Hi, I just need to be able to ping a functional component from another functional component in a distributed application synchronously. How can this be accomplished using JMS?
It appears its not straightforward? Thanks, /U -------------- Original message ---------------------- From: "Mario Siegenthaler" <[EMAIL PROTECTED]> > Just a thought, but why don't you use a topic for this? I think a > queue will cause problems because the message will be stored. So the > "I'm here" thing would possibly refer to an older question and would > no longer be relevant. > Hm, just reread your question, and realized that you directly want to > process the clients ack. I don't think that'll work. How'd you receive > the ack? Maybe a possiblity would be to define a max > queue/topic-buffer size of 1 and then the send would block until the > message is received. Another way would be to actually send a response > and the asker would just wait for a different message on a temporary > queue/topic. There's some utility in the JMS-API to do that.. sadly I > can never it's name. > > Mario > > On 8/3/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > > I have two entities on either side of a queue. Entity A needs to do a > > synchronous "are you there?" on the queue and receive a response > > synchronously from Entity B. > > > > I thought I'd do this: > > - Define a Queue "Are you there" and dispatchAsync = false > > - create a session with CLIENT_ACK set > > - send "are you there" message to the queue > > > > The receiver would acknowledge the message in the onMessage() > > method. > > > > However, I would like for the sender to time out if the ack is not received > > within a specified time. I see no option to do this which is obvious. > > How do I make sure that a synchronous send times out if the response > > is not received within a specified interval? > > > > Regards > > > > /U > > > > > >
