Add wildcard hostname support for SSL passthrough

kubernetes · Sep 18, 2024 · e2995f3 · e2995f3
1 parent 9e6c406
commit e2995f3
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/pkg/tcpproxy/tcp.go b/pkg/tcpproxy/tcp.go
@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"io"
 	"net"
+	"strings"
 
 	"k8s.io/klog/v2"
 
@@ -46,10 +47,15 @@ func (p *TCPProxy) Get(host string) *TCPServer {
 		return p.Default
 	}
 
+	_, parentHost, hasParentHost := strings.Cut(host, ".")
+
 	for _, s := range p.ServerList {
 		if s.Hostname == host {
 			return s
 		}
+		if strings.HasPrefix(s.Hostname, "*.") && hasParentHost && parentHost == s.Hostname[2:] {
+			return s
+		}
 	}
 
 	return p.Default