Create a new Transports instance
the available subtransports
The emitter for emitting events on this stream
The available subtransports
Get a new CascadeDriver with a given set of options
the options from which to create a driver.
the cascade driver if the options
contain valid
transports, otherwise null
Create a new Transports object.
allows specifying the available subtransports for testing. If not specified, the Subtransports * will be used.
Encapsulate the set of available transport mechanisms and expose them in an implementation independent manner.