8195649: reorganize tests for java.util.Optional Reviewed-by: XXX

Initial changes for JDK-8195649

http-client-branch: fixed race condition when resubscribing with SocketTube

Fix non-PCH build

Rehash messages printed by Epsilon

Whitespace, formatting, dead code elimination

Purge unused young counters from monitoring

Update copyrights

Trim Epsilon BarrierSet after upstream changes

Merge

http-client-branch: merge with default

Merge

http-client-branch: fix HTTP/1.1 retry to avoid duplication of header values

Merge

http-client-branch: minor cleanup in HttpRequestImpl

http-client-branch: verify that send/sendAsync will throw IAE and NPE as specified by HttpRequest.Builder

http-client-branch: (WebSocket) from IOE to IAE in sendClose with bad reason

http-client-branch: supplementary review comments

http-client-branch: missing <p>

http-client-branch: API note about sendPong

http-client-branch: (WebSocket) almost missed the CSR train

http-client-branch: Early Review comments for JDK-8199938 Supplementary minor HTTP Client spec clarifications

http-client-branch: bye, bye, SSLDelegate

http-client-branch: (WebSocket) javadoc typos

http-client-branch: (WebSocket) remove notion of partial/parts/whole messages (RFC 6455 says text and binary can be streamed unrestricted); introduce pending send operations to refer to them later in about and sendText/sendBinary

http-client-branch: typo

http-client-branch: (WebSocket) alleviated heavy use of {@code WebSocket} in the javadoc; more details on Listener methods

http-client-branch: minor HttpClient.send exception correction

http-client-branch: minor WebSocket.Listener re-wording

http-client-branch: (WebSocket) API wording for back-pressure

http-client-branch: (WebSocket) remove close timer

http-client-branch: RawChannel implementation based on FlowTube

http-client-branch: (WebSocket) split pending operations tests, otherwise it took them too long to run

http-client-branch: (WebSocket) full-duplex DummyWebSocketServer; tests stabilization & fixes

http-client-branch: (WebSocket) autopong on a closed channel is not an error + test

http-client-branch: (WebSocket) no error after abort

http-client-branch: (WebSocket) abort tests

http-client-branch: (WebSocket) removed MessagePart

http-client-branch: (HttpClient) faulty assertion, some tests fail

http-client-branch: (WebSocket) API changes + test;

http-client-branch: split large WebSocket test into three

http-client-branch: HTTP references in java.net package

http-client-branch: add a test for 8199683; make sure no data is left in the queue after server closes the connection

http-client-branch: (WebSocket) open tests; internal queue cap (close); logging;

Fix merge error.

Merge from default

Merge

Merge from default

Really fix windows RC problem.

Try to fix RC_FLAGS issue on windows.

http-client-branch: add debug flags to WebSocketTest

http-client-branch: (WebSocket) logging typos and leftovers

http-client-branch: add more diagnosis to detachChannel

http-client-branch: change websocket to use System.Logger for debug logging

http-client-branch: (WebSocket) swapping automatic pong replies

Merge

Fix build for jdk.hotspot.agent.

http-client-branch: create temp test files in current working directory

http-client-branch: fix race condition between WebSocket and PlainHttpConnection::detachChannel

http-client-branch: race condition in RedirectMethodChange test

http-client-branch: (WebSocket) uninitialized variable

http-client-branch: merge

http-client-branch: (WebSocket) DEBUG logging off

http-client-branch: (WebSocket) logging and closure timer

http-client-branch: (WebSocket) debug logging

http-client-branch: (merge)

http-client-branch: (WebSocket) setting DEBUG to true; refactoring;

http-client-branch: (WebSocket) minor cleanup

http-client-branch: expand RedirectMethodChange test to cover HTTP2 and HTTPS

http-client-branch: fix for subscribers throwing in onSubscribe

Introduce SetupJdkLibrary and SetupJdkExecutable.

http-client-branch: added some comments to test/jdk/java/net/httpclient/ThrowingSubscribers.java

Merge

Merge with default

Create ihse-jdk-library-branch

http-client-branch: verify that dependent actions registered by the user in the CF we return are always executed either in the user thread that joins or asynchronously in the executor.

http-client-branch: changed Redirect enums and implemented RFC 7231 auto redirect POST to GETs

http-client-branch: link default proxy to system properties

Make sure Epsilon barriers are under INCLUDE_ALL_GCS

http-client-branch: add a test for the default proxy selector

Remove obsolete CH/BS interface calls

Merge

http-client-branch: additional test coverage for ofFileDownload

http-client-branch: test for default impl of newWebSocketBuilder

http-client-branch: improved failure report in ThrowingSubscribers

http-client-branch: rename jdk.internal.httpclient.disableHostnameVerification property

http-client-branch: rename jdk.httpclient.internal.selector.timeout property

http-client-branch: test update for disableHostnameVerification

http-client-branch: (WebSocket) test fix + output closure

http-client-branch: Add a test that throws unexpected exception in PushPromiseHandler

http-client-branch: null checking in send[Async]

http-client-branch: add some WebSocketTests to the ProblemList

http-client-branch: tests should bind to the loopback only

http-client-branch: filtering ordering

http-client-branch: (WebSocket) impl change

http-client-branch: Enable HTTP/1.1 server logging in DigestEchoClient.java