[ZNC-commits] [znc/znc] 414fa4: WebModules: Discard sessions in LRU order

[GitHub <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/znc/znc
  Commit: 414fa40eb56a4f9f25113bc8bcecffb2a7470334
      https://github.com/znc/znc/commit/414fa40eb56a4f9f25113bc8bcecffb2a7470334
  Author: Uli Schlachter <ps...@zn...>
  Date:   2013-12-07 (Sat, 07 Dec 2013)

  Changed paths:
    M include/znc/WebModules.h
    M src/WebModules.cpp

  Log Message:
  -----------
  WebModules: Discard sessions in LRU order

Currently, znc has a limit of 5 web sessions per IP address. This limit exists
to defend against some obvious DoS attacks. When this limit is hit, some session
is discarded.

Previously, we would discard the session that std::multimap::find() would give
us. The multimap used mapped from IP addresses to sessions. Thus, we would
discard the oldest session.

This commit changes this into some least-recently-used logic. Whenever a session
is used, we record the timestamp of this. Then when a session has to be picked
for discarding, the one with the oldest timestamp is used.

Signed-off-by: Uli Schlachter <ps...@zn...>


  Commit: e0fd211053c45351f42244c93e4e894e344480bb
      https://github.com/znc/znc/commit/e0fd211053c45351f42244c93e4e894e344480bb
  Author: Alexey Sokolov <ale...@as...>
  Date:   2014-01-16 (Thu, 16 Jan 2014)

  Changed paths:
    M include/znc/WebModules.h
    M src/WebModules.cpp

  Log Message:
  -----------
  Merge pull request #441 from psychon/websocks-expire-oldest

WebModules: Discard sessions in LRU order


Compare: https://github.com/znc/znc/compare/dc9f30d39762...e0fd211053c4