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openssl: when creating a new context, there cannot be an old one #7585

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@bagder bagder commented Aug 17, 2021

Remove the previous handling would call SSL_CTX_free() and instead add
an assert that will halt a debug build if there ever is a context
already set at this point.

Remove the previous handling would call SSL_CTX_free() and instead add
an assert that will halt a debug build if there ever is a context
already set at this point.
@bagder bagder added the TLS label Aug 17, 2021
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@danielgustafsson danielgustafsson left a comment

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Makes sense.

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jay commented Aug 17, 2021

The check was initiated in 1946058 from 2006 and I would guess no longer relevant. The CTX is freed when the connection is closed (conn_shutdown). A cursory look shows the ossl connection steps are only initiated from MSTATE_PROTOCONNECT when protocol_connect is called, and then when the steps are done (ie ssl connection phase complete) the ossl connect state machine is reset to ssl_connect_1. Could there ever be a time now when the connection is not closed and step 1 is repeated?

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bagder commented Aug 17, 2021

Could there ever be a time now when the connection is not closed and step 1 is repeated?

No, that would be seriously wrong and that's why I put the assert there.

@bagder bagder closed this in 0da1356 Aug 18, 2021
@bagder bagder deleted the bagder/openssl-free-ctx branch August 18, 2021 12:12
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