SimpleMultithreadedAsyncHttpServer

Modified code from StackOverflow https://ru.stackoverflow.com/questions/1214294/tcplistener-%D0%BA%D0%B0%D0%BA-%D1%80%D0%B5%D0%B0%D0%BB%D0%B8%D0%B7%D0%BE%D0%B2%D0%B0%D1%82%D1%8C-http-%D1%81%D0%B5%D1%80%D0%B2%D0%B5%D1%80-%D0%B8-%D0%BF%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B8%D1%82%D1%8C%D1%81%D1%8F-%D0%BA-%D0%BD%D0%B5%D0%BC%D1%83-%D0%BA%D0%BB%D0%B8%D0%B5%D0%BD%D1%82%D0%BE%D0%BC