-
Notifications
You must be signed in to change notification settings - Fork 52
/
Copy pathchapter19.html
613 lines (259 loc) · 27.5 KB
/
chapter19.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
<!DOCTYPE HTML>
<html lang="zh-hans" >
<head>
<title>12.HTTP代理 · MPUSH开发文档</title>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<meta name="description" content="">
<meta name="generator" content="GitBook 3.2.0">
<meta name="author" content="夜色">
<link rel="stylesheet" href="gitbook/style.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-prism/prism.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-search/search.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-donate/plugin.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-tbfed-pagefooter/footer.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-navigator/plugin.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-splitter/splitter.css">
<link rel="stylesheet" href="gitbook/gitbook-plugin-fontsettings/website.css">
<meta name="HandheldFriendly" content="true"/>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="apple-touch-icon-precomposed" sizes="152x152" href="gitbook/images/apple-touch-icon-precomposed-152.png">
<link rel="shortcut icon" href="gitbook/images/favicon.ico" type="image/x-icon">
<link rel="next" href="chapter20.html" />
<link rel="prev" href="chapter18.html" />
</head>
<body>
<div class="book">
<div class="book-summary">
<div id="book-search-input" role="search">
<input type="text" placeholder="输入并搜索" />
</div>
<nav role="navigation">
<ul class="summary">
<li class="chapter " data-level="1.1" data-path="./">
<a href="./">
0.Introduction
</a>
</li>
<li class="chapter " data-level="1.2" data-path="chapter1.html">
<a href="chapter1.html">
1.系统架构
</a>
</li>
<li class="chapter " data-level="1.3" data-path="chapter2.html">
<a href="chapter2.html">
2.服务依赖关系
</a>
</li>
<li class="chapter " data-level="1.4" data-path="chapter3.html">
<a href="chapter3.html">
3.协议
</a>
</li>
<li class="chapter " data-level="1.5" data-path="chapter4.html">
<a href="chapter4.html">
4.主要流程
</a>
<ul class="articles">
<li class="chapter " data-level="1.5.1" data-path="chapter6.html">
<a href="chapter6.html">
4.1.密钥交换方案
</a>
</li>
<li class="chapter " data-level="1.5.2" data-path="chapter7.html">
<a href="chapter7.html">
4.2.握手及快速重连
</a>
</li>
<li class="chapter " data-level="1.5.3" data-path="chapter8.html">
<a href="chapter8.html">
4.3.绑定用户及路由发布
</a>
</li>
<li class="chapter " data-level="1.5.4" data-path="chapter9.html">
<a href="chapter9.html">
4.4.解绑用户
</a>
</li>
<li class="chapter " data-level="1.5.5" data-path="chapter10.html">
<a href="chapter10.html">
4.5.消息推送
</a>
</li>
<li class="chapter " data-level="1.5.6" data-path="chapter11.html">
<a href="chapter11.html">
4.6.Http代理
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.6" data-path="chapter12.html">
<a href="chapter12.html">
5.服务部署
</a>
</li>
<li class="chapter " data-level="1.7" data-path="chapter13.html">
<a href="chapter13.html">
6.源码测试
</a>
</li>
<li class="chapter " data-level="1.8" data-path="chapter14.html">
<a href="chapter14.html">
7.配置详解
</a>
</li>
<li class="chapter " data-level="1.9" data-path="chapter17.html">
