From 44407100ff9b478d6131a1c38ee993b50b1830df Mon Sep 17 00:00:00 2001 From: Matt Corallo Date: Wed, 4 Oct 2017 17:59:30 -0400 Subject: Replace relevant services logic with a function suite. Adds HasAllRelevantServices and GetRelevantServices, which check for NETWORK|WITNESS. This changes the following: * Removes nRelevantServices from CConnman, disconnecting it a bit more from protocol-level logic. * Replaces our sometimes-connect-to-!WITNESS-nodes logic with simply always requiring WITNESS|NETWORK for outbound non-feeler connections (feelers still only require NETWORK). * This has the added benefit of removing nServicesExpected from CNode - instead letting net_processing's VERSION message handling simply check HasAllRelevantServices. * This implies we believe WITNESS nodes to continue to be a significant majority of nodes on the network, but also because we cannot sync properly from !WITNESS nodes, it is strange to continue using our valuable outbound slots on them. * In order to prevent this change from preventing connection to -connect= nodes which have !WITNESS, -connect nodes are now given the "addnode" flag. This also allows outbound connections to !NODE_NETWORK nodes for -connect nodes (which was already true of addnodes). * Has the (somewhat unintended) consequence of changing one of the eviction metrics from the same sometimes-connect-to-!WITNESS-nodes metric to requiring HasRelevantServices. This should make NODE_NETWORK_LIMITED much simpler to implement. --- src/init.cpp | 5 ----- 1 file changed, 5 deletions(-) (limited to 'src/init.cpp') diff --git a/src/init.cpp b/src/init.cpp index b46b53ac1..951800f6c 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -815,7 +815,6 @@ void InitLogging() namespace { // Variables internal to initialization process only -ServiceFlags nRelevantServices = NODE_NETWORK; int nMaxConnections; int nUserMaxConnections; int nFD; @@ -1604,9 +1603,6 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler) // Note that setting NODE_WITNESS is never required: the only downside from not // doing so is that after activation, no upgraded nodes will fetch from you. nLocalServices = ServiceFlags(nLocalServices | NODE_WITNESS); - // Only care about others providing witness capabilities if there is a softfork - // defined. - nRelevantServices = ServiceFlags(nRelevantServices | NODE_WITNESS); } // ********************************************************* Step 10: import blocks @@ -1656,7 +1652,6 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler) CConnman::Options connOptions; connOptions.nLocalServices = nLocalServices; - connOptions.nRelevantServices = nRelevantServices; connOptions.nMaxConnections = nMaxConnections; connOptions.nMaxOutbound = std::min(MAX_OUTBOUND_CONNECTIONS, connOptions.nMaxConnections); connOptions.nMaxAddnode = MAX_ADDNODE_CONNECTIONS; -- cgit v1.2.3 From 5ee88b4bdefecbf03b6883b2a6b56a44ec75167d Mon Sep 17 00:00:00 2001 From: Matt Corallo Date: Fri, 6 Oct 2017 17:27:04 -0400 Subject: Clarify docs for requirements/handling of addnode/connect nodes --- src/init.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/init.cpp') diff --git a/src/init.cpp b/src/init.cpp index 951800f6c..8755ad420 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -369,11 +369,11 @@ std::string HelpMessage(HelpMessageMode mode) strUsage += HelpMessageOpt("-txindex", strprintf(_("Maintain a full transaction index, used by the getrawtransaction rpc call (default: %u)"), DEFAULT_TXINDEX)); strUsage += HelpMessageGroup(_("Connection options:")); - strUsage += HelpMessageOpt("-addnode=", _("Add a node to connect to and attempt to keep the connection open")); + strUsage += HelpMessageOpt("-addnode=", _("Add a node to connect to and attempt to keep the connection open (see the `addnode` RPC command help for more info)")); strUsage += HelpMessageOpt("-banscore=", strprintf(_("Threshold for disconnecting misbehaving peers (default: %u)"), DEFAULT_BANSCORE_THRESHOLD)); strUsage += HelpMessageOpt("-bantime=", strprintf(_("Number of seconds to keep misbehaving peers from reconnecting (default: %u)"), DEFAULT_MISBEHAVING_BANTIME)); strUsage += HelpMessageOpt("-bind=", _("Bind to given address and always listen on it. Use [host]:port notation for IPv6")); - strUsage += HelpMessageOpt("-connect=", _("Connect only to the specified node(s); -connect=0 disables automatic connections")); + strUsage += HelpMessageOpt("-connect=", _("Connect only to the specified node(s); -connect=0 disables automatic connections (the rules for this peer are the same as for -addnode)")); strUsage += HelpMessageOpt("-discover", _("Discover own IP addresses (default: 1 when listening and no -externalip or -proxy)")); strUsage += HelpMessageOpt("-dns", _("Allow DNS lookups for -addnode, -seednode and -connect") + " " + strprintf(_("(default: %u)"), DEFAULT_NAME_LOOKUP)); strUsage += HelpMessageOpt("-dnsseed", _("Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect used)")); -- cgit v1.2.3