Add DEFAULT chain and set to liquidv1

This fixes f.e. that when arguments are set in CLI or the config file
without a network attached (`port` instead of `liquidv1.port`), they
will now be assigned to the liquidv1 instead of Bitcoin mainnet.

Author: stevenroose

src/chainparamsbase.cpp

@@ -16,6 +16,8 @@ const std::string CBaseChainParams::TESTNET = "test";
 const std::string CBaseChainParams::REGTEST = "regtest";
 const std::string CBaseChainParams::LIQUID1 = "liquidv1";
 
+const std::string CBaseChainParams::DEFAULT = CBaseChainParams::LIQUID1;
+
 void SetupChainParamsBaseOptions()
 {
     gArgs.AddArg("-chain=<chain>", "Use the chain <chain> (default: main). Reserved values: main, test, regtest", false, OptionsCategory::CHAINPARAMS);

src/chainparamsbase.h

@@ -22,6 +22,8 @@ class CBaseChainParams
     static const std::string REGTEST;
     static const std::string LIQUID1;
 
+    static const std::string DEFAULT;
+
     const std::string& DataDir() const { return strDataDir; }
     int RPCPort() const { return nRPCPort; }
     int MainchainRPCPort() const { return nMainchainRPCPort; }

src/init.cpp

@@ -363,10 +363,12 @@ void SetupServerArgs()
     SetupHelpOptions(gArgs);
     gArgs.AddArg("-help-debug", "Print help message with debugging options and exit", false, OptionsCategory::DEBUG_TEST); // server-only for now
 
-    const auto defaultBaseParams = CreateBaseChainParams(CBaseChainParams::MAIN);
+    const auto defaultBaseParams = CreateBaseChainParams(CBaseChainParams::DEFAULT);
+    const auto mainnetBaseParams = CreateBaseChainParams(CBaseChainParams::MAIN);
     const auto testnetBaseParams = CreateBaseChainParams(CBaseChainParams::TESTNET);
     const auto regtestBaseParams = CreateBaseChainParams(CBaseChainParams::REGTEST);
-    const auto defaultChainParams = CreateChainParams(CBaseChainParams::MAIN);
+    const auto defaultChainParams = CreateChainParams(CBaseChainParams::DEFAULT);
+    const auto mainnetChainParams = CreateChainParams(CBaseChainParams::MAIN);
     const auto testnetChainParams = CreateChainParams(CBaseChainParams::TESTNET);
     const auto regtestChainParams = CreateChainParams(CBaseChainParams::REGTEST);
 

src/util/system.cpp

@@ -174,7 +174,7 @@ class ArgsManagerHelper {
      *  See also comments around ArgsManager::ArgsManager() below. */
     static inline bool UseDefaultSection(const ArgsManager& am, const std::string& arg) EXCLUSIVE_LOCKS_REQUIRED(am.cs_args)
     {
-        return (am.m_network == CBaseChainParams::MAIN || am.m_network_only_args.count(arg) == 0);
+        return (am.m_network == CBaseChainParams::DEFAULT || am.m_network_only_args.count(arg) == 0);
     }
 
     /** Convert regular argument into the network-specific setting */
@@ -336,7 +336,7 @@ const std::set<std::string> ArgsManager::GetUnsuitableSectionOnlyArgs() const
     if (m_network.empty()) return std::set<std::string> {};
 
     // if it's okay to use the default section for this network, don't worry
-    if (m_network == CBaseChainParams::MAIN) return std::set<std::string> {};
+    if (m_network == CBaseChainParams::DEFAULT) return std::set<std::string> {};
 
     for (const auto& arg : m_network_only_args) {
         std::pair<bool, std::string> found_result;