sockets - 使用 CCL 发送 UDP 时出现问题

Question

当我尝试按如下方式发送消息时:

(let* ((temp-buffer message)
 (out-vector (make-array (length temp-buffer) 
             :element-type'(unsigned-byte 8)
             :initial-contents temp-buffer))
 (s (ccl:make-socket :remote-host host :remote-port port :type :datagram )))
(ccl:send-to s out-vector (length out-vector))
(ccl::close s))

我收到以下错误:

on #<CCL::UDP-SOCKET #x302000D9FCFD> : 
Socket is already connected (error #56) during sendto

最初，这段代码是有效的。谁能解释一下这个错误消息以及如何解决它。感谢您的帮助。

Answer 1

这似乎有效。

(let* ((temp-buffer message)
       (out-vector (make-array (length temp-buffer)
                               :element-type'(unsigned-byte 8)
                               :initial-contents temp-buffer))
       (s (ccl:make-socket :type :datagram)))
  (ccl:send-to s out-vector (length out-vector) :remote-host host :remote-port port)
  (ccl::close s))