ham44865 wrote:
I switched from one dstar repeater to talk on another dstar repeater.
Looking at my dstar repeater log,
I started talking at: 072309 at 23:20:36
The ICOM trust server sent the dstar radio user RENEWAL 2 minutes later
to all the other dstar repeaters at 072309 at 23:22:17
That is about 2 minutes.
What happens during those 2 minutes when another ham wants to
contact me? Audio packets are going to the wrong(old) dstar repeater ?
Scott
This is a problem with the current gateway/trust server implementation
and a fallout of the radios must be registered paradigm. I think a much
simpler algorithm would suffice (Psuedocode follows).
* for each (header)
o if (local.hashtable[MYCALL] != nulll) then
+ if (localhashtable[MYCALL].gateway != this.gateway) then
# send trustserver[MYCALL].gateway = this.gateway
+ else
# if (localhashtable[MYCALL].timestamp +
timeOutInSeconds >= time.now()) then
* send trustserver[MYCALL].gateway =
this.gateway
* localhashtable[MYCALL].timestamp = time.now()
o else
+ localhashtable[MYCALL].gateway = this.gateway
+ localhashtable[MYCALL].timestamp = time.now()
+ send trustserver[MYCALL].gateway = this.gateway
* if(localhashtable[URCALL] != null) then
o if (localhashtable[URCALL].gateway != this.gateway then
+ fork()
# PARENT :
* send stream to
localhashtable[URCALL].gateway
# CHILD:
* request trustserver[URCALL].gateway
* if (trustserver[URCALL].gateway !=
localhashtable[URCALL].gateway) then
o localhashtable[URCALL] =
trustserver[URCALL]
o send stream to
localhashtable[URCALL]
* else
o request trustserver[URCALL].gateway
o if (trustserver[URCALL].gateway != null].gateway) then
+ localhashtable[URCALL] = trustserver[URCALL]
+ send stream to localhashtable[URCALL].gateway
o else
+ send localhost[MYCALL].message = "URCALL Unknown"
Voila self updating tables locally with central registry in "trust
server" - simple and elegant.
John D. Hays
Amateur Radio Station K7VE <http://k7ve.org>
PO Box 1223
Edmonds, WA 98020-1223
VOIP/SIP: [email protected] <sip:[email protected]>
Email: [email protected] <mailto:[email protected]>
