242 lines
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242 lines
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<a href='https://github.com/akkartik/mu/blob/master/092socket.mu'>https://github.com/akkartik/mu/blob/master/092socket.mu</a>
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<pre id='vimCodeElement'>
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<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Wrappers around socket primitives that are easier to test.</span>
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<span id="L2" class="LineNr"> 2 </span>
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<span id="L3" class="LineNr"> 3 </span><span class="Comment"># To test server operations, just run a real client against localhost.</span>
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<span id="L4" class="LineNr"> 4 </span><span class="muScenario">scenario</span> example-server-test [
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<span id="L5" class="LineNr"> 5 </span> <span class="Constant">local-scope</span>
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<span id="L6" class="LineNr"> 6 </span> <span class="Comment"># test server without a fake on a random (real) port</span>
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<span id="L7" class="LineNr"> 7 </span> <span class="Comment"># that way repeatedly running the test will give ports time to timeout and</span>
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<span id="L8" class="LineNr"> 8 </span> <span class="Comment"># close before reusing them</span>
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<span id="L9" class="LineNr"> 9 </span> make-random-nondeterministic
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<span id="L10" class="LineNr"> 10 </span> port:num <span class="Special"><-</span> <a href='068random.mu.html#L58'>random-in-range</a><span class="Constant"> null/real-random-numbers, 8000</span>,<span class="Constant"> 8100</span>
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<span id="L11" class="LineNr"> 11 </span> run [
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<span id="L12" class="LineNr"> 12 </span> socket:num <span class="Special"><-</span> $open-server-socket port
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<span id="L13" class="LineNr"> 13 </span> assert socket, <span class="Constant">[ </span>
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<span id="L14" class="LineNr"> 14 </span><span class="Constant">F - example-server-test: $open-server-socket failed]</span>
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<span id="L15" class="LineNr"> 15 </span> handler-routine:number <span class="Special"><-</span> <span class="muControl">start-running</span> <a href='092socket.mu.html#L55'>serve-one-request</a> socket, <a href='092socket.mu.html#L26'>example-handler</a>
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<span id="L16" class="LineNr"> 16 </span> ]
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<span id="L17" class="LineNr"> 17 </span> <a href='075channel.mu.html#L36'>source</a>:&:<a href='075channel.mu.html#L36'>source</a>:char <span class="Special"><-</span> <a href='092socket.mu.html#L69'>start-reading-from-network</a><span class="Constant"> null/real-resources,</span> <span class="Constant">[localhost/]</span>, port
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<span id="L18" class="LineNr"> 18 </span> response:text <span class="Special"><-</span> <a href='075channel.mu.html#L499'>drain</a> <a href='075channel.mu.html#L36'>source</a>
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<span id="L19" class="LineNr"> 19 </span> 10:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *response
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<span id="L20" class="LineNr"> 20 </span> memory-should-contain [
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<span id="L21" class="LineNr"> 21 </span> 10:array:character <span class="Special"><-</span> <span class="Constant">[abc]</span>
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<span id="L22" class="LineNr"> 22 </span> ]
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<span id="L23" class="LineNr"> 23 </span> socket <span class="Special"><-</span> $close-socket socket
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<span id="L24" class="LineNr"> 24 </span>]
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<span id="L25" class="LineNr"> 25 </span><span class="Comment"># helper just for this scenario</span>
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<span id="L26" class="LineNr"> 26 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L26'>example-handler</a> query:text<span class="muRecipe"> -> </span>response:text [
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<span id="L27" class="LineNr"> 27 </span> <span class="Constant">local-scope</span>
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<span id="L28" class="LineNr"> 28 </span> <span class="Constant">load-inputs</span>
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<span id="L29" class="LineNr"> 29 </span> <span class="muControl"> return</span> <span class="Constant">[abc]</span>
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<span id="L30" class="LineNr"> 30 </span>]
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<span id="L31" class="LineNr"> 31 </span>
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<span id="L32" class="LineNr"> 32 </span><span class="Comment"># To test client operations, use 'assume-resources' with a filename that</span>
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<span id="L33" class="LineNr"> 33 </span><span class="Comment"># begins with a hostname. (Filenames starting with '/' are assumed to be</span>
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<span id="L34" class="LineNr"> 34 </span><span class="Comment"># local.)</span>
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<span id="L35" class="LineNr"> 35 </span><span class="muScenario">scenario</span> example-client-test [
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<span id="L36" class="LineNr"> 36 </span> <span class="Constant">local-scope</span>
