Merge pull request #228 from blinklabs-io/feat/network-host-port

feat: add public root address/port for well-known networks

Author: agaffney

networks.go

@@ -3,9 +3,9 @@ package ouroboros
 // Network definitions
 var (
 	NetworkTestnet = Network{Id: 0, Name: "testnet", NetworkMagic: 1097911063}
-	NetworkMainnet = Network{Id: 1, Name: "mainnet", NetworkMagic: 764824073}
-	NetworkPreprod = Network{Id: 2, Name: "preprod", NetworkMagic: 1}
-	NetworkPreview = Network{Id: 3, Name: "preview", NetworkMagic: 2}
+	NetworkMainnet = Network{Id: 1, Name: "mainnet", NetworkMagic: 764824073, PublicRootAddress: "relays-new.cardano-mainnet.iohk.io", PublicRootPort: 3001}
+	NetworkPreprod = Network{Id: 2, Name: "preprod", NetworkMagic: 1, PublicRootAddress: "preprod-node.world.dev.cardano.org", PublicRootPort: 300000}
+	NetworkPreview = Network{Id: 3, Name: "preview", NetworkMagic: 2, PublicRootAddress: "preview-node.world.dev.cardano.org", PublicRootPort: 300002}
 
 	NetworkInvalid = Network{Id: 0, Name: "invalid", NetworkMagic: 0} // NetworkInvalid is used as a return value for lookup functions when a network isn't found
 )
@@ -45,9 +45,11 @@ func NetworkByNetworkMagic(networkMagic uint32) Network {
 
 // Network represents a Cardano network
 type Network struct {
-	Id           uint
-	Name         string
-	NetworkMagic uint32
+	Id                uint
+	Name              string
+	NetworkMagic      uint32
+	PublicRootAddress string
+	PublicRootPort    uint
 }
 
 func (n Network) String() string {