merge

12 files changed, 275 insertions, 178 deletions

diff --git a/cmd/ethereum/main.go b/cmd/ethereum/main.go
index 181d6d60d..afaf06948 100644
--- a/cmd/ethereum/main.go
+++ b/cmd/ethereum/main.go
@@ -42,7 +42,7 @@ import (
 
 const (
 	ClientIdentifier = "Ethereum(G)"
-	Version          = "Frontier - 0.9.1"
+	Version          = "0.9.1"
 )
 
 var (
diff --git a/core/block_processor.go b/core/block_processor.go
index b12f88c47..99c5fea05 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -16,10 +16,6 @@ import (
 	"gopkg.in/fatih/set.v0"
 )
 
-type PendingBlockEvent struct {
-	Block *types.Block
-}
-
 var statelogger = logger.NewLogger("BLOCK")
 
 type BlockProcessor struct {
@@ -137,7 +133,7 @@ func (self *BlockProcessor) ApplyTransactions(coinbase *state.StateObject, state
 	block.Header().GasUsed = totalUsedGas
 
 	if transientProcess {
-		go self.eventMux.Post(PendingBlockEvent{block})
+		go self.eventMux.Post(PendingBlockEvent{block, statedb.Logs()})
 	}
 
 	return receipts, handled, unhandled, erroneous, err
@@ -146,25 +142,25 @@ func (self *BlockProcessor) ApplyTransactions(coinbase *state.StateObject, state
 // Process block will attempt to process the given block's transactions and applies them
 // on top of the block's parent state (given it exists) and will return wether it was
 // successful or not.
-func (sm *BlockProcessor) Process(block *types.Block) (td *big.Int, err error) {
+func (sm *BlockProcessor) Process(block *types.Block) (td *big.Int, logs state.Logs, err error) {
 	// Processing a blocks may never happen simultaneously
 	sm.mutex.Lock()
 	defer sm.mutex.Unlock()
 
 	header := block.Header()
 	if sm.bc.HasBlock(header.Hash()) {
-		return nil, &KnownBlockError{header.Number, header.Hash()}
+		return nil, nil, &KnownBlockError{header.Number, header.Hash()}
 	}
 
 	if !sm.bc.HasBlock(header.ParentHash) {
-		return nil, ParentError(header.ParentHash)
+		return nil, nil, ParentError(header.ParentHash)
 	}
 	parent := sm.bc.GetBlock(header.ParentHash)
 
 	return sm.processWithParent(block, parent)
 }
 
-func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (td *big.Int, err error) {
+func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (td *big.Int, logs state.Logs, err error) {
 	sm.lastAttemptedBlock = block
 
 	// Create a new state based on the parent's root (e.g., create copy)
@@ -177,7 +173,7 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (td *big
 
 	// There can be at most two uncles
 	if len(block.Uncles()) > 2 {
-		return nil, ValidationError("Block can only contain one uncle (contained %v)", len(block.Uncles()))
+		return nil, nil, ValidationError("Block can only contain one uncle (contained %v)", len(block.Uncles()))
 	}
 
 	receipts, err := sm.TransitionState(state, parent, block, false)
@@ -236,7 +232,7 @@ func (sm *BlockProcessor) processWithParent(block, parent *types.Block) (td *big
 
 	chainlogger.Infof("processed block #%d (%x...)\n", header.Number, block.Hash().Bytes()[0:4])
 
-	return td, nil
+	return td, state.Logs(), nil
 }
 
 // Validates the current block. Returns an error if the block was invalid,
diff --git a/core/chain_makers.go b/core/chain_makers.go
index 857af960c..e3001331c 100644
--- a/core/chain_makers.go
+++ b/core/chain_makers.go
@@ -93,7 +93,7 @@ func makeChain(bman *BlockProcessor, parent *types.Block, max int, db common.Dat
 	blocks := make(types.Blocks, max)
 	for i := 0; i < max; i++ {
 		block := makeBlock(bman, parent, i, db, seed)
-		td, err := bman.processWithParent(block, parent)
+		td, _, err := bman.processWithParent(block, parent)
 		if err != nil {
 			fmt.Println("process with parent failed", err)
 			panic(err)
diff --git a/core/chain_manager.go b/core/chain_manager.go
index 4bf9e9aed..ff37ea28a 100644
--- a/core/chain_manager.go
+++ b/core/chain_manager.go
@@ -410,7 +410,7 @@ func (self *ChainManager) InsertChain(chain types.Blocks) error {
 	for i, block := range chain {
 		// Call in to the block processor and check for errors. It's likely that if one block fails
 		// all others will fail too (unless a known block is returned).
-		td, err := self.processor.Process(block)
+		td, logs, err := self.processor.Process(block)
 		if err != nil {
 			if IsKnownBlockErr(err) {
 				continue
@@ -438,29 +438,27 @@ func (self *ChainManager) InsertChain(chain types.Blocks) error {
 					hash := block.Hash()
 					chainlogger.Infof("Split detected. New head #%v (%x) TD=%v, was #%v (%x) TD=%v\n", block.Header().Number, hash[:4], td, cblock.Header().Number, chash[:4], self.td)
 
-					queue[i] = ChainSplitEvent{block}
+					queue[i] = ChainSplitEvent{block, logs}
 					queueEvent.splitCount++
 				}
 
 				self.setTotalDifficulty(td)
 				self.insert(block)
 
-				/* XXX crashes
 				jsonlogger.LogJson(&logger.EthChainNewHead{
-					BlockHash:     common.Bytes2Hex(block.Hash()),
+					BlockHash:     block.Hash().Hex(),
 					BlockNumber:   block.Number(),
-					ChainHeadHash: common.Bytes2Hex(cblock.Hash()),
-					BlockPrevHash: common.Bytes2Hex(block.ParentHash()),
+					ChainHeadHash: cblock.Hash().Hex(),
+					BlockPrevHash: block.ParentHash().Hex(),
 				})
-				*/
 
 				self.setTransState(state.New(block.Root(), self.stateDb))
 				self.setTxState(state.New(block.Root(), self.stateDb))
 
-				queue[i] = ChainEvent{block}
+				queue[i] = ChainEvent{block, logs}
 				queueEvent.canonicalCount++
 			} else {
-				queue[i] = ChainSideEvent{block}
+				queue[i] = ChainSideEvent{block, logs}
 				queueEvent.sideCount++
 			}
 		}
diff --git a/core/events.go b/core/events.go
index 23678ef60..8c5fb592a 100644
--- a/core/events.go
+++ b/core/events.go
@@ -1,6 +1,9 @@
 package core
 
-import "github.com/ethereum/go-ethereum/core/types"
+import (
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/state"
+)
 
 // TxPreEvent is posted when a transaction enters the transaction pool.
 type TxPreEvent struct{ Tx *types.Transaction }
@@ -15,11 +18,25 @@ type NewBlockEvent struct{ Block *types.Block }
 type NewMinedBlockEvent struct{ Block *types.Block }
 
 // ChainSplit is posted when a new head is detected
-type ChainSplitEvent struct{ Block *types.Block }
-
-type ChainEvent struct{ Block *types.Block }
-
-type ChainSideEvent struct{ Block *types.Block }
+type ChainSplitEvent struct {
+	Block *types.Block
+	Logs  state.Logs
+}
+
+type ChainEvent struct {
+	Block *types.Block
+	Logs  state.Logs
+}
+
+type ChainSideEvent struct {
+	Block *types.Block
+	Logs  state.Logs
+}
+
+type PendingBlockEvent struct {
+	Block *types.Block
+	Logs  state.Logs
+}
 
 type ChainHeadEvent struct{ Block *types.Block }
 
diff --git a/core/filter.go b/core/filter.go
index e08aac120..f1627636f 100644
--- a/core/filter.go
+++ b/core/filter.go
@@ -33,8 +33,8 @@ type Filter struct {
 	max      int
 	topics   [][]common.Hash
 
-	BlockCallback   func(*types.Block)
-	PendingCallback func(*types.Block)
+	BlockCallback   func(*types.Block, state.Logs)
+	PendingCallback func(*types.Block, state.Logs)
 	LogsCallback    func(state.Logs)
 }
 
diff --git a/core/types/common.go b/core/types/common.go
index ace9c2c4b..4e885c4c6 100644
--- a/core/types/common.go
+++ b/core/types/common.go
@@ -1,14 +1,16 @@
 package types
 
 import (
-	"fmt"
 	"math/big"
 
