fix proxy

app/ingressgateway/proxy.go

@@ -3,20 +3,19 @@ package ingressgateway
 import (
 	"io"
 	"net"
-
-	"golang.org/x/sync/errgroup"
 )
 
 func proxy(client, server net.Conn) error {
-	var eg errgroup.Group
+	errCh := make(chan error, 2)
 
-	eg.Go(func() error { return relay(client, server) })
-	eg.Go(func() error { return relay(server, client) })
+	go relay(errCh, client, server)
+	go relay(errCh, server, client)
 
-	return eg.Wait()
+	return <-errCh
 }
 
-func relay(src io.Reader, dst io.Writer) error {
+func relay(errCh chan error, src io.Reader, dst io.Writer) {
 	_, err := io.Copy(dst, src)
-	return err
+	errCh <- err
+	return
 }