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| author | Pieter Wuille <pieter.wuille@gmail.com> | 2014-07-12 00:02:35 +0200 |
|---|---|---|
| committer | Pieter Wuille <pieter.wuille@gmail.com> | 2014-10-14 15:42:01 -0700 |
| commit | 341735eb8f42e898cf9d4d130709471e5d01abe2 (patch) | |
| tree | 7986b1d3056a776e3423d75353b3282a99edbd44 /src/version.h | |
| parent | 992ab87114b8c9ea8230e97a9c8d8bd71939074d (diff) | |
Headers-first synchronization
Many changes:
* Do not use 'getblocks', but 'getheaders', and use it to build a headers tree.
* Blocks are fetched in parallel from all available outbound peers, using a
limited moving window. When one peer stalls the movement of the window, it is
disconnected.
* No more orphan blocks. At all. We only ever request a block for which we have
verified the headers, and store it to disk immediately. This means that a
disk-fill attack would require PoW.
* Require protocol version 31800 for every peer (released in december 2010).
* No more syncnode (we sync from everyone we can, though limited to 1 during
initial *headers* sync).
* Introduce some extra named constants, comments and asserts.
Diffstat (limited to 'src/version.h')
| -rw-r--r-- | src/version.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/version.h b/src/version.h index 75cbec39b7..a1e440de24 100644 --- a/src/version.h +++ b/src/version.h @@ -33,8 +33,11 @@ static const int PROTOCOL_VERSION = 70002; // initial proto version, to be increased after version/verack negotiation static const int INIT_PROTO_VERSION = 209; +// In this version, 'getheaders' was introduced. +static const int GETHEADERS_VERSION = 31800; + // disconnect from peers older than this proto version -static const int MIN_PEER_PROTO_VERSION = 209; +static const int MIN_PEER_PROTO_VERSION = GETHEADERS_VERSION; // nTime field added to CAddress, starting with this version; // if possible, avoid requesting addresses nodes older than this |