#!/usr/bin/python
#
# Copyright 2011 Webdriver_name committers
# Copyright 2011 Google Inc.
#
# Licensed 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.
import subprocess
from subprocess import PIPE
import time

from selenium.common.exceptions import WebDriverException
from selenium.webdriver.common import utils

class Service(object):
    """
    Object that manages the starting and stopping of the ChromeDriver
    """

    def __init__(self, executable_path, port=0, service_args=None):
        """
        Creates a new instance of the Service
        
        :Args:
         - executable_path : Path to the ChromeDriver
         - port : Port the service is running on """

        self.port = port
        self.path = executable_path
        self.service_args= service_args
        if self.port == 0:
            self.port = utils.free_port()

    def start(self):
        """
        Starts the ChromeDriver Service. 
        
        :Exceptions:
         - WebDriverException : Raised either when it can't start the service
           or when it can't connect to the service
        """
        try:
            self.process = subprocess.Popen([self.path, "--port=%d%s" % (self.port, 
                ' '.join(self.service_args) if self.service_args else '')], stdout=PIPE, stderr=PIPE)
        except:
            raise WebDriverException(
                "ChromeDriver executable needs to be available in the path. \
                Please download from http://code.google.com/p/selenium/downloads/list\
                and read up at http://code.google.com/p/selenium/wiki/ChromeDriver")
        count = 0
        while not utils.is_connectable(self.port):
            count += 1
            time.sleep(1)
            if count == 30:
                 raise WebDriverException("Can not connect to the ChromeDriver")
                
    @property
    def service_url(self):
        """
        Gets the url of the ChromeDriver Service
        """
        return "http://localhost:%d" % self.port

    def stop(self):
        """ 
        Tells the ChromeDriver to stop and cleans up the process
        """
        #If its dead dont worry
        if self.process is None:
            return

        #Tell the Server to die!
        import urllib2
        urllib2.urlopen("http://127.0.0.1:%d/shutdown" % self.port)
        count = 0
        while utils.is_connectable(self.port):
            if count == 30:
               break 
            count += 1
            time.sleep(1)
        
        #Tell the Server to properly die in case
        try:
            if self.process:
                self.process.kill()
                self.process.wait()
        except WindowsError:
            # kill may not be available under windows environment
            pass

@@ -1155,17 +1155,91 @@
 nning on
- 
+%0A         - service_args : List of args to pass to the chromedriver service
 %22%22%22%0A%0A   
@@ -1321,16 +1321,17 @@
 ice_args
+ 
 = servic
@@ -1715,18 +1715,47 @@
 en(%5B
-self.path,
+%0A              self.path,%0A             
  %22--
@@ -1765,15 +1765,12 @@
 t=%25d
-%25s
 %22 %25 
-(
 self
@@ -1774,18 +1774,19 @@
 elf.port
-, 
+%5D +
 %0A       
@@ -1796,19 +1796,8 @@
     
-  ' '.join(
 self
@@ -1813,39 +1813,13 @@
 args
-) if self.service_args else '')
+ or %5B
 %5D, s

Allow multiple service args to be passed to the chromedriver service