+	"github.com/ethereum/go-ethereum/state"
 	"github.com/ethereum/go-ethereum/common"
+
+	"fmt"
 )
 
 type BlockProcessor interface {
-	Process(*Block) (*big.Int, error)
+	Process(*Block) (*big.Int, state.Logs, error)
 }
 
 const bloomLength = 256
diff --git a/event/filter/eth_filter.go b/event/filter/eth_filter.go
index 4ba66a7e0..cb75d7e1a 100644
--- a/event/filter/eth_filter.go
+++ b/event/filter/eth_filter.go
@@ -63,7 +63,7 @@ func (self *FilterManager) filterLoop() {
 	// Subscribe to events
 	events := self.eventMux.Subscribe(
 		core.PendingBlockEvent{},
-		//core.ChainEvent{},
+		core.ChainEvent{},
 		state.Logs(nil))
 
 out:
@@ -77,7 +77,7 @@ out:
 				self.filterMu.RLock()
 				for _, filter := range self.filters {
 					if filter.BlockCallback != nil {
-						filter.BlockCallback(event.Block)
+						filter.BlockCallback(event.Block, event.Logs)
 					}
 				}
 				self.filterMu.RUnlock()
@@ -86,7 +86,7 @@ out:
 				self.filterMu.RLock()
 				for _, filter := range self.filters {
 					if filter.PendingCallback != nil {
-						filter.PendingCallback(event.Block)
+						filter.PendingCallback(event.Block, event.Logs)
 					}
 				}
 				self.filterMu.RUnlock()
diff --git a/rpc/api.go b/rpc/api.go
index 486eec008..02c640661 100644
--- a/rpc/api.go
+++ b/rpc/api.go
@@ -86,7 +86,7 @@ func (self *EthereumApi) getStateWithNum(num int64) *xeth.State {
 }
 
 func (self *EthereumApi) start() {
-	timer := time.NewTicker(filterTickerTime)
+	timer := time.NewTicker(2 * time.Second)
 done:
 	for {
 		select {
@@ -94,20 +94,20 @@ done:
 			self.logMut.Lock()
 			self.messagesMut.Lock()
 			for id, filter := range self.logs {
-				if time.Since(filter.timeout) > 20*time.Second {
+				if time.Since(filter.timeout) > filterTickerTime {
 					self.filterManager.UninstallFilter(id)
 					delete(self.logs, id)
 				}
 			}
 
 			for id, filter := range self.messages {
-				if time.Since(filter.timeout) > 20*time.Second {
+				if time.Since(filter.timeout) > filterTickerTime {
 					self.xeth().Whisper().Unwatch(id)
 					delete(self.messages, id)
 				}
 			}
-			self.logMut.Unlock()
 			self.messagesMut.Unlock()
+			self.logMut.Unlock()
 		case <-self.quit:
 			break done
 		}
@@ -161,7 +161,7 @@ func (self *EthereumApi) NewFilter(args *FilterOptions, reply *interface{}) erro
 	id = self.filterManager.InstallFilter(filter)
 	self.logs[id] = &logFilter{timeout: time.Now()}
 
-	*reply = i2hex(id)
+	*reply = common.ToHex(big.NewInt(int64(id)).Bytes())
 
 	return nil
 }
@@ -180,10 +180,13 @@ func (self *EthereumApi) NewFilterString(args *FilterStringArgs, reply *interfac
 	var id int
 	filter := core.NewFilter(self.xeth().Backend())
 
-	callback := func(block *types.Block) {
+	callback := func(block *types.Block, logs state.Logs) {
 		self.logMut.Lock()
 		defer self.logMut.Unlock()
 
+		for _, log := range logs {
+			self.logs[id].add(log)
+		}
 		self.logs[id].add(&state.StateLog{})
 	}
 
@@ -198,7 +201,7 @@ func (self *EthereumApi) NewFilterString(args *FilterStringArgs, reply *interfac
 
 	id = self.filterManager.InstallFilter(filter)
 	self.logs[id] = &logFilter{timeout: time.Now()}
-	*reply = i2hex(id)
+	*reply = common.ToHex(big.NewInt(int64(id)).Bytes())
 
