* use require in benchmark tests
* translate the QLOGDIR test
* translate handshake tests
* translate the handshake RTT tests
* translate the early data test
* translate the MTU tests
* translate the key update test
* translate the stateless reset tests
* translate the packetization test
* translate the close test
* translate the resumption test
* translate the tracer test
* translate the connection ID length test
* translate the RTT tests
* translate the multiplexing tests
* translate the drop tests
* translate the handshake drop tests
* translate the 0-RTT tests
* translate the hotswap test
* translate the stream test
* translate the unidirectional stream test
* translate the timeout tests
* translate the MITM test
* rewrite the datagram tests
* translate the cancellation tests
* translate the deadline tests
* translate the test helpers
This context has the same value attached to it as the context returned
by Session.Context().
In the case of a dialed connection, this context is derived from the
context used for dialing.
Recording every sent and received packet in OpenCensus is quite expensive.
Arguably, the metrics needs depend on the application, so that's where the
implementation of a metrics collector should live anyway.
