Peter,

Functionally, rcvr channels are a subset of rqstr channels.  If you are on
the inbound side, rqstrs give you the ability to start sdr/svr channels on
the remote node, which you cannot do with a rcvr.  If you are on the
outbound side and start your sdr/svr channel you cannot distinguish between
rcvr or rqstr on the other end.

The difference between svr/sdr is a little more subtle however.  If you
start a local sdr/svr channel, it connects to whatever is in it's CONNAME.
Same thing if you use a rqstr to start a sdr, the sdr connects to whatever
is in its CONNAME - even if that is not the node you requested from.  Now if
you use a rqstr to start a svr, the svr connects to the rqstr that initiated
it - even if that node is not the same as what's in the CONNAME.

For example, given 3 QMgrs QM1, QM2 and QM3 with the following channels:

QM1
QM3.TO.QM1(rqstr)\CONNAME(QM3)
QM3.TO.QM2(rqstr)\CONNAME(QM3)
                              QM3
                              QM3.TO.QM1(svr)\CONNAME(QM1)
                              QM3.TO.QM2(sdr)\CONNAME(QM2)
QM2
QM3.TO.QM1(rqstr)\CONNAME(QM3)
QM3.TO.QM2(rqstr)\CONNAME(QM3)

Starting both channels on QM1 will result in QM3 making connections to QM1
AND QM2.

Starting both channels on QM2 will result in QM3 making connections to QM2
ONLY.

Starting both channels on QM3 will result in QM3 making connections to QM1
AND QM2.

-- T.Rob

-----Original Message-----
From: Peter Heggie [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 18, 2002 10:39 AM
To: [EMAIL PROTECTED]
Subject: Drawbacks to Requestor channel vs Receiver channel


Are there any drawbacks to using Requestor channels instead of Receiver
channels? I understand that Requestor channel uses a 'callback' method
which is a little more secure..

Instructions for managing your mailing list subscription are provided in
the Listserv General Users Guide available at http://www.lsoft.com
Archive: http://vm.akh-wien.ac.at/MQSeries.archive

Instructions for managing your mailing list subscription are provided in
the Listserv General Users Guide available at http://www.lsoft.com
Archive: http://vm.akh-wien.ac.at/MQSeries.archive

Reply via email to