upstream/ipython Files · IPython/zmq/heartbeat.py

Start webbrowser in a thread. Prevents lockup with Chrome....

Start webbrowser in a thread. Prevents lockup with Chrome. If a user has Chrome set as their default browser (system-wide or via the `BROWSER` environment variable), opening the notebook hangs because the chrome call doesn't return immediately. This solves the issue by opening the browser in a thread. Note that there remains an issue where killing the notebook will kill Chrome if the Chrome session was started by us. I haven't found a way to work around that despite attempts by making the webbrowser.open() call in a subprocess.

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             heartbeat.py
        
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      """The client and server for a basic ping-pong style heartbeat.

      """

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2008-2010  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      import socket

      import sys

      from threading import Thread

      import zmq

      from IPython.utils.localinterfaces import LOCALHOST

      #-----------------------------------------------------------------------------

      # Code

      #-----------------------------------------------------------------------------

      class Heartbeat(Thread):

          "A simple ping-pong style heartbeat that runs in a thread."

          def __init__(self, context, addr=(LOCALHOST, 0)):

              Thread.__init__(self)

              self.context = context

              self.addr = addr

              self.ip = addr[0]

              self.port = addr[1]

              if self.port == 0:

                  s = socket.socket()

                  s.bind(self.addr)

                  self.port = s.getsockname()[1]

                  s.close()

                  self.addr = (self.ip, self.port)

              self.daemon = True

          def run(self):

              self.socket = self.context.socket(zmq.REP)

              self.socket.bind('tcp://%s:%i' % self.addr)

              zmq.device(zmq.FORWARDER, self.socket, self.socket)

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				"""The client and server for a basic ping-pong style heartbeat.
				"""

				#-----------------------------------------------------------------------------
				# Copyright (C) 2008-2010 The IPython Development Team
				#
				# Distributed under the terms of the BSD License. The full license is in
				# the file COPYING, distributed as part of this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------

				import socket
				import sys
				from threading import Thread

				import zmq

				from IPython.utils.localinterfaces import LOCALHOST

				#-----------------------------------------------------------------------------
				# Code
				#-----------------------------------------------------------------------------


				class Heartbeat(Thread):
				"A simple ping-pong style heartbeat that runs in a thread."

				def __init__(self, context, addr=(LOCALHOST, 0)):
				Thread.__init__(self)
				self.context = context
				self.addr = addr
				self.ip = addr[0]
				self.port = addr[1]
				if self.port == 0:
				s = socket.socket()
				s.bind(self.addr)
				self.port = s.getsockname()[1]
				s.close()
				self.addr = (self.ip, self.port)
				self.daemon = True

				def run(self):
				self.socket = self.context.socket(zmq.REP)
				self.socket.bind('tcp://%s:%i' % self.addr)
				zmq.device(zmq.FORWARDER, self.socket, self.socket)