Question About StreamOpen

[zdh3303]

hi, when I use StreamOpen with flag QUIC_STREAM_OPEN_FLAG_0_RTT on the server side, however on the other side, I receive the Event QUIC_CONNECTION_EVENT_PEER_STREAM_STARTED , however QUIC_STREAM_OPEN_FLAGS type = Event->PEER_STREAM_STARTED.Flags; this value is zero (QUIC_STREAM_OPEN_FLAG_NONE), not same as the server side's.

[nibanks]

That flag, QUIC_STREAM_OPEN_FLAG_0_RTT, is merely a hint to the API that says "This stream data is allowed to be sent in 0-RTT". It doesn't mean it will always use 0-RTT. A number of conditions have to happen first, primarily that the connection actually supports and uses TLS resumption and 0-RTT. My guess is that is not happening.

To use 0-RTT, you must use OpenSSL TLS (Schannel doesn't support it yet). Also, you must initially connect to the server and get a resumption ticket (received via the QUIC_CONNECTION_EVENT_RESUMPTION_TICKET_RECEIVED event). Then, on your next connection to the server, supply that token via SetParam with the QUIC_PARAM_CONN_RESUMPTION_TICKET parameter.

We don't have great docs or a sample for this yet. Might be a good idea to add both... @anrossi?

[zdh3303]

thanks, I have another question , I want to create two stream(each stream has its own function) , how can I let the other side seperate the streams, and do some different works acording to the different stream

[nibanks]

how can I let the other side seperate the streams

They will get two separate peer stream started events. They can then do whatever they want with them.