PuTTY wish remove-statics

summary: Remove static variables to allow multiple or sequential connections
class: wish: This is a request for an enhancement.
difficulty: tricky: Needs many tuits.
blocks: reuse-windows port-mac dll-frontend multiple-connections
priority: low: We aren't sure whether to fix this or not.
fixed-in: 2003-01-15 (0.54) (0.55) (0.56) (0.57) (0.58) (0.59) (0.60) (0.61) (0.62)

For several reasons it would be handy to be able to run multiple connections in a single process. This will require removing most (or all) of PuTTY's static and global variables, and replacing them with fields in dynamically allocated structures.

This is a code cleanup which we should probably do anyway.

SGT, 2003-01-14: After much pain and upheaval, I think this is now as done as it'll ever be. The Unicode module was particularly unpleasant (and wants a substantial rewrite really), and there are a few remaining globals which are genuinely global (applying to all sessions) so I've left them in; but I think everything pertaining to a particular session is now non-global, at least in the portable parts of the code. (The Windows front end still has many static variables, but they will probably never go away.)

Audit trail for this wish.

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(last revision of this bug record was at 2004-11-16 15:27:00 +0000)