36 lines
1.2 KiB
Lua
36 lines
1.2 KiB
Lua
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mpbl3p_udp = Proto("mpbl3p_udp", "Multi Path Proxy Custom UDP")
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ack_F = ProtoField.uint32("mpbl3p_udp.ack", "Acknowledgement")
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nack_F = ProtoField.uint32("mpbl3p_udp.nack", "Negative Acknowledgement")
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seq_F = ProtoField.uint32("mpbl3p_udp.seq", "Sequence Number")
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time_F = ProtoField.absolute_time("mpbl3p_udp.time", "Timestamp")
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proxied_F = ProtoField.bytes("mpbl3p_udp.data", "Proxied Data")
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mpbl3p_udp.fields = { ack_F, nack_F, seq_F, time_F, proxied_F }
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function mpbl3p_udp.dissector(buffer, pinfo, tree)
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if buffer:len() < 20 then
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return
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end
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pinfo.cols.protocol = "MPBL3P_UDP"
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local ack = buffer(0, 4):le_uint()
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local nack = buffer(4, 4):le_uint()
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local seq = buffer(8, 4):le_uint()
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local unix_time = buffer(buffer:len() - 8, 8):le_uint64()
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local subtree = tree:add(mpbl3p_udp, buffer(), "Multi Path Proxy Header, SEQ: " .. seq .. " ACK: " .. ack .. " NACK: " .. nack)
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subtree:add(ack_F, ack)
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subtree:add(nack_F, nack)
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subtree:add(seq_F, seq)
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subtree:add(time_F, NSTime.new(unix_time:tonumber()))
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if buffer:len() > 20 then
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subtree:add(proxied_F, buffer(12, buffer:len() - 12 - 8))
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end
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end
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DissectorTable.get("udp.port"):add(1234, mpbl3p_udp)
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