createInternalActionId > actionIdCount reaching long.MaxValue #276

Hi,

We have noticed that when actionIdCount reaches long max value this can cause serious issues that include timeouts.
When the count reaches max value, and then is incremented it switches to negative values and can cause collisions.

What I did to fix it is change the method to the below.
Could this be included in the next release please if you agree on this protection?

private string createInternalActionId()
{
	lock (string.Intern("CONNECTIONMANAGER::createInternalActionId::actionIdCount"))
	{
		if (actionIdCount >= long.MaxValue-1)
		{
			actionIdCount = 0;
		}
		return this.GetHashCode() + "_" + (this.actionIdCount++);
	}
}