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Peter Corke edited this page Sep 4, 2018 · 3 revisions

This is still evolving. This example is in examples/webserver

user.m

function user() %#codegen
    webserver(8080, 'myserver');  % start webserver on port 8080
    sleep(60);   % hang around for a minute, then shutdown
function myserver()   % called on every page request
    switch (webserver.url())
        case '/'
            webserver.html('home here');
        case '/bob'
            stllog('bob');
            webserver.html('<html><body>hello <b>from</b> /bob</body></html>');
        case '/alice'
            vals.a = 1;
            vals.b = 2;
            webserver.template('templates/alice.html', vals);
        case '/duck':
            webserver.file('duck.jpg', 'image/jpg');

The switch statement handles the particular URLs that are requested on the webserver:

  • / just sends simple text to the web browser
  • /bob sends an HTML formatted string to the web browser
  • /alice sends the contents of the template file templates/alice.html and does the substitutions defined by the struct vals. The template variable a is replaced with 1 and so on. The numeric values are converted to strings using num2str which will convert a row-vector to a space separated sequence of numbers.
  • /duck [not implemented yet] will return the contents of the data file with the MIME type image/jpg which will be rendered in the web browser.

If this is running on the same machine as the web browser, we can access it at localhost. The page alice has the URL localhost:8080/alice. The template file is

<html>
<body>
<p>This is a test page</p>
<p>a = <TMPL_VAR name="a"></p>
<p>b = <TMPL_VAR name="b"></p>
</body>
</html>

and the resulting web page shows how the the template substitution, the TMPL_VAR tags, have worked.

web page for /alice

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