Fix performance of follow import (#13836)

app/helpers/webfinger_helper.rb

@@ -1,5 +1,16 @@
 # frozen_string_literal: true
 
+# Monkey-patch on monkey-patch.
+# Because it conflicts with the request.rb patch.
+class HTTP::Timeout::PerOperationOriginal < HTTP::Timeout::PerOperation
+  def connect(socket_class, host, port, nodelay = false)
+    ::Timeout.timeout(@connect_timeout, HTTP::TimeoutError) do
+      @socket = socket_class.open(host, port)
+      @socket.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1) if nodelay
+    end
+  end
+end
+
 module WebfingerHelper
   def webfinger!(uri)
     hidden_service_uri = /\.(onion|i2p)(:\d+)?$/.match(uri)
@@ -12,6 +23,14 @@ module WebfingerHelper
       headers: {
         'User-Agent': Mastodon::Version.user_agent,
       },
+
+      timeout_class: HTTP::Timeout::PerOperationOriginal,
+
+      timeout_options: {
+        write_timeout: 10,
+        connect_timeout: 5,
+        read_timeout: 10,
+      },
     }
 
     Goldfinger::Client.new(uri, opts.merge(Rails.configuration.x.http_client_proxy)).finger