blob: 5e12de185bd7df5c608e49cd9e49fa9379397c0e (
plain) (
blame)
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
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="Loïc Hoguin based on a design from (Soft10) Pol Cámara">
<title>Nine Nines: Migrating from Cowboy 2.3 to 2.4</title>
<link href='https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic' rel='stylesheet' type='text/css'>
<link href="/css/99s.css?r=7" rel="stylesheet">
<link rel="shortcut icon" href="/img/ico/favicon.ico">
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="/img/ico/apple-touch-icon-114.png">
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="/img/ico/apple-touch-icon-72.png">
<link rel="apple-touch-icon-precomposed" href="/img/ico/apple-touch-icon-57.png">
</head>
<body class="">
<header id="page-head">
<div id="topbar" class="container">
<div class="row">
<div class="span2">
<h1 id="logo"><a href="/" title="99s">99s</a></h1>
</div>
<div class="span10">
<div id="side-header">
<nav>
<ul>
<li><a title="Hear my thoughts" href="/articles">Articles</a></li>
<li><a title="Watch my talks" href="/talks">Talks</a></li>
<li class="active"><a title="Read the docs" href="/docs">Documentation</a></li>
<li><a title="Request my services" href="/services">Consulting & Training</a></li>
</ul>
</nav>
<ul id="social">
<li>
<a href="https://github.com/ninenines" title="Check my Github repositories"><img src="/img/ico_github.png" data-hover="/img/ico_github_alt.png" alt="Github"></a>
</li>
<li>
<a title="Contact me" href="mailto:[email protected]"><img src="/img/ico_mail.png" data-hover="/img/ico_mail_alt.png"></a>
</li>
</ul>
</div>
</div>
</div>
</div>
</header>
<div id="contents" class="two_col">
<div class="container">
<div class="row">
<div id="docs" class="span9 maincol">
<h1 class="lined-header"><span>Migrating from Cowboy 2.3 to 2.4</span></h1>
<p>Cowboy 2.4 focused on improving the HTTP/2 implementation. All existing tests from RFC7540 and the h2spec test suite now all pass. Numerous options have been added to control SETTINGS and related behavior. In addition experimental support for Websocket over HTTP/2 was added.</p>
<h2 id="_features_added">Features added</h2>
<ul><li>Add experimental support for Websocket over HTTP/2. You can use the <code>enable_connect_protocol</code> option to enable. It implements the following draft: <a href="https://tools.ietf.org/html/draft-ietf-httpbis-h2-websockets-01">https://tools.ietf.org/html/draft-ietf-httpbis-h2-websockets-01</a>
</li>
<li>Add options <code>max_decode_table_size</code> and <code>max_encode_table_size</code> to restrict the size of the HPACK compression dictionary.
</li>
<li>Add option <code>max_concurrent_streams</code> to restrict the number of HTTP/2 streams that can be opened concurrently.
</li>
<li>Add options <code>initial_connection_window_size</code> and <code>initial_stream_window_size</code> to restrict the size of the HTTP/2 request body buffers for the whole connection and per stream, respectively.
</li>
<li>Add options <code>max_frame_size_received</code> and <code>max_frame_size_sent</code> to restrict the size of HTTP/2 frames.
</li>
<li>Add option <code>settings_timeout</code> to reject clients that did not send a SETTINGS ack. Note that this currently may only occur at the beginning of the connection.
</li>
<li>Update Ranch to 1.5.0
</li>
<li>Update Cowlib to 2.3.0
</li>
</ul>
<h2 id="_bugs_fixed">Bugs fixed</h2>
<ul><li>Fix the END_STREAM flag for informational responses when using HTTP/2.
</li>
<li>Receive and ignore HTTP/2 request trailers if any for HTTP/2 requests. Request trailer information will be propagated to the user code in a future release.
</li>
<li>Reject WINDOW_UPDATE frames that are sent after the client sent an RST_STREAM. Note that Cowboy will not keep state information about terminated streams forever and so the behavior might differ depending on when the stream was reset.
</li>
<li>Reject streams that depend on themselves. Note that Cowboy currently does not implement HTTP/2's priority mechanisms so this issue was harmless.
</li>
<li>Reject HTTP/2 requests where the body size is different than the content-length value. Note that due to how Cowboy works some requests might go through regardless, for example when the user code does not read the request body.
</li>
<li>Fix all existing test failures from RFC7540. This was mostly incorrect test cases or intermittent failures.
</li>
</ul>
<nav style="margin:1em 0">
<a style="float:left" href="https://ninenines.eu/docs/en/cowboy/2.7/guide/migrating_from_2.4/">
Migrating from Cowboy 2.4 to 2.5
</a>
<a style="float:right" href="https://ninenines.eu/docs/en/cowboy/2.7/guide/migrating_from_2.2/">
Migrating from Cowboy 2.2 to 2.3
</a>
</nav>
</div>
<div class="span3 sidecol">
<h3>
Cowboy
2.7
User Guide
</h3>
<ul>
<li><a href="/docs/en/cowboy/2.7/guide">User Guide</a></li>
<li><a href="/docs/en/cowboy/2.7/manual">Function Reference</a></li>
</ul>
<h4 id="docs-nav">Navigation</h4>
<h4>Version select</h4>
<ul>
<li><a href="/docs/en/cowboy/2.8/guide">2.8</a></li>
<li><a href="/docs/en/cowboy/2.7/guide">2.7</a></li>
<li><a href="/docs/en/cowboy/2.6/guide">2.6</a></li>
<li><a href="/docs/en/cowboy/2.5/guide">2.5</a></li>
<li><a href="/docs/en/cowboy/2.4/guide">2.4</a></li>
<li><a href="/docs/en/cowboy/2.3/guide">2.3</a></li>
</ul>
<h3 id="_like_my_work__donate">Like my work? Donate!</h3>
<p>Donate to Loïc Hoguin because his work on Cowboy, Ranch, Gun and Erlang.mk is fantastic:</p>
<form action="https://www.paypal.com/cgi-bin/webscr" method="post" style="display:inline">
<input type="hidden" name="cmd" value="_donations">
<input type="hidden" name="business" value="[email protected]">
<input type="hidden" name="lc" value="FR">
<input type="hidden" name="item_name" value="Loic Hoguin">
<input type="hidden" name="item_number" value="99s">
<input type="hidden" name="currency_code" value="EUR">
<input type="hidden" name="bn" value="PP-DonationsBF:btn_donate_LG.gif:NonHosted">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/fr_FR/i/scr/pixel.gif" width="1" height="1">
</form><p>Recurring payment options are also available via <a href="https://github.com/sponsors/essen">GitHub Sponsors</a>. These funds are used to cover the recurring expenses like food, dedicated servers or domain names.</p>
</div>
</div>
</div>
</div>
<footer>
<div class="container">
<div class="row">
<div class="span6">
<p id="scroll-top"><a href="#">↑ Scroll to top</a></p>
<nav>
<ul>
<li><a href="mailto:[email protected]" title="Contact us">Contact us</a></li><li><a href="https://github.com/ninenines/ninenines.github.io" title="Github repository">Contribute to this site</a></li>
</ul>
</nav>
</div>
<div class="span6 credits">
<p><img src="/img/footer_logo.png"></p>
<p>Copyright © Loïc Hoguin 2012-2018</p>
</div>
</div>
</div>
</footer>
<script src="/js/custom.js"></script>
</body>
</html>
|
