zmq code checks and impovements #276

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opened 2022-02-11 16:29:33 +00:00 by pavel.baykov · 7 comments

pavel.baykov commented

2022-02-11 16:29:33 +00:00

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Check ZMQ ports and traffic, it happened that we lost ZMQ or send to wrong port
Need to check if ZMQ, bitcoin provides a way to control if we actually established connection
We don't parse all from ZMQ, check if we need it

Check ZMQ ports and traffic, it happened that we lost ZMQ or send to wrong port Need to check if ZMQ, bitcoin provides a way to control if we actually established connection We don't parse all from ZMQ, check if we need it

pavel.baykov commented

2022-02-11 16:29:33 +00:00

(Migrated from gitlab.com)

assigned to @pavel.baykov

pavel.baykov commented

2022-02-14 15:24:58 +00:00

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using lsof, netstat verified that zmq use port 11111

pavel.baykov commented

2022-02-14 15:26:22 +00:00

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using https://github.com/whitequark/zmtp-wireshark Wireshark ZMQ plugin and pcap captured with tcpdump
checked validity of the stream, each message have 3 Data Frames

using https://github.com/whitequark/zmtp-wireshark Wireshark ZMQ plugin and pcap captured with tcpdump checked validity of the stream, each message have 3 Data Frames

pavel.baykov commented

2022-02-15 13:13:27 +00:00

(Migrated from gitlab.com)

based on
https://github.com/bitcoin/bitcoin/pull/14687
and https://github.com/bitcoin/bitcoin/issues/12754
we need to check Bitcoin node with
sudo sysctl -w net.ipv4.tcp_keepalive_time=600 or lower
by default it’s 7200

capture pcap and check with Wireshark with plugin posted above

based on https://github.com/bitcoin/bitcoin/pull/14687 and https://github.com/bitcoin/bitcoin/issues/12754 we need to check Bitcoin node with sudo sysctl -w net.ipv4.tcp_keepalive_time=600 or lower by default it’s 7200 capture pcap and check with Wireshark with plugin posted above

pavel.baykov commented

2022-02-15 13:14:46 +00:00

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as a reference from Bitcoin code the same functionality:
37a7fe9e44/contrib/zmq/zmq_sub.py

as a reference from Bitcoin code the same functionality: https://github.com/bitcoin/bitcoin/blob/37a7fe9e440b83e2364d5498931253937abe9294/contrib/zmq/zmq_sub.py

Hiltos1 commented

2022-02-15 14:52:34 +00:00

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Not sure if this might be useful to you, but I've created a ZMQ Utility for our BTC-SONs: https://gitlab.com/PBSA/tools-libs/zmq-for-btc-sons