r an HTTP server. When a connection is accepted. Call this with a handler function to handle the connect. The handler will be called with one argument, the request table, which will contain the following keys: * `:head-size` - number of bytes in the http header. * `:headers` - table mapping header names to header values. * `:connection` - the connection stream for the header. * `:buffer` - the buffer instance that may contain extra bytes. * `:path` - HTTP path. * `:method` - HTTP method, as a string.</pre><