106 lines
2.3 KiB
Ruby
106 lines
2.3 KiB
Ruby
require 'socket'
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require 'timeout'
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require 'thread'
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require 'open3'
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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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if options.has_key?(:stderr)
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@output_target = options[:stderr]
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elsif options.has_key?(:stdout)
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warn "[DEPRECATION] The `stdout` option is deprecated. Please use `stderr` instead."
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@output_target = options[:stdout]
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else
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@output_target = $stderr
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end
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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_output_in_background_thread
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end
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def open_pipe
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_, @pipe_stdout, @pipe_stderr, wait_thr = Open3.popen3(SERVER_PATH)
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@pid = wait_thr[: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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rescue Errno::ESRCH
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# This just means that the webkit_server process has already ended
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end
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def discover_port
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if IO.select([@pipe_stdout], nil, nil, WEBKIT_SERVER_START_TIMEOUT)
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@port = ((@pipe_stdout.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_output_in_background_thread
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Thread.new do
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Thread.current.abort_on_exception = true
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IO.copy_stream(@pipe_stderr, @output_target) if @output_target
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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(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, true)
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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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