suppress some noisy errors

lib/api.js

@@ -17,10 +17,11 @@ module.exports.create = function (config) {
             .on('sessionClose', historyKeeper.sessionClose)
             .on('error', function (error, label, info) {
                 if (!error) { return; }
+                if (['EPIPE', 'ECONNRESET'].indexOf(error && error.code) !== -1) { return; }
                 /* labels:
                     SEND_MESSAGE_FAIL, SEND_MESSAGE_FAIL_2, FAIL_TO_DISCONNECT,
                     FAIL_TO_TERMINATE, HANDLE_CHANNEL_LEAVE, NETFLUX_BAD_MESSAGE,
-                    NETFLUX_WEBSOCKET_ERROR
+                    NETFLUX_WEBSOCKET_ERROR, NF_ENOENT
                 */
                 log.error(label, {
                     code: error.code,