Bumps [regex](https://github.com/rust-lang/regex) from 1.5.4 to 1.5.6.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](rust-lang/regex@1.5.4...1.5.6)

---
updated-dependencies:
- dependency-name: regex
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

…t/regex-1.5.6

Bump regex from 1.5.4 to 1.5.6 in /pkg/crate/libzt

upgrade gradle versions and include .cxx bindings

Fix memory issue

This adheres to standard Java style and fixes:
Package name 'com.zerotier.sockets' does not correspond to the file path ''

in Android Studio

Move java files to com/zerotier/sockets subfolder

…jclass'.

fix: Incorrect type for parameter 'thisObj', which should have type '…

fix stray GetFieldID

fix bad parameter

update various settings for Android and Gradle

Brenton/fix typos

The practice of appending "__" with type signature allows for references
overloaded methods.
But there is only a single zts_bsd_write method, so just remove.

Fix warning about function never used

* do not remove miniupnpc/VERSION (unsure what previous problem was)
* do not need to export PATH
* do not copy source files, allow gradle to build from source
* leave outputs from gradle (copy to PKG_OUTPUT_DIR instead of move)

Fix a few issues with Android build

…ter now

add new prometheus headers that are now used by ZeroTierOne

Rust demo updates

Remove empty MainActivity.java Android example
fix CMake variable BUILD_EXAMPLES -> BUILD_HOST_EXAMPLES
fix some names in example usage messages:
pingable-node -> callbackapi
client -> nonblockingclient
server -> nonblockingserver
pingable-node -> statistics

Update examples:

Brenton/fix typos

Brenton/fix links

libzt/src/bindings/java/JavaSockets.cxx:40:10: warning: unused variable 'rs' [-Wunused-variable]
libzt/src/Events.cpp:185:14: warning: unused variable 'rs' [-Wunused-variable]
libzt/src/Events.cpp:189:18: warning: unused variable 'arg' [-Wunused-variable]
libzt/src/NodeService.cpp:1064:17: warning: variable 'err' set but not used [-Wunused-but-set-variable]

…ets_ZeroTierNative_zts_1net_1get_1mac.

Using a wildcard in cp was breaking the command when more than 1 file is
present
```
brenton@Brentons-MacBook-Air libzt % ./build.sh android-aar "release"

<< build release aar >>

brenton@Brentons-MacBook-Air libzt % 
brenton@Brentons-MacBook-Air libzt % ./build.sh android-aar "debug"  

<< build debug aar >>

...

BUILD SUCCESSFUL in 48s
33 actionable tasks: 28 executed, 5 up-to-date
cp: target '/Users/brenton/development/github/libzt/dist/android-any-android-debug/libzt-debug.aar': No such file or directory
/Users/brenton/development/github/libzt

 - Build cache  : /Users/brenton/development/github/libzt/cache/android-any-android-debug
 - Build output : /Users/brenton/development/github/libzt/dist

0	/Users/brenton/development/github/libzt/dist/android-any-android-debug
brenton@Brentons-MacBook-Air libzt %
```

Not any of these functions are used in ZeroTierNative.java

libzt/src/bindings/java/JavaSockets.cxx:600:1: warning: non-void function does not return a value [-Wreturn-type]
libzt/src/bindings/java/JavaSockets.cxx:620:1: warning: non-void function does not return a value [-Wreturn-type]
libzt/src/bindings/java/JavaSockets.cxx:629:1: warning: non-void function does not return a value [-Wreturn-type]
libzt/src/bindings/java/JavaSockets.cxx:638:1: warning: non-void function does not return a value [-Wreturn-type]

fix unused warnings

fix: Cannot resolve corresponding JNI function Java_com_zerotier_sock…

fix return type warnings

…ectory-error

fix 'No such file or directory' error

…r/ZeroTierOne#2075)

Fix typos and bump ZTO submodule commit to include Fix typos (https:/…

…ckTunnel' [-Wreorder-ctor]

…itch [-Wswitch]

Fix: field '_lastRestart' will be initialized after field '_tcpFallba…

Fix: warning: enumeration value 'TCP_HTTP_OUTGOING' not handled in sw…

Remove second bind() with unused backlog arg and identical impl as first
bind()

…long'.

Incorrect return type uint64_t, which should have been jlong.
Incorrect return type uint64_t, which should have been jlong.
Incorrect return type uint64_t, which should have been jlong.

Fix: Cannot resolve symbol 'localPort'

Fix: Incorrect type for parameter 'net_id', which should have type 'j…

When processing events, AttachCurrentThread is called, but matching
DetachCurrentThread was not being called

This prevented main thread from exiting

Fix #242

warning: incompatible pointer types passing 'int *' to parameter of type 'unsigned short *' [-Wincompatible-pointer-types]

These mimic IN6ADDR_ANY_INIT and in6addr_any

For setting sin6_addr in zts_sockaddr_in6:
```
struct zts_sockaddr_in6 addr6;
addr6.sin6_addr = zts_in6addr_any;
```

This was running many optimization passes and preventing debugging

And clean up finding JNI in general
Tested on Mac, Linux, and Android

add ZTS_IN6ADDR_ANY_INIT and zts_in6addr_any

Fix fatal error: jni_md.h: No such file or directory

Remove debug optimization -O3

Fix warning: [cast] redundant cast to int

fix formatting

fix examples warnings

Memory leak if libzt events aren't consumed by user app
If arg is not enqueued by Events, then treat as if ownership has NOT
been transferred and caller of Events->enqueue is responsible for freeing

Fix #211: Use tcpip_input for IPv6 instead of ethernet_input