Fix memory leak

internal/turbotunnel/consts.go

@@ -0,0 +1,22 @@
+// Package turbotunnel is facilities for embedding packet-based reliability
+// protocols inside other protocols.
+//
+// https://github.com/net4people/bbs/issues/9
+package turbotunnel
+
+import "errors"
+
+// QueueSize is the size of send and receive queues in QueuePacketConn and
+// RemoteMap.
+const QueueSize = 128
+
+var errClosedPacketConn = errors.New("operation on closed connection")
+var errNotImplemented = errors.New("not implemented")
+
+// DummyAddr is a placeholder net.Addr, for when a programming interface
+// requires a net.Addr but there is none relevant. All DummyAddrs compare equal
+// to each other.
+type DummyAddr struct{}
+
+func (addr DummyAddr) Network() string { return "dummy" }
+func (addr DummyAddr) String() string  { return "dummy" }