From d261c3f455b880bfdbefe657df188dc095e2f508 Mon Sep 17 00:00:00 2001
From: Jeffrey Wilcke <geffobscura@gmail.com>
Date: Mon, 27 Jul 2015 13:44:37 +0200
Subject: [PATCH] rpc: to in Call no longer required. Fixed eth_estimateGas

---
 rpc/api/args_test.go | 6 +++---
 rpc/api/eth.go       | 2 +-
 rpc/api/eth_args.go  | 4 ----
 3 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/rpc/api/args_test.go b/rpc/api/args_test.go
index bb279718b..23ae2930d 100644
--- a/rpc/api/args_test.go
+++ b/rpc/api/args_test.go
@@ -935,9 +935,9 @@ func TestCallArgsNotStrings(t *testing.T) {
 func TestCallArgsToEmpty(t *testing.T) {
 	input := `[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155"}]`
 	args := new(CallArgs)
-	str := ExpectValidationError(json.Unmarshal([]byte(input), &args))
-	if len(str) > 0 {
-		t.Error(str)
+	err := json.Unmarshal([]byte(input), &args)
+	if err != nil {
+		t.Error("Did not expect error. Got", err)
 	}
 }
 
diff --git a/rpc/api/eth.go b/rpc/api/eth.go
index ed636004c..328cd4f19 100644
--- a/rpc/api/eth.go
+++ b/rpc/api/eth.go
@@ -322,7 +322,7 @@ func (self *ethApi) EstimateGas(req *shared.Request) (interface{}, error) {
 	if len(gas) == 0 {
 		return newHexNum(0), nil
 	} else {
-		return newHexNum(gas), nil
+		return newHexNum(common.String2Big(gas)), err
 	}
 }
 
diff --git a/rpc/api/eth_args.go b/rpc/api/eth_args.go
index ae394e7ec..2f864b5c1 100644
--- a/rpc/api/eth_args.go
+++ b/rpc/api/eth_args.go
@@ -469,10 +469,6 @@ func (args *CallArgs) UnmarshalJSON(b []byte) (err error) {
 	}
 
 	args.From = ext.From
-
-	if len(ext.To) == 0 {
-		return shared.NewValidationError("to", "is required")
-	}
 	args.To = ext.To
 
 	var num *big.Int