[Chicken-janitors] #1007: socket egg: socket-close should track closed status

[Chicken Trac]

#1007: socket egg: socket-close should track closed status
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 Reporter:  zbigniew    |       Owner:  zbigniew
     Type:  defect      |      Status:  new     
 Priority:  minor       |   Milestone:  someday 
Component:  unknown     |     Version:          
 Keywords:  socket egg  |  
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 We should probably track socket closed status, possibly by setting the
 fileno to #f when socket-close is called.  This should prevent accidental
 reuse of the socket FD when it is reopened by someone else.

 It's not clear whether socket-close should stop throwing an error on
 double-close, or if this should be done instead in socket-close*.  This
 would be appropriate behavior to use in a finalizer.  But socket-close* is
 targeted for (immediate) use after network error.

 Also note there are a bunch of direct calls to _close_socket which might
 have to be corrected to track the closed state.

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Ticket URL: <http://bugs.call-cc.org/ticket/1007>
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