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[feat] Add extra error output on lost server error to indicate possible SSL mismatch (#1584) #1609

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Merged
scottnemes merged 2 commits into from
Feb 24, 2026
Merged

[feat] Add extra error output on lost server error to indicate possible SSL mismatch (#1584) #1609

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de5bfc7
Add extra error output on lost server error to indicate possible SSL …
scottnemes Feb 22, 2026
7823301
Synced from main and added ='s to error message
scottnemes Feb 24, 2026
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1 change: 1 addition & 0 deletions changelog.md
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ Features
* Let the `--dsn` argument accept literal DSNs as well as aliases.
* Accept `--character-set` as an alias for `--charset` at the CLI.
* Add SSL/TLS version to `status` output.
* Add extra error output on connection failure for possible SSL mismatch (#1584)
* Accept `socket` as a DSN query parameter.
* Accept new-style `ssl_mode` in DSN URI query parameters, to match CLI argument.
* Fully deprecate the built-in SSH functionality.
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11 changes: 11 additions & 0 deletions mycli/main.py
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Expand Up @@ -46,6 +46,7 @@
from prompt_toolkit.output import ColorDepth
from prompt_toolkit.shortcuts import CompleteStyle, PromptSession
import pymysql
from pymysql.constants.CR import CR_SERVER_LOST
from pymysql.constants.ER import ACCESS_DENIED_ERROR, HANDSHAKE_ERROR
from pymysql.cursors import Cursor
import sqlglot
Expand Down Expand Up @@ -724,6 +725,16 @@ def _connect(retry_ssl: bool = False, retry_password: bool = False) -> None:
)
connection_info["password"] = new_password
_connect(retry_password=True)
elif e1.args[0] == CR_SERVER_LOST:
self.echo(
(
"Connection to server lost. If this error persists, it may be a mismatch between the server and "
"client SSL configuration. To troubleshoot the issue, try --ssl-mode=off or --ssl-mode=on."
),
err=True,
fg='red',
)
raise e1
else:
raise e1

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