[BUG] executeWithRetry is not work

[jiachinzhao]

Describe the bug
executeWithRetry is not work

the reason is req.Body can only be readed once.
when req.Body is readed by one clickhouse and clickhouse shutdown, executeWithRetry to another clickhouse will lead to 400 bad request, since req.Body will be empty

To Reproduce
Steps to reproduce the behavior.

set 2 backend clickhouse-server
set config retry_number > 0

1. send request to chproxy
2. shutdown one clickhouse
3. request will failed

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Environment information
Information about OS, chproxy and Clickhouse versions on which issue occures.

Additional context
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[mga-chka]

Thanks for the issue, FYI I warned the creators of this feature. They'll take a look at it within a few days.

[gontarzpawel]

Hello @jiachinzhao, can you tell us if the issue is present for both POST and GET requests? From your description it sounds that retry mechanism does not work while chproxy used with POST

[mga-chka]

since the PR fixing the issue was merged, I'm closing this issue.
We will try to release a new version of chproxy next week.
Feel free to reopen the issue is the fix is not enough