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document extpoll forced service problem on v2.0

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Andy Green 2016-10-07 20:04:19 +08:00
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commit 3213c56516
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README.coding.md
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@ -167,6 +167,14 @@ whereas info is ignored by default.
External Polling Loop support
-----------------------------
NOTE: You should use v2.1 or later (or master) for external polling loop
support. After v2.0 was released a problem was found meaning some internal
APIs needed to be exposed to deal with connections that need service even
without any new network activity. For normal poll() and libuv/ev loops,
lws takes care of this internally but external polling loop needs it doing
externally. Since we can't change the API on a released version that
means you need to use v2.1 or later for this feature to work properly.
**libwebsockets** maintains an internal `poll()` array for all of its
sockets, but you can instead integrate the sockets into an
external polling array. That's needed if **libwebsockets** will