cmd/stdiscosrc: Handle address family indicator on other schemes than tcp

cmd/stdiscosrv/apisrv.go

@@ -18,6 +18,7 @@ import (
 	"net/http"
 	"net/url"
 	"strconv"
+	"strings"
 	"sync"
 	"time"
 
@@ -334,13 +335,14 @@ func fixupAddresses(remote net.IP, addresses []string) []string {
 
 		ip := net.ParseIP(host)
 		if host == "" || ip.IsUnspecified() {
-			// Do not use IPv6 remote address if requested scheme is tcp4
-			if uri.Scheme == "tcp4" && remote.To4() == nil {
+			// Do not use IPv6 remote address if requested scheme is ...4
+			// (i.e., tcp4, kcp4, etc.)
+			if strings.HasSuffix(uri.Scheme, "4") && remote.To4() == nil {
 				continue
 			}
 
-			// Do not use IPv4 remote address if requested scheme is tcp6
-			if uri.Scheme == "tcp6" && remote.To4() != nil {
+			// Do not use IPv4 remote address if requested scheme is ...6
+			if strings.HasSuffix(uri.Scheme, "6") && remote.To4() != nil {
 				continue
 			}