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4 changes: 3 additions & 1 deletion PSGI/Extensions.pod
Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,9 @@ C<psgix.io>: The raw IO socket to access the client connection to do
low-level socket operations. This is only available in PSGI servers
that run as an HTTP server, and should be used when (and only when)
you want to I<jailbreak> out of PSGI abstraction, to implement
protocols over HTTP such as BOSH or WebSocket.
protocols over HTTP such as BOSH or WebSocket. Application should
return C<[]> to show clear intention to jailbreak out of PSGI.
In this case application is responsible to close the socket.

=item *

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