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Adding Dandelion++ support to public networks:

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- New flag in NOTIFY_NEW_TRANSACTION to indicate stem mode
  - Stem loops detected in tx_pool.cpp
  - Embargo timeout for a blackhole attack during stem phase
This commit is contained in:
Lee Clagett
2019-11-13 14:12:32 +00:00
parent 7c74e1919e
commit 02d887c2e5
25 changed files with 1562 additions and 171 deletions
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src/blockchain_db/blockchain_db.cpp
+23 -3
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@@ -53,9 +53,7 @@ bool matches_category(relay_method method, relay_category category) noexcept
case relay_category::all:
return true;
case relay_category::relayable:
if (method == relay_method::none)
return false;
return true;
return method != relay_method::none;
case relay_category::broadcasted:
case relay_category::legacy:
break;
@@ -65,6 +63,7 @@ bool matches_category(relay_method method, relay_category category) noexcept
{
default:
case relay_method::local:
case relay_method::stem:
return false;
case relay_method::block:
case relay_method::fluff:
@@ -80,6 +79,7 @@ void txpool_tx_meta_t::set_relay_method(relay_method method) noexcept
kept_by_block = 0;
do_not_relay = 0;
is_local = 0;
dandelionpp_stem = 0;
switch (method)
{
@@ -92,6 +92,9 @@ void txpool_tx_meta_t::set_relay_method(relay_method method) noexcept
default:
case relay_method::fluff:
break;
case relay_method::stem:
dandelionpp_stem = 1;
break;
case relay_method::block:
kept_by_block = 1;
break;
@@ -106,9 +109,26 @@ relay_method txpool_tx_meta_t::get_relay_method() const noexcept
return relay_method::none;
if (is_local)
return relay_method::local;
if (dandelionpp_stem)
return relay_method::stem;
return relay_method::fluff;
}
bool txpool_tx_meta_t::upgrade_relay_method(relay_method method) noexcept
{
static_assert(relay_method::none < relay_method::local, "bad relay_method value");
static_assert(relay_method::local < relay_method::stem, "bad relay_method value");
static_assert(relay_method::stem < relay_method::fluff, "bad relay_method value");
static_assert(relay_method::fluff < relay_method::block, "bad relay_method value");
if (get_relay_method() < method)
{
set_relay_method(method);
return true;
}
return false;
}
const command_line::arg_descriptor<std::string> arg_db_sync_mode = {
"db-sync-mode"
, "Specify sync option, using format [safe|fast|fastest]:[sync|async]:[<nblocks_per_sync>[blocks]|<nbytes_per_sync>[bytes]]."