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  1. MariaDB Server
  2. MDEV-21252

ER_HOST_IS_BLOCKED returns packet sequence 1 instead of 0

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      Description

      I discovered this while trying to debug the go client library.
      https://github.com/go-sql-driver/mysql/issues/1038

      I wrote some scripts to repeat the issue: https://github.com/koshatul/go-mysql-sync-issue

      It only affected MariaDB 10.2+ where the 4th byte of the packet that is sequence is returning 1 instead of 0 when the host is blocked.

      Example:
      Sending 100 broken connections first to trigger the ER_HOST_IS_BLOCKED

      10.0 and 10.1:

      01101000 00000000 00000000 00000000

      10.2, 10.3, 10.4:

      01101000 00000000 00000000 00000001

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              Assignee:
              wlad Vladislav Vaintroub
              Reporter:
              kosh Kosh
              Votes:
              1 Vote for this issue
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                Created:
                Updated:
                Resolved:

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