* Add flowchart illustration to blocks-first section to match new
headers-first flowchart
* Add new headers-first initial block download (IBD) section
* Revise Block Broadcasting section
* Add paragraph about orphan block handling in headers-first to the
Orphan Blocks section
This commit provides a detailed overview of the current block download
method, which I've retroactively named blocks-first for parallelism with
headers-first.
New And Significantly Revised:
* New Initial Block Download (IBD) section (h3) with Blocks-First
subsection (h4)
* New Orphan Block subsection (under Blocks Broadcasting) describing
orphan blocks and how they're handled under blocks-first. Also
includes a simple illustration of the difference between orphan blocks
and stale blocks. Thanks to luke-jr for his s/orphan block/stale
block/ commit a couple months ago---that made this commit much easier.
Edits:
* Cleaned up a couple cases missed by previous s/orphan/stale/ commit
because they used past tense (orphaned).
* In P2P reference section, mentioned that a `block` message can be sent
unsolicited by miners.
* Mention that `getheaders` and `headers` were added in protocol
version 31800.
* Moved a few internal links around and added a few new internal links.
Administrivia:
* Started adding "TODOv0.10" in HTML comments to places that need to be
updated when 0.10 is released so that I can easily git grep for that
tag later.
* Describes all remaining messages except filterload. Specificially, the
following messages are described: Addr, Alert, FilterAdd, FilterClear,
GetAddr, Ping, Pong, Reject, VerAck, and Version
* New makefile test: report broken markdown tables
* Put relevant protocol version changes at the top of all message
subsections.
* Revise P2P Networking section to provide a more detailed description
of initial peer discovery and DNS seeds.
* Tweak autocrossref.rb to allow term blacklisting. Use this new feature
to prevent cross referencing "address" in "IP address" to the
definition of Bitcoin P2PKH/P2SH addresses. This avoids a bunch of
manual "norefs".
Based on feedback from @luke-jr. (Thanks!)
* Use "may" to indicate that full peers don't need to track unconfirmed txes.
* Change the example given for why non-mining peers might want to track
unconfirmed txes.
* Note that txes also get dropped from mempool when memory needs
to be freed.
* Remove paragraph about storing non-relay/non-mine txes.
Thanks also (in alphabetical order) to @cbeams, @mikehearn, and
@tgeller, among others.
The last pre-squash commit was: c2b8d562aa107c7b68c60946cea14cdccc5159ad
