mirror of
https://github.com/nspcc-dev/neo-go.git
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ddd1d92ff1
The idea here is to preserve the history of `dev` branch development and its code when merging with the `master`. Later this code could be moved into the masters code where appropriate.
60 lines
1.6 KiB
Go
60 lines
1.6 KiB
Go
package syncmgr
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import (
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"github.com/CityOfZion/neo-go/pkg/wire/payload"
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)
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func (s *Syncmgr) normalModeOnHeaders(peer SyncPeer, hdrs []*payload.BlockBase) error {
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// If in normal mode, first process the headers
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err := s.cfg.ProcessHeaders(hdrs)
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if err != nil {
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// If something went wrong with processing the headers
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// Ask another peer for the headers.
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//XXX: Increment banscore for this peer
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return s.cfg.FetchHeadersAgain(hdrs[0].Hash)
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}
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lenHeaders := len(hdrs)
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firstHash := hdrs[0].Hash
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firstHdrIndex := hdrs[0].Index
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lastHash := hdrs[lenHeaders-1].Hash
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// Update syncmgr latest header
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s.headerHash = lastHash
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// If there are 2k headers, then ask for more headers and switch back to headers mode.
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if lenHeaders == 2000 {
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s.syncmode = headersMode
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return s.cfg.RequestHeaders(lastHash)
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}
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// Ask for the corresponding block iff there is < 2k headers
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// then switch to blocksMode
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// Bounds state that len > 1 && len!= 2000 & maxHeadersInMessage == 2000
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// This means that we have less than 2k headers
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s.syncmode = blockMode
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return s.cfg.RequestBlock(firstHash, firstHdrIndex)
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}
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// normalModeOnBlock is called when the sync manager is normal mode
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// and receives a block.
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func (s *Syncmgr) normalModeOnBlock(peer SyncPeer, block payload.Block) error {
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// stop the timer that periodically asks for blocks
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s.timer.Stop()
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// process block
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err := s.processBlock(block)
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if err != nil {
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s.timer.Reset(blockTimer)
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return s.cfg.FetchBlockAgain(block.Hash)
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}
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diff := peer.Height() - block.Index
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if diff > trailingHeight {
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s.syncmode = headersMode
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return s.cfg.RequestHeaders(block.Hash)
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}
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s.timer.Reset(blockTimer)
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return nil
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}
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