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p2p/discover: clarify lookup behavior on empty table

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We have changed this behavior, better clarify in comment.

Signed-off-by: Csaba Kiraly <csaba.kiraly@gmail.com>
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Csaba Kiraly 2025-09-12 10:52:53 +02:00
parent a9f9e0d589
commit 72d3e881b3
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4
p2p/discover/lookup.go
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@ -27,6 +27,7 @@ import (
// lookup performs a network search for nodes close to the given target. It approaches the // lookup performs a network search for nodes close to the given target. It approaches the
// target by querying nodes that are closer to it on each iteration. The given target does // target by querying nodes that are closer to it on each iteration. The given target does
// not need to be an actual node identifier. // not need to be an actual node identifier.
// lookup on an empty table will return immediately with no nodes.
type lookup struct { type lookup struct {
tab *Table tab *Table
queryfunc queryFunc queryfunc queryFunc
@ -142,6 +143,9 @@ func (it *lookup) query(n *enode.Node, reply chan<- []*enode.Node) {
// lookupIterator performs lookup operations and iterates over all seen nodes. // lookupIterator performs lookup operations and iterates over all seen nodes.
// When a lookup finishes, a new one is created through nextLookup. // When a lookup finishes, a new one is created through nextLookup.
// LookupIterator waits for table initialization and triggers a table refresh
// when necessary.
type lookupIterator struct { type lookupIterator struct {
buffer []*enode.Node buffer []*enode.Node
nextLookup lookupFunc nextLookup lookupFunc