UDP is unreliable; whatever the buffer size is, messages can still get discarded if a client doesn't process them fast enough etc.
So we need a working reliable layer on top of UDP which is capable of handling re-requests of missing packets etc. The current code is work in progress; which nearly works, but requires some more work - feel free to work on it, we welcome patches! http://activemq.apache.org/contributing.html On 6/21/07, Jiang <[EMAIL PROTECTED]> wrote:
I still not find the correct way to resolve this problem. I have changed the replayBufferCommandCount to 1000 and compiled the source code . Then I replaced the ReliableTransport.class in the lib. But when I run the client, it was the same. "Request for buffer xx is no longer present" in eclipse console and in windows cmd console it throw "duplicate message be discarded". Why ? Any one can give some help? Thanks Jiang wrote: > > I config UDP in activemq.xml to use udp transport. But When I register 20 > consumer and 1 producer in one destination, I find if I send several > messages , broker will throw: "Request for buffer xx is no longer present" > in console . After I view the udp code , I think maybe it is caused by the > udp buffer size( default 50 ) , what I think is correct ? How can I use > code to change the default size or maybe it can changed through > activemq.xml ? (When connection is created by connectionfactory I don't > find how to change the udp transport buffer size ) > -- View this message in context: http://www.nabble.com/UDP-buffer-problem-tf3899903s2354.html#a11225458 Sent from the ActiveMQ - User mailing list archive at Nabble.com.
-- James ------- http://macstrac.blogspot.com/
