print(payload.tobytes()) if dps.publication_is_ack_requested(pub): ack_msg = "This is an ACK from %s" % (dps.get_listen_address(dps.publication_get_node(pub))) print("Sending ack for pub UUID %s(%d)" % (dps.publication_get_uuid(pub), dps.publication_get_sequence_num(pub))) print(" %s" % (ack_msg)) dps.ack_publication(pub, ack_msg); import argparse parser = argparse.ArgumentParser() parser.add_argument("-d", "--debug", action='store_true', help="Enable debug ouput if built for debug.") args = parser.parse_args() dps.cvar.debug = args.debug node = dps.create_node("/") dps.start_node(node, dps.MCAST_PUB_ENABLE_RECV + dps.MCAST_PUB_ENABLE_SEND, None) print("Subscriber is listening on %s" % (dps.get_listen_address(node))) sub = dps.create_subscription(node, ['a/b/c']); dps.subscribe(sub, on_pub) time.sleep(1) # Let publishers know we are here pub = dps.create_publication(node) dps.init_publication(pub, ['new_subscriber'], False) dps.publish(pub, "Hi") if not sys.flags.interactive: while True: time.sleep(1)
def on_ack(pub, payload): print "Ack for pub UUID %s(%d)" % (dps.publication_get_uuid(pub), dps.publication_get_sequence_num(pub)) print " %s" % (payload) def on_destroy(node): print "Destroyed" dps.destroy_key_store(key_store) node = dps.create_node("/", key_store, node_id) dps.start_node(node, dps.MCAST_PUB_ENABLE_SEND, 0) pub = dps.create_publication(node) dps.init_publication(pub, ['a/b/c'], False, None, on_ack) dps.publication_add_sub_id(pub, pub_key_id) dps.publish(pub, "hello") print "Pub UUID %s(%d)" % (dps.publication_get_uuid(pub), dps.publication_get_sequence_num(pub)) time.sleep(0.2) dps.publish(pub, "world") print "Pub UUID %s(%d)" % (dps.publication_get_uuid(pub), dps.publication_get_sequence_num(pub)) time.sleep(0.2) dps.destroy_publication(pub) dps.destroy_node(node, on_destroy)
def on_destroy(node): print "Destroyed" import argparse parser = argparse.ArgumentParser() parser.add_argument("-d", "--debug", action='store_true', help="Enable debug ouput if built for debug.") args = parser.parse_args() dps.cvar.debug = args.debug node = dps.create_node("/") dps.start_node(node, dps.MCAST_PUB_ENABLE_SEND + dps.MCAST_PUB_ENABLE_RECV, 0) print "Publisher is listening on port %d" % (dps.get_port_number(node)) pub = dps.create_publication(node) dps.init_publication(pub, ['a/b/c'], False, None) dps.publish(pub, "hello", 200) # Subscription for responding to alerts from new subscribers sub = dps.create_subscription(node, ['new_subscriber']) dps.subscribe(sub, on_pub) time.sleep(60) dps.destroy_publication(pub) dps.destroy_node(node, on_destroy)