|  | @@ -17,7 +17,8 @@ app.post('/submit', function (req, res) {
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				|  |  |          res.arrayBuffer() .then(r => fs.writeFileSync("./file", Buffer.from(r) ));
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				|  |  |      })
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				|  |  |      res.header("Access-Control-Allow-Origin", "*");
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				|  |  | -    res.end()
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				|  |  | +    res.end("api_success");
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				|  |  | +
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				|  |  |  })
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				|  |  |  app.options('/submit', function (req, res) {
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				|  |  |      res.header("Access-Control-Allow-Origin", "*");
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