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<span id="L37" class="LineNr"> 37 </span> assume-resources [
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<span id="L38" class="LineNr"> 38 </span> <span class="Constant">[example.com/]</span> <span class="Special"><-</span> [
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<span id="L39" class="LineNr"> 39 </span><span class="Constant"> |abc|</span>
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<span id="L40" class="LineNr"> 40 </span> ]
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<span id="L41" class="LineNr"> 41 </span> ]
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<span id="L42" class="LineNr"> 42 </span> run [
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<span id="L43" class="LineNr"> 43 </span> <a href='075channel.mu.html#L36'>source</a>:&:<a href='075channel.mu.html#L36'>source</a>:char <span class="Special"><-</span> <a href='092socket.mu.html#L69'>start-reading-from-network</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[example.com/]</span>
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<span id="L44" class="LineNr"> 44 </span> ]
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<span id="L45" class="LineNr"> 45 </span> contents:text <span class="Special"><-</span> <a href='075channel.mu.html#L499'>drain</a> <a href='075channel.mu.html#L36'>source</a>
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<span id="L46" class="LineNr"> 46 </span> 10:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *contents
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<span id="L47" class="LineNr"> 47 </span> memory-should-contain [
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<span id="L48" class="LineNr"> 48 </span> 10:array:character <span class="Special"><-</span> <span class="Constant">[abc</span>
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<span id="L49" class="LineNr"> 49 </span><span class="Constant">]</span>
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<span id="L50" class="LineNr"> 50 </span> ]
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<span id="L51" class="LineNr"> 51 </span>]
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<span id="L52" class="LineNr"> 52 </span>
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<span id="L53" class="LineNr"> 53 </span><span class="muData">type</span> <a href='092socket.mu.html#L53'>request-handler</a> = (recipe text<span class="muRecipe"> -> </span>text)
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<span id="L54" class="LineNr"> 54 </span>
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<span id="L55" class="LineNr"> 55 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L55'>serve-one-request</a> socket:num, <a href='092socket.mu.html#L53'>request-handler</a>:<a href='092socket.mu.html#L53'>request-handler</a><span class="muRecipe"> -> </span>socket:num [
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<span id="L56" class="LineNr"> 56 </span> <span class="Constant">local-scope</span>
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<span id="L57" class="LineNr"> 57 </span> <span class="Constant">load-inputs</span>
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<span id="L58" class="LineNr"> 58 </span> session:num <span class="Special"><-</span> $accept socket
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<span id="L59" class="LineNr"> 59 </span> assert session, <span class="Constant">[ </span>
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<span id="L60" class="LineNr"> 60 </span><span class="Constant">F - example-server-test: $accept failed]</span>
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<span id="L61" class="LineNr"> 61 </span> contents:&:<a href='075channel.mu.html#L36'>source</a>:char, <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char <span class="Special"><-</span> <a href='075channel.mu.html#L44'>new-channel</a><span class="Constant"> 30</span>
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<span id="L62" class="LineNr"> 62 </span> <span class="muControl">start-running</span> <a href='092socket.mu.html#L104'>receive-from-socket</a> session, <a href='075channel.mu.html#L40'>sink</a>
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<span id="L63" class="LineNr"> 63 </span> query:text <span class="Special"><-</span> <a href='075channel.mu.html#L499'>drain</a> contents
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<span id="L64" class="LineNr"> 64 </span> response:text <span class="Special"><-</span> call <a href='092socket.mu.html#L53'>request-handler</a>, query
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<span id="L65" class="LineNr"> 65 </span> <a href='092socket.mu.html#L132'>write-to-socket</a> session, response
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<span id="L66" class="LineNr"> 66 </span> session <span class="Special"><-</span> $close-socket session
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<span id="L67" class="LineNr"> 67 </span>]
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<span id="L68" class="LineNr"> 68 </span>
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<span id="L69" class="LineNr"> 69 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L69'>start-reading-from-network</a> <a href='088file.mu.html#L11'>resources</a>:&:<a href='088file.mu.html#L11'>resources</a>, uri:text<span class="muRecipe"> -> </span>contents:&:<a href='075channel.mu.html#L36'>source</a>:char [
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<span id="L70" class="LineNr"> 70 </span> <span class="Constant">local-scope</span>
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<span id="L71" class="LineNr"> 71 </span> <span class="Constant">load-inputs</span>
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<span id="L72" class="LineNr"> 72 </span> <span class="Delimiter">{</span>
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<span id="L73" class="LineNr"> 73 </span> port:num, port-found?:boolean <span class="Special"><-</span> <span class="Constant">next-input</span>
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<span id="L74" class="LineNr"> 74 </span> <span class="muControl">break-if</span> port-found?
