You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ssl_socket.rb
    path of file: ./repos/ssrf_filter/lib/ssrf_filter/patch
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class SsrfFilter
  module Patch
    module SSLSocket
      def self.apply!
        return if instance_variable_defined?(:@patched_ssl_socket)

        @patched_ssl_socket = true

        ::OpenSSL::SSL::SSLSocket.class_eval do
          # When fetching a url we'd like to have the following workflow:
          # 1) resolve the hostname www.example.com, and choose a public ip address to connect to
          # 2) connect to that specific ip address, to prevent things like DNS TOCTTOU bugs or other trickery
          #
          # Ideally this would happen by the ruby http library giving us control over DNS resolution,
          # but it doesn't. Instead, when making the request we set the uri.hostname to the chosen ip address,
          # and send a 'Host' header of the original hostname, i.e. connect to 'http://93.184.216.34/' and send
          # a 'Host: www.example.com' header.
          #
          # This works for the http case, http://www.example.com. For the https case, this causes certificate
          # validation failures, since the server certificate for https://www.example.com will not have a
          # Subject Alternate Name for 93.184.216.34.
          #
          # Thus we perform the monkey-patch below, modifying SSLSocket's `post_connection_check(hostname)`
          # and `hostname=(hostname)` methods:
          # If our fiber local variable is set, use that for the hostname instead, otherwise behave as usual.
          # The only time the variable will be set is if you are executing inside a `with_forced_hostname` block,
          # which is used in ssrf_filter.rb.
          #
          # An alternative approach could be to pass in our own OpenSSL::X509::Store with a custom
          # `verify_callback` to the ::Net::HTTP.start call, but this would require reimplementing certification
          # validation, which is dangerous. This way we can piggyback on the existing validation and simply pretend
          # that we connected to the desired hostname.

          original_post_connection_check = instance_method(:post_connection_check)
          define_method(:post_connection_check) do |hostname|
            original_post_connection_check.bind(self).call(::Thread.current[::SsrfFilter::FIBER_HOSTNAME_KEY] ||
              hostname)
          end

          if method_defined?(:hostname=)
            original_hostname = instance_method(:hostname=)
            define_method(:hostname=) do |hostname|
              original_hostname.bind(self).call(::Thread.cu
    
      def self.apply!
        return if instance_variable_defined?(:@patched_ssl_socket)

        @patched_ssl_socket = true

        ::OpenSSL::SSL::SSLSocket.class_eval do
          # When fetching a url we'd like to have the following workflow:
          # 1) resolve the hostname www.example.com, and choose a public ip address to connect to
          # 2) connect to that specific ip address, to prevent things like DNS TOCTTOU bugs or other trickery
          #
          # Ideally this would happen by the ruby http library giving us control over DNS resolution,
          # but it doesn't. Instead, when making the request we set the uri.hostname to the chosen ip address,
          # and send a 'Host' header of the original hostname, i.e. connect to 'http://93.184.216.34/' and send
          # a 'Host: www.example.com' header.
          #
          # This works for the http case, http://www.example.com. For the https case, this causes certificate
          # validation failures, since the server certificate for https://www.example.com will not have a
          # Subject Alternate Name for 93.184.216.34.
          #
          # Thus we perform the monkey-patch below, modifying SSLSocket's `post_connection_check(hostname)`
          # and `hostname=(hostname)` methods:
          # If our fiber local variable is set, use that for the hostname instead, otherwise behave as usual.
          # The only time the variable will be set is if you are executing inside a `with_forced_hostname` block,
          # which is used in ssrf_filter.rb.
          #
          # An alternative approach could be to pass in our own OpenSSL::X509::Store with a custom
          # `verify_callback` to the ::Net::HTTP.start call, but this would require reimplementing certification
          # validation, which is dangerous. This way we can piggyback on the existing validation and simply pretend
          # that we connected to the desired hostname.

          original_post_connection_check = instance_method(:post_connection_check)
          define_method(:post_connection_check) do |hostname|
            original_post_connection_check.bind(self).call(::Thread.current[::SsrfFilter::FIBER_HOSTNAME_KEY] ||
              hostname)
          end

          if method_defined?(:hostname=)
            original_hostname = instance_method(:hostname=)
            define_method(:hostname=) do |hostname|
              original_hostname.bind(self).call(::Thread.current[::SsrfFilter::FIBER_HOSTNAME_KEY] || hostname)
            end
          end

          # This patch is the successor to https://github.com/arkadiyt/ssrf_filter/pull/54
          # Due to some changes in Ruby's net/http library (namely https://github.com/ruby/net-http/pull/36),
          # the SSLSocket in the request was no longer getting `s.hostname` set.
          # The original fix tried to monkey-patch the Regexp class to cause the original code path to execute,
          # but this caused other problems (like https://github.com/arkadiyt/ssrf_filter/issues/61)
          # This fix attempts a different approach to set the hostname on the socket
          original_initialize = instance_method(:initialize)
          define_method(:initialize) do |*args|
            original_initialize.bind(self).call(*args)
            if ::Thread.current.key?(::SsrfFilter::FIBER_HOSTNAME_KEY)
              self.hostname = ::Thread.current[::SsrfFilter::FIBER_HOSTNAME_KEY]
            end
          end
        end