go.talks/pkg/socket: consolidate writes that occur within a small window
go.talks/pkg/socket: consolidate writes that occur within a small window

R=golang-dev, kamil.kisiel
CC=golang-dev
https://codereview.appspot.com/12311043

d0f/go-zh.talks,bryanxu/go-zh.talks,webfd/go-zh.talks,webfd/go-zh.talks,d0f/go-zh.talks,webfd/go-zh.talks,bryanxu/go-zh.talks,bryanxu/go-zh.talks,d0f/go-zh.talks,d0f/go-zh.talks,d0f/go-zh.talks,d0f/go-zh.talks,webfd/go-zh.talks,bryanxu/go-zh.talks,bryanxu/go-zh.talks,bryanxu/go-zh.talks,webfd/go-zh.talks,webfd/go-zh.talks