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
|
<!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 Ranch 2.0 to Ranch 2.1</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 Ranch 2.0 to Ranch 2.1</span></h1>
<p>Ranch 2.1 adds counters and alarms.</p>
<p>The <a href="https://github.com/juhlig/prometheus_ranch">Prometheus collector</a> was updated to include accepted/terminated connections metrics.</p>
<p>Ranch 2.1 is compatible with Erlang/OTP 22.0 onward. Support for Erlang/OTP 21 has been removed.</p>
<h2 id="_features_added">Features added</h2>
<ul><li>Metrics are now provided by <code>ranch:info/0,1</code>. Currently includes accepted/terminated connection counts per connection supervisor.
</li>
<li>Alarms can now be configured. The only alarm currently available is <code>num_connections</code>. When the number of connections goes over a configurable treshold Ranch will call the given callback. This can be used to programmatically shut down idle connections to make up space for new connections, for example.
</li>
<li>A <code>post_listen</code> callback option has been added. It receives sockets immediately after the <code>Transport:listen/1</code> call. It can be used for some additional initialization of the socket, such as setting file permissions on Unix domain sockets.
</li>
<li>It is now possible to use TLS-PSK authentication without having to specify a default certificate for TLS < 1.3.
</li>
</ul>
<h2 id="_experimental_features_added">Experimental features added</h2>
<ul><li>The <code>inet_backend</code> option is now properly handled and tested for TCP listeners. This allows using the experimental <code>socket</code> backend. The <code>socket</code> backend is now tested with Ranch. Note that there are known issues and Windows support is not currently implemented.
</li>
</ul>
<h2 id="_changed_behaviors">Changed behaviors</h2>
<ul><li>Ranch will now remove unsupported SSL/TLS options where applicable. A warning will be logged when this happens. Options are only removed when they are not compatible with the selected TLS version and leaving them would prevent the listener from starting.
<p>The following options are removed when using TLS 1.1, 1.2 or 1.3: <code>beast_mitigation</code> and <code>padding_check</code>.</p>
<p>The following options are removed when using TLS 1.3 exclusively: <code>client_renegotiation</code>, <code>next_protocols_advertised</code>, <code>psk_identity</code>, <code>reuse_session</code>, <code>reuse_sessions</code>, <code>secure_renegotiate</code> and <code>user_lookup_fun</code>.</p>
</li>
</ul>
<h2 id="_added_functions">Added functions</h2>
<ul><li>The function <code>ranch_proxy_header:to_connection_info/1</code> converts PROXY protocol information to the same format as <code>ssl:connection_information/1</code>. Because there is little overlap only the <code>protocol</code>, <code>selected_cipher_suite</code> and <code>sni_hostname</code> will be available, however.
</li>
</ul>
<nav style="margin:1em 0">
<a style="float:left" href="https://ninenines.eu/docs/en/ranch/2.1/guide/internals/">
Internals
</a>
<a style="float:right" href="https://ninenines.eu/docs/en/ranch/2.1/guide/migrating_from_1.7/">
Migrating from Ranch 1.7+ to Ranch 2.0
</a>
</nav>
</div>
<div class="span3 sidecol">
<h3>
Ranch
2.1
User Guide
</h3>
<ul>
<li><a href="/docs/en/ranch/2.1/guide">User Guide</a></li>
<li><a href="/docs/en/ranch/2.1/manual">Function Reference</a></li>
</ul>
<h4 id="docs-nav">Navigation</h4>
<h4>Version select</h4>
<ul>
<li><a href="/docs/en/ranch/2.1/guide">2.1</a></li>
<li><a href="/docs/en/ranch/2.0/guide">2.0</a></li>
<li><a href="/docs/en/ranch/1.8/guide">1.8</a></li>
<li><a href="/docs/en/ranch/1.7/guide">1.7</a></li>
<li><a href="/docs/en/ranch/1.6/guide">1.6</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>
|
