Problem with redis gem > 4.2

[mrship]

Using the Redis gem > 4.2, we can't write anything to the session using redis-rack and a redis session.

Below is a repo-script. Using with 4.1.4 works fine; with 4.2 it throws an exception:

/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/redis-4.2.1/lib/redis.rb:836: warning: The called method `set' is defined here
ArgumentError: unknown keywords: :path, :domain, :expire_after, :secure, :httponly, :defer, :renew, :sidbits, :secure_random, :redis_server
	/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/redis-4.2.1/lib/redis.rb:836:in `set'
	/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/redis-store-1.8.2/lib/redis/store/interface.rb:9:in `set'
	/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/redis-store-1.8.2/lib/redis/store/ttl.rb:8:in `set'

As far as I can tell, this is because of the change under this commit to the redis gem that removed the options in favour of explicit keyword arguments.

We can fix our version of redis to 4.1.4 to get around this for now, but this does appear to be something that redis-store will need fixing for too.

---

#!/usr/bin/env ruby

require 'bundler/inline'

REDIS_VERSION = "4.1.4"
# REDIS_VERSION = "4.2.1" # boom

gemfile do
  source 'https://rubygems.org'
  ruby '2.7.1'

  gem "rack"
  gem "redis", REDIS_VERSION
  gem "redis-rack"
end

class Sesh
  def call(env)
    env['rack.session']['id'] = 1
    [200, {}, ["Using #{REDIS_VERSION}"]]
  end
end

handler = Rack::Builder.new do
  use Rack::Session::Redis
  run Sesh.new
end

run handler

[tubbo]

I just merged redis-store/redis-store#333 which should have fixed a lot of these problems. Once the ruby-head fixes are merged in I'll do a release. To use this gem with redis-rack, add this to Gemfile:

gem 'redis-store', github: 'redis-store/redis-store'

[mrship]

Aha! Thanks for the review/fix.