ anymore. This is a result of a server certificate on December 5th, 2020. The resulting errors will...
Regular Expressions - Cheat Sheet
You can write regular expressions some different ways, e.g. /regex/ and %r{regex}. For examples, look here.
Remember that it is always a good idea [to matc...
Rubygems: Installing the last version of rubygems that has no rubyforge_project deprecation warning
You can install rubygems 3.0.8 (released on February 18, 2020) to keep all the Gem::Specification#rubyforge_project deprecation warnings away from your development log. With Rubygems >= 3.1 this deprecation warning was introduced. While main...
Force net/http to verify SSL certificates
Ruby's net/http is setup to never verify SSL certificates by default. Most ruby libraries do the same. That means that you're not verifying the identity of the server you're communicating with and are therefore exposed to man in the middle attacks...
List RubyGems binary version for all installed Ruby versions
rbenv
To check which rubygems versions your different rbenv rubys are using, you can use this small bash script:
for i in $(rbenv versions --bare); do rbenv shell "${i}"; echo -n "ruby ${i} has gem version: "; gem -v; done
RVM
``...