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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - 092socket.mu</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="none">
<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
* { font-size: 12pt; font-size: 1em; }
.muData { color: #ffff00; }
.muControl { color: #c0a020; }
.Delimiter { color: #800080; }
.Comment { color: #9090ff; }
.Constant { color: #00a0a0; }
.Special { color: #c00000; }
.muRecipe { color: #ff8700; }
.muScenario { color: #00af00; }
-->
</style>
<script type='text/javascript'>
<!--
-->
</script>
</head>
<body>
<pre id='vimCodeElement'>
<span class="Comment"># Wrappers around socket primitives that are easier to test.</span>
<span class="Comment"># To test server operations, just run a real client against localhost.</span>
<span class="muScenario">scenario</span> example-server-test [
<span class="Constant">local-scope</span>
<span class="Comment"># test server without a fake on a random (real) port</span>
<span class="Comment"># that way repeatedly running the test will give ports time to timeout and</span>
<span class="Comment"># close before reusing them</span>
make-random-nondeterministic
port:num <span class="Special"><-</span> random-in-range <span class="Constant">0/real-random-numbers</span>,<span class="Constant"> 8000</span>,<span class="Constant"> 8100</span>
run [
socket:num <span class="Special"><-</span> $open-server-socket port
assert socket, <span class="Constant">[ </span>
<span class="Constant">F - example-server-test: $open-server-socket failed]</span>
handler-routine:number <span class="Special"><-</span> start-running serve-one-request socket, example-handler
]
source:&:source:char <span class="Special"><-</span> start-reading-from-network <span class="Constant">0/real-resources</span>, <span class="Constant">[localhost/]</span>, port
response:text <span class="Special"><-</span> drain source
10:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *response
memory-should-contain [
10:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span>
]
socket <span class="Special"><-</span> $close-socket socket
]
<span class="Comment"># helper just for this scenario</span>
<span class="muRecipe">def</span> example-handler query:text<span class="muRecipe"> -> </span>response:text [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="muControl">reply</span> <span class="Constant">[abc]</span>
]
<span class="Comment"># To test client operations, use `assume-resources` with a filename that</span>
<span class="Comment"># begins with a hostname. (Filenames starting with '/' are assumed to be</span>
<span class="Comment"># local.)</span>
<span class="muScenario">scenario</span> example-client-test [
<span class="Constant">local-scope</span>
assume-resources [
<span class="Constant">[example.com/]</span> <span class="Special"><-</span> [
<span class="Constant"> |abc|</span>
]
]
run [
source:&:source:char <span class="Special"><-</span> start-reading-from-network resources, <span class="Constant">[example.com/]</span>
]
contents:text <span class="Special"><-</span> drain source
10:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *contents
memory-should-contain [
10:array:character <span class="Special"><-</span> <span class="Constant">[abc</span>
<span class="Constant">]</span>
]
]
<span class="muData">type</span> request-handler = (recipe text<span class="muRecipe"> -> </span>text)
<span class="muRecipe">def</span> serve-one-request socket:num, request-handler:request-handler<span class="muRecipe"> -> </span>socket:num [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
session:num <span class="Special"><-</span> $accept socket
assert session, <span class="Constant">[ </span>
<span class="Constant">F - example-server-test: $accept failed]</span>
contents:&:source:char, sink:&:sink:char <span class="Special"><-</span> new-channel<span class="Constant"> 30</span>
start-running receive-from-socket session, sink
query:text <span class="Special"><-</span> drain contents
response:text <span class="Special"><-</span> call request-handler, query
write-to-socket session, response
session <span class="Special"><-</span> $close-socket session
]
<span class="muRecipe">def</span> start-reading-from-network resources:&:resources, uri:text<span class="muRecipe"> -> </span>contents:&:source:char [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="Delimiter">{</span>
port:num, port-found?:boolean <span class="Special"><-</span> <span class="Constant">next-ingredient</span>
<span class="muControl">break-if</span> port-found?
