Ubuntu 12.04 中的 Socket.io 错误

Posted 2023-04-18

【中文标题】Ubuntu 12.04 中的 Socket.io 错误

【英文标题】：Socket.io error in Ubuntu 12.04

【发布时间】：2015-01-09 18:16:38

【问题描述】：

我刚刚将 node.js、npm 和 mongodb 安装到了新的 Ubuntu 12.04 服务器上。当我尝试打开我的网站时，我收到了这个错误：

/home/proj/node_modules/socket.io/node_modules/engine.io/node_modules/engine.io-parser/lib/index.js:402
        return doneCallback(null, Buffer.concat([sizeBuffer, stringToBuffer(pa
                                         ^
TypeError: Object function Buffer(subject, encoding, offset) 
  if (!(this instanceof Buffer)) 
    return new Buffer(subject, encoding, offset);
  

  var type;

  // Are we slicing?
  if (typeof offset === 'number') 
    this.length = coerce(encoding);
    this.parent = subject;
    this.offset = offset;
   else 
    // Find the length
    switch (type = typeof subject) 
      case 'number':
        this.length = coerce(subject);
        break;

      case 'string':
        this.length = Buffer.byteLength(subject, encoding);
        break;

      case 'object': // Assume object is an array
        this.length = coerce(subject.length);
        break;

      default:
        throw new Error('First argument needs to be a number, ' +
                        'array or string.');
    

    if (this.length > Buffer.poolSize) 
      // Big buffer, just alloc one.
      this.parent = new SlowBuffer(this.length);
      this.offset = 0;

     else 
      // Small buffer.
      if (!pool || pool.length - pool.used < this.length) allocPool();
      this.parent = pool;
      this.offset = pool.used;
      pool.used += this.length;
    

    // Treat array-ish objects as a byte array.
    if (isArrayIsh(subject)) 
      for (var i = 0; i < this.length; i++) 
        this.parent[i + this.offset] = subject[i];
      
     else if (type == 'string') 
      // We are a string
      this.length = this.write(subject, 0, encoding);
    
  

  SlowBuffer.makeFastBuffer(this.parent, this, this.offset, this.length);
 has no method 'concat'
    at /home/proj/node_modules/socket.io/node_modules/engine.io/node_modules/engine.io-parser/lib/index.js:402:42

这可能是什么原因？在 localhost 中一切正常。

【参考方案1】：

Buffer.concat 仅在 Node 0.8 中受支持。您需要将 Node 升级到最新版本。 Ubuntu 12.04 只提供 Node 0.6

要升级，可以运行以下命令

$ npm install -g n
$ n stable

这会将最新的节点安装到 /usr/local/bin。

您可以使用运行您的节点应用程序

$ /usr/local/bin/node path-to-your-node-app

在https://github.com/tj/n阅读更多关于节点二进制管理的信息，它可以帮助您管理多节点二进制安装。