code: func (ctx *RequestCtx) RemoteAddr() net.Addr {
  	if ctx.c == nil {
  		return zeroTCPAddr
  	}
  	addr := ctx.c.RemoteAddr()
  	if addr == nil {
  		return zeroTCPAddr
  	}
  	return addr
  }
docs: // RemoteAddr returns client address for the given request.
  //
  // Always returns non-nil result.