我目前在使用 Redis 作为我的 NodeJS-Express 应用程序的 session 存储时遇到了一些问题。在某些时候，当我的应用程序正在等待 mongoDB promise 响应查询时，Redis session 突然使整个应用程序崩溃。

堆栈跟踪:

_http_server.js:192
    throw new RangeError(`Invalid status code: ${statusCode}`);
    ^

RangeError: Invalid status code: 0
    at ServerResponse.writeHead (_http_server.js:192:11)
    at ServerResponse.writeHead (/my_project_path/node_modules/on-headers/index.js:55:19)
    at ServerResponse.writeHead (/my_project_path/node_modules/on-headers/index.js:55:19)
    at ServerResponse.writeHead (/my_project_path/node_modules/on-headers/index.js:55:19)
    at ServerResponse._implicitHeader (_http_server.js:157:8)
    at ServerResponse.end (/my_project_path/node_modules/compression/index.js:102:14)
    at writeend (/my_project_path/node_modules/express-session/index.js:261:22)
    at Command.ontouch (/my_project_path/node_modules/express-session/index.js:348:11)
    at Command.callback (/my_project_path/node_modules/connect-redis/lib/connect-redis.js:248:10)
    at normal_reply (/my_project_path/node_modules/redis/index.js:721:21)
    at RedisClient.return_reply (/my_project_path/node_modules/redis/index.js:819:9)
    at JavascriptRedisParser.returnReply (/my_project_path/node_modules/redis/index.js:192:18)
    at JavascriptRedisParser.execute (/my_project_path/node_modules/redis-parser/lib/parser.js:574:12)
    at Socket.<anonymous> (/my_project_path/node_modules/redis/index.js:274:27)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at readableAddChunk (_stream_readable.js:176:18)
    at Socket.Readable.push (_stream_readable.js:134:10)
    at TCP.onread (net.js:547:20)

我尝试了很多方法来拦截错误，但无济于事:它发生在我尝试的任何钩子(Hook)或 console.log 之外。我尝试搜索 google 和 stackOverflow，但我只能找到一些人错误地在他们自己的代码中发送零状态，而 express<->redis session 没有任何错误。

快速配置代码

下面是我用来连接 Express 和 Redis 的代码:

const config = {...config data here...}
const session = require('express-session'); // version 1.15.3
const redis = require('redis'); // version 2.7.1, 
const RedisStore = require('connect-redis')(session); // version 3.3.0

const redisClient = redis.createClient({
  host: config.redisCache.host,
  port: config.redisCache.port,
  auth_pass: config.redisCache.token
});
redisClient.on("error", function (err) {
  // This is never called
  console.error("Redis Error " + JSON.stringify(err,null,2));
});

const sess = {
    resave: false, // don't save session if unmodified
    saveUninitialized: true,// don't create session until something stored,
    secret: config.secrets.session,
    store: new RedisStore({client:redisClient}),
    logErrors: function(_err) {
      // This is never called either
      console.error('Session error:' + JSON.stringify(_err,null,2)) 
    }
  };
app.use(session(sess));

请求的数据

下面是我发送的两个请求。一，来 self 的客户端 AngularJS 应用程序，使服务器崩溃。另一个收到回复就好了，以解决我的困惑。

// AngularJS request - crashes server with above stacktrace
{
  "host": "localhost:8082",
  "connection": "keep-alive",
  "content-length": "54",
  "origin": "http://localhost:8082",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36",
  "content-type": "application/json;charset=UTF-8",
  "accept": "application/json, text/plain, */*",
  "apptoken": "my_project_app_token",
  "referer": "http://localhost:8082/",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US,en;q=0.8,pt;q=0.6",
  "cookie": "connect.sid=s%3A14363a00-6285-11e7-8c76-9366761bb151.1Yg2b6gsLR8uJ7OCwLshZDacMbNC3XASI4%2BxVlRZ%2BXg"
}

// PostMan request, works just fine! (??)
{
  "host": "localhost:8082",
  "connection": "keep-alive",
  "content-length": "57",
  "postman-token": "86a514cd-7c19-85ee-d831-3b032849d430",
  "cache-control": "no-cache",
  "origin": "chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36",
  "apptoken": "my_project_app_token",
  "content-type": "application/json;charset=UTF-8",
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "accept-language": "en-US,en;q=0.8,pt;q=0.6",
  "cookie": "connect.sid=s%3AdUYMmy7KkcUF-tS9eHHbOTgNW4YrKx92.elK9FAP6kuZ3aazh8Z5X8m1lSZX%2BO4sIcex0LLD7JBQ"
}

// For completeness' sake, here is the POST request body
{"phone":"9999999999999","email":"xxxxxx@xxxx.xxx.xx"}

任何能为我指明解决此崩溃或进一步调查方法的想法都将非常受欢迎!

最佳答案

经过大量调试，我决定以最粗暴的方式更新我所有的 npm 包:

• 使用 rm -rf node_modules 删除了我所有的依赖项
• 使用我所有依赖项的确切版本更新了我的 package.json(没有“脱字符”或“大于”)
• 然后在干净的项目上 npm install。

应用程序的 session 再次开始工作! 希望这个问答可以帮助其他人解决这个奇怪的错误。

关于angularjs - 响应状态为零的 Express Redis session 崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44988517/