only use @ syntax when the dns port is not port 53

3 years ago · db5862cda8
parent a6fbaa7c7a
commit db5862cda8
1 changed files with 5 additions and 1 deletions
--- a/llarp/dns/unbound_resolver.cpp
+++ b/llarp/dns/unbound_resolver.cpp
@ -110,7 +110,11 @@ namespace llarp::dns
  UnboundResolver::AddUpstreamResolver(const SockAddr& upstreamResolver)
  {
    std::stringstream ss;
-    ss << upstreamResolver.hostString() << "@" << upstreamResolver.getPort();
+    ss << upstreamResolver.hostString();
+
+    if (const auto port = upstreamResolver.getPort(); port != 53)
+      ss << "@" << port;
+
    const auto str = ss.str();
    if (ub_ctx_set_fwd(unboundContext, str.c_str()) != 0)
    {