Bug ID: JDK-8211308 Support HTTP/2 in WebView

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openjfx11.0.13Fixed

Currently WebView makes uses of JDK's URLConnection class to serve HTTP requests. Since JDK11, java.net module also supports HTTP/2 using new set of interfaces as described in JDK-8181784.

Goals:
 - Only http/https schemes supported
 - Runtime property will be provided to fallback to legacy HTTP API
 - Both Sync/Async requests has to be supported

Non Goals:
 - Using WebSocket implementation from java.net.http

Changeset: 98035cb Author: Arunprasad Rajkumar Date: 2019-12-03 08:24:01 +0000 URL: https://git.openjdk.java.net/jfx/commit/98035cb2 8211308: Support HTTP/2 in WebView Reviewed-by: ghb, kcr
04-12-2019
The PR has been integrated, so this JBS enhancement can now be Resolved as Fixed.
03-12-2019
Review: https://github.com/openjdk/jfx/pull/14
03-12-2019
Removing review-requested label. With the impending move of the jfx repo to GitHub, this will need to be resubmitted as a pull request against https://github.com/openjdk/jfx in order for the review to proceed.
01-10-2019
Out of time for openjfx13. Will want to do this early in openjfx14 to get plenty of testing.
23-07-2019
Ok, that sounds a good approach.
21-03-2019
Right. So the plan will be to detect the JDK version and fall back to existing HTTP implementation if JDK is < 12.
21-03-2019
[~jvos], Though this uses JDK 11 HttpClient APIs, it needs latest JDK 12 to work correctly due to the dependency on following issues, JDK-8218546 Unable to connect to https://google.com using java.net.HttpClient JDK-8218662 Allow 204 responses with Content-Length:0 JDK-8203850 java.net.http HTTP client should allow specifying Origin and Referer headers
21-03-2019
Why is this blocked on JDK 12 (JDK-8221097) ?
21-03-2019

Blocks :	JDK-8219213 - Unable to use BodySubscribers.mapping with InputStream as mentioned in the doc
Blocks :	JDK-8203850 - java.net.http HTTP client should allow specifying Origin and Referer headers
Blocks :	JDK-8218662 - Allow 204 responses with Content-Length:0
Blocks :	JDK-8218546 - Unable to connect to https://google.com using java.net.HttpClient
Blocks :	JDK-8221097 - Switch FX build to use JDK 12 as boot JDK
Relates :	JDK-8246215 - WebView does not care "HttpsURLConnection.setDefaultSSLSocketFactory()"
Relates :	JDK-8242077 - Add information about HTTP/2 and HttpClient usage in WebEngine
Relates :	JDK-8286052 - Proxy-authorization header not sent anymore with WebView
Relates :	JDK-8281048 - HCAPTCHA not supported