mirror of
https://github.com/thoughtbot/capybara-webkit
synced 2023-03-27 23:22:28 -04:00
121 lines
2.7 KiB
Ruby
121 lines
2.7 KiB
Ruby
require 'socket'
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require 'timeout'
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require 'thread'
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module Capybara::Webkit
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class Connection
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SERVER_PATH = File.expand_path("../../../../bin/webkit_server", __FILE__)
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WEBKIT_SERVER_START_TIMEOUT = 15
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attr_reader :port
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def initialize(options = {})
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@socket_class = options[:socket_class] || TCPSocket
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@stdout = options.has_key?(:stdout) ? options[:stdout] : $stdout
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@command = options[:command] || SERVER_PATH
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start_server
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connect
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end
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def puts(string)
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@socket.puts string
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end
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def print(string)
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@socket.print string
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end
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def gets
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@socket.gets
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end
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def read(length)
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@socket.read(length)
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end
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private
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def start_server
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open_pipe
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discover_port
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forward_stdout_in_background_thread
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end
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def open_pipe
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@pipe = IO.popen(@command)
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@pid = @pipe.pid
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register_shutdown_hook
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end
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def register_shutdown_hook
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@owner_pid = Process.pid
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at_exit do
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if Process.pid == @owner_pid
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kill_process
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end
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end
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end
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def kill_process
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if RUBY_PLATFORM =~ /mingw32/
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Process.kill(9, @pid)
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else
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Process.kill("INT", @pid)
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end
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end
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def discover_port
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if IO.select([@pipe], nil, nil, WEBKIT_SERVER_START_TIMEOUT)
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@port = ((@pipe.first || '').match(/listening on port: (\d+)/) || [])[1].to_i
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end
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end
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def forward_stdout_in_background_thread
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@stdout_thread = Thread.new do
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Thread.current.abort_on_exception = true
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forward_stdout
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end
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end
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def forward_stdout
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while pipe_readable?
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line = @pipe.readline
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if @stdout
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@stdout.write(line)
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@stdout.flush
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end
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end
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rescue EOFError
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end
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if !defined?(RUBY_ENGINE) || (RUBY_ENGINE == "ruby" && RUBY_VERSION <= "1.8")
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# please note the use of IO::select() here, as it is used specifically to
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# preserve correct signal handling behavior in ruby 1.8.
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# https://github.com/thibaudgg/rb-fsevent/commit/d1a868bf8dc72dbca102bedbadff76c7e6c2dc21
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# https://github.com/thibaudgg/rb-fsevent/blob/1ca42b987596f350ee7b19d8f8210b7b6ae8766b/ext/fsevent/fsevent_watch.c#L171
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def pipe_readable?
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IO.select([@pipe])
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end
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else
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def pipe_readable?
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!@pipe.eof?
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end
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end
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def connect
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Timeout.timeout(5) do
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while @socket.nil?
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attempt_connect
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end
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end
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end
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def attempt_connect
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@socket = @socket_class.open("127.0.0.1", @port)
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if defined?(Socket::TCP_NODELAY)
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@socket.setsockopt(:IPPROTO_TCP, :TCP_NODELAY, 1)
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end
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rescue Errno::ECONNREFUSED
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end
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end
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end
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