def __init__(self, addr, port, interface='', observers=None,
data_callback=None, shared_socket=None):
""" Constructor for the UDPListener class.
@param addr: address to listen on
@param port: port to listen on
@param interface: interface to listen on
@param observers: list of initial subscribers
@param data_callback: callback to get data forwarded to
@param shared_socket: socket to be reused by this network listener
@type addr: string
@type port: integer
@type interface: string
@type observers: list of INetworkObserver
@type data_callback: callable
@type shared_socket: socket.socket
"""
NetworkListener.__init__(self, observers, data_callback)
self.addr = addr
self.port = port
self.interface = interface
# win32 does not like interface='' (MSEARCH replies are not propagated) - TODO: check this is correct
if os.name == 'nt':
ifaces = get_active_ifaces()
if ifaces:
self.interface = get_ip_address(ifaces[0])
self.socket = None
self.fd_id = None
self._create_socket(shared_socket)
def _generate_random_address(self):
# Default listen url: localhost:port where port is on the dynamic
# range (non registered ports)
ifaces = get_active_ifaces()
host = None
port = None
if ifaces:
host = get_ip_address(ifaces[0])
else:
host = 'localhost'
while not port:
port = random.randint(49152, 65535)
try:
check_port(host, port)
except IOError:
port = 0
self.host = host
self.port = port
def _generate_random_address(self):
# Default listen url: localhost:port where port is on the dynamic
# range (non registered ports)
ifaces = get_active_ifaces()
host = None
port = None
if ifaces:
host = get_ip_address(ifaces[0])
else:
host = 'localhost'
while not port:
port = random.randint(49152, 65535)
try:
check_port(host, port)
except IOError:
port = 0
self.host = host
self.port = port
""" Provides a simple API and observer model for listening over UDP.
"""
import socket
from struct import pack
from brisa import __enable_offline_mode__
from brisa.core import log, reactor
from brisa.core.network import get_active_ifaces
from brisa.core.ireactor import EVENT_TYPE_READ
from brisa.core.threaded_call import run_async_function
if not __enable_offline_mode__:
if not get_active_ifaces():
raise RuntimeError('Network is down.')
class CannotListenError(Exception):
""" Exception denoting an error when binding interfaces for listening.
"""
def __init__(self, interface, port, addr='', reason=''):
""" Constructor for the CannotListenError class
@param interface: interface where the error occured
@param port: port at the error ocurred when binding
@param addr: address at the error ocurred when binding
@param reason: reason why the error happened
# http://opensource.org/licenses/mit-license.php or see LICENSE file.
# Copyright 2007-2008 Brisa Team <*****@*****.**>
""" Provides a simple API and observer model for listening over UDP.
"""
import socket
from struct import pack
from brisa import __enable_offline_mode__
from brisa.core import log, reactor
from brisa.core.network import get_active_ifaces
from brisa.core.ireactor import EVENT_TYPE_READ
from brisa.core.threaded_call import run_async_function
if not __enable_offline_mode__:
if not get_active_ifaces():
raise RuntimeError('Network is down.')
class CannotListenError(Exception):
""" Exception denoting an error when binding interfaces for listening.
"""
def __init__(self, interface, port, addr='', reason=''):
""" Constructor for the CannotListenError class
@param interface: interface where the error occured
@param port: port at the error ocurred when binding
@param addr: address at the error ocurred when binding
@param reason: reason why the error happened
@type interface: string