type net/http.checkConnErrorWriter

3 uses

	net/http (current package)
		server.go#L1888: 	c.bufw = newBufioWriterSize(checkConnErrorWriter{c}, 4<<10)
		server.go#L3571: type checkConnErrorWriter struct {
		server.go#L3575: func (w checkConnErrorWriter) Write(p []byte) (n int, err error) {