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<span id="L75" class="LineNr"> 75 </span> port <span class="Special"><-</span> copy <span class="Constant">80/http-port</span>
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<span id="L76" class="LineNr"> 76 </span> <span class="Delimiter">}</span>
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<span id="L77" class="LineNr"> 77 </span> <span class="Delimiter">{</span>
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<span id="L78" class="LineNr"> 78 </span> <span class="muControl">break-unless</span> <a href='088file.mu.html#L11'>resources</a>
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<span id="L79" class="LineNr"> 79 </span> <span class="Comment"># fake network</span>
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<span id="L80" class="LineNr"> 80 </span> contents <span class="Special"><-</span> <a href='088file.mu.html#L53'>start-reading-from-fake-resource</a> <a href='088file.mu.html#L11'>resources</a>, uri
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<span id="L81" class="LineNr"> 81 </span> <span class="muControl"> return</span>
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<span id="L82" class="LineNr"> 82 </span> <span class="Delimiter">}</span>
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<span id="L83" class="LineNr"> 83 </span> <span class="Comment"># real network</span>
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<span id="L84" class="LineNr"> 84 </span> host:text, path:text <span class="Special"><-</span> <a href='092socket.mu.html#L148'>split-at</a> uri, <span class="Constant">47/slash</span>
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<span id="L85" class="LineNr"> 85 </span> socket:num <span class="Special"><-</span> $open-client-socket host, port
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<span id="L86" class="LineNr"> 86 </span> assert socket, <span class="Constant">[contents]</span>
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<span id="L87" class="LineNr"> 87 </span> req:text <span class="Special"><-</span> <a href='061text.mu.html#L520'>interpolate</a> <span class="Constant">[GET _ HTTP/1.1]</span>, path
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<span id="L88" class="LineNr"> 88 </span> <a href='092socket.mu.html#L93'>request-socket</a> socket, req
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<span id="L89" class="LineNr"> 89 </span> contents:&:<a href='075channel.mu.html#L36'>source</a>:char, <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char <span class="Special"><-</span> <a href='075channel.mu.html#L44'>new-channel</a><span class="Constant"> 10000</span>
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<span id="L90" class="LineNr"> 90 </span> <span class="muControl">start-running</span> <a href='092socket.mu.html#L125'>receive-from-client-socket-and-close</a> socket, <a href='075channel.mu.html#L40'>sink</a>
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<span id="L91" class="LineNr"> 91 </span>]
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<span id="L92" class="LineNr"> 92 </span>
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<span id="L93" class="LineNr"> 93 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L93'>request-socket</a> socket:num, s:text<span class="muRecipe"> -> </span>socket:num [
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<span id="L94" class="LineNr"> 94 </span> <span class="Constant">local-scope</span>
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<span id="L95" class="LineNr"> 95 </span> <span class="Constant">load-inputs</span>
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<span id="L96" class="LineNr"> 96 </span> <a href='092socket.mu.html#L132'>write-to-socket</a> socket, s
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<span id="L97" class="LineNr"> 97 </span> $write-to-socket socket, <span class="Constant">13/cr</span>
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<span id="L98" class="LineNr"> 98 </span> $write-to-socket socket, <span class="Constant">10/lf</span>
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<span id="L99" class="LineNr"> 99 </span> <span class="Comment"># empty line to delimit request</span>
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<span id="L100" class="LineNr">100 </span> $write-to-socket socket, <span class="Constant">13/cr</span>
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<span id="L101" class="LineNr">101 </span> $write-to-socket socket, <span class="Constant">10/lf</span>
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<span id="L102" class="LineNr">102 </span>]
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<span id="L103" class="LineNr">103 </span>
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<span id="L104" class="LineNr">104 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L104'>receive-from-socket</a> socket:num, <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char<span class="muRecipe"> -> </span><a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char, socket:num [
