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# Licensed to the Software Freedom Conservancy (SFC) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The SFC licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
module Selenium
module WebDriver
class PortProber
def self.above(port)
port += 1 until free? port
port
end
def self.random
# TODO: Avoid this
#
# (a) should pick a port that's guaranteed to be free on all interfaces
# (b) should pick a random port outside the ephemeral port range
#
WebDriver.logger.deprecate 'PortProber.random', 'PortProber.above(port)'
server = TCPServer.new(Platform.localhost, 0)
port = server.addr[1]
server.close
port
end
IGNORED_ERRORS = [Errno::EADDRNOTAVAIL, Errno::EAFNOSUPPORT]
IGNORED_ERRORS << Errno::EBADF if Platform.cygwin?
IGNORED_ERRORS << Errno::EACCES if Platform.windows?
IGNORED_ERRORS.freeze
def self.free?(port)
Platform.interfaces.each do |host|
begin
TCPServer.new(host, port).close
rescue *IGNORED_ERRORS => ex
WebDriver.logger.debug("port prober could not bind to #{host}:#{port} (#{ex.message})")
# ignored - some machines appear unable to bind to some of their interfaces
end
end
true
rescue SocketError, Errno::EADDRINUSE
false
end
end # PortProber
end # WebDriver
end # Selenium
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