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
|
<!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: cowboy_router(3)</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=1" 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>cowboy_router(3)</span></h1>
<div class="sect1">
<h2 id="_name">Name</h2>
<div class="sectionbody">
<div class="paragraph"><p>cowboy_router - Router middleware</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">Description</h2>
<div class="sectionbody">
<div class="paragraph"><p>The <code>cowboy_router</code> middleware maps the requested host and
path to the handler to be used for processing the request.</p></div>
<div class="paragraph"><p>The router takes the <code>dispatch</code> rules as input from the
middleware environment. Dispatch rules are generated by
calling the
<a href="../cowboy_router.compile">cowboy_router:compile(3)</a>
function.</p></div>
<div class="paragraph"><p>When a route matches, the router sets the <code>handler</code> and
<code>handler_opts</code> middleware environment values containing
the handler module and initial state, respectively.</p></div>
<div class="paragraph"><p>The router will stop execution when no route matches.
It will send a 400 response if no host was found, and
a 404 response otherwise.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_exports">Exports</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<a href="../cowboy_router.compile">cowboy_router:compile(3)</a> - Compile routes to the resources
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_types">Types</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="_bindings">bindings()</h3>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000000">bindings</span></span>() <span style="color: #990000">::</span> #{<span style="font-weight: bold"><span style="color: #000080">atom</span></span>() <span style="color: #990000">=></span> <span style="font-weight: bold"><span style="color: #000000">any</span></span>()}</tt></pre></div></div>
<div class="paragraph"><p>Bindings found during routing.</p></div>
</div>
<div class="sect2">
<h3 id="_dispatch_rules">dispatch_rules()</h3>
<div class="paragraph"><p>Opaque type containing the compiled routes.</p></div>
</div>
<div class="sect2">
<h3 id="_routes">routes()</h3>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000000">routes</span></span>() <span style="color: #990000">=</span> [
{<span style="color: #009900">Host</span>, <span style="color: #009900">PathList</span>} |
{<span style="color: #009900">Host</span>, <span style="color: #009900">Fields</span>, <span style="color: #009900">PathList</span>}
]
<span style="color: #009900">PathList</span> <span style="color: #990000">::</span> [
{<span style="color: #009900">Path</span>, <span style="color: #009900">Handler</span>, <span style="color: #009900">InitialState</span>} |
{<span style="color: #009900">Path</span>, <span style="color: #009900">Fields</span>, <span style="color: #009900">Handler</span>, <span style="color: #009900">InitialState</span>}
]
<span style="color: #009900">Host</span> <span style="color: #990000">::</span> <span style="color: #FF6600">'_'</span> | <span style="font-weight: bold"><span style="color: #000000">iodata</span></span>()
<span style="color: #009900">Path</span> <span style="color: #990000">::</span> <span style="color: #FF6600">'_'</span> | <span style="font-weight: bold"><span style="color: #000000">iodata</span></span>()
<span style="color: #009900">Fields</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy:fields</span></span>()
<span style="color: #009900">Handler</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">module</span></span>()
<span style="color: #009900">InitialState</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">any</span></span>()</tt></pre></div></div>
<div class="paragraph"><p>Human readable list of routes to handlers.</p></div>
<div class="paragraph"><p>Cowboy uses this list to map hosts and paths, optionally
augmented with constraints applied to the bindings, to
handler modules.</p></div>
<div class="paragraph"><p>The syntax for routes is currently defined in the user guide.</p></div>
</div>
<div class="sect2">
<h3 id="_tokens">tokens()</h3>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000000">tokens</span></span>() <span style="color: #990000">::</span> [<span style="font-weight: bold"><span style="color: #000080">binary</span></span>()]</tt></pre></div></div>
<div class="paragraph"><p>List of <code>host_info</code> and <code>path_info</code> tokens that were found
using the <code>...</code> syntax.</p></div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">See also</h2>
<div class="sectionbody">
<div class="paragraph"><p><a href="..">cowboy(7)</a>,
<a href="../cowboy_req.binding">cowboy_req:binding(3)</a>,
<a href="../cowboy_req.bindings">cowboy_req:bindings(3)</a>,
<a href="../cowboy_req.host_info">cowboy_req:host_info(3)</a>,
<a href="../cowboy_req.path_info">cowboy_req:path_info(3)</a></p></div>
</div>
</div>
</div>
<div class="span3 sidecol">
<h3>
Cowboy
2.0
Function Reference
</h3>
<ul>
<li><a href="/docs/en/cowboy/2.0/guide">User Guide</a></li>
<li><a href="/docs/en/cowboy/2.0/manual">Function Reference</a></li>
</ul>
<h4 id="docs-nav">Navigation</h4>
<h4>Version select</h4>
<ul>
<li><a href="/docs/en/cowboy/2.4/manual">2.4</a></li>
<li><a href="/docs/en/cowboy/2.3/manual">2.3</a></li>
<li><a href="/docs/en/cowboy/2.2/manual">2.2</a></li>
<li><a href="/docs/en/cowboy/2.1/manual">2.1</a></li>
<li><a href="/docs/en/cowboy/2.0/manual">2.0</a></li>
<li><a href="/docs/en/cowboy/1.0/manual">1.0</a></li>
</ul>
</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>
|
