def close(self):
"""Ends the background threads, and prevent this instance from
servicing further queries."""
if globals()['_GLOBAL_DONE'] == 0:
globals()['_GLOBAL_DONE'] = 1
self.notifyAll()
self.engine.notify()
self.unregisterAllServices()
mcastsocket.leave_group( self.socket, dns._MDNS_ADDR )
self.socket.close()
def listen( sock, group='FF02:0:0:0:0:2:FF00::' ):
try:
for i in range( 20 ):
rs,wr,xs = select.select( [sock],[],[], .05 )
if rs:
data, addr = sock.recvfrom( 65500 )
print 'From:', addr
print repr(data)
return
finally:
mcastsocket.leave_group( sock, group )
def listen(sock, group='FF02:0:0:0:0:2:FF00::'):
try:
for i in range(20):
rs, wr, xs = select.select([sock], [], [], .05)
if rs:
data, addr = sock.recvfrom(65500)
print 'From:', addr
print repr(data)
return
finally:
mcastsocket.leave_group(sock, group)
def main(ip):
"""Create a multicast socket, send a message, check it comes back"""
port = PORT
sock = mcastsocket.create_socket((ip, port), loop=False)
mcastsocket.join_group(sock, GROUP)
try:
payload = query % locals()
while True:
sock.sendto(payload, 0, (GROUP, PORT))
print 'Waiting for responses'
rs, wr, xs = select.select([sock], [], [], 20.0)
if rs:
data, addr = sock.recvfrom(2000)
handle(sock, data, addr)
return 1
finally:
mcastsocket.leave_group(sock, GROUP)
def main(ip):
"""Create a multicast socket, send a message, check it comes back"""
port = PORT
sock = mcastsocket.create_socket( (ip,port), loop=False )
mcastsocket.join_group( sock, GROUP )
try:
payload = query % locals()
while True:
sock.sendto( payload, 0, (GROUP,PORT))
print 'Waiting for responses'
rs,wr,xs = select.select( [sock],[],[], 20.0 )
if rs:
data, addr = sock.recvfrom( 2000 )
handle( sock, data, addr )
return 1
finally:
mcastsocket.leave_group( sock, GROUP )
def main(ip):
"""Create a multicast socket, send a message, check it comes back"""
sock = mcastsocket.create_socket( (ip,dns._MDNS_PORT), loop=True )
mcastsocket.join_group( sock, dns._MDNS_ADDR )
try:
payload = 'hello world'
for i in range( 5 ):
sock.sendto( payload, 0, (dns._MDNS_ADDR, dns._MDNS_PORT))
print 'Waiting for looped message receipt'
rs,wr,xs = select.select( [sock],[],[], 1.0 )
data,(addr,port) = sock.recvfrom( 200 )
if data == payload:
print 'Success: looped message received from address %s port %s'%(
addr,port,
)
return 0
print 'Failure: Looped message not received'
return 1
finally:
mcastsocket.leave_group( sock, dns._MDNS_ADDR )
def main(ip):
"""Create a multicast socket, send a message, check it comes back"""
sock = mcastsocket.create_socket((ip, dns._MDNS_PORT), loop=True)
mcastsocket.join_group(sock, dns._MDNS_ADDR)
try:
payload = 'hello world'
for i in range(5):
sock.sendto(payload, 0, (dns._MDNS_ADDR, dns._MDNS_PORT))
print 'Waiting for looped message receipt'
rs, wr, xs = select.select([sock], [], [], 1.0)
data, (addr, port) = sock.recvfrom(200)
if data == payload:
print 'Success: looped message received from address %s port %s' % (
addr,
port,
)
return 0
print 'Failure: Looped message not received'
return 1
finally:
mcastsocket.leave_group(sock, dns._MDNS_ADDR)
def send( sock, data, group='FF02:0:0:0:0:2:FF00::', port=5000 ):
try:
for i in range(5):
sock.sendto( data, (group,port))
finally:
mcastsocket.leave_group( sock, group )
def send(sock, data, group='FF02:0:0:0:0:2:FF00::', port=5000):
try:
for i in range(5):
sock.sendto(data, (group, port))
finally:
mcastsocket.leave_group(sock, group)
