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16401e8162
Some users are already hitting the 64k source port limit when
connecting to servers. The system usually maintains a list of
unused source ports, regardless of the source IP they're bound
to. So in order to go beyond the 64k concurrent connections, we
have to manage the source ip:port lists ourselves.
The solution consists in assigning a source port range to each
server and use a free port in that range when connecting to that
server, either for a proxied connection or for a health check.
The port must then be put back into the server's range when the
connection is closed.
This mechanism is used only when a port range is specified on
a server. It makes it possible to reach 64k connections per
server, possibly all from the same IP address. Right now it
should be more than enough even for huge deployments.
(cherry picked from commit
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| .. | ||
| appsession.h | ||
| base64.h | ||
| cfgparse.h | ||
| compat.h | ||
| config.h | ||
| debug.h | ||
| defaults.h | ||
| eb32tree.h | ||
| eb64tree.h | ||
| ebpttree.h | ||
| ebtree.h | ||
| epoll.h | ||
| errors.h | ||
| memory.h | ||
| mini-clist.h | ||
| rbtree.h | ||
| regex.h | ||
| sessionhash.h | ||
| standard.h | ||
| template.h | ||
| ticks.h | ||
| time.h | ||
| tools.h | ||
| uri_auth.h | ||
| version.h | ||