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net: attempt v2 transport for manual connections if we support it

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This affects manual connections made either with -connect, or with
-addnode provided as a bitcoind config arg (the addnode RPC has an
extra option for v2).

We don't necessarily know if our peer supports v2, but will reconnect
with v1 if they don't. In order to do that, improve the reconnection
behavior such that we will reconnect after a sleep of 500ms
(which usually should be enough for our peer to send us their
version message).
This commit is contained in:
Martin Zumsande 2023-12-11 14:37:56 -05:00
parent d5e5810bd3
commit 770c0311ef
2 changed files with 11 additions and 6 deletions
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10
src/net.cpp
View file

@ -2423,12 +2423,15 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect)
// Connect to specific addresses
if (!connect.empty())
{
// Attempt v2 connection if we support v2 - we'll reconnect with v1 if our
// peer doesn't support it or immediately disconnects us for another reason.
const bool use_v2transport(GetLocalServices() & NODE_P2P_V2);
for (int64_t nLoop = 0;; nLoop++)
{
for (const std::string& strAddr : connect)
{
CAddress addr(CService(), NODE_NONE);
OpenNetworkConnection(addr, false, {}, strAddr.c_str(), ConnectionType::MANUAL, /*use_v2transport=*/false);
OpenNetworkConnection(addr, false, {}, strAddr.c_str(), ConnectionType::MANUAL, /*use_v2transport=*/use_v2transport);
for (int i = 0; i < 10 && i < nLoop; i++)
{
if (!interruptNet.sleep_for(std::chrono::milliseconds(500)))
@ -2437,6 +2440,7 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect)
}
if (!interruptNet.sleep_for(std::chrono::milliseconds(500)))
return;
PerformReconnections();
}
}
@ -2846,11 +2850,11 @@ void CConnman::ThreadOpenAddedConnections()
if (!interruptNet.sleep_for(std::chrono::milliseconds(500))) return;
grant = CSemaphoreGrant(*semAddnode, /*fTry=*/true);
}
// See if any reconnections are desired.
PerformReconnections();
// Retry every 60 seconds if a connection was attempted, otherwise two seconds
if (!interruptNet.sleep_for(std::chrono::seconds(tried ? 60 : 2)))
return;
// See if any reconnections are desired.
PerformReconnections();
}
}

7
src/net.h
View file

@ -1084,10 +1084,11 @@ public:
vWhitelistedRange = connOptions.vWhitelistedRange;
{
LOCK(m_added_nodes_mutex);
// Attempt v2 connection if we support v2 - we'll reconnect with v1 if our
// peer doesn't support it or immediately disconnects us for another reason.
const bool use_v2transport(GetLocalServices() & NODE_P2P_V2);
for (const std::string& added_node : connOptions.m_added_nodes) {
// -addnode cli arg does not currently have a way to signal BIP324 support
m_added_node_params.push_back({added_node, false});
m_added_node_params.push_back({added_node, use_v2transport});
}
}
m_onion_binds = connOptions.onion_binds;