[jdk11u-dev] RFR: 8270344: Session resumption errors

[Martin Doerr]

Clean backport of JDK-8270344. Only empty line removal in 'TransportContext.java' didn't apply (skipped).

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Commit messages:
 - Backport 04a806ec86a388b8de31d42f904c4321beb69e14

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/370/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=370&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8270344
  Stats: 184 lines in 3 files changed: 162 ins; 20 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/370.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/370/head:pull/370

PR: https://git.openjdk.java.net/jdk11u-dev/pull/370