 	return nil
 }
@@ -257,6 +260,11 @@ func (p *EthereumApi) Transact(args *NewTxArgs, reply *interface{}) (err error)
 			p.register[ags.From] = append(p.register[args.From], args)
 		}
 	*/
+
+	if err := args.requirements(); err != nil {
+		return err
+	}
+
 	// TODO: align default values to have the same type, e.g. not depend on
 	// common.Value conversions later on
 	if args.Gas.Cmp(big.NewInt(0)) == 0 {
@@ -478,7 +486,7 @@ func (p *EthereumApi) GetBlockUncleCountByNumber(blocknum int64) (int64, error)
 
 func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error {
 	// Spec at https://github.com/ethereum/wiki/wiki/Generic-JSON-RPC
-	rpclogger.Debugf("%s %s", req.Method, req.Params)
+	rpclogger.Infof("%s %s", req.Method, req.Params)
 	switch req.Method {
 	case "web3_sha3":
 		args := new(Sha3Args)
diff --git a/rpc/args.go b/rpc/args.go
index fee44c4e0..ab1c40585 100644
--- a/rpc/args.go
+++ b/rpc/args.go
@@ -8,10 +8,18 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 )
 
-func blockNumber(raw json.RawMessage, number *int64) (err error) {
-	var str string
-	if err = json.Unmarshal(raw, &str); err != nil {
-		return NewDecodeParamError(err.Error())
+func blockAge(raw interface{}, number *int64) (err error) {
+	// Parse as integer
+	num, ok := raw.(float64)
+	if ok {
+		*number = int64(num)
+		return nil
+	}
+
+	// Parse as string/hexstring
+	str, ok := raw.(string)
+	if !ok {
+		return NewDecodeParamError("BlockNumber is not a string")
 	}
 
 	switch str {
@@ -22,6 +30,7 @@ func blockNumber(raw json.RawMessage, number *int64) (err error) {
 	default:
 		*number = common.String2Big(str).Int64()
 	}
+
 	return nil
 }
 
@@ -95,18 +104,51 @@ type NewTxArgs struct {
 }
 
 func (args *NewTxArgs) UnmarshalJSON(b []byte) (err error) {
-	var obj struct{ From, To, Value, Gas, GasPrice, Data string }
-	if err = UnmarshalRawMessages(b, &obj, &args.BlockNumber); err != nil {
-		return err
+	var obj []json.RawMessage
+	var ext struct{ From, To, Value, Gas, GasPrice, Data string }
+
+	// Decode byte slice to array of RawMessages
+	if err := json.Unmarshal(b, &obj); err != nil {
+		return NewDecodeParamError(err.Error())
+	}
+
+	// Check for sufficient params
+	if len(obj) < 1 {
+		return NewInsufficientParamsError(len(obj), 1)
+	}
+
+	// Decode 0th RawMessage to temporary struct
+	if err := json.Unmarshal(obj[0], &ext); err != nil {
+		return NewDecodeParamError(err.Error())
+	}
+
+	// var ok bool
+	args.From = ext.From
+	args.To = ext.To
+	args.Value = common.String2Big(ext.Value)
+	args.Gas = common.String2Big(ext.Gas)
+	args.GasPrice = common.String2Big(ext.GasPrice)
+	args.Data = ext.Data
+
+	// Check for optional BlockNumber param
+	if len(obj) > 1 {
+		var raw interface{}
+		if err = json.Unmarshal(obj[1], &raw); err != nil {
+			return NewDecodeParamError(err.Error())
+		}
+
+		if err := blockAge(raw, &args.BlockNumber); err != nil {
+			return err
+		}
 	}
 
-	args.From = obj.From
-	args.To = obj.To
-	args.Value = common.Big(obj.Value)
-	args.Gas = common.Big(obj.Gas)
-	args.GasPrice = common.Big(obj.GasPrice)
-	args.Data = obj.Data
+	return nil
+}
 
+func (args *NewTxArgs) requirements() error {
+	if len(args.From) == 0 {
+		return NewValidationError("From", "Is required")
+	}
 	return nil
 }
 
@@ -116,10 +158,27 @@ type GetStorageArgs struct {
 }
 
 func (args *GetStorageArgs) UnmarshalJSON(b []byte) (err error) {
-	if err = UnmarshalRawMessages(b, &args.Address, &args.BlockNumber); err != nil {
+	var obj []interface{}
+	if err := json.Unmarshal(b, &obj); err != nil {
 		return NewDecodeParamError(err.Error())
 	}
 
