add signet chain and accompanying parameters

Co-authored-by: Anthony Towns <aj@erisian.com.au>

1 files changed, 11 insertions, 5 deletions

diff --git a/src/chainparamsbase.cpp b/src/chainparamsbase.cpp
index 1825ced640..1027e390ef 100644
--- a/src/chainparamsbase.cpp
+++ b/src/chainparamsbase.cpp
@@ -13,6 +13,7 @@
 
 const std::string CBaseChainParams::MAIN = "main";
 const std::string CBaseChainParams::TESTNET = "test";
+const std::string CBaseChainParams::SIGNET = "signet";
 const std::string CBaseChainParams::REGTEST = "regtest";
 
 void SetupChainParamsBaseOptions(ArgsManager& argsman)
@@ -23,6 +24,9 @@ void SetupChainParamsBaseOptions(ArgsManager& argsman)
     argsman.AddArg("-segwitheight=<n>", "Set the activation height of segwit. -1 to disable. (regtest-only)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::DEBUG_TEST);
     argsman.AddArg("-testnet", "Use the test chain. Equivalent to -chain=test.", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
     argsman.AddArg("-vbparams=deployment:start:end", "Use given start/end times for specified version bits deployment (regtest-only)", ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::CHAINPARAMS);
+    argsman.AddArg("-signet", "Use the signet chain. Note that the network is defined by the -signetchallenge parameter", ArgsManager::ALLOW_ANY, OptionsCategory::CHAINPARAMS);
+    argsman.AddArg("-signetchallenge", "Blocks must satisfy the given script to be considered valid (only for signet networks)", ArgsManager::ALLOW_STRING, OptionsCategory::CHAINPARAMS);
+    argsman.AddArg("-signetseednode", "Specify a seed node for the signet network, in the hostname[:port] format, e.g. sig.net:1234 (may be used multiple times to specify multiple seed nodes)", ArgsManager::ALLOW_STRING, OptionsCategory::CHAINPARAMS);
 }
 
 static std::unique_ptr<CBaseChainParams> globalChainBaseParams;
@@ -35,14 +39,16 @@ const CBaseChainParams& BaseParams()
 
 std::unique_ptr<CBaseChainParams> CreateBaseChainParams(const std::string& chain)
 {
-    if (chain == CBaseChainParams::MAIN)
+    if (chain == CBaseChainParams::MAIN) {
         return MakeUnique<CBaseChainParams>("", 8332);
-    else if (chain == CBaseChainParams::TESTNET)
+    } else if (chain == CBaseChainParams::TESTNET) {
         return MakeUnique<CBaseChainParams>("testnet3", 18332);
-    else if (chain == CBaseChainParams::REGTEST)
+    } else if (chain == CBaseChainParams::SIGNET) {
+        return MakeUnique<CBaseChainParams>("signet", 38332);
+    } else if (chain == CBaseChainParams::REGTEST) {
         return MakeUnique<CBaseChainParams>("regtest", 18443);
-    else
-        throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
+    }
+    throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 }
 
 void SelectBaseParams(const std::string& chain)