add warnings

btcd.go

@@ -64,6 +64,11 @@ func btcdMain(serverChan chan<- *server) error {
 	// Show version at startup.
 	btcdLog.Infof("Version %s", version())
 
+	if cfg.TestNet3 {
+		btcdLog.Warn("Support for testnet3 is deprecated and will be removed in an upcoming release. " +
+			"Consider switching to testnet4.")
+	}
+
 	// Enable http profiling server if requested.
 	if cfg.Profile != "" {
 		go func() {

cmd/addblock/config.go

@@ -30,7 +30,7 @@ var (
 	activeNetParams = &chaincfg.MainNetParams
 )
 
-// config defines the configuration options for findcheckpoint.
+// config defines the configuration options for addblock.
 //
 // See loadConfig for details on the configuration load process.
 type config struct {
@@ -41,7 +41,7 @@ type config struct {
 	Progress       int    `short:"p" long:"progress" description:"Show a progress message each time this number of seconds have passed -- Use 0 to disable progress announcements"`
 	RegressionTest bool   `long:"regtest" description:"Use the regression test network"`
 	SimNet         bool   `long:"simnet" description:"Use the simulation test network"`
-	TestNet3       bool   `long:"testnet" description:"Use the test network"`
+	TestNet3       bool   `long:"testnet" description:"Use the test network (version 3). Support for testnet3 is deprecated. Consider moving to testnet4 now by using -testnet4"`
 	TestNet4       bool   `long:"testnet4" description:"Use the test network (version 4)"`
 	TxIndex        bool   `long:"txindex" description:"Build a full hash-based transaction index which makes all transactions available via the getrawtransaction RPC"`
 }

cmd/btcctl/config.go

@@ -106,7 +106,7 @@ type config struct {
 	RPCUser        string `short:"u" long:"rpcuser" description:"RPC username"`
 	SimNet         bool   `long:"simnet" description:"Connect to the simulation test network"`
 	TLSSkipVerify  bool   `long:"skipverify" description:"Do not verify tls certificates (not recommended!)"`
-	TestNet3       bool   `long:"testnet" description:"Connect to testnet"`
+	TestNet3       bool   `long:"testnet" description:"Connect to testnet (version 3). Support for testnet3 is deprecated. Consider moving to testnet4 now by using -testnet4"`
 	TestNet4       bool   `long:"testnet4" description:"Connect to testnet (version 4)"`
 	SigNet         bool   `long:"signet" description:"Connect to signet"`
 	ShowVersion    bool   `short:"V" long:"version" description:"Display version information and exit"`

cmd/findcheckpoint/config.go

@@ -41,7 +41,7 @@ type config struct {
 	NumCandidates  int    `short:"n" long:"numcandidates" description:"Max num of checkpoint candidates to show {1-20}"`
 	RegressionTest bool   `long:"regtest" description:"Use the regression test network"`
 	SimNet         bool   `long:"simnet" description:"Use the simulation test network"`
-	TestNet3       bool   `long:"testnet" description:"Use the test network"`
+	TestNet3       bool   `long:"testnet" description:"Use the test network (version 3). Support for testnet3 is deprecated. Consider moving to testnet4 now by using -testnet4"`
 	TestNet4       bool   `long:"testnet4" description:"Use the test network (version 4)"`
 }
 

config.go

@@ -169,7 +169,7 @@ type config struct {
 	SigNet               bool          `long:"signet" description:"Use the signet test network"`
 	SigNetChallenge      string        `long:"signetchallenge" description:"Connect to a custom signet network defined by this challenge instead of using the global default signet test network -- Can be specified multiple times"`
 	SigNetSeedNode       []string      `long:"signetseednode" description:"Specify a seed node for the signet network instead of using the global default signet network seed nodes"`
-	TestNet3             bool          `long:"testnet" description:"Use the test network"`
+	TestNet3             bool          `long:"testnet" description:"Use the test network (version 3). Support for testnet3 is deprecated. Consider moving to testnet4 now by using -testnet4"`
 	TestNet4             bool          `long:"testnet4" description:"Use the test network (version 4)"`
 	TorIsolation         bool          `long:"torisolation" description:"Enable Tor stream isolation by randomizing user credentials for each connection."`
 	TrickleInterval      time.Duration `long:"trickleinterval" description:"Minimum time between attempts to send new inventory to a connected peer"`