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| author | Livio Recchia <recchialivio@libero.it> | 2020-02-10 23:06:34 +0100 |
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| committer | Livio Recchia <recchialivio@libero.it> | 2020-02-10 23:06:34 +0100 |
| commit | 9a13903a2f7d3a65fdf15a65fb59cccd622e2066 (patch) | |
| tree | 9403b7dff39eb5e5d7fa0f79efb69b496add4c4b /external/construct/protocols/layer4/udp.py | |
| parent | 11cc316b74d5f3f283413a33e7693b314741aa4a (diff) | |
| download | manachat-9a13903a2f7d3a65fdf15a65fb59cccd622e2066.tar.gz manachat-9a13903a2f7d3a65fdf15a65fb59cccd622e2066.tar.bz2 manachat-9a13903a2f7d3a65fdf15a65fb59cccd622e2066.tar.xz manachat-9a13903a2f7d3a65fdf15a65fb59cccd622e2066.zip | |
Initial commit
Diffstat (limited to 'external/construct/protocols/layer4/udp.py')
| -rw-r--r-- | external/construct/protocols/layer4/udp.py | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/external/construct/protocols/layer4/udp.py b/external/construct/protocols/layer4/udp.py new file mode 100644 index 0000000..42a951e --- /dev/null +++ b/external/construct/protocols/layer4/udp.py @@ -0,0 +1,26 @@ +""" +User Datagram Protocol (TCP/IP protocol stack) +""" +from construct import * +import six +from binascii import unhexlify + + +udp_header = Struct("udp_header", + Value("header_length", lambda ctx: 8), + UBInt16("source"), + UBInt16("destination"), + ExprAdapter(UBInt16("payload_length"), + encoder = lambda obj, ctx: obj + 8, + decoder = lambda obj, ctx: obj - 8, + ), + UBInt16("checksum"), +) + +if __name__ == "__main__": + cap = unhexlify(six.b("0bcc003500280689")) + obj = udp_header.parse(cap) + print (obj) + print (repr(udp_header.build(obj))) + + |