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experiments/proxy.js

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+var proxy = require('http-proxy').createProxyServer({
+  target: {host: 'localhost', port: 9000}
+});
+var server = require('http').createServer(function(req, res) {
+  console.log('[REQUEST] ' + req.url);
+  if (req.method == 'POST') {
+    var body = '';
+    req.on('data', function (data) {
+      body += data;
+    });
+    req.on('end', function () {
+      print_body('[REQUEST.BODY] ', body);
+    });
+  }
+  var _write = res.write;
+  res.write = function(data) {
+    print_body('[RESPONSE.BODY] ', data);
+    _write.call(res, data);
+  }
+  proxy.web(req, res);
+});
+function print_body(header, body) {
+  var text = String(body);
+  console.log(header + text);
+  for (var i = 0; i < text.length; i++) {
+    console.log('body[%s] = %s = %s', i, text[i], text.charCodeAt(i));
+  }
+}
+server.listen(8000);