SBCL 套接字：重用地址
对 sockopt-reuse-address 的调用似乎没有效果。
(setf socket (make-instance 'sb-bsd-sockets:inet-socket
:type type :protocol protocol)
(setf (sb-bsd-sockets:sockopt-reuse-address socket) t)
(setf (sb-bsd-sockets:non-blocking-mode socket) t)
(sb-bsd-sockets:socket-bind socket ip port)
(sb-bsd-sockets:socket-listen socket backlog)
尝试重新绑定到同一端口会引发以下错误：
Socket error in "bind": EADDRINUSE (Address already in use)
[Condition of type SB-BSD-SOCKETS:ADDRESS-IN-USE-ERROR]
我做错了什么？
The call to sockopt-reuse-address seems to have no effect.
(setf socket (make-instance 'sb-bsd-sockets:inet-socket
:type type :protocol protocol)
(setf (sb-bsd-sockets:sockopt-reuse-address socket) t)
(setf (sb-bsd-sockets:non-blocking-mode socket) t)
(sb-bsd-sockets:socket-bind socket ip port)
(sb-bsd-sockets:socket-listen socket backlog)
Attempt to rebind to the same port raises the following error:
Socket error in "bind": EADDRINUSE (Address already in use)
[Condition of type SB-BSD-SOCKETS:ADDRESS-IN-USE-ERROR]
What am I doing wrong?
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你可以尝试IOLib，它的
make-socket功能似乎支持:reuse-address关键字。据我记得，IOLib 没有利用 Lisp 实现的内置网络功能，因此即使没有 SBCL 直接支持该功能，它也可以工作。不过我还没有测试过。
You could try out IOLib, whose
make-socketfunction seems to support a:reuse-addresskeyword. As far as I recall, IOLib does not make use of the Lisp implementation's built-in networking functionality, so it might work even without SBCL supporting the feature directly.I haven't tested it, though.
请参阅此帖子在 sbcl-帮助。
See this thread at sbcl-help.