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https://github.com/Tygs/0bin.git
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Porting zerobin to python 3
This commit is contained in:
@ -13,7 +13,9 @@ protocols, etc.), you can manually register each one and then start them all
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with engine.start::
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s1 = ServerAdapter(cherrypy.engine, MyWSGIServer(host='0.0.0.0', port=80))
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s2 = ServerAdapter(cherrypy.engine, another.HTTPServer(host='127.0.0.1', SSL=True))
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s2 = ServerAdapter(cherrypy.engine,
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another.HTTPServer(host='127.0.0.1',
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SSL=True))
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s1.subscribe()
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s2.subscribe()
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cherrypy.engine.start()
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@ -54,16 +56,16 @@ hello.py::
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#!/usr/bin/python
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import cherrypy
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class HelloWorld:
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\"""Sample request handler class.\"""
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def index(self):
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return "Hello world!"
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index.exposed = True
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cherrypy.tree.mount(HelloWorld())
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# CherryPy autoreload must be disabled for the flup server to work
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cherrypy.config.update({'engine.autoreload_on':False})
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cherrypy.config.update({'engine.autoreload.on':False})
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Then run :doc:`/deployguide/cherryd` with the '-f' arg::
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@ -107,75 +109,92 @@ directive, configure your fastcgi script like the following::
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} # end of $HTTP["url"] =~ "^/"
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Please see `Lighttpd FastCGI Docs
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<http://redmine.lighttpd.net/wiki/lighttpd/Docs:ModFastCGI>`_ for an explanation
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of the possible configuration options.
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<http://redmine.lighttpd.net/wiki/lighttpd/Docs:ModFastCGI>`_ for
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an explanation of the possible configuration options.
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"""
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import sys
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import time
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import warnings
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class ServerAdapter(object):
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"""Adapter for an HTTP server.
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If you need to start more than one HTTP server (to serve on multiple
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ports, or protocols, etc.), you can manually register each one and then
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start them all with bus.start:
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start them all with bus.start::
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s1 = ServerAdapter(bus, MyWSGIServer(host='0.0.0.0', port=80))
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s2 = ServerAdapter(bus, another.HTTPServer(host='127.0.0.1', SSL=True))
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s1.subscribe()
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s2.subscribe()
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bus.start()
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"""
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def __init__(self, bus, httpserver=None, bind_addr=None):
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self.bus = bus
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self.httpserver = httpserver
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self.bind_addr = bind_addr
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self.interrupt = None
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self.running = False
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def subscribe(self):
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self.bus.subscribe('start', self.start)
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self.bus.subscribe('stop', self.stop)
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def unsubscribe(self):
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self.bus.unsubscribe('start', self.start)
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self.bus.unsubscribe('stop', self.stop)
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def start(self):
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"""Start the HTTP server."""
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if self.bind_addr is None:
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on_what = "unknown interface (dynamic?)"
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elif isinstance(self.bind_addr, tuple):
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host, port = self.bind_addr
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on_what = "%s:%s" % (host, port)
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on_what = self._get_base()
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else:
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on_what = "socket file: %s" % self.bind_addr
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if self.running:
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self.bus.log("Already serving on %s" % on_what)
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return
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self.interrupt = None
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if not self.httpserver:
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raise ValueError("No HTTP server has been created.")
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# Start the httpserver in a new thread.
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if isinstance(self.bind_addr, tuple):
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wait_for_free_port(*self.bind_addr)
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import threading
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t = threading.Thread(target=self._start_http_thread)
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t.setName("HTTPServer " + t.getName())
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t.start()
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self.wait()
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self.running = True
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self.bus.log("Serving on %s" % on_what)
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start.priority = 75
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def _get_base(self):
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if not self.httpserver:
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return ''
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host, port = self.bind_addr
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if getattr(self.httpserver, 'ssl_certificate', None) or \
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getattr(self.httpserver, 'ssl_adapter', None):
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scheme = "https"
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if port != 443:
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host += ":%s" % port
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else:
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scheme = "http"
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if port != 80:
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host += ":%s" % port
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return "%s://%s" % (scheme, host)
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def _start_http_thread(self):
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"""HTTP servers MUST be running in new threads, so that the
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main thread persists to receive KeyboardInterrupt's. If an
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@ -200,19 +219,19 @@ class ServerAdapter(object):
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traceback=True, level=40)
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self.bus.exit()
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raise
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def wait(self):
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"""Wait until the HTTP server is ready to receive requests."""
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while not getattr(self.httpserver, "ready", False):
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if self.interrupt:
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raise self.interrupt
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time.sleep(.1)
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# Wait for port to be occupied
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if isinstance(self.bind_addr, tuple):
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host, port = self.bind_addr
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wait_for_occupied_port(host, port)
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def stop(self):
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"""Stop the HTTP server."""
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if self.running:
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@ -226,7 +245,7 @@ class ServerAdapter(object):
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else:
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self.bus.log("HTTP Server %s already shut down" % self.httpserver)
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stop.priority = 25
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def restart(self):
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"""Restart the HTTP server."""
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self.stop()
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@ -234,31 +253,33 @@ class ServerAdapter(object):
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class FlupCGIServer(object):
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"""Adapter for a flup.server.cgi.WSGIServer."""
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def __init__(self, *args, **kwargs):
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self.args = args
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self.kwargs = kwargs
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self.ready = False
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def start(self):
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"""Start the CGI server."""