<a href="chapter17.html">
8.Alloc实现
</a>
</li>
<li class="chapter " data-level="1.10" data-path="chapter15.html">
<a href="chapter15.html">
9.Android SDK
</a>
<ul class="articles">
<li class="chapter " data-level="1.10.1" data-path="chapter15.1.html">
<a href="chapter15.1.html">
9.1.SDK系统架构
</a>
</li>
<li class="chapter " data-level="1.10.2" data-path="chapter15.2.html">
<a href="chapter15.2.html">
9.2.MpushClient架构
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.11" data-path="chapter16.md">
<span>
10.IOS SDK
</a>
</li>
<li class="chapter " data-level="1.12" data-path="chapter18.html">
<a href="chapter18.html">
11.服务端SDK
</a>
</li>
<li class="chapter active" data-level="1.13" data-path="chapter19.html">
<a href="chapter19.html">
12.HTTP代理
</a>
</li>
<li class="chapter " data-level="1.14" data-path="chapter20.html">
<a href="chapter20.html">
13.Server源码分析
</a>
<ul class="articles">
<li class="chapter " data-level="1.14.1" data-path="chapter20.1.html">
<a href="chapter20.1.html">
13.1.模块依赖关系
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.15" data-path="chapter21.html">
<a href="chapter21.html">
14.SPI定制化
</a>
</li>
<li class="divider"></li>
<li>
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
本书使用 GitBook 发布
</a>
</li>
</ul>
</nav>
</div>
<div class="book-body">
<div class="body-inner">
<div class="book-header" role="navigation">
<!-- Title -->
<h1>
<i class="fa fa-circle-o-notch fa-spin"></i>
<a href="." >12.HTTP代理</a>
</h1>
</div>
<div class="page-wrapper" tabindex="-1" role="main">
<div class="page-inner">
<div id="book-search-results">
<div class="search-noresults">
<section class="normal markdown-section">
<h1 id="HTTP代理">HTTP代理</h1><h2 id="使用场景">1. 使用场景</h2><ul><li><p>问题</p><blockquote><p>前面有提到过http代理这个东西，但很多人不知道这个东西该怎么用，或者说有什么用？以及在什么场景下使用？</p></blockquote></li>
<li><p>移动APP通信场景分析</p><blockquote><p>从使用的链接情况来看，一般可以分为两大类：TCP长链接，HTTP短链接；长链接用于消息推送或IM等场景，HTTP用于业务数据的查询或修改。虽然不是所有的APP都需要IM功能，但大多应用都需要消息推送功能。为了推送消息，APP必须维持一根长链接，但大部分时间除了心跳这根链接上是没多少消息在传输的，特别是非IM类的APP，因为这类应用并没大量的消息要不停的推送，维持长链接只是为了消息的及时到达，这势必造成了很大的资源浪费！</p></blockquote></li>
<li><p>解决方案</p><blockquote><p>针对上述情况MPUSH提供了Http代理方案，目的一是充分利用push通道，而是提高数据传输效率节省电量，节省流量，提供比http更高的安全性。</p></blockquote></li>
<li><p>实现原理</p><blockquote><p>MPushClient 提供了一个叫<code>sendHttp</code>的方法，该方法用于把客户端原本要通过HTTP方式发送的请求，<strong>全部通过PUSH通道转发</strong>，实现整个链路的长链接化；通过这种方式应用大大减少Http短链接频繁的创建，不仅仅节省电量，经过测试证明请求时间比原来至少缩短一倍，而且MPush提供的还有数据压缩功能，对于比较大的数据还能大大节省流量(压缩率4-10倍)，更重要的是所有通过代理的数据都是加密后传输的，大大提高了安全性！</p></blockquote></li></ul>
<h2 id="使用方式">2. 使用方式</h2><ul><li><p>服务端</p><ol><li><p>修改<code>mpush.conf</code>增加<code>mp.http.proxy-enabled=true</code>启用http代理</p></li>
<li><p>修改<code>mpush.conf</code>增加<code>dns-mapping</code>配置，示例如下</p><pre><code class="lang-java">mp<span class="token punctuation">.</span>http<span class="token punctuation">.</span>dns<span class="token operator">-</span>mapping<span class="token operator">=</span><span class="token punctuation">{</span><span class="token comment" spellcheck="true">//域名映射外网地址转内部IP</span>
<span class="token string">"api.jituancaiyun.com"</span><span class="token operator">:</span><span class="token punctuation">[</span><span class="token string">"10.0.10.1:8080"</span><span class="token punctuation">,</span> <span class="token string">"10.0.10.2:8080"</span><span class="token punctuation">]</span>
