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I haven't seen the OP describe traffic originating from ports 53036, 53037, 53038, 53039.

Geez Louise. Re-read the OPs post but concentrate on a single pair of ports:

  1. The server listens on 4 ports 8020 ....
  2. The client sends the first heartbeat from ports: 53036, ... to ports 8020, ..., This repeats in every 10 seconds.
  3. When server ... [it] replies from ports 8020, ... to ports 53036, ....
  4. If ... the server ... sends them to ports 53036, ....


step | Action | Server | direction | client -----+--------+--------+-----------+------- 1 | Listen | 8020 | | -----+--------+--------+-----------+------- 2 | h'beat | 8020 | <-------- | 53036 Client 53036 originates; S +erver 8020 receives. -----+--------+--------+-----------+------- 3 | resp | 8020 | --------> | 53036 Server 8020 originates; cl +ient 53036 receives. -----+--------+--------+-----------+------- 4 | data | 8020 | --------> | 53036 Server 8020 originates; cl +ient 53036 receives. -----+--------+--------+-----------+-------

4 ports at the server, 4 ports at the client; 4 bi-directional conversations. There is no ambiguity.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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The start of some sanity?

In reply to Re^8: UDP connection by BrowserUk
in thread UDP connection by falstad

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