do a few

x/smoketest/server.go

@@ -0,0 +1,32 @@
+package smoketest
+
+import (
+	"bytes"
+	"io"
+	"net"
+)
+
+func handleConn(conn net.Conn) error {
+	buf := &bytes.Buffer{}
+
+	_, err := buf.ReadFrom(conn)
+	if err != nil {
+		return err
+	}
+
+	_, err = io.Copy(conn, buf)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func New(listener net.Listener) error {
+	for {
+		conn, err := listener.Accept()
+		if err == nil {
+			go handleConn(conn)
+		}
+	}
+}