coreos/etcd — pull request #1771 by xiang90 (2014-11-24 05:15:11+00:00)
Title: pkg/transport: add timeout dailer and timeout listener

This pull request implements timeout dialer and timeout listener, which return timeout conn.
A timeout conn is a connection with read and write timeout for each operation.

We need to control the timeout at tcp level in our raft transport layer.