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Adapt ChangeLog: Usage restriction for WANT_READ

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Hanno Becker 2017-10-12 07:46:41 +01:00
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commit c53826b459
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ChangeLog
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@ -2,6 +2,15 @@ mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS x.x.x branch released xxxx-xx-xx
Bugfix
* Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
where data needs to be fetched from the underlying transport in order
to make progress. Previously, this error code was also occasionally
returned when unexpected messages were being discarded, ignoring that
further messages could potentially already be pending to be processed
in the internal buffers; these cases lead to deadlocks in case
event-driven I/O was used. Found by Hubert Mis.
API changes
* Add function mbedtls_net_poll to public API allowing to wait for a
network context to become ready for reading or writing.