Clear ping timer when sockjs closed.

Signed-off-by: Larry Tin <dev@goodow.com>
Revert "Merge pull request #771 from eclipse/http_perf"

This reverts commit a6e861982e8f8bd334ef0a5cd6d0882dfc330832, reversing
changes made to b9855dad3b2ecfb9a8fabd0f9721296bd8850195.
Merge pull request #766 from larrytin/patch-1

Clear ping timer when sockjs closed.
Various optimizations:
 * Allow to use pre-created optimized CharSequence for headers
 * Upgrade to new netty version
 * More performant handling of FlashPolicy
Merge pull request #774 from eclipse/http_perf_fixed

Various optimizations:
upgraded gradle version
Fix netty version
introduce delay after server listening to allow it to bind properly, especially on CI
Merge branch 'master' of github.com:eclipse/vert.x
Adding possibility to use thread context class loader to load cluster configuration file for embedded vert.x

Signed-off-by: Lin Gao <aoingl@gmail.com>
Merge pull request #759 from gaol/cluster_ctx_classloader

Adding possibility to use thread context class loader to load cluster.xml for embedded vert.x
Make sure we use optimized header names when-ever possible
Fix @deprecation warning in log
Merge pull request #775 from eclipse/http_perf_latest

Http perf latest
Remove duplicated code
increase timeout to 1500 for CI
Merge branch 'master' of github.com:eclipse/vert.x
close loophole whereby mutable objects could be put in a JsonObject/JsonArray and transferred from one verticle to another, allowing mutable state to be shared
Added containsField method to JsonObject
Make sure the statusMessage is not dropped. Fixes BZ 425931