Open a duplex { readable, writable } pair: readable receives receiveStreamId, writable sends sendStreamId. See Channel#openDuplex.
{ readable, writable }
readable
receiveStreamId
writable
sendStreamId
Optional
Open a duplex
{ readable, writable }pair:readablereceivesreceiveStreamId,writablesendssendStreamId. See Channel#openDuplex.