<span class="token punctuation">}</span></code></pre>
<p>​</p><blockquote><p>说明：因为<code>mpush server</code>要做http代理转发，而客户端传过来的一般是域名比如<code>http://api.jituancaiyun.com/get/userInfo.json</code>为了不到公网上再绕一圈建议把mpush server 和业务服务(api.jituancaiyun.com)部署到同一个局域网，并增域名api.jituancaiyun.com到提供该服务的集群机器内网ip之间的一个映射，这样<code>mpush server</code>就可以通过局域网把请求转发到具体到业务服务，效率更高！</p></blockquote></li></ol>
</li></ul>
<ul><li><p>客户端</p><ol><li><p>设置<code>ClientConfig.setEnableHttpProxy(true)</code>来启用客户端代理。</p></li>
<li><p>通过<code>Client.sendHttp(HttpRequest request)</code>方法来发送请求。</p><blockquote><p>AndroidSDK通过<code>com.mpush.android.MPush#sendHttpProxy(HttpRequest request)</code>来发送比较合适。</p></blockquote></li></ol>
</li></ul>
<h2 id="流程分析">3. 流程分析</h2><h3 id="流程图">3.1. 流程图</h3><p><img src="MPush http代理.png"></p><h3 id="说明">3.2. 说明</h3><ol><li><code>Client</code>代表App业务比如查询用户信息的接口
</li>
<li><code>MPushApiProxy</code>是一个工具类用于负责处理当前请求是使用普通的HTTP还是使用MPush长链接通道，这个类在SDK中说不存在的，是我们公司内部的业务，实现起来也很简单，建议Android工程中增加这么一个角色，而不是到处直接去依赖Mpush的代码，方便以后解耦。
</li>
<li><code>MPushClient</code>这个SDK已经提供，用于把Http协议打包成mpush协议。
</li>
<li><code>HttpProxyHandler</code><strong>包括后面的几个组件都是服务端业务组件。</strong>用于接收客户端传过来的请求并反解为Http协议，然后通过DNSMapping找到域名对应的局域网IP，再通过内置的HttpClient，把请求转发给业务WEB服务，并把业务服务的返回值(HttpResponse)打包成MPush协议发送到客户端。
</li>
<li><code>DNSMapping</code>负责通过域名解析成局域网IP，并具有负载均衡以及简单的健康检查功能(针对所配置的WEB服务)
</li>
<li><code>HttpClient</code>目前使用的是用<code>Netty</code>实现的全异步的一个<code>HttpClient</code>，负责通过http的方式请求业务服务。
</li>
<li>Nginx是业务服务，也可以是Tomcat，<strong>特别需要建议的是链接超时时间配置长一些。</strong>
</li></ol>
<h3 id="补充">3.3. 补充</h3><p>为什么要这样实现？因为这样做对原有的业务系统侵入特别低，如果<code>MPushApiProxy</code>这个组件设计的好，对于最两边的业务组件/服务(Client,Nginx)，对请求方式应该是无感知的，这个角色是无法区分到底请求是通过普通的Http方式发送出去的还是通过长链接代理的方式发送的！！！</p><p><strong>另附上通过Http Proxy 实现双向通信交互图</strong></p><p><img src="MPush-HttpProxy实现双向通信.png"></p><footer class="page-footer"><span class="copyright">Copyright © ohun.com 2016 all right reserved，powered by Gitbook</span><span class="footer-modification">该文件修订时间：
2016-09-23 20:03:04
</span></footer>
<div id="anchors-navbar"><i class="fa fa-anchor"></i><ul><p><a href="#HTTP代理">HTTP代理</a></p><li><a href="#使用场景">1. 使用场景</a></li><li><a href="#使用方式">2. 使用方式</a></li><li><a href="#流程分析">3. 流程分析</a></li><ul><li><a href="#流程图">3.1. 流程图</a></li><li><a href="#说明">3.2. 说明</a></li><li><a href="#补充">3.3. 补充</a></li></ul></ul></div><a href="#使用场景" id="goTop"><i class="fa fa-arrow-up"></i></a>
</section>
</div>
<div class="search-results">
<div class="has-results">
<h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1>
<ul class="search-results-list"></ul>
</div>
<div class="no-results">
<h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1>
</div>
</div>
</div>
</div>
</div>
</div>
<a href="chapter18.html" class="navigation navigation-prev " aria-label="Previous page: 11.服务端SDK">
<i class="fa fa-angle-left"></i>
</a>
<a href="chapter20.html" class="navigation navigation-next " aria-label="Next page: 13.Server源码分析">
<i class="fa fa-angle-right"></i>
</a>
</div>
<script>
var gitbook = gitbook || [];
gitbook.push(function() {
