RFR: 8263779: SSLEngine reports NEED_WRAP continuously without producing any further output

Wed Mar 31 21:00:43 UTC 2021

As described in the bug, by connecting the SSLEngine with a misbehaving peer SSL implementation, it can get into a state where it calling `wrap` reports getStatus == OK, getHandshakeStatus === NEED_WRAP but still doesn't produce any further output.   It happens when the output bound is not empty.

The handshake status could have more precise status if the out bound.  The patch was confirmed by the bug submitter.

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

Commit messages:
 - 8263779: SSLEngine reports NEED_WRAP continuously without producing any further output

Changes: https://git.openjdk.java.net/jdk/pull/3292/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3292&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263779
  Stats: 44 lines in 3 files changed: 21 ins; 1 del; 22 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3292.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3292/head:pull/3292

PR: https://git.openjdk.java.net/jdk/pull/3292