flaky failure solved

[Alisha-0321]

The flaky test failure is resolved with my fixes. I run the test 10,000 times, and every time the test passes.

Description

try {
Thread.sleep(100);
} catch (InterruptedException e) {
System.out.println("Exception");
}

Related Issue

#1296

Motivation and Context

This removes the test failures.

How Has This Been Tested?

With my solution, I run the test 10,000 times with the following command, and the test has never failed.
mvn test -Dtest=org.java_websocket.issues.Issue580Test#runNoCloseBlockingTestScenario[7]

Types of changes

• 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.

[marci4]

We cannot simple sleep in the main code