@node nncp-pkt
@pindex nncp-pkt
@section nncp-pkt

@example
$ nncp-pkt [options] < pkt
$ nncp-pkt [options] [-decompress] -dump < pkt > payload
$ nncp-pkt -overheads
@end example

Low level packet parser. Can be useful for debugging. There are two
types of packets: @ref{Plain, plain} and @ref{Encrypted, encrypted}. By
default it will print packet's header, for example:

@example
Packet type: encrypted
Niceness: B (224)
Sender: 2WHBV3TPZHDOZGUJEH563ZEK7M33J4UESRFO4PDKWD5KZNPROABQ (self)
@end example

@option{-dump} option outputs plain packet's payload (if it is file
transmission, then it will be the file itself as an example). If it is
an encrypted packet, then it will be decrypted first, outputing the
included plain packet, that can be fed to @command{nncp-pkt} again:

@example
Packet type: plain
Payload type: transitional
Niceness: B (224)
Path: VHMTRWDOXPLK7BR55ICZ5N32ZJUMRKZEMFNGGCEAXV66GG43PEBQ (name-of-node)

Packet type: plain
Payload type: exec compressed
Niceness: P (96)
Path: stargrave@@stargrave.org
@end example

@option{-decompress} option tries to zstd-decompress data from plain
packet (useful with @verb{|exec compressed|} types of packets).

@option{-overheads} options print encrypted, plain and size header overheads.

This command automatically determines if an encrypted packet belongs to
@ref{Multicast, multicast} area and will try to decrypt it with its
corresponding key.