feat: support typed errors over RPC

node/impl/full/gas.go

@@ -290,6 +290,10 @@ func gasEstimateGasLimit(
 	if err != nil {
 		return -1, xerrors.Errorf("CallWithGas failed: %w", err)
 	}
+	if res.MsgRct.ExitCode == exitcode.SysErrOutOfGas {
+		return -1, api.ErrOutOfGas{}
+	}
+
 	if res.MsgRct.ExitCode != exitcode.Ok {
 		return -1, xerrors.Errorf("message execution failed: exit %s, reason: %s", res.MsgRct.ExitCode, res.Error)
 	}
@@ -356,7 +360,7 @@ func (m *GasModule) GasEstimateMessageGas(ctx context.Context, msg *types.Messag
 	if msg.GasLimit == 0 {
 		gasLimit, err := m.GasEstimateGasLimit(ctx, msg, types.EmptyTSK)
 		if err != nil {
-			return nil, xerrors.Errorf("estimating gas used: %w", err)
+			return nil, err
 		}
 		msg.GasLimit = int64(float64(gasLimit) * m.Mpool.GetConfig().GasLimitOverestimation)
 	}

node/impl/full/state.go

@@ -482,7 +482,12 @@ func (m *StateModule) StateLookupID(ctx context.Context, addr address.Address, t
 		return address.Undef, xerrors.Errorf("loading tipset %s: %w", tsk, err)
 	}
 
-	return m.StateManager.LookupID(ctx, addr, ts)
+	ret, err := m.StateManager.LookupID(ctx, addr, ts)
+	if err != nil && xerrors.Is(err, types.ErrActorNotFound) {
+		return address.Undef, api.ErrActorNotFound{}
+	}
+
+	return ret, err
 }
 
 func (a *StateAPI) StateLookupRobustAddress(ctx context.Context, addr address.Address, tsk types.TipSetKey) (address.Address, error) {

node/rpc.go

@@ -69,7 +69,7 @@ func FullNodeHandler(a v1api.FullNode, permissioned bool, opts ...jsonrpc.Server
 	m := mux.NewRouter()
 
 	serveRpc := func(path string, hnd interface{}) {
-		rpcServer := jsonrpc.NewServer(opts...)
+		rpcServer := jsonrpc.NewServer(append(opts, jsonrpc.WithServerErrors(api.RPCErrors))...)
 		rpcServer.Register("Filecoin", hnd)
 		rpcServer.AliasMethod("rpc.discover", "Filecoin.Discover")
 
@@ -130,7 +130,7 @@ func MinerHandler(a api.StorageMiner, permissioned bool) (http.Handler, error) {
 	}
 
 	readerHandler, readerServerOpt := rpcenc.ReaderParamDecoder()
-	rpcServer := jsonrpc.NewServer(readerServerOpt)
+	rpcServer := jsonrpc.NewServer(jsonrpc.WithServerErrors(api.RPCErrors), readerServerOpt)
 	rpcServer.Register("Filecoin", mapi)
 	rpcServer.AliasMethod("rpc.discover", "Filecoin.Discover")