Fix Error code : 87

[smallru8]

Win32API ReadFile WriteFile need OVERLAPPED parameter or remove FILE_FLAG_OVERLAPPED flag.
I have tested it in win10, and it can read and write tap device normally.

[rds13]

I don't expect visual code files to be usefull for this MR, aren't they ?

[tleguern]

Hello @smallru8, can you remove the build32 and build64 folders? I don't think they are needed here and they take unnecessary space in the repository.

Files allowing libtuntap to be used in another language such as Java should be located in bindings/java just like we have folders for Python and C++.
It allows to enable or disable them selectively and not clutter the main library.

I pushed two commits (8fd6125 and 173ee44) implementing just this in branch BounceGateVPN-master so you can cherry-pick them.
You can also allow me to make change directly to your PR if it is more convenient.

I implemented a third commit (ac05686) modifying the target to output a new library named libtuntap4j which includes your JNI interface.

[smallru8]

Hello @Aversiste , I'm sorry i forgot to delete build32 and build64 folders. I have deleted them.

I have also fixed and adjusted some problems.

Fix read and write functions may cause memory leak.
Change reading network packets by 512-bytes to tuntap_get_mtu return value.
Move com_github_smallru8_driver_tuntap_TunTap and converter to bindings.
Add libtuntap4J java interface source for user to call.

[tleguern]

Excellent, thank you.

If it is possible I would like to add an automatic test to our CI pipeline using your Test.java, but I fail to execute it:

$ /usr/local/jdk-11/bin/java Test.java
Test.java:13: error: cannot find symbol
        TunTap tt = new TunTap();
        ^
  symbol:   class TunTap
  location: class Test
Test.java:13: error: cannot find symbol
        TunTap tt = new TunTap();
                        ^
  symbol:   class TunTap
  location: class Test
2 errors
error: compilation failed

My Java skills are pretty much non existent, so what is going wrong?

[tleguern]

Why are you closing this PR ? It seemed good.