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swarm/network: protect addrCountC in Kademlia.AddrCountC function

Browse source 
https://github.com/ethersphere/go-ethereum/issues/1198#issuecomment-462273444
This commit is contained in:
Janos Guljas 2019-02-11 11:03:39 +01:00
parent 11d944121f
commit e4111471d4
1 changed files with 3 additions and 0 deletions
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3
swarm/network/kademlia.go
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@ -353,6 +353,9 @@ func (k *Kademlia) sendNeighbourhoodDepthChange() {
// Not receiving from the returned channel will block Register function
// when address count value changes.
func (k *Kademlia) AddrCountC() <-chan int {
k.lock.Lock()
defer k.lock.Unlock()
if k.addrCountC == nil {
k.addrCountC = make(chan int)
}