func main() {
// Only override the handlers for notifications you care about.
// Also note most of these handlers will only be called if you register
// for notifications. See the documentation of the btcrpcclient
// NotificationHandlers type for more details about each handler.
ntfnHandlers := btcrpcclient.NotificationHandlers{
OnBlockConnected: func(hash *btcwire.ShaHash, height int32) {
log.Printf("Block connected: %v (%d)", hash, height)
},
OnBlockDisconnected: func(hash *btcwire.ShaHash, height int32) {
log.Printf("Block disconnected: %v (%d)", hash, height)
},
}
// Connect to local btcd RPC server using websockets.
btcdHomeDir := btcutil.AppDataDir("btcd", false)
certs, err := ioutil.ReadFile(filepath.Join(btcdHomeDir, "rpc.cert"))
if err != nil {
log.Fatal(err)
}
connCfg := &btcrpcclient.ConnConfig{
Host: "localhost:8334",
Endpoint: "ws",
User: "******",
Pass: "******",
Certificates: certs,
}
client, err := btcrpcclient.New(connCfg, &ntfnHandlers)
if err != nil {
log.Fatal(err)
}
// Register for block connect and disconnect notifications.
if err := client.NotifyBlocks(); err != nil {
log.Fatal(err)
}
log.Println("NotifyBlocks: Registration Complete")
// Get the current block count.
blockCount, err := client.GetBlockCount()
if err != nil {
log.Fatal(err)
}
log.Printf("Block count: %d", blockCount)
// For this example gracefully shutdown the client after 10 seconds.
// Ordinarily when to shutdown the client is highly application
// specific.
log.Println("Client shutdown in 10 seconds...")
time.AfterFunc(time.Second*10, func() {
log.Println("Client shutting down...")
client.Shutdown()
log.Println("Client shutdown complete.")
})
// Wait until the client either shuts down gracefully (or the user
// terminates the process with Ctrl+C).
client.WaitForShutdown()
}
func main() {
// Only override the handlers for notifications you care about.
// Also note most of the handlers will only be called if you register
// for notifications. See the documentation of the btcrpcclient
// NotificationHandlers type for more details about each handler.
ntfnHandlers := btcrpcclient.NotificationHandlers{
OnAccountBalance: func(account string, balance btcutil.Amount, confirmed bool) {
log.Printf("New balance for account %s: %v", account,
balance)
},
}
// Connect to local btcwallet RPC server using websockets.
certHomeDir := btcutil.AppDataDir("btcwallet", false)
certs, err := ioutil.ReadFile(filepath.Join(certHomeDir, "rpc.cert"))
if err != nil {
log.Fatal(err)
}
connCfg := &btcrpcclient.ConnConfig{
Host: "localhost:18332",
Endpoint: "ws",
User: "******",
Pass: "******",
Certificates: certs,
}
client, err := btcrpcclient.New(connCfg, &ntfnHandlers)
if err != nil {
log.Fatal(err)
}
// Get the list of unspent transaction outputs (utxos) that the
// connected wallet has at least one private key for.
unspent, err := client.ListUnspent()
if err != nil {
log.Fatal(err)
}
log.Printf("Num unspent outputs (utxos): %d", len(unspent))
if len(unspent) > 0 {
log.Printf("First utxo:\n%v", spew.Sdump(unspent[0]))
}
// For this example gracefully shutdown the client after 10 seconds.
// Ordinarily when to shutdown the client is highly application
// specific.
log.Println("Client shutdown in 10 seconds...")
time.AfterFunc(time.Second*10, func() {
log.Println("Client shutting down...")
client.Shutdown()
log.Println("Client shutdown complete.")
})
// Wait until the client either shuts down gracefully (or the user
// terminates the process with Ctrl+C).
