Modified code (with changes suggested by you on stackoverflow):

class Base(DatagramProtocol):

""" Class to send M-SEARCH message to devices in network and receive datagram

packets from them

"""

SSDP_ADDR = "239.255.255.250"

SSDP_PORT = 1900

MS = "M-SEARCH * HTTP/1.1\r\nHOST: {}:{}\r\nMAN: 'ssdp:discover'\r\nMX: 2\r\nST: ssdp:all\r\n\r\n".format(SSDP_ADDR, SSDP_PORT)

def sendMsearch(self):

""" Sending M-SEARCH message

"""

timeInSeconds = [0.2,0.4,0.6,0.8]

try:

port = reactor.listenUDP(0, self, interface=self.address)

for num, delay in zip(range(4), timeInSeconds):

reactor.callLater(delay, port.write, Scanner.MS, (Scanner.SSDP_ADDR, Scanner.SSDP_PORT))

except error.CannotListenError:

pass

reactor.callLater(2.5, self.stopMsearch, port) # MX + a wait margin

def stopMsearch(self, port):

""" Stop listening on port

"""

port.stopListening()

def findDevices():

addresses = []

for interface in interfaces():

try:

for link in ifaddresses(interface)[AF_INET]:

addresses.append(link['addr'])

except KeyError:

pass

#loopback address

if "127.0.0.1" in addresses:

addresses.remove("127.0.0.1")

for address in addresses:

network = Base(address)

network.sendMsearch()

On Wed, Jun 25, 2014 at 3:50 PM, Pratik Prajapati <pratik.prajapati12@gmail.com> wrote:

Hi Jean-Paul,

you have seen my code on http://stackoverflow.com/questions/24178580/send-m-search-packets-on-all-network-interfaces-using-twisted-module-in-python

code with your suggested changes

this is working fine for windows machine, but on linux machine if no device is found on network then it doesn't go to stopMsearch()

Please help. How to debug this ?

On Sun, Jun 15, 2014 at 9:30 AM, Pratik Prajapati <pratik.prajapati12@gmail.com> wrote:

Hi Jean-Paul,

I have added a comment on your answer on stackoverflow, please respond there.

On Sat, Jun 14, 2014 at 11:53 PM, Pratik Prajapati <pratik.prajapati12@gmail.com> wrote:

Thanks for the answer

On Sat, Jun 14, 2014 at 7:57 PM, <exarkun@twistedmatrix.com> wrote:

On 12:48 pm, pratik.prajapati12@gmail.com wrote:

[snip]

Please tell what's wrong in code mentioned in the start of this mail and
how to correct this.

I have also posted this code on stackoverflow , but didn't get any response
http://stackoverflow.com/questions/24178580/send-m-search-packets-on- all-network-interfaces-using-twisted-module-in-python

I posted an answer on stackoverflow. I previously hadn't seen the question because it didn't have the `twisted` tag (I edited the question as well to replace the `twisted.internet` tag with the `twisted` tag). I suggest you use `twisted` for stackoverflow questions about Twisted in the future. :)

Jean-Paul

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--
Thanks and Regards,

Pratik Prajapati
Graduate Software Engineer

Imagination Technologies India Pvt Ltd.

--
Thanks and Regards,

Pratik Prajapati
Graduate Software Engineer

Imagination Technologies India Pvt Ltd.

--
Thanks and Regards,

Pratik Prajapati
Graduate Software Engineer

Imagination Technologies India Pvt Ltd.

Thanks and Regards,

Pratik Prajapati

Graduate Software Engineer

Imagination Technologies India Pvt Ltd.