reduced connection delay

Ignore-this: dc47fb1476a996aeb9e8332c6a62609a

ping is now sent immediately after DH session is created.
This reduces delay between connecting and connected states.

darcs-hash:20131103231148-c21fe-354ff4311d42848f7094fe6477babdf18fd61199
reduced threshold for disconnect

Ignore-this: f133cc43aea12175fbc75f2cc5789bb4

Now that we have reconnect I reduced the threshold for not recieving
a ping for a connection to roughly 9 seconds instead of 30ish.

darcs-hash:20131103231250-c21fe-e67958fcb0f5e8cbc361e81ff7a2df5f3c143bec