igrigorik/node-spdyproxy — pull request #8 by indutny (2012-10-13 07:37:02+00:00)
Title: server: terminate connection when on socket close

Probable fix for #3.

The thing is that you're not handling spdy socket's `close` event, you only push data from server to client, regardless of client's status. Secure proxy may also be affected by this, by I haven't checked it yet.