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Implemented get chain msg

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This commit is contained in:
obscuren 2014-01-28 15:35:44 +01:00
parent 4a82230de5
commit 3e400739a7
1 changed files with 33 additions and 11 deletions
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44
peer.go
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@ -178,9 +178,14 @@ out:
// Respond back with pong
p.QueueMessage(ethwire.NewMessage(ethwire.MsgPongTy, ""))
case ethwire.MsgPongTy:
// If we received a pong back from a peer we set the
// last pong so the peer handler knows this peer is still
// active.
p.lastPong = time.Now().Unix()
case ethwire.MsgBlockTy:
for i := 0; i < msg.Data.Length(); i++ {
// Get all blocks and process them (TODO reverse order?)
msg.Data = msg.Data.Get(0)
for i := msg.Data.Length() - 1; i >= 0; i-- {
block := ethchain.NewBlockFromRlpValue(msg.Data.Get(i))
err := p.ethereum.BlockManager.ProcessBlock(block)
@ -189,10 +194,15 @@ out:
}
}
case ethwire.MsgTxTy:
// If the message was a transaction queue the transaction
// in the TxPool where it will undergo validation and
// processing when a new block is found
for i := 0; i < msg.Data.Length(); i++ {
p.ethereum.TxPool.QueueTransaction(ethchain.NewTransactionFromRlpValue(msg.Data.Get(i)))
}
case ethwire.MsgGetPeersTy:
// Flag this peer as a 'requested of new peers' this to
// prevent malicious peers being forced.
p.requestedPeerList = true
// Peer asked for list of connected peers
p.pushPeers()
@ -214,22 +224,31 @@ out:
p.requestedPeerList = false
}
case ethwire.MsgGetChainTy:
blocksFound := 0
l := msg.Data.Length()
var parent *ethchain.Block
// FIXME
msg.Data = msg.Data.Get(0)
// Length minus one since the very last element in the array is a count
l := msg.Data.Length() - 1
// Amount of parents in the canonical chain
amountOfBlocks := msg.Data.Get(l).AsUint()
// Check each SHA block hash from the message and determine whether
// the SHA is in the database
for i := 0; i < l; i++ {
if p.ethereum.BlockManager.BlockChain().HasBlock(msg.Data.Get(i).AsString()) {
blocksFound++
// TODO send reply
if data := msg.Data.Get(i).AsBytes(); p.ethereum.BlockManager.BlockChain().HasBlock(data) {
parent = p.ethereum.BlockManager.BlockChain().GetBlock(data)
break
}
}
// If no blocks are found we send back a reply with msg not in chain
// and the last hash from get chain
if blocksFound == 0 {
lastHash := msg.Data.Get(l - 1)
p.QueueMessage(ethwire.NewMessage(ethwire.MsgNotInChainTy, lastHash))
// If a parent is found send back a reply
if parent != nil {
chain := p.ethereum.BlockManager.BlockChain().GetChainFromHash(parent.Hash(), amountOfBlocks)
p.QueueMessage(ethwire.NewMessage(ethwire.MsgBlockTy, chain))
} else {
// If no blocks are found we send back a reply with msg not in chain
// and the last hash from get chain
lastHash := msg.Data.Get(l)
p.QueueMessage(ethwire.NewMessage(ethwire.MsgNotInChainTy, lastHash.AsRaw()))
}
case ethwire.MsgNotInChainTy:
log.Println("Not in chain, not yet implemented")
@ -320,6 +339,9 @@ func (p *Peer) handleHandshake(msg *ethwire.Msg) {
p.Stop()
}
} else {
msg := ethwire.NewMessage(ethwire.MsgGetChainTy, []interface{}{p.ethereum.BlockManager.BlockChain().CurrentBlock.Hash(), uint64(100)})
p.QueueMessage(msg)
}
}