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We've got a customer experiencing session crashes with our emulator. And they've called in IBM to look at it.

The connections are, so far as I know, all Secured TN5250.

The IBM representative saw indications that we were sending a 70-kilobyte(!!) encrypted packet, which they assumed was an insanely huge response to a "save" command.

We've been having them do buffer-dumps, using diagnostic functions built into our emulator. I've gone through ten of them so far, NOTHING has (at least in unencrypted form) approached even a 2kb transmission: the longest save response so far has been 1132 bytes, and the longest read-MDT-fields response has been 1051 bytes.

Which is to say that the crashes have occurred on both save commands and read-MDT-fields commands, and in one case, the timestamps tell me that the connection crashed BEFORE the emulator sent a response to the last chain received from the host.

I'm stumped. Anybody know of something that could make an AS/400 think it was getting a 70k packet?

--
JHHL

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