                 'Server': 'nginx'
                 'Content-Length': data.length
                 'Content-Type': mime.lookup cacheFile
-                # 'Last-Modified': stats.mtime.toGMTString()
+                'Last-Modified': stats.mtime.toGMTString()
               res.end data
           # Enable retry for game api
           else

_ = require 'underscore'
caseNormalizer = require 'header-case-normalizer'
fs = Promise.promisifyAll require 'fs-extra'
request = Promise.promisifyAll require 'request'
requestAsync = Promise.promisify request, multiArgs: true
mime = require 'mime'
socks = require 'socks5-client'
SocksHttpAgent = require 'socks5-http-client/lib/Agent'

                else
                  self.emit 'network.error', [domain, pathname, requrl], response.statusCode
              catch e
                success = false
                error "Api failed: #{req.method} #{req.url} #{e.toString()}"
                self.emit 'network.error.retry', [domain, pathname, requrl], i + 1 if i < retries
              if success || !isKancolleGameApi pathname
