A base class for tcp client with basic functions. 

A base class for tcp client with basic functions

fengmk2

gxcsoccer

coderhaoxin

shaoshuai0102

tcp-base

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  * feat: add heartbeat timeout server host

  * fix: use heartbeat logic to handle that connection stuck in CLOSE_WAIT status (#3)

  * fix: callback exception should not crash tcp-base (#2)

   * A base class for tcp client with basic functions

   *   - {Number} headerLength - length of the packet header, this field is optional,

   *                             but if you not provider, you must override getHeader method

   *   - {Boolean} [noDelay] - whether use the Nagle algorithm or not，defaults to true

   *   - {Number} [concurrent] - the number of concurrent packet, defaults to zero, means no limit

   *   - {Number} [responseTimeout] - limit the maximum time for waiting a response

   *   - {Number} [reConnectTimes] - the maximum number of times the client will automatically try to

   *                                 reconnect to the remote server if the connection is dropped

   *   - {Number} [reConnectInterval] - the auto-reconnect interval, defaults to 1s

   *   - {Logger} [logger] - the logger client

    this.options = Object.assign({}, defaultOptions, options);

    assert(this.options.host, 'options.host is required');

    assert(this.options.port, 'options.port is required');

      assert(this.heartBeatPacket, 'heartBeatPacket getter must be implemented if needHeartbeat');

    this._reConnectTimes = this.options.reConnectTimes;

    this[addressKey] = this.options.host + ':' + this.options.port;

    return this.read(this.options.headerLength);

  /* eslint-disable valid-jsdoc, no-unused-vars */

   * @param {Buffer} header - header data

   * @property {Buffer} TCPBase#heartBeatPacket

      const interval = this.options.heartbeatInterval;

      let maxIdleTime = this.options.maxIdleTime;

      if (!maxIdleTime || maxIdleTime < interval * 2) {

      this._heartbeatTimer = setInterval(() => {

        const duration = this._lastHeartbeatTime - this._lastReceiveDataTime;

        if (this._lastReceiveDataTime && duration > this.options.heartbeatInterval) {

        if (this._lastReceiveDataTime && duration > maxIdleTime) {

          const err = new Error(`server ${this[addressKey]} no response in ${duration}ms, maybe the socket is end on the other side.`);

          err.name = 'ServerNoResponseError';

        if (this._invokes.size > 0 || !this.isOK) {

        this._lastHeartbeatTime = Date.now();

      }, this.options.heartbeatInterval);

  "description": "A base class for tcp client with basic functions",

    "lint": "eslint --ext .js lib test example",

    "test": "npm run lint && npm run test-local",

    "ci": "npm run lint -- --fix && npm run cov"

    "cov": "TEST_TIMEOUT=20000 egg-bin cov",

    "url": "git+https://github.com/node-modules/tcp-base.git"

  "author": "gxcsoccer <gxcsoccer@126.com>",

    "url": "https://github.com/node-modules/tcp-base/issues"

  "homepage": "https://github.com/node-modules/tcp-base#readme",


		1.1.1 / 2017-08-11
		==================

		* fix: add max idle time logic (#8)

		1.1.0 / 2016-11-30
		@@ -3,0 +8,0 @@ ==================

		{
		"name": "tcp-base",
		"version": "1.1.0",
		"version": "1.1.1",
		"description": "A base class for tcp client with basic functions",
		@@ -10,7 +10,9 @@ "main": "lib/base.js",
		"scripts": {
		"lint": "eslint --ext .js lib test example",
		"autod": "autod",
		"lint": "eslint --ext .js .",
		"test": "npm run lint && npm run test-local",
		"test-local": "egg-bin test",
		"cov": "egg-bin cov",
		"ci": "npm run lint -- --fix && npm run cov"
		"cov": "TEST_TIMEOUT=20000 egg-bin cov",
		"ci": "npm run lint && npm run cov",
		"contributors": "contributors"
		},
		@@ -37,15 +39,18 @@ "repository": {
		"devDependencies": {
		"egg-bin": "1",
		"egg-ci": "1",
		"eslint": "3",
		"eslint-config-egg": "3",
		"mm": "2",
		"npminstall": "2",
		"pedding": "1",
		"should": "11"
		"autod": "^2.9.0",
		"await-event": "^2.1.0",
		"contributors": "^0.5.1",
		"egg-bin": "^1.11.1",
		"egg-ci": "^1.8.0",
		"eslint": "^4.4.1",
		"eslint-config-egg": "^5.0.0",
		"mm": "^2.1.0",
		"mz-modules": "^1.0.0",
		"pedding": "^1.1.0",
		"webstorm-disable-index": "^1.2.0"
		},
		"dependencies": {
		"is-type-of": "^1.0.0",
		"is-type-of": "^1.1.0",
		"sdk-base": "^2.0.1"
		}
		}

Improved metrics

Worsened metrics

Dependency changes

		@@ -409,5 +409,10 @@ 'use strict';
		if (this.options.needHeartbeat) {
		const interval = this.options.heartbeatInterval;
		let maxIdleTime = this.options.maxIdleTime;
		if (!maxIdleTime \|\| maxIdleTime < interval * 2) {
		maxIdleTime = interval * 2;
		}
		this._heartbeatTimer = setInterval(() => {
		const duration = this._lastHeartbeatTime - this._lastReceiveDataTime;
		if (this._lastReceiveDataTime && duration > this.options.heartbeatInterval) {
		if (this._lastReceiveDataTime && duration > maxIdleTime) {
		const err = new Error(`server ${this[addressKey]} no response in ${duration}ms, maybe the socket is end on the other side.`);
		@@ -424,3 +429,3 @@ err.name = 'ServerNoResponseError';
		this.sendHeartBeat();
		}, this.options.heartbeatInterval);
		}, interval);
		}
		@@ -427,0 +432,0 @@ }