close #31063

What problem does this PR solve?

cherry-pick from #31081

Issue Number: close #31063

Problem Summary:

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
  + run tcp client -- remember change the ip/port of tidb
  tcp client test code was show latter
  + at tidb.log , you will see the EOF at debug level log and see other errors info in error level log
• No code

# `tcp client` test code
#!/usr/bin/env python    
import socket    
    
TCP_IP = '127.0.0.1'    
TCP_PORT = 4000    
BUFFER_SIZE = 1024    
MESSAGE = ""    
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    
s.connect((TCP_IP, TCP_PORT))    
s.close()

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None