+	if len(obj) < 1 {
+		return NewInsufficientParamsError(len(obj), 1)
+	}
+
+	addstr, ok := obj[0].(string)
+	if !ok {
+		return NewDecodeParamError("Address is not a string")
+	}
+	args.Address = addstr
+
+	if len(obj) > 1 {
+		if err := blockAge(obj[1], &args.BlockNumber); err != nil {
+			return err
+		}
+	}
+
 	return nil
 }
 
@@ -137,16 +196,32 @@ type GetStorageAtArgs struct {
 }
 
 func (args *GetStorageAtArgs) UnmarshalJSON(b []byte) (err error) {
-	var obj []string
-	if err = UnmarshalRawMessages(b, &obj, &args.BlockNumber); err != nil {
+	var obj []interface{}
+	if err := json.Unmarshal(b, &obj); err != nil {
 		return NewDecodeParamError(err.Error())
 	}
+
 	if len(obj) < 2 {
 		return NewInsufficientParamsError(len(obj), 2)
 	}
 
-	args.Address = obj[0]
-	args.Key = obj[1]
+	addstr, ok := obj[0].(string)
+	if !ok {
+		return NewDecodeParamError("Address is not a string")
+	}
+	args.Address = addstr
+
+	keystr, ok := obj[1].(string)
+	if !ok {
+		return NewDecodeParamError("Key is not a string")
+	}
+	args.Key = keystr
+
+	if len(obj) > 2 {
+		if err := blockAge(obj[2], &args.BlockNumber); err != nil {
+			return err
+		}
+	}
 
 	return nil
 }
@@ -168,10 +243,27 @@ type GetTxCountArgs struct {
 }
 
 func (args *GetTxCountArgs) UnmarshalJSON(b []byte) (err error) {
-	if err = UnmarshalRawMessages(b, &args.Address, &args.BlockNumber); err != nil {
+	var obj []interface{}
+	if err := json.Unmarshal(b, &obj); err != nil {
 		return NewDecodeParamError(err.Error())
 	}
 
+	if len(obj) < 1 {
+		return NewInsufficientParamsError(len(obj), 1)
+	}
+
+	addstr, ok := obj[0].(string)
+	if !ok {
+		return NewDecodeParamError("Address is not a string")
+	}
+	args.Address = addstr
+
+	if len(obj) > 1 {
+		if err := blockAge(obj[1], &args.BlockNumber); err != nil {
+			return err
+		}
+	}
+
 	return nil
 }
 
@@ -189,8 +281,7 @@ type GetBalanceArgs struct {
 
 func (args *GetBalanceArgs) UnmarshalJSON(b []byte) (err error) {
 	var obj []interface{}
-	r := bytes.NewReader(b)
-	if err := json.NewDecoder(r).Decode(&obj); err != nil {
+	if err := json.Unmarshal(b, &obj); err != nil {
 		return NewDecodeParamError(err.Error())
 	}
 
@@ -205,17 +296,11 @@ func (args *GetBalanceArgs) UnmarshalJSON(b []byte) (err error) {
 	args.Address = addstr
 
 	if len(obj) > 1 {
-		if obj[1].(string) == "latest" {
-			args.BlockNumber = -1
-		} else {
-			args.BlockNumber = common.Big(obj[1].(string)).Int64()
+		if err := blockAge(obj[1], &args.BlockNumber); err != nil {
+			return err
 		}
 	}
 
-	// if err = UnmarshalRawMessages(b, &args.Address, &args.BlockNumber); err != nil {
-	// 	return NewDecodeParamError(err.Error())
-	// }
-
 	return nil
 }
 
@@ -232,10 +317,27 @@ type GetDataArgs struct {
 }
 
 func (args *GetDataArgs) UnmarshalJSON(b []byte) (err error) {
-	if err = UnmarshalRawMessages(b, &args.Address, &args.BlockNumber); err != nil {
+	var obj []interface{}
+	if err := json.Unmarshal(b, &obj); err != nil {
 		return NewDecodeParamError(err.Error())
 	}
 
+	if len(obj) < 1 {
+		return NewInsufficientParamsError(len(obj), 1)
+	}
+
+	addstr, ok := obj[0].(string)
+	if !ok {
+		return NewDecodeParamError("Address is not a string")
+	}
+	args.Address = addstr
+
+	if len(obj) > 1 {
+		if err := blockAge(obj[1], &args.BlockNumber); err != nil {
+			return err
+		}
+	}
+
 	return nil
 }
 
