Merge branch 'develop' into qt5.4

Dockerfile

@@ -13,8 +13,8 @@ RUN apt-get update && apt-get upgrade -y
 RUN apt-get install -y git mercurial build-essential software-properties-common pkg-config libgmp3-dev libreadline6-dev libpcre3-dev libpcre++-dev
 
 ## Build and install Go
-RUN hg clone -u release https://code.google.com/p/go
-RUN cd go && hg update go1.4
+RUN git clone https://go.googlesource.com/go
+RUN cd go && git checkout go1.4.1
 RUN cd go/src && ./all.bash && go version
 
 ## Install GUI dependencies

core/chain_manager.go

@@ -251,7 +251,13 @@ func (self *ChainManager) GetBlockHashesFromHash(hash []byte, max uint64) (chain
 
 	// XXX Could be optimised by using a different database which only holds hashes (i.e., linked list)
 	for i := uint64(0); i < max; i++ {
-		block = self.GetBlock(block.Header().ParentHash)
+		parentHash := block.Header().ParentHash
+		block = self.GetBlock(parentHash)
+		if block == nil {
+			chainlogger.Infof("GetBlockHashesFromHash Parent UNKNOWN %x\n", parentHash)
+			break
+		}
+
 		chain = append(chain, block.Hash())
 		if block.Header().Number.Cmp(ethutil.Big0) <= 0 {
 			break

eth/block_pool.go

@@ -1098,7 +1098,7 @@ func (self *BlockPool) requestBlocks(attempts int, hashes [][]byte) {
 		poolLogger.Debugf("request %v missing blocks from %v/%v peers: chosen %v", len(hashes), repetitions, peerCount, indexes)
 		for _, peer := range self.peers {
 			if i == indexes[0] {
-				poolLogger.Debugf("request %v missing blocks from peer %s", len(hashes), peer.id)
+				poolLogger.Debugf("request %v missing blocks [%x/%x] from peer %s", len(hashes), hashes[0][:4], hashes[len(hashes)-1][:4], peer.id)
 				peer.requestBlocks(hashes)
 				indexes = indexes[1:]
 				if len(indexes) == 0 {

eth/protocol.go

@@ -13,7 +13,7 @@ import (
 )
 
 const (
-	ProtocolVersion    = 51
+	ProtocolVersion    = 52
 	NetworkId          = 0
 	ProtocolLength     = uint64(8)
 	ProtocolMaxMsgSize = 10 * 1024 * 1024