newbeely-nodejs/lib/components/tcpComponent/tcpclient.js

简单易用的轻量级nodejs服务框架. 框架简单到只有组件逻辑,不同的组件提供不同的服务,使用外部的配置文件(只有一个配置文件)方便的组合成一个完整的服务框架. 整个服务使用bearcat(网易开源的nodejs面向切面编程的轻量级框架(AOP))管理,极大的解耦组件间的耦合.(关于代码热更新后续开放).

var Net = require('net');
var Tls = require('tls');
var Logger = require('pomelo-logger').getLogger('newbeely', "tcpComponent");
var EventEmitter = require('events').EventEmitter;
var Util = require('util');
var Bearcat = require('bearcat');

var REQ_ID = 0;

function TcpClient(opts) {
    EventEmitter.call(this);

    this.opts = opts || {ssl: false, host: "localhost", port: 1990};

    this.socket = null;

    this.responses = {};
};
Util.inherits(TcpClient, EventEmitter);


/**
 *
 */
TcpClient.prototype.connect = function () {
    var _this = this;
    var socket = Net.connect(this.opts, function () {
        Logger.debug('connect to server by ' + _this.opts);
        _this.emit('connected');
    });
    this.socket = Bearcat.getBean('tcp-connection', socket, this.opts.protocol || "");
    this.socket.on('close', function () {
        Logger.debug("socket closed!");
    });
    this.socket.on('message', function (data) {
        if (_this.responses[data.reqid]) {
            _this.responses[data.reqid](data);
        }
    });
};

TcpClient.prototype.send = function (route, msg, cb) {
    if (this.socket) {
        this.socket.send(0, REQ_ID++, route, msg, "utf8");
        this.responses[REQ_ID - 1] = cb;
    }
};

module.exports = {
    id: "tcp-client",
    func: TcpClient,
    scope: "prototype",
    args: [
        {name: "opts", type: "Object"}
    ]
}