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network: prevent putting duplicate addresses into pool from peer's data

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It can't be trusted.
This commit is contained in:
Roman Khimov 2021-03-26 12:31:07 +03:00
parent d0634a7829
commit fa4380c9da
1 changed files with 3 additions and 1 deletions
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4
pkg/network/server.go
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@ -916,9 +916,11 @@ func (s *Server) handleAddrCmd(p Peer, addrs *payload.AddressList) error {
if !p.CanProcessAddr() { if !p.CanProcessAddr() {
return errors.New("unexpected addr received") return errors.New("unexpected addr received")
} }
dups := make(map[string]bool)
for _, a := range addrs.Addrs { for _, a := range addrs.Addrs {
addr, err := a.GetTCPAddress() addr, err := a.GetTCPAddress()
if err == nil { if err == nil && !dups[addr] {
dups[addr] = true
s.discovery.BackFill(addr) s.discovery.BackFill(addr)
} }
} }