[dtn-users] Use of metadata with DTNSEND and DTNRECV

[Luca Tartarini <[e-mail]>]

Dear DTN2 users, I am a student of the University of Bologna and I
am carrying out a thesis on the possible use of metadata for DTN routing. I
have a problem in the use of metadata with the applications DTNSEND
and DTNRECV, DTN2 2.9.0 on Debian.
If I try to send a bundle with metadata from vm1.dtn to vm2.dtn launching
this command on vm1.dtn:
vm1: dtnsend -v -s dtn://vm1.dtn/me -d dtn://vm2.dtn -t m -p "testing3"
-M 1 -S "meta"
while on vm2.dtn dtnrecv is running (vm2: dtnrecv -v dtn://vm2.dtn)
I do not receive anything on vm2.dtn, while in the dtn.log of vm1.dtn I can
see the following two errors:

[1354724317.364108 /dtn/bundle/protocol error]
BundleProtocol::prepare_blocks: 8-prepare returned BP_FAIL on bundle 10
[1354724317.364128 /dtn/bundle/actions error]
BundleActions::queue_bundle:
prepare_blocks returned NULL on bundle 10

Note that:
1) without the -M option the bundle is received correctly (of
course without metadata).
2) if the source and the destination are the same, i.e. if I launch:
vm1: dtnsend -v -s dtn://vm1.dtn/me -d dtn://vm1.dtn -t m -p "testing3"
-M 1 -S "meta"
both the bundle and metadata are received correctly.

Any help will be greatly appreciated.

Thanks, Luca Tartarini.