rpc: new RPC implementation with pub/sub support

accounts/account_manager.go

@@ -44,6 +44,10 @@ type Account struct {
 	Address common.Address
 }
 
+func (acc *Account) MarshalJSON() ([]byte, error) {
+	return []byte(`"` + acc.Address.Hex() + `"`), nil
+}
+
 type Manager struct {
 	keyStore crypto.KeyStore
 	unlocked map[common.Address]*unlocked
@@ -92,6 +96,17 @@ func (am *Manager) Unlock(addr common.Address, keyAuth string) error {
 	return am.TimedUnlock(addr, keyAuth, 0)
 }
 
+func (am *Manager) Lock(addr common.Address) error {
+	am.mutex.Lock()
+	if unl, found := am.unlocked[addr]; found {
+		am.mutex.Unlock()
+		am.expire(addr, unl, time.Duration(0) * time.Nanosecond)
+	} else {
+		am.mutex.Unlock()
+	}
+	return nil
+}
+
 // TimedUnlock unlocks the account with the given address. The account
 // stays unlocked for the duration of timeout. A timeout of 0 unlocks the account
 // until the program exits.