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