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Fix telnet ctrl+c issue #13812

Open hengyoush opened this issue 1 year ago • 2 comments

What is the purpose of the change

fix issue #13812.

when user type 'Ctrl + C' in telnet client, telnet client will send the following sequence: FF F4 FF FD 06 to server, it can be divided into two parts:

  1. 'FF F4' is telnet interrupt process command.
  2. 'FF FD 06' is to suppress the output of the process that is to be interrupted by the interrupt process command.

We need to response with 'FF FC 06' to ignore it and tell the client continue display output.

Brief changelog

  1. add a CtrlCHandler to handle 'Ctrl + C' request
  2. add CtrlCHandler to Netty pipeline , place it previous to LineBasedFrameDecoder

Verifying this change

Checklist

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hengyoush avatar Mar 15 '24 02:03 hengyoush

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 70.45%. Comparing base (0553d70) to head (881a42e). Report is 14 commits behind head on 3.2.

Additional details and impacted files
@@            Coverage Diff             @@
##              3.2   #13921      +/-   ##
==========================================
- Coverage   70.56%   70.45%   -0.12%     
==========================================
  Files        1607     1608       +1     
  Lines       70071    70096      +25     
  Branches    10100    10105       +5     
==========================================
- Hits        49449    49386      -63     
- Misses      16010    16075      +65     
- Partials     4612     4635      +23     

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codecov-commenter avatar Mar 15 '24 03:03 codecov-commenter

Can you pls add some test cases verify it?

I added a unit test, and tested manually: image

hengyoush avatar Mar 21 '24 11:03 hengyoush