Simple python backend

backend.py

+import BaseHTTPServer
+import sys
+import socket
+
+
+class HTTP6Server(BaseHTTPServer.HTTPServer):
+  address_family = socket.AF_INET6
+
+
+class BackendHandler(BaseHTTPServer.BaseHTTPRequestHandler):
+  response = 'ThisIsResponse' * 10
+  content_security_policy = """"default-src 'none'; img-src 'self' data:; """ \
+      """media-src 'self'; connect-src 'self' %s; script-src 'self' """ \
+      """'unsafe-eval'; font-src netdna.bootstrapcdn.com; style-src """ \
+      """'self' netdna.bootstrapcdn.com 'unsafe-inline' data:; frame-src """ \
+      """'self' data:"""
+
+  def do_GET(self):
+    self.send_response(200)
+    self.send_header('X-Frame-Options', 'SAMEORIGIN')
+    self.send_header('X-Content-Type-Options', 'nosniff')
+    self.send_header(
+      'Content-Security-Policy',
+      self.content_security_policy % (self.server.CORS_DOMAIN,))
+    self.send_header('Access-Control-Allow-Origin', self.server.CORS_ORIGIN)
+    self.end_headers()
+    if self.path == '/test':
+      self.wfile.write(self.response)
+    else:
+     self.wfile.write('Hello!')
+
+
+def show_help():
+  print 'Invoke: %s ip port domain host' % (sys.argv[0])
+
+
+if __name__ == '__main__':
+  if len(sys.argv) != 5:
+    show_help()
+    sys.exit(1)
+  ip, port, domain, host = sys.argv[1:]
+  if ':' in ip:
+    ip_ = '[%s]' % (ip,)
+    server = HTTP6Server
+  else:
+    ip_ = ip
+    server = BaseHTTPServer.HTTPServer
+  print 'Serving on http://%s:%s/ with allowed domain %s on host %s' % (
+    ip_, port, domain, host)
+  server = server(
+      (ip, int(port)),
+      BackendHandler)
+  server.CORS_DOMAIN = domain
+  server.CORS_ORIGIN = host
+  server.serve_forever()