The Tor Browser: layout/reftests/backgrounds/delay-image-response.sjs@7e26c7da4463

     1 const BinaryOutputStream = Components.Constructor("@mozilla.org/binaryoutputstream;1", "nsIBinaryOutputStream", "setOutputStream");

     2 /* This data is picked from image/test/reftest/generic/check-header.sjs */

     3 const IMAGE_DATA =

     4   [

     5    0x89,  0x50,  0x4E,  0x47,  0x0D,  0x0A,  0x1A,  0x0A,  0x00,  0x00,  0x00,

     6    0x0D,  0x49,  0x48,  0x44,  0x52,  0x00,  0x00,  0x00,  0x64,  0x00,  0x00,

     7    0x00,  0x64,  0x08,  0x02,  0x00,  0x00,  0x00,  0xFF,  0x80,  0x02,  0x03,

     8    0x00,  0x00,  0x00,  0x01,  0x73,  0x52,  0x47,  0x42,  0x00,  0xAE,  0xCE,

     9    0x1C,  0xE9,  0x00,  0x00,  0x00,  0x9E,  0x49,  0x44,  0x41,  0x54,  0x78,

    10    0xDA,  0xED,  0xD0,  0x31,  0x01,  0x00,  0x00,  0x08,  0x03,  0xA0,  0x69,

    11    0xFF,  0xCE,  0x5A,  0xC1,  0xCF,  0x07,  0x22,  0x50,  0x99,  0x70,  0xD4,

    12    0x0A,  0x64,  0xC9,  0x92,  0x25,  0x4B,  0x96,  0x2C,  0x05,  0xB2,  0x64,

    13    0xC9,  0x92,  0x25,  0x4B,  0x96,  0x02,  0x59,  0xB2,  0x64,  0xC9,  0x92,

    14    0x25,  0x4B,  0x81,  0x2C,  0x59,  0xB2,  0x64,  0xC9,  0x92,  0xA5,  0x40,

    15    0x96,  0x2C,  0x59,  0xB2,  0x64,  0xC9,  0x52,  0x20,  0x4B,  0x96,  0x2C,

    16    0x59,  0xB2,  0x64,  0x29,  0x90,  0x25,  0x4B,  0x96,  0x2C,  0x59,  0xB2,

    17    0x14,  0xC8,  0x92,  0x25,  0x4B,  0x96,  0x2C,  0x59,  0x0A,  0x64,  0xC9,

    18    0x92,  0x25,  0x4B,  0x96,  0x2C,  0x05,  0xB2,  0x64,  0xC9,  0x92,  0x25,

    19    0x4B,  0x96,  0x02,  0x59,  0xB2,  0x64,  0xC9,  0x92,  0x25,  0x4B,  0x81,

    20    0x2C,  0x59,  0xB2,  0x64,  0xC9,  0x92,  0xA5,  0x40,  0x96,  0x2C,  0x59,

    21    0xB2,  0x64,  0xC9,  0x52,  0x20,  0x4B,  0x96,  0x2C,  0x59,  0xB2,  0x64,

    22    0x29,  0x90,  0x25,  0x4B,  0x96,  0x2C,  0x59,  0xB2,  0x14,  0xC8,  0x92,

    23    0x25,  0x4B,  0x96,  0x2C,  0x59,  0x0A,  0x64,  0xC9,  0xFA,  0xB6,  0x89,

    24    0x5F,  0x01,  0xC7,  0x24,  0x83,  0xB2,  0x0C,  0x00,  0x00,  0x00,  0x00,

    25    0x49,  0x45,  0x4E,  0x44,  0xAE,  0x42,  0x60,  0x82,

    26   ];

    28 /**

    29  * The timer is needed when a delay is set. We need it to be out of the method

    30  * so it is not eaten alive by the GC.

    31  */

    32 var timer;

    34 function handleRequest(request, response) {

    35   var query = {};

    36   request.queryString.split('&').forEach(function (val) {

    37     var [name, value] = val.split('=');

    38     query[name] = unescape(value);

    39   });

    41   response.setStatusLine(request.httpVersion, 200, "OK");

    42   response.setHeader("Content-Type", "image/png", false);

    44   function imageWrite() {

    45     var stream = new BinaryOutputStream(response.bodyOutputStream);

    46     stream.writeByteArray(IMAGE_DATA, IMAGE_DATA.length);

    47   }

    49   // If there is no delay, we write the image and leave.

    50   if (!("delay" in query)) {

    51     imageWrite();

    52     return;

    53   }

    55   // If there is a delay, we create a timer which, when it fires, will write

    56   // image and leave.

    57   response.processAsync();

    58   const nsITimer = Components.interfaces.nsITimer;

    60   timer = Components.classes["@mozilla.org/timer;1"].createInstance(nsITimer);

    61   timer.initWithCallback(function() {

    62     imageWrite();

    63     response.finish();

    64   }, query["delay"], nsITimer.TYPE_ONE_SHOT);

    65 }

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