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<span id="L105" class="LineNr">105 </span> <span class="Constant">local-scope</span>
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<span id="L106" class="LineNr">106 </span> <span class="Constant">load-inputs</span>
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<span id="L107" class="LineNr">107 </span> <span class="Delimiter">{</span>
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<span id="L108" class="LineNr">108 </span><span class="Constant"> +next-attempt</span>
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<span id="L109" class="LineNr">109 </span> c:char, found?:bool, eof?:bool, error:num <span class="Special"><-</span> $read-from-socket socket
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<span id="L110" class="LineNr">110 </span> <span class="muControl">break-if</span> eof?
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<span id="L111" class="LineNr">111 </span> <span class="muControl">break-if</span> error
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<span id="L112" class="LineNr">112 </span> <span class="Delimiter">{</span>
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<span id="L113" class="LineNr">113 </span> <span class="muControl">break-unless</span> found?
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<span id="L114" class="LineNr">114 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, c
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<span id="L115" class="LineNr">115 </span> <span class="Delimiter">}</span>
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<span id="L116" class="LineNr">116 </span> <span class="Delimiter">{</span>
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<span id="L117" class="LineNr">117 </span> <span class="muControl">break-if</span> found?
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<span id="L118" class="LineNr">118 </span> switch
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<span id="L119" class="LineNr">119 </span> <span class="Delimiter">}</span>
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<span id="L120" class="LineNr">120 </span> <span class="muControl"> loop</span>
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<span id="L121" class="LineNr">121 </span> <span class="Delimiter">}</span>
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<span id="L122" class="LineNr">122 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> close <a href='075channel.mu.html#L40'>sink</a>
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<span id="L123" class="LineNr">123 </span>]
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<span id="L124" class="LineNr">124 </span>
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<span id="L125" class="LineNr">125 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L125'>receive-from-client-socket-and-close</a> socket:num, <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char<span class="muRecipe"> -> </span><a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char, socket:num [
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<span id="L126" class="LineNr">126 </span> <span class="Constant">local-scope</span>
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<span id="L127" class="LineNr">127 </span> <span class="Constant">load-inputs</span>
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<span id="L128" class="LineNr">128 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='092socket.mu.html#L104'>receive-from-socket</a> socket, <a href='075channel.mu.html#L40'>sink</a>
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<span id="L129" class="LineNr">129 </span> socket <span class="Special"><-</span> $close-socket socket
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<span id="L130" class="LineNr">130 </span>]
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<span id="L131" class="LineNr">131 </span>
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<span id="L132" class="LineNr">132 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L132'>write-to-socket</a> socket:num, s:text [
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<span id="L133" class="LineNr">133 </span> <span class="Constant">local-scope</span>
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<span id="L134" class="LineNr">134 </span> <span class="Constant">load-inputs</span>
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<span id="L135" class="LineNr">135 </span> len:num <span class="Special"><-</span> length *s
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<span id="L136" class="LineNr">136 </span> i:num <span class="Special"><-</span> copy<span class="Constant"> 0</span>
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<span id="L137" class="LineNr">137 </span> <span class="Delimiter">{</span>
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<span id="L138" class="LineNr">138 </span> done?:bool <span class="Special"><-</span> greater-or-equal i, len
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<span id="L139" class="LineNr">139 </span> <span class="muControl">break-if</span> done?
