Update HandshakeHandler.scala

[faddat]

minimum supported version is now 0.3.0

PR Details

This PR ensures that old nodes do not connect to new nodes.

Motivation and Context

This will fix node synchronization issues.

How Has This Been Tested

I compiled it on my raspberry pi and ran it and the raspberry pi was able to successfully sync.

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[faddat]

will stay draft until a few more checks have been run.

[faddat]

closes #194

[faddat]

@ncying

Initially this looked like it had solve the problem, but it does not seem to. Could you please audit my changes?

To create these changes and I based my approach on what I saw in the waves repository:

https://github.com/wavesplatform/Waves/blob/d419752eeef9776ce46cfbd12733362c91cc5163/node/src/main/scala/com/wavesplatform/network/HandshakeHandler.scala#L146

my changes were intended to say: "connect to nothing with a version lower than 0.3.0

But after maybe 15 minutes of initial success where I saw it connect to and then disconnect from the nasty node, it Reverted to failure.

[faddat]

[faddat]

The latest changes seem to resolve the issue.

I guess it needed a range of versions to work properly.

[faddat]

Or not

[faddat]

Closing, because this did not seem to be an effective solution to issues establishing an initial sync.