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<H1>[99s-extend] Mandatory init/3 and optional handle/2 and terminate/3</H1>
<B>Paulo F. Oliveira</B>
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TITLE="[99s-extend] Mandatory init/3 and optional handle/2 and terminate/3">paulo.ferraz.oliveira at gmail.com
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<I>Wed Jun 4 23:37:14 CEST 2014</I>
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<PRE>Hello.
You wrote here <<A HREF="http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_rest/">http://ninenines.eu/docs/en/cowboy/HEAD/manual/cowboy_rest/</A>>
that
"The only mandatory callback is init/3, needed to perform the protocol
upgrade."
In my code I have only this function for the protocol upgrade:
init({_TransportName, _ProtocolName}, _Req, []) ->
{upgrade, protocol, cowboy_rest}.
On the other hand, when compiling, I get the following warnings:
src/handler_transactions.erl:3: Warning: undefined callback function
handle/2 (behaviour 'cowboy_http_handler')
src/handler_transactions.erl:3: Warning: undefined callback function
terminate/3 (behaviour 'cowboy_http_handler')
Is this the expected behavior? I know I _can_ ignore the warnings, but not
if I want to use Erlang compiler option warnings_as_errors, for example.
Many thanks.
- Paulo F. Oliveira
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