fixed the libeventpaxos socket free, proxy <-> server, proxy <-> client.
fixed the libeventpaxos socket free, proxy <-> server, proxy <-> client.

hemingcui/libevent_paxos,hemingcui/libevent_paxos,hemingcui/libevent_paxos,hemingcui/libevent_paxos,hemingcui/libevent_paxos,hemingcui/libevent_paxos,hemingcui/libevent_paxos,hemingcui/libevent_paxos