Fall back to 5222 if no xmpp-client SRV records are provided

connect.go

@@ -15,7 +15,6 @@ func connect(options xmpp.Options, directTLS bool) (*xmpp.Client, error) {
 		server := options.User[strings.LastIndex(options.User, "@")+1:]
 		// Lookup xmpp-client SRV records if direct TLS is not required
 		if !directTLS {
-			// TODO: Fallback to 5222 if no xmpp-client SRV records exist
 			if _, addrs, err := net.LookupSRV("xmpp-client", "tcp", server); err == nil {
 				if len(addrs) > 0 {
 					for _, adr := range addrs {
@@ -28,6 +27,13 @@ func connect(options xmpp.Options, directTLS bool) (*xmpp.Client, error) {
 					}
 				}
 			}
+			// Try port 5222 if no xmpp-client SRV records are provided.
+			options.Host = server + ":5222"
+			// Connect to server
+			client, err := options.NewClient()
+			if err == nil {
+				return client, err
+			}
 			// Unset STartTLS as we try direct TLS now
 			options.NoTLS = false
 			options.StartTLS = false