HP 3000 Manuals HP 3000 Manuals
How Messages Leaving HP Desk are Routed through Gateways Once your application has signed on to a gateway, it is given the capability to pass on anything from HP Desk that is routed through that gateway. Messages inside HP Desk are addressed to users on mailnodes, a gateway can have several mailnodes routed through it. For an explanation of mailnodes and gateways refer to the manual HP DeskManager Administration. The Do Not Deliver Indicator Suppose an HP Desk user wants to send a message to another HP Desk user and a user defined as being on a gateway node. The sender mails one copy of the message with a Distribution List showing both users in the normal way. Inside HP Desk, one copy of the message goes to the other HP Desk user and one to the gateway. When HPDGateReceive has been called to get the message from the HP Desk gateway node, HP Desk will have set a "do not deliver" flag in the Transaction File against the name of the HP Desk user whose message has already been delivered. This allows your gateway application to determine the users to which it has to deliver messages and yet gives it the opportunity to pass on a full Distribution List to its users. On messages passed to the gateway for delivery to HP Desk users your application has the option of providing a full Distribution List and telling HP Desk who not to deliver to by using a "do not deliver" flag. However, this is optional, your application does not have to provide full Distribution Lists. Increasing the Number of Nodes on Your Gateway [REV BEG] If traffic increases on your gateway, you may want to introduce another node. This would allow you to have two copies of HPDGateReceive operating simultaneously. Each would receive messages from a different node. Imagine you have a gateway connection to another manufacturer's computer. This connection is used heavily so, to avoid messages being held up in queues for too long, you create two nodes for use with this gateway, IBMND1 and UNIX27.[REV END] A user may want to send the same message to four people, two of whom are defined on IBMND1 and two on UNIX27. The user only has to send one copy of the message with a Distribution List showing all four names. HP Desk will ensure the message has a Distribution List showing all these names. HP Desk will send a copy of the message to both nodes. On the copy which goes to IBMND1 "do not deliver" flags are set against any user names which do not reside on IBMND1. On the copy which goes to UNIX27 "do not deliver" flags are set against any user names which do not reside on UNIX27. Your application must be able to deal with "do not deliver" flags otherwise users may get the same message delivered twice.