the amount of time to try to insert into a full buffer before giving up.

ConnState tracks all high-level connection state for this connection, like the combined request and the underlying sorted room list.

EnsurePoller is a gadget used by the sliding sync request handler to ensure that we are running a v2 poller for a given device.

RoomsBuilder gradually accumulates and mixes data required in order to populate the top-level rooms key in the Response.

This is a net.http Handler for sync v3.