// TestNewBlockFromBlockAndBytes tests creation of a Block from a MsgBlock and
// raw bytes.
func TestNewBlockFromBlockAndBytes(t *testing.T) {
// Serialize the test block.
var block100000Buf bytes.Buffer
err := Block100000.Serialize(&block100000Buf)
if err != nil {
t.Errorf("Serialize: %v", err)
}
block100000Bytes := block100000Buf.Bytes()
// Create a new block from the serialized bytes.
b := btcutil.NewBlockFromBlockAndBytes(&Block100000, block100000Bytes)
// Ensure we get the same data back out.
serializedBytes, err := b.Bytes()
if err != nil {
t.Errorf("Bytes: %v", err)
return
}
if !bytes.Equal(serializedBytes, block100000Bytes) {
t.Errorf("Bytes: wrong bytes - got %v, want %v",
spew.Sdump(serializedBytes),
spew.Sdump(block100000Bytes))
}
if msgBlock := b.MsgBlock(); !reflect.DeepEqual(msgBlock, &Block100000) {
t.Errorf("MsgBlock: mismatched MsgBlock - got %v, want %v",
spew.Sdump(msgBlock), spew.Sdump(&Block100000))
}
}
// handleBlockMsg is invoked when a peer receives a block bitcoin message. It
// blocks until the bitcoin block has been fully processed.
func (p *peer) handleBlockMsg(msg *btcwire.MsgBlock, buf []byte) {
// Convert the raw MsgBlock to a btcutil.Block which provides some
// convenience methods and things such as hash caching.
block := btcutil.NewBlockFromBlockAndBytes(msg, buf)
// Add the block to the known inventory for the peer.
hash, err := block.Sha()
if err != nil {
log.Errorf("Unable to get block hash: %v", err)
return
}
iv := btcwire.NewInvVect(btcwire.InvTypeBlock, hash)
p.addKnownInventory(iv)
// Queue the block up to be handled by the block
// manager and intentionally block further receives
// until the bitcoin block is fully processed and known
// good or bad. This helps prevent a malicious peer
// from queueing up a bunch of bad blocks before
// disconnecting (or being disconnected) and wasting
// memory. Additionally, this behavior is depended on
// by at least the block acceptance test tool as the
// reference implementation processes blocks in the same
// thread and therefore blocks further messages until
// the bitcoin block has been fully processed.
p.server.blockManager.QueueBlock(block, p)
<-p.blockProcessed
}
