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<pre id='vimCodeElement'>
<span class="Comment"># example program: a single-request HTTP server</span>
<span class="Comment"># listen for connections from clients on a server socket</span>
<span class="Comment"># when a connection occurs, transfer it to a session socket</span>
<span class="Comment"># read from it using channels</span>
<span class="Comment"># write to it directly</span>
<span class="Comment">#</span>
<span class="Comment"># After running it, navigate to localhost:8080. Your browser should display</span>
<span class="Comment"># "SUCCESS!" and the server will terminate after one connection.</span>
<span class="muRecipe">def</span> main [
<span class="Constant">local-scope</span>
socket:num <span class="Special"><-</span> $open-server-socket <span class="Constant">8080/port</span>
$print <span class="Constant">[Mu socket creation returned ]</span>, socket, <span class="Constant">10/newline</span>
<span class="muControl">return-unless</span> socket
session:num <span class="Special"><-</span> $accept socket
contents:&:source:char, sink:&:sink:char <span class="Special"><-</span> new-channel<span class="Constant"> 30</span>
sink <span class="Special"><-</span> start-running receive-from-socket session, sink
query:text <span class="Special"><-</span> drain contents
$print <span class="Constant">[Done reading from socket.]</span>, <span class="Constant">10/newline</span>
write-to-socket session, <span class="Constant">[HTTP/1.0 200 OK</span>
<span class="Constant">Content-type: text/plain</span>
<span class="Constant">SUCCESS!</span>
<span class="Constant">]</span>
$print <span class="Constant">10/newline</span>, <span class="Constant">[Wrote to and closing socket...]</span>, <span class="Constant">10/newline</span>
$close-socket session
$close-socket socket
]
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