@@ -392,10 +494,6 @@ func (args *FilterOptions) UnmarshalJSON(b []byte) (err error) {
 	return nil
 }
 
-// type FilterChangedArgs struct {
-// 	n int
-// }
-
 type DbArgs struct {
 	Database string
 	Key      string
@@ -578,31 +676,3 @@ func (args *WhisperFilterArgs) UnmarshalJSON(b []byte) (err error) {
 
 	return nil
 }
-
-// func (req *RpcRequest) ToRegisterArgs() (string, error) {
-// 	if len(req.Params) < 1 {
-// 		return "", errArguments
-// 	}
-
-// 	var args string
-// 	err := json.Unmarshal(req.Params, &args)
-// 	if err != nil {
-// 		return "", err
-// 	}
-
-// 	return args, nil
-// }
-
-// func (req *RpcRequest) ToWatchTxArgs() (string, error) {
-// 	if len(req.Params) < 1 {
-// 		return "", errArguments
-// 	}
-
-// 	var args string
-// 	err := json.Unmarshal(req.Params, &args)
-// 	if err != nil {
-// 		return "", err
-// 	}
-
-// 	return args, nil
-// }
diff --git a/rpc/args_test.go b/rpc/args_test.go
index 61b9dad25..0d8dc4085 100644
--- a/rpc/args_test.go
+++ b/rpc/args_test.go
@@ -43,6 +43,30 @@ func TestGetBalanceArgs(t *testing.T) {
 	}
 }
 
+func TestGetBalanceArgsLatest(t *testing.T) {
+	input := `["0x407d73d8a49eeb85d32cf465507dd71d507100c1", "latest"]`
+	expected := new(GetBalanceArgs)
+	expected.Address = "0x407d73d8a49eeb85d32cf465507dd71d507100c1"
+	expected.BlockNumber = -1
+
+	args := new(GetBalanceArgs)
+	if err := json.Unmarshal([]byte(input), &args); err != nil {
+		t.Error(err)
+	}
+
+	if err := args.requirements(); err != nil {
+		t.Error(err)
+	}
+
+	if args.Address != expected.Address {
+		t.Errorf("Address should be %v but is %v", expected.Address, args.Address)
+	}
+
+	if args.BlockNumber != expected.BlockNumber {
+		t.Errorf("BlockNumber should be %v but is %v", expected.BlockNumber, args.BlockNumber)
+	}
+}
+
 func TestGetBalanceEmptyArgs(t *testing.T) {
 	input := `[]`
 
@@ -120,7 +144,8 @@ func TestNewTxArgs(t *testing.T) {
   "gas": "0x76c0",
   "gasPrice": "0x9184e72a000",
   "value": "0x9184e72a000",
-  "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}]`
+  "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"},
+  "0x10"]`
 	expected := new(NewTxArgs)
 	expected.From = "0xb60e8dd61c5d32be8058bb8eb970870f07233155"
 	expected.To = "0xd46e8dd67c5d32be8058bb8eb970870f072445675"
@@ -128,6 +153,7 @@ func TestNewTxArgs(t *testing.T) {
 	expected.GasPrice = big.NewInt(10000000000000)
 	expected.Value = big.NewInt(10000000000000)
 	expected.Data = "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
+	expected.BlockNumber = big.NewInt(16).Int64()
 
 	args := new(NewTxArgs)
 	if err := json.Unmarshal([]byte(input), &args); err != nil {
@@ -157,6 +183,30 @@ func TestNewTxArgs(t *testing.T) {
 	if expected.Data != args.Data {
 		t.Errorf("Data shoud be %#v but is %#v", expected.Data, args.Data)
 	}
+
+	if expected.BlockNumber != args.BlockNumber {
+		t.Errorf("BlockNumber shoud be %#v but is %#v", expected.BlockNumber, args.BlockNumber)
+	}
+}
+
+func TestNewTxArgsBlockInt(t *testing.T) {
+	input := `[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155"}, 5]`
+	expected := new(NewTxArgs)
+	expected.From = "0xb60e8dd61c5d32be8058bb8eb970870f07233155"
+	expected.BlockNumber = big.NewInt(5).Int64()
+
+	args := new(NewTxArgs)
+	if err := json.Unmarshal([]byte(input), &args); err != nil {
+		t.Error(err)
+	}
+
+	if expected.From != args.From {
+		t.Errorf("From shoud be %#v but is %#v", expected.From, args.From)
+	}
+
+	if expected.BlockNumber != args.BlockNumber {
+		t.Errorf("BlockNumber shoud be %#v but is %#v", expected.BlockNumber, args.BlockNumber)
+	}
 }
 
 func TestNewTxArgsEmpty(t *testing.T) {
@@ -169,6 +219,34 @@ func TestNewTxArgsEmpty(t *testing.T) {
 	}
 }
 