gitbook.page.hasChanged({"page":{"title":"12.HTTP代理","level":"1.13","depth":1,"next":{"title":"13.Server源码分析","level":"1.14","depth":1,"path":"chapter20.md","ref":"chapter20.md","articles":[{"title":"13.1.模块依赖关系","level":"1.14.1","depth":2,"path":"chapter20.1.md","ref":"chapter20.1.md","articles":[]}]},"previous":{"title":"11.服务端SDK","level":"1.12","depth":1,"path":"chapter18.md","ref":"chapter18.md","articles":[]},"dir":"ltr"},"config":{"plugins":["prism","sharing","search","-highlight","-page-treeview","-anchorjs","baidu","donate","tbfed-pagefooter","navigator","duoshuo","editlink","splitter"],"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"pluginsConfig":{"tbfed-pagefooter":{"copyright":"Copyright © ohun.com 2016","modify_label":"该文件修订时间：","modify_format":"YYYY-MM-DD HH:mm:ss"},"prism":{},"editlink":{"label":"编辑本页","multilingual":false,"base":"https://github.com/mpusher/docs/tree/book"},"splitter":{},"search":{},"lunr":{"maxIndexSize":1000000,"ignoreSpecialCharacters":false},"duoshuo":{"short_name":"mpush","theme":"default"},"donate":{"alipay":"alipay.jpg","alipayText":"支付宝打赏","button":"赏","title":"","wechat":"wxpay.png","wechatText":"微信打赏"},"fontsettings":{"theme":"sepia","family":"sans","size":2},"navigator":{},"baidu":{"token":"74e8d02bb383b3d88072165c31989fb2"},"sharing":{"all":["facebook","google","twitter","weibo","instapaper"],"facebook":true,"google":false,"instapaper":false,"twitter":true,"vk":false,"weibo":false},"theme-default":{"styles":{"website":"styles/website.css","pdf":"styles/pdf.css","epub":"styles/epub.css","mobi":"styles/mobi.css","ebook":"styles/ebook.css","print":"styles/print.css"},"showLevel":false},"anchorjs":{"icon":"#","placement":"right","visible":"always","class":"custom-class another-one"}},"theme":"default","author":"夜色","pdf":{"pageNumbers":true,"fontSize":12,"fontFamily":"Arial","paperSize":"a4","chapterMark":"pagebreak","pageBreaksBefore":"/","margin":{"right":62,"left":62,"top":56,"bottom":56}},"structure":{"langs":"LANGS.md","readme":"README.md","glossary":"GLOSSARY.md","summary":"SUMMARY.md"},"variables":{},"title":"MPUSH开发文档","language":"zh-hans","gitbook":"*","description":"mpush开发手册"},"file":{"path":"chapter19.md","mtime":"2016-09-23T12:03:04.000Z","type":"markdown"},"gitbook":{"version":"3.2.0","time":"2016-10-26T16:14:58.733Z"},"basePath":".","book":{"language":""}});
});
</script>
</div>
<script src="gitbook/gitbook.js"></script>
<script src="gitbook/theme.js"></script>
<script src="gitbook/gitbook-plugin-sharing/buttons.js"></script>
<script src="gitbook/gitbook-plugin-search/search-engine.js"></script>
<script src="gitbook/gitbook-plugin-search/search.js"></script>
<script src="gitbook/gitbook-plugin-baidu/plugin.js"></script>
<script src="gitbook/gitbook-plugin-donate/plugin.js"></script>
<script src="gitbook/gitbook-plugin-duoshuo/duoshuo.js"></script>
<script src="gitbook/gitbook-plugin-editlink/plugin.js"></script>
<script src="gitbook/gitbook-plugin-splitter/splitter.js"></script>
<script src="gitbook/gitbook-plugin-lunr/lunr.min.js"></script>
<script src="gitbook/gitbook-plugin-lunr/search-lunr.js"></script>
<script src="gitbook/gitbook-plugin-fontsettings/fontsettings.js"></script>
</body>
</html>