Ported remaining netns.sh

- Ported remaining netns.sh tests
- Begin work on generic implementation of bind interface

src/conn_default.go

@@ -6,6 +6,41 @@ import (
 	"net"
 )
 
+/* This code is meant to be a temporary solution
+ * on platforms for which the sticky socket / source caching behavior
+ * has not yet been implemented.
+ *
+ * See conn_linux.go for an implementation on the linux platform.
+ */
+
+type Endpoint *net.UDPAddr
+
+type NativeBind *net.UDPConn
+
+func CreateUDPBind(port uint16) (UDPBind, uint16, error) {
+
+	// listen
+
+	addr := UDPAddr{
+		Port: int(port),
+	}
+	conn, err := net.ListenUDP("udp", &addr)
+	if err != nil {
+		return nil, 0, err
+	}
+
+	// retrieve port
+
+	laddr := conn.LocalAddr()
+	uaddr, _ = net.ResolveUDPAddr(
+		laddr.Network(),
+		laddr.String(),
+	)
+	return uaddr.Port
+}
+
+func (_ Endpoint) ClearSrc() {}
+
 func SetMark(conn *net.UDPConn, value uint32) error {
 	return nil
 }