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  1. Core Server
  2. SERVER-33750

ASIO's socket_ops::sync_send must never return a negative value

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.7.3
    • None
    • None
    • Fully Compatible
    • ALL
    • Platforms 2018-03-12
    • 81

    Description

      socket_ops::sync_send captures information about errors in a std::error_code, and apparently ASIO doesn't check that value before it adds the return value (number of bytes sent) to its count of bytes sent already. If sync_send returns -1 (because of an error), it will end up adding that to its count and then resend a byte which corrupts the message.

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            jonathan.reams@mongodb.com Jonathan Reams
            jonathan.reams@mongodb.com Jonathan Reams
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              Created:
              Updated:
              Resolved: