converting "send: resource vanished (Broken pipe)" to ConnectionClosedByPeer. (#421)
converting "send: resource vanished (Broken pipe)" to ConnectionClosedByPeer. (#421)

urbanslug/wai,yesodweb/wai,utdemir/wai,urbanslug/wai,tolysz/wai,tolysz/wai,urbanslug/wai,frontrowed/wai,soenkehahn/wai,rgrinberg/wai,iquiw/wai,coypoop/wai,dylex/wai,creichert/wai,erikd/wai,frontrowed/wai,frontrowed/wai,soenkehahn/wai,sordina/wai,soenkehahn/wai,coypoop/wai,sordina/wai,iquiw/wai,rgrinberg/wai,utdemir/wai,erikd/wai,rgrinberg/wai,kazu-yamamoto/wai,frontrowed/wai,tolysz/wai,erikd/wai,utdemir/wai,awpr/wai,urbanslug/wai,coypoop/wai,dylex/wai,utdemir/wai,rgrinberg/wai,tolysz/wai,awpr/wai,dylex/wai,awpr/wai,soenkehahn/wai,kazu-yamamoto/wai,iquiw/wai,erikd/wai,creichert/wai,sordina/wai,awpr/wai,sordina/wai,dylex/wai,yesodweb/wai,coypoop/wai,rgrinberg/wai,iquiw/wai