Discussion:
BJNP protocol
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Ralph Little
2017-10-13 18:51:23 UTC
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Hi,Do any of the SANE Pixma devs (I guess primarily Rolf) have any documentation of the BJNP protocol so far as scanning is concerned?If so, could I get a hold of a copy?I guess I could figure it out with a code read but if someone had something written down, then that would save me a lot of work.
Cheers,Ralph
Louis Lagendijk
2017-10-13 21:02:08 UTC
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Post by Ralph Little
Hi,
Do any of the SANE Pixma devs (I guess primarily Rolf) have any
documentation of the BJNP protocol so far as scanning is concerned?
If so, could I get a hold of a copy?
I guess I could figure it out with a code read but if someone had
something written down, then that would save me a lot of work.
Cheers,
Ralph
Hi Ralph
No there is no documentation. reverse engineered the protocol based on
the traces of the Ip-packets.
So reading the code (especially pixma_bjnp_private.h) is the way to go.
Most communication happens using UDP, but the transfer of the scanned
data happens over TCP.

Cheers, Louis

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