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<span id="L140" class="LineNr">140 </span> c:char <span class="Special"><-</span> index *s, i
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<span id="L141" class="LineNr">141 </span> $write-to-socket socket, c
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<span id="L142" class="LineNr">142 </span> i <span class="Special"><-</span> add i,<span class="Constant"> 1</span>
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<span id="L143" class="LineNr">143 </span> <span class="muControl"> loop</span>
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<span id="L144" class="LineNr">144 </span> <span class="Delimiter">}</span>
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<span id="L145" class="LineNr">145 </span>]
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<span id="L146" class="LineNr">146 </span>
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<span id="L147" class="LineNr">147 </span><span class="Comment"># like split-first, but don't eat the delimiter</span>
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<span id="L148" class="LineNr">148 </span><span class="muRecipe">def</span> <a href='092socket.mu.html#L148'>split-at</a> text:text, delim:char<span class="muRecipe"> -> </span>x:text, y:text [
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<span id="L149" class="LineNr">149 </span> <span class="Constant">local-scope</span>
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<span id="L150" class="LineNr">150 </span> <span class="Constant">load-inputs</span>
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<span id="L151" class="LineNr">151 </span> <span class="Comment"># empty text? return empty texts</span>
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<span id="L152" class="LineNr">152 </span> len:num <span class="Special"><-</span> length *text
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<span id="L153" class="LineNr">153 </span> <span class="Delimiter">{</span>
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<span id="L154" class="LineNr">154 </span> empty?:bool <span class="Special"><-</span> equal len,<span class="Constant"> 0</span>
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<span id="L155" class="LineNr">155 </span> <span class="muControl">break-unless</span> empty?
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<span id="L156" class="LineNr">156 </span> x:text <span class="Special"><-</span> new <span class="Constant">[]</span>
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<span id="L157" class="LineNr">157 </span> y:text <span class="Special"><-</span> new <span class="Constant">[]</span>
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<span id="L158" class="LineNr">158 </span> <span class="muControl"> return</span>
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<span id="L159" class="LineNr">159 </span> <span class="Delimiter">}</span>
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<span id="L160" class="LineNr">160 </span> idx:num <span class="Special"><-</span> find-next text, delim,<span class="Constant"> 0</span>
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<span id="L161" class="LineNr">161 </span> x:text <span class="Special"><-</span> <a href='061text.mu.html#L1287'>copy-range</a> text,<span class="Constant"> 0</span>, idx
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<span id="L162" class="LineNr">162 </span> y:text <span class="Special"><-</span> <a href='061text.mu.html#L1287'>copy-range</a> text, idx, len
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<span id="L163" class="LineNr">163 </span>]
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<span id="L164" class="LineNr">164 </span>
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<span id="L165" class="LineNr">165 </span><span class="muScenario">scenario</span> text-split-at [
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<span id="L166" class="LineNr">166 </span> <span class="Constant">local-scope</span>
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<span id="L167" class="LineNr">167 </span> x:text <span class="Special"><-</span> new <span class="Constant">[a/b]</span>
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<span id="L168" class="LineNr">168 </span> run [
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<span id="L169" class="LineNr">169 </span> y:text, z:text <span class="Special"><-</span> <a href='092socket.mu.html#L148'>split-at</a> x, <span class="Constant">47/slash</span>
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<span id="L170" class="LineNr">170 </span> 10:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *y
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<span id="L171" class="LineNr">171 </span> 20:@:char/<span class="Special">raw</span> <span class="Special"><-</span> copy *z
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<span id="L172" class="LineNr">172 </span> ]
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<span id="L173" class="LineNr">173 </span> memory-should-contain [
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<span id="L174" class="LineNr">174 </span> 10:array:character <span class="Special"><-</span> <span class="Constant">[a]</span>
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<span id="L175" class="LineNr">175 </span> 20:array:character <span class="Special"><-</span> <span class="Constant">[/b]</span>
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<span id="L176" class="LineNr">176 </span> ]
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<span id="L177" class="LineNr">177 </span>]
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</pre>
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</body>
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</html>
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