combined multicast and unicast sockets to one socket

[hahahannes]

Hi, I am encountering a problem when using a multicast server which should be requested with a unicast request. In the example below, I only get the first response after the multicast but not the second response from the unicast request. I am not sure, if my solution attempt is correct, but maybe you could have a look. Thanks!

To reproduce on localhost:

I first started the server.

from coapthon.server.coap import CoAP

from coapthon.resources.resource import Resource

class BasicResource(Resource):
    def __init__(self, name="BasicResource", coap_server=None):
        super(BasicResource, self).__init__(name, coap_server, visible=True,
                                            observable=True, allow_children=True)
        self.payload = "Basic Resource"

    def render_GET(self, request):
        return self

    def render_PUT(self, request):
        self.payload = request.payload
        return self

    def render_POST(self, request):
        res = BasicResource()
        res.location_query = request.uri_query
        res.payload = request.payload
        return res

    def render_DELETE(self, request):
        return True

class CoAPServer(CoAP):
    def __init__(self, host, port):
        CoAP.__init__(self, (host, port), multicast=True)
        self.add_resource('basic/', BasicResource())

def main():
    server = CoAPServer("0.0.0.0", 5683)
    try:
        server.listen(10)
    except KeyboardInterrupt:
        server.close()

if __name__ == '__main__':
    main()

Then I started the client which discovers the server with a multicast request and then sends a unicast request with the informations from the first response.

from coapthon.client.helperclient import HelperClient

# Multicast 
host = "224.0.1.187"
port = 5683
path = "basic"

client = HelperClient(server=(host, port))
response = client.get(path)
print(response.pretty_print())

# Unicast
host = response.source[0]
port = response.source[1]

client = HelperClient(server=(host, port))
response = client.get(path)
print(response.pretty_print())