+func TestNewTxArgsReqs(t *testing.T) {
+	args := new(NewTxArgs)
+	args.From = "0xb60e8dd61c5d32be8058bb8eb970870f07233155"
+
+	err := args.requirements()
+	switch err.(type) {
+	case nil:
+		break
+	default:
+		t.Errorf("Get %T", err)
+	}
+}
+
+func TestNewTxArgsReqsFromBlank(t *testing.T) {
+	args := new(NewTxArgs)
+	args.From = ""
+
+	err := args.requirements()
+	switch err.(type) {
+	case nil:
+		t.Error("Expected error but didn't get one")
+	case *ValidationError:
+		break
+	default:
+		t.Error("Wrong type of error")
+	}
+}
+
 func TestGetStorageArgs(t *testing.T) {
 	input := `["0x407d73d8a49eeb85d32cf465507dd71d507100c1", "latest"]`
 	expected := new(GetStorageArgs)
diff --git a/rpc/util.go b/rpc/util.go
index b3d83409f..724c8b503 100644
--- a/rpc/util.go
+++ b/rpc/util.go
@@ -17,10 +17,6 @@
 package rpc
 
 import (
-	"encoding/json"
-	"fmt"
-	"math/big"
-	"reflect"
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -31,74 +27,6 @@ import (
 
 var rpclogger = logger.NewLogger("RPC")
 
-// Unmarshal state is a helper method which has the ability to decode messsages
-// that use the `defaultBlock` (https://github.com/ethereum/wiki/wiki/JSON-RPC#the-default-block-parameter)
-// For example a `call`: [{to: "0x....", data:"0x..."}, "latest"]. The first argument is the transaction
-// message and the second one refers to the block height (or state) to which to apply this `call`.
-func UnmarshalRawMessages(b []byte, iface interface{}, number *int64) (err error) {
-	var data []json.RawMessage
-	if err = json.Unmarshal(b, &data); err != nil && len(data) == 0 {
-		return NewDecodeParamError(err.Error())
-	}
-
-	// Hrm... Occurs when no params
-	if len(data) == 0 {
-		return NewDecodeParamError("No data")
-	}
-
-	// Number index determines the index in the array for a possible block number
-	numberIndex := 0
-
-	value := reflect.ValueOf(iface)
-	rvalue := reflect.Indirect(value)
-
-	switch rvalue.Kind() {
-	case reflect.Slice:
-		// This is a bit of a cheat, but `data` is expected to be larger than 2 if iface is a slice
-		if number != nil {
-			numberIndex = len(data) - 1
-		} else {
-			numberIndex = len(data)
-		}
-
-		slice := reflect.MakeSlice(rvalue.Type(), numberIndex, numberIndex)
-		for i, raw := range data[0:numberIndex] {
-			v := slice.Index(i).Interface()
-			if err = json.Unmarshal(raw, &v); err != nil {
-				fmt.Println(err, v)
-				return err
-			}
-			slice.Index(i).Set(reflect.ValueOf(v))
-		}
-		reflect.Indirect(rvalue).Set(slice) //value.Set(slice)
-	case reflect.Struct:
-		fallthrough
-	default:
-		if err = json.Unmarshal(data[0], iface); err != nil {
-			return NewDecodeParamError(err.Error())
-		}
-		numberIndex = 1
-	}
-
-	// <0 index means out of bound for block number
-	if numberIndex >= 0 && len(data) > numberIndex {
-		if err = blockNumber(data[numberIndex], number); err != nil {
-			return NewDecodeParamError(err.Error())
-		}
-	}
-
-	return nil
-}
-
-func i2hex(n int) string {
-	return common.ToHex(big.NewInt(int64(n)).Bytes())
-}
-
-type RpcServer interface {
-	Start()
-	Stop()
-}
-
 type Log struct {
 	Address string   `json:"address"`
 	Topic   []string `json:"topic"`