TODO

QUIC

stream prioritization
- lsquic_stream_set_priority/lsquic_stream_set_priority for quic
- lsquic_stream_get_http_prio/lsquic_stream_set_http_prio for h3
session resumption
push promises
connection migration

connection

expose lsquic_conn_n_avail_streams()?
expose lsquic_conn_n_pending_streams/lsquic_conn_cancel_pending_streams?
option to pre-allocate stream_impls based on negotiated limits?
otherwise save closed streams and recycle them

UDP

send packets with IP_PKTINFO
use sendmmsg()/recvmmsg() to reduce the number of system calls

h3

allocator support for fields

Async

maybe remove all synchronous interfaces and locking?
template everything on Executor type? difficult because it requires a lot more of the implementation in header files, and lsquic dependency is hidden from headers

Boost vs. Standalone Asio

add #define to choose (along with std:: vs. boost::system::error_code)
then go finish std::net so we can use that instead

test coverage

stream and connection is_open()
connection errors from stream interfaces
connection_impl lifetime vs handlers
socket_impl lifetime vs handlers

possibly-interesting stuff not supported by lsquic

sending application errors via RESET_STREAM or CONNECTION_CLOSE
receiving application errors from RESET_STREAM
generic unidirectional streams
getting a callback after shutdown(1) once all data is acked, so no async_shutdown(1). this only works for close via es_delay_onclose