From 7d938ac7fd4f787f6e4507ce69c6acc677eb8080 Mon Sep 17 00:00:00 2001
From: Wei-Ning Huang <w@cobinhood.com>
Date: Tue, 16 Oct 2018 19:26:29 +0800
Subject: dex/core: misc bug fixes

---
 dex/api_backend.go | 3 +++
 dex/app.go         | 5 +++--
 dex/governance.go  | 4 ++++
 3 files changed, 10 insertions(+), 2 deletions(-)

(limited to 'dex')

diff --git a/dex/api_backend.go b/dex/api_backend.go
index 3c9be5f3d..4d0cdc9e9 100644
--- a/dex/api_backend.go
+++ b/dex/api_backend.go
@@ -79,6 +79,9 @@ func (b *DexAPIBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumb
 }
 
 func (b *DexAPIBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
+	if blockNr == rpc.PendingBlockNumber {
+		blockNr = rpc.BlockNumber(b.dex.blockchain.CurrentBlock().Header().Number.Uint64())
+	}
 	header, err := b.HeaderByNumber(ctx, blockNr)
 	if header == nil || err != nil {
 		return nil, nil, err
diff --git a/dex/app.go b/dex/app.go
index 35a771460..85d7ea621 100644
--- a/dex/app.go
+++ b/dex/app.go
@@ -308,11 +308,12 @@ func (d *DexconApp) BlockDelivered(blockHash coreCommon.Hash, result coreTypes.F
 
 	_, err = d.blockchain.InsertChain(
 		[]*types.Block{types.NewBlock(&types.Header{
-			ParentHash: common.Hash(block.ParentHash),
+			ParentHash: d.blockchain.CurrentBlock().Hash(),
 			Number:     new(big.Int).SetUint64(result.Height),
-			Time:       new(big.Int).SetInt64(result.Timestamp.Unix()),
+			Time:       big.NewInt(result.Timestamp.Unix()),
 			TxHash:     types.DeriveSha(transactions),
 			Coinbase:   common.BytesToAddress(block.ProposerID.Hash[:]),
+			GasLimit:   800000,
 		}, transactions, nil, nil)})
 	if err != nil {
 		log.Error("insert chain", "error", err)
diff --git a/dex/governance.go b/dex/governance.go
index a78cf2d4f..19b9e578c 100644
--- a/dex/governance.go
+++ b/dex/governance.go
@@ -109,6 +109,10 @@ func (d *DexconGovernance) sendGovTx(ctx context.Context, data []byte) error {
 		return err
 	}
 
+	if nonce > 0 {
+		nonce += 1
+	}
+
 	tx := types.NewTransaction(
 		nonce,
 		vm.GovernanceContractAddress,
-- 
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