Aim to be easier for clients to use, because to do peer
discovery we must act as a client to other servers.
Split out JSON session concept from the asyncio protocol
concept. This makes the JSON RPC support more easily
testable and usable as a stand-alone library.
In addition, support JSON RPC v1 and v2, and auto-detection
of peer's version.
So that the main block processor future is cancellable.
We wait for the executor and then flush anything unflushed.
Resolves the rest of the second part of #100
This involved a rewrite of the JSON RPC layer.
I took the opportunity to clean up the handling of requests
in general. It should now be easy to return nice help from
the docstrings.
Closes issue #99
Apart from the flush on shutdown and the flush when caught up,
neither of which matter, this makes flushes asynchronous.
Also, block processing for reorgs is now asynchronous.
This also removes the FORCE_REORG debug envvar; I want to
put that into the RPC interface.
Closes#102
It's less awkward and more explicit.
This brings back the efficiency lost in the 0.9.x series.
It also removes the special case hack: both when syncing and
caught up, block processing is done in the executor.
Fixes#58
Cleanup and simplify touched handling and its event, which is
now controlled and owned by the mempool.
The daemon object owns the set of current mempool hashes.
Clean up and simplify the mempool main loop.
Fixes#70.
When the number of sessions reaches MAX_SESSIONS, which defaults
to 1,000, turn off TCP and SSL listening sockets to prevent new
connections. When the session count falls below a low watermark,
currently 90% of MAX_SESSIONS, the listening sockets will be re-opened.
Helps prevent DoS and limit open file usage.
Bug fix: do not start serving paused connections until the buffer
socket is sufficiently drained. Also, loop.
Pause serving sessions whose socket buffer is full (anti-DoS)
Serve requests in batches of 8
Don't store the session in the request
RPC has priority 0; every other session at least 1
Periodically consolidate small session groups into 1
Neil Booth