2016-02-02 10:46 GMT+01:00 Mark Thomas <[email protected]>:
> > And the fields from Record are static (obviously) and final. The value
> > returned thus shouldn't be able to change.
>
> But acceptLargeFragments can change via a call to
> SSLSessionImpl.expandBufferSizes().
>
> Correct, thanks, the code has the full explanation actually.
acceptLargeFragments could default to true, which will then cause
getApplicationBufferSize to have the compatible non compliant value:
/**
* Use large packet sizes now or follow RFC 2246 packet sizes (2^14)
* until changed.
*
* In the TLS specification (section 6.2.1, RFC2246), it is not
* recommended that the plaintext has more than 2^14 bytes.
* However, some TLS implementations violate the specification.
* This is a workaround for interoperability with these stacks.
*
* Application could accept large fragments up to 2^15 bytes by
* setting the system property jsse.SSLEngine.acceptLargeFragments
* to "true".
*/
private boolean acceptLargeFragments =
Debug.getBooleanProperty("jsse.SSLEngine.acceptLargeFragments",
false);
I don't plan to port the fix to NIO2 at the moment, since it is a
compatibility flag that can be adjusted by users and it would remove my
buffer flexibility :(
Rémy
