TarnaWijaya
26ed99fda6
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55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
package session
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import (
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"github.com/df-mc/dragonfly/server/world"
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"github.com/sandertv/gophertunnel/minecraft/protocol"
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"github.com/sandertv/gophertunnel/minecraft/protocol/packet"
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)
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// ClientCacheBlobStatusHandler handles the ClientCacheBlobStatus packet.
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type ClientCacheBlobStatusHandler struct {
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}
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// Handle ...
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func (c *ClientCacheBlobStatusHandler) Handle(p packet.Packet, s *Session, _ *world.Tx, _ Controllable) error {
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pk := p.(*packet.ClientCacheBlobStatus)
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resp := &packet.ClientCacheMissResponse{Blobs: make([]protocol.CacheBlob, 0, len(pk.MissHashes))}
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s.blobMu.Lock()
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for _, hit := range pk.HitHashes {
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delete(s.blobs, hit)
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c.resolveBlob(hit, s)
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}
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for _, miss := range pk.MissHashes {
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blob, ok := s.blobs[miss]
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if !ok {
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// This is expected to happen sometimes, for example when we send the same block storage or biomes a lot of
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// times in a short timeframe. There is no need to log this, it'll just cause unnecessary noise that doesn't
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// actually aid in terms of information.
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continue
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}
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resp.Blobs = append(resp.Blobs, protocol.CacheBlob{Hash: miss, Payload: blob})
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c.resolveBlob(miss, s)
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}
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s.blobMu.Unlock()
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if len(resp.Blobs) > 0 {
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s.writePacket(resp)
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}
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return nil
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}
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// resolveBlob resolves a blob hash in the session passed. It assumes s.blobMu is locked upon calling.
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func (c *ClientCacheBlobStatusHandler) resolveBlob(hash uint64, s *Session) {
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leftover := make([]map[uint64]struct{}, 0, len(s.openChunkTransactions))
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for _, m := range s.openChunkTransactions {
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delete(m, hash)
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if len(m) != 0 {
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leftover = append(leftover, m)
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}
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}
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s.openChunkTransactions = leftover
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delete(s.blobs, hash)
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}
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