class Gem::Request::ConnectionPools

def no_proxy?(host, env_no_proxy)
  host = host.downcase
  env_no_proxy.any? do |pattern|
    env_no_proxy_pattern = pattern.downcase.dup
    # Remove dot in front of pattern for wildcard matching
    env_no_proxy_pattern[0] = "" if env_no_proxy_pattern[0] == "."
    host_tokens = host.split(".")
    pattern_tokens = env_no_proxy_pattern.split(".")
    intersection = (host_tokens - pattern_tokens) | (pattern_tokens - host_tokens)
    # When we do the split into tokens we miss a dot character, so add it back if we need it
    missing_dot = intersection.length > 0 ? 1 : 0
    start = intersection.join(".").size + missing_dot
    no_proxy_host = host[start..-1]
    env_no_proxy_pattern == no_proxy_host
  end
end