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# We have to instantiate the server class here because its __init__
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# starts a threadpool. If we do it too early, daemonize won't work.
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from flup.server.cgi import WSGIServer
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self.cgiserver = WSGIServer(*self.args, **self.kwargs)
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self.ready = True
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self.cgiserver.run()
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def stop(self):
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"""Stop the HTTP server."""
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self.ready = False
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class FlupFCGIServer(object):
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"""Adapter for a flup.server.fcgi.WSGIServer."""
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def __init__(self, *args, **kwargs):
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if kwargs.get('bindAddress', None) is None:
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import socket
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@ -270,7 +291,7 @@ class FlupFCGIServer(object):
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self.args = args
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self.kwargs = kwargs
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self.ready = False
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def start(self):
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"""Start the FCGI server."""
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# We have to instantiate the server class here because its __init__
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@ -290,24 +311,26 @@ class FlupFCGIServer(object):
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self.fcgiserver._oldSIGs = []
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self.ready = True
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self.fcgiserver.run()
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def stop(self):
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"""Stop the HTTP server."""
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# Forcibly stop the fcgi server main event loop.
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self.fcgiserver._keepGoing = False
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# Force all worker threads to die off.
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self.fcgiserver._threadPool.maxSpare = self.fcgiserver._threadPool._idleCount
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self.fcgiserver._threadPool.maxSpare = (
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self.fcgiserver._threadPool._idleCount)
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self.ready = False
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class FlupSCGIServer(object):
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"""Adapter for a flup.server.scgi.WSGIServer."""
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def __init__(self, *args, **kwargs):
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self.args = args
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self.kwargs = kwargs
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self.ready = False
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def start(self):
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"""Start the SCGI server."""
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# We have to instantiate the server class here because its __init__
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@ -327,7 +350,7 @@ class FlupSCGIServer(object):
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self.scgiserver._oldSIGs = []
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self.ready = True
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self.scgiserver.run()
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def stop(self):
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"""Stop the HTTP server."""
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self.ready = False
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@ -344,19 +367,21 @@ def client_host(server_host):
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return '127.0.0.1'
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if server_host in ('::', '::0', '::0.0.0.0'):
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# :: is IN6ADDR_ANY, which should answer on localhost.
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# ::0 and ::0.0.0.0 are non-canonical but common ways to write IN6ADDR_ANY.
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# ::0 and ::0.0.0.0 are non-canonical but common
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# ways to write IN6ADDR_ANY.
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return '::1'
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return server_host
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def check_port(host, port, timeout=1.0):
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"""Raise an error if the given port is not free on the given host."""
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if not host:
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raise ValueError("Host values of '' or None are not allowed.")
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host = client_host(host)
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port = int(port)
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import socket
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# AF_INET or AF_INET6 socket
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# Get the correct address family for our host (allows IPv6 addresses)
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try:
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@ -364,10 +389,12 @@ def check_port(host, port, timeout=1.0):
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socket.SOCK_STREAM)
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except socket.gaierror:
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if ':' in host:
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info = [(socket.AF_INET6, socket.SOCK_STREAM, 0, "", (host, port, 0, 0))]
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info = [(
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socket.AF_INET6, socket.SOCK_STREAM, 0, "", (host, port, 0, 0)
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)]
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else:
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info = [(socket.AF_INET, socket.SOCK_STREAM, 0, "", (host, port))]
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for res in info:
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af, socktype, proto, canonname, sa = res
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s = None
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@ -378,25 +405,27 @@ def check_port(host, port, timeout=1.0):
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s.settimeout(timeout)
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s.connect((host, port))
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s.close()
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raise IOError("Port %s is in use on %s; perhaps the previous "
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"httpserver did not shut down properly." %
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(repr(port), repr(host)))
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except socket.error:
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if s:
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s.close()
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else:
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raise IOError("Port %s is in use on %s; perhaps the previous "
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"httpserver did not shut down properly." %
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(repr(port), repr(host)))
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# Feel free to increase these defaults on slow systems:
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free_port_timeout = 0.1
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occupied_port_timeout = 1.0
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def wait_for_free_port(host, port, timeout=None):
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"""Wait for the specified port to become free (drop requests)."""
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if not host:
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raise ValueError("Host values of '' or None are not allowed.")
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if timeout is None:
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timeout = free_port_timeout
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for trial in range(50):
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try:
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# we are expecting a free port, so reduce the timeout
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@ -406,22 +435,32 @@ def wait_for_free_port(host, port, timeout=None):
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time.sleep(timeout)
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else:
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return
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raise IOError("Port %r not free on %r" % (port, host))
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def wait_for_occupied_port(host, port, timeout=None):
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"""Wait for the specified port to become active (receive requests)."""
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if not host:
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raise ValueError("Host values of '' or None are not allowed.")
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if timeout is None:
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timeout = occupied_port_timeout
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for trial in range(50):
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try:
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check_port(host, port, timeout=timeout)
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except IOError:
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# port is occupied
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return
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else:
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time.sleep(timeout)
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raise IOError("Port %r not bound on %r" % (port, host))
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if host == client_host(host):
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raise IOError("Port %r not bound on %r" % (port, host))
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# On systems where a loopback interface is not available and the
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# server is bound to all interfaces, it's difficult to determine
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# whether the server is in fact occupying the port. In this case,
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# just issue a warning and move on. See issue #1100.
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msg = "Unable to verify that the server is bound on %r" % port
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warnings.warn(msg)
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