client.WaitForShutdown()
}
func main() {
var err error
cfg, _, err = loadConfig()
if err != nil {
fmt.Fprintf(os.Stderr, "loadConfig failed: %v\n", err)
os.Exit(-1)
}
listeners := make([]net.Listener, 0, len(cfg.Listeners))
for _, addr := range cfg.Listeners {
listener, err := net.Listen("tcp", addr)
if err != nil {
fmt.Fprintf(os.Stderr, "Listen failed: %v\n", err)
os.Exit(-1)
}
listeners = append(listeners, listener)
}
cert, err := ioutil.ReadFile(cfg.RPCCert)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to load certificate: %v\n", err)
os.Exit(-1)
}
rpccfg := btcrpcclient.ConnConfig{
Host: cfg.RPCServer,
Endpoint: "ws",
User: cfg.RPCUser,
Pass: cfg.RPCPassword,
Certificates: cert,
}
client, err = btcrpcclient.New(&rpccfg, nil)
if err != nil {
fmt.Fprintf(os.Stderr, "New RPC Client failed: %v\n", err)
os.Exit(-1)
}
http.HandleFunc("/", handleRequest)
httpServeMux := http.NewServeMux()
httpServer := &http.Server{Handler: httpServeMux}
httpServeMux.HandleFunc("/", handleRequest)
var wg sync.WaitGroup
for _, listener := range listeners {
wg.Add(1)
go func(listener net.Listener) {
fmt.Fprintf(os.Stderr, "HTTP server listening on %s\n", listener.Addr())
httpServer.Serve(listener)
wg.Done()
}(listener)
}
wg.Wait()
}
func makeRpcClient(connCfg *btcrpcclient.ConnConfig) (*btcrpcclient.Client, error) {
client, err := btcrpcclient.New(connCfg, nil)
if err != nil {
return nil, err
}
err = checkconnection(client)
if err != nil {
return nil, err
}
return client, nil
}
func btcRpcClient() (*btcrpcclient.Client, error) {
cfg := &btcrpcclient.ConnConfig{
Host: BtcRpcHost,
User: "******",
Pass: "******",
DisableTLS: true,
HttpPostMode: true,
}
client, err := btcrpcclient.New(cfg, nil)
if err != nil {
log.Println(err)
}
return client, err
}
func main() {
flag.Parse()
ntfnHandlers := btcrpcclient.NotificationHandlers{
OnTxAccepted: func(hash *btcwire.ShaHash, amount btcutil.Amount) {
h.broadcast <- []byte(strconv.FormatFloat(amount.ToUnit(0), 'f', -1, 64))
log.Printf("Tx Accepted: %v (%s)", hash, amount.String())
},
}
var certFile string
if *rpcCert != "" {
certFile = *rpcCert
} else {
btcdHomeDir := btcutil.AppDataDir("btcd", false)
filepath.Join(btcdHomeDir, "rpc.cert")
certFile = filepath.Join(btcdHomeDir, "rpc.cert")
}
certs, _ := ioutil.ReadFile(certFile)
connCfg := &btcrpcclient.ConnConfig{
Host: *rpcHost,
Endpoint: "ws",
User: *rpcUser,
Pass: *rpcPass,
Certificates: certs,
}
// Connect to btcd server
client, err := btcrpcclient.New(connCfg, &ntfnHandlers)
if err != nil {
log.Fatal(err)
}
client.NotifyNewTransactions(false)
// Start Websocket server
go h.run()
http.HandleFunc("/", serveWs)
err = http.ListenAndServe(*address, nil)
if err != nil {
log.Fatal("Error starting http listener: ", err)
}
}
func newRPCClient(certs []byte) (*rpcClient, error) {
client := rpcClient{
enqueueNotification: make(chan notification),
dequeueNotification: make(chan notification),
quit: make(chan struct{}),
}
initializedClient := make(chan struct{})
ntfnCallbacks := btcrpcclient.NotificationHandlers{
OnClientConnected: func() {
log.Info("Established connection to btcd")
<-initializedClient
// nil client to broadcast to all connected clients
server.NotifyConnectionStatus(nil)
err := client.Handshake()
if err != nil {
log.Errorf("Cannot complete handshake: %v", err)
client.Stop()
}
},
OnBlockConnected: client.onBlockConnected,
OnBlockDisconnected: client.onBlockDisconnected,
OnRecvTx: client.onRecvTx,
OnRedeemingTx: client.onRedeemingTx,
OnRescanFinished: client.onRescanFinished,
OnRescanProgress: client.onRescanProgress,
}
conf := btcrpcclient.ConnConfig{
Host: cfg.RPCConnect,
Endpoint: "ws",
User: cfg.BtcdUsername,
Pass: cfg.BtcdPassword,
Certificates: certs,
}
c, err := btcrpcclient.New(&conf, &ntfnCallbacks)
if err != nil {
return nil, err
}
client.Client = c
close(initializedClient)
return &client, nil
}
func main() {
// Connect to local bitcoin core RPC server using HTTP POST mode.
connCfg := &btcrpcclient.ConnConfig{
Host: "localhost:8332",
User: "******",
Pass: "******",
HttpPostMode: true, // Bitcoin core only supports HTTP POST mode
DisableTLS: true, // Bitcoin core does not provide TLS by default
}
// Notice the notification parameter is nil since notifications are
// not supported in HTTP POST mode.
client, err := btcrpcclient.New(connCfg, nil)
if err != nil {
log.Fatal(err)
}
defer client.Shutdown()
// Get the current block count.
blockCount, err := client.GetBlockCount()
if err != nil {
log.Fatal(err)
}
log.Printf("Block count: %d", blockCount)
}