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Only find the farthest route on wildcards

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This commit is contained in:
Frank Denis 2021-01-03 13:33:51 +01:00
parent 0f54b2b34c
commit 1e10251407
1 changed files with 18 additions and 2 deletions
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20
dnscrypt-proxy/serversInfo.go
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@ -323,8 +323,10 @@ func route(proxy *Proxy, name string) (*Relay, error) {
if routes == nil {
return nil, nil
}
wildcard := false
relayNames, ok := (*routes)[name]
if !ok {
wildcard = true
relayNames, ok = (*routes)["*"]
}
if !ok {
@ -338,6 +340,8 @@ func route(proxy *Proxy, name string) (*Relay, error) {
for _, registeredServer := range proxy.registeredRelays {
relayStamps = append(relayStamps, registeredServer.stamp)
}
wildcard = true
break
} else {
for _, registeredServer := range proxy.registeredRelays {
if registeredServer.name == relayName {
@ -356,10 +360,22 @@ func route(proxy *Proxy, name string) (*Relay, error) {
if len(relayStamps) == 0 {
return nil, fmt.Errorf("Empty relay set for [%v]", name)
}
relayCandidateStamp := findFarthestRoute(proxy, name, relayStamps)
var relayCandidateStamp *stamps.ServerStamp
if !wildcard || len(relayStamps) == 1 {
relayCandidateStamp = &relayStamps[rand.Intn(len(relayStamps))]
} else {
relayCandidateStamp = findFarthestRoute(proxy, name, relayStamps)
}
if relayCandidateStamp == nil {
return nil, fmt.Errorf("No valid relay for server [%v]", name)
}
relayName := relayCandidateStamp.ServerAddrStr
for _, registeredServer := range proxy.registeredRelays {
if registeredServer.stamp.ServerAddrStr == relayCandidateStamp.ServerAddrStr {
relayName = registeredServer.name
break
}
}
switch relayCandidateStamp.Proto {
case stamps.StampProtoTypeDNSCrypt, stamps.StampProtoTypeDNSCryptRelay:
relayUDPAddr, err := net.ResolveUDPAddr("udp", relayCandidateStamp.ServerAddrStr)
@ -370,7 +386,7 @@ func route(proxy *Proxy, name string) (*Relay, error) {
if err != nil {
return nil, err
}
dlog.Noticef("Anonymizing queries for [%v] via [%v]", name, relayCandidateStamp.ServerAddrStr)
dlog.Noticef("Anonymizing queries for [%v] via [%v]", name, relayName)
return &Relay{Proto: stamps.StampProtoTypeDNSCryptRelay, Dnscrypt: &DNSCryptRelay{RelayUDPAddr: relayUDPAddr, RelayTCPAddr: relayTCPAddr}}, nil
case stamps.StampProtoTypeODoHRelay:
return &Relay{Proto: stamps.StampProtoTypeODoHRelay, ODoH: &ODoHRelay{}}, nil