RFR: 8274524: SSLSocket.close() hangs if it is called during the ssl handshake [v4]

[Xue-Lei Andrew Fan]

On Wed, 3 Nov 2021 17:02:40 GMT, Alexey Bakhtin <abakhtin at openjdk.org> wrote:

>> Please review the patch for JDK-8274524
>> 
>> The fix just adds locks around InputStream read and skip operations to prevent concurrent read from socket.
>> sun/security/ssl jtreg tests passed
>> api/javax_net/ssl/SSLSocket/setUseClientMode jck test passed
>
> Alexey Bakhtin has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix jcheck issues

With the patch, the readLock is placed in handshakeLock, and the handshake may require lock write lock.  These nested lock is pretty risk and will run into deadlocks.  That's the underlying reason why readHandshakeRecord() is not placed within read lock and write lock.

It looks like the problem is cause by close() method.  Maybe, improving the close() implementation could be an alternative solution.

-------------

PR: https://git.openjdk.java.net/jdk/pull/5760