Fix nil pointer dereference for empty edns conifg

shawn1m · Jan 9, 2021 · 0dcc87f · 0dcc87f
1 parent 82d9039
commit 0dcc87f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/core/outbound/clients/remote.go b/core/outbound/clients/remote.go
@@ -31,7 +31,10 @@ type RemoteClient struct {
 
 func NewClient(q *dns.Msg, u *common.DNSUpstream, resolver resolver.Resolver, ip string, cache *cache.Cache) *RemoteClient {
 	c := &RemoteClient{questionMessage: q.Copy(), dnsUpstream: u, dnsResolver: resolver, inboundIP: ip, cache: cache}
-	c.getEDNSClientSubnetIP()
+
+	if c.dnsUpstream.EDNSClientSubnet != nil {
+		c.getEDNSClientSubnetIP()
+	}
 
 	return c
 }