rustdesk / rustdesk/rustdesk-server

Client constantly tries to conenct to port 21114/tcp

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#611 5 comments 0 reactions 0 assignees View on GitHub

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bug
Dominant language
Rust
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Description

Describe the bug
The clients sonstantly try to connect to port 21114/tcp on the server. The server is the open source version and does not respond on this port.
Furthermore this port is closed (dropping packets) in the server firewall because it is not used. This leads to a lot of tcp retransmissions.

Describe the environment

  • Install environment: package
  • If package, we need the distribution and release: FreeBSD 14.3
  • server 1.1.14, client 1.4.3

How to Reproduce the bug
Steps to reproduce the behavior:

  1. install open source server
  2. conenct client
  3. see endless connection attempts

Expected behavior
On an open source server the client should not try to connect to port 21114 or the server should respond with a "here is nothing" message that stops connection attempts from the client.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the behavior with an open-source server on FreeBSD 14.3, using server 1.1.14 and client 1.4.3, and observe the repeated connections to port 21114/tcp. Trace the client/server connection handling to determine why attempts continue; done means the client no longer repeatedly connects to that unused port or receives a response that stops the attempts.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
networking
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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