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6cf589dc9b
* [NOD-1145] Remove panics from regular flows. * [NOD-1145] Remove panics from the handshake flow. * [NOD-1045] Fix merge errors. * [NOD-1045] Remove a comment. * [NOD-1045] Handle errors properly in AddTransaction and AddBlock. * [NOD-1045] Remove a comment. * [NOD-1045] Wrap ErrPeerWithSameIDExists with ProtocolError. * [NOD-1145] Add TODOs.
56 lines
1.7 KiB
Go
56 lines
1.7 KiB
Go
package blockrelay
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import (
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"github.com/kaspanet/kaspad/blockdag"
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"github.com/kaspanet/kaspad/netadapter/router"
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peerpkg "github.com/kaspanet/kaspad/protocol/peer"
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"github.com/kaspanet/kaspad/protocol/protocolerrors"
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"github.com/kaspanet/kaspad/wire"
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"github.com/pkg/errors"
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)
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// RelayBlockRequestsContext is the interface for the context needed for the HandleRelayBlockRequests flow.
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type RelayBlockRequestsContext interface {
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DAG() *blockdag.BlockDAG
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}
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// HandleRelayBlockRequests listens to wire.MsgGetRelayBlocks messages and sends
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// their corresponding blocks to the requesting peer.
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func HandleRelayBlockRequests(context RelayBlockRequestsContext, incomingRoute *router.Route,
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outgoingRoute *router.Route, peer *peerpkg.Peer) error {
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for {
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message, err := incomingRoute.Dequeue()
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if err != nil {
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return err
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}
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getRelayBlocksMessage := message.(*wire.MsgGetRelayBlocks)
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for _, hash := range getRelayBlocksMessage.Hashes {
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// Fetch the block from the database.
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block, err := context.DAG().BlockByHash(hash)
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if blockdag.IsNotInDAGErr(err) {
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return protocolerrors.Errorf(true, "block %s not found", hash)
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} else if err != nil {
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return errors.Wrapf(err, "unable to fetch requested block hash %s", hash)
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}
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msgBlock := block.MsgBlock()
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// If we are a full node and the peer is a partial node, we must convert
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// the block to a partial block.
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nodeSubnetworkID := context.DAG().SubnetworkID()
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peerSubnetworkID := peer.SubnetworkID()
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isNodeFull := nodeSubnetworkID == nil
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isPeerFull := peerSubnetworkID == nil
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if isNodeFull && !isPeerFull {
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msgBlock.ConvertToPartial(peerSubnetworkID)
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}
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err = outgoingRoute.Enqueue(msgBlock)
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if err != nil {
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return err
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}
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}
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}
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}
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