port <span class="Special"><-</span> copy <span class="Constant">80/http-port</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> resources
<span class="Comment"># fake network</span>
contents <span class="Special"><-</span> start-reading-from-fake-resources resources, uri
<span class="muControl">return</span>
<span class="Delimiter">}</span>
<span class="Comment"># real network</span>
host:text, path:text <span class="Special"><-</span> split-at uri, <span class="Constant">47/slash</span>
socket:num <span class="Special"><-</span> $open-client-socket host, port
assert socket, <span class="Constant">[contents]</span>
req:text <span class="Special"><-</span> interpolate <span class="Constant">[GET _ HTTP/1.1]</span>, path
request-socket socket, req
contents:&:source:char, sink:&:sink:char <span class="Special"><-</span> new-channel<span class="Constant"> 10000</span>
start-running receive-from-client-socket-and-close socket, sink
]
<span class="muRecipe">def</span> request-socket socket:num, s:text<span class="muRecipe"> -> </span>socket:num [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
write-to-socket socket, s
$write-to-socket socket, <span class="Constant">13/cr</span>
$write-to-socket socket, <span class="Constant">10/lf</span>
<span class="Comment"># empty line to delimit request</span>
$write-to-socket socket, <span class="Constant">13/cr</span>
$write-to-socket socket, <span class="Constant">10/lf</span>
]
<span class="muRecipe">def</span> receive-from-socket socket:num, sink:&:sink:char<span class="muRecipe"> -> </span>sink:&:sink:char, socket:num [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="Delimiter">{</span>
<span class="Constant"> +next-attempt</span>
c:char, found?:bool, eof?:bool, error:num <span class="Special"><-</span> $read-from-socket socket
<span class="muControl">break-if</span> eof?
<span class="muControl">break-if</span> error
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> found?
sink <span class="Special"><-</span> write sink, c
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> found?
switch
<span class="Delimiter">}</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
sink <span class="Special"><-</span> close sink
]
<span class="muRecipe">def</span> receive-from-client-socket-and-close socket:num, sink:&:sink:char<span class="muRecipe"> -> </span>sink:&:sink:char, socket:num [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
sink <span class="Special"><-</span> receive-from-socket socket, sink
socket <span class="Special"><-</span> $close-socket socket
]
<span class="muRecipe">def</span> write-to-socket socket:num, s:text [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
len:num <span class="Special"><-</span> length *s
i:num <span class="Special"><-</span> copy<span class="Constant"> 0</span>
<span class="Delimiter">{</span>
done?:bool <span class="Special"><-</span> greater-or-equal i, len
<span class="muControl">break-if</span> done?
c:char <span class="Special"><-</span> index *s, i
$write-to-socket socket, c
i <span class="Special"><-</span> add i,<span class="Constant"> 1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="Comment"># like split-first, but don't eat the delimiter</span>
<span class="muRecipe">def</span> split-at text:text, delim:char<span class="muRecipe"> -> </span>x:text, y:text [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="Comment"># empty text? return empty texts</span>
len:num <span class="Special"><-</span> length *text
<span class="Delimiter">{</span>
empty?:bool <span class="Special"><-</span> equal len,<span class="Constant"> 0</span>
<span class="muControl">break-unless</span> empty?
x:text <span class="Special"><-</span> new <span class="Constant">[]</span>
y:text <span class="Special"><-</span> new <span class="Constant">[]</span>
<span class="muControl">return</span>
<span class="Delimiter">}</span>
idx:num <span class="Special"><-</span> find-next text, delim,<span class="Constant"> 0</span>
x:text <span class="Special"><-</span> copy-range text,<span class="Constant"> 0</span>, idx
y:text <span class="Special"><-</span> copy-range text, idx, len
]
<span class="muScenario">scenario</span> text-split-at [
<span class="Constant">local-scope</span>
x:text <span class="Special"><-</span> new <span class="Constant">[a/b]</span>
run [
y:text, z:text <span class="Special"><-</span> split-at x, <span class="Constant">47/slash</span>
10:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *y
20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *z
]
memory-should-contain [
10:array:character <span class="Special"><-</span> <span class="Constant">[a]</span>
20:array:character <span class="Special"><-</span> <span class="Constant">[/b]</span>
]
]
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|