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<H1>[99s-extend] Getting started error: behaviour cowboy_http_handler undefined</H1>
<B>Loïc Hoguin</B>
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TITLE="[99s-extend] Getting started error: behaviour cowboy_http_handler undefined">essen at ninenines.eu
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<I>Mon Mar 10 21:36:22 CET 2014</I>
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<PRE>Try updating Erlang or Cowboy, this isn't the first time this happens
and I fixed something at some point.
Also see if you have ERL_LIBS already defined, in which case there might
be a bug in Cowboy.
On 03/10/2014 08:44 PM, <A HREF="https://lists.ninenines.eu/listinfo/extend">lloyd at writersglen.com</A> wrote:
><i> Hello,
</I>><i>
</I>><i> I've slavishly emulated the "Getting started" example in the guide:
</I>><i>
</I>><i> <A HREF="http://ninenines.eu/docs/en/cowboy/HEAD/guide/getting_started/">http://ninenines.eu/docs/en/cowboy/HEAD/guide/getting_started/</A>
</I>><i>
</I>><i> But, when I compile I get this error:
</I>><i>
</I>><i> yada yada
</I>><i> ERLC hello_erlang_app.erl hello_handler.erl hello_erlang_sup.erl
</I>><i> compile: warnings being treated as errors
</I>><i> src/hello_handler.erl:2: behaviour cowboy_http_handler undefined
</I>><i> make: *** [ebin/hello_erlang.app] Error 1
</I>><i>
</I>><i> Cowboy seems to be correctly loaded and compiled as a dependency. I can see .../cowboy/ebin/cowboy_http_handler.beam
</I>><i>
</I>><i> However, when I remove the line -behavior(cowboy_http_handler) from hello_handler.erl, system compiles and creates release just fine.
</I>><i>
</I>><i> % -behavior(cowboy_http_handler).
</I>><i>
</I>><i> Could this be a bug in Getting started or some dunder-headed thing on my end?
</I>><i>
</I>><i> Thanks,
</I>><i>
</I>><i> LRP
</I>><i>
</I>><i>
</I>><i> *********************************************
</I>><i> My books:
</I>><i>
</I>><i> THE GOSPEL OF ASHES
</I>><i> <A HREF="http://thegospelofashes.com">http://thegospelofashes.com</A>
</I>><i>
</I>><i> Strength is not enough. Do they have the courage
</I>><i> and the cunning? Can they survive long enough to
</I>><i> save the lives of millions?
</I>><i>
</I>><i> FREEIN' PANCHO
</I>><i> <A HREF="http://freeinpancho.com">http://freeinpancho.com</A>
</I>><i>
</I>><i> A community of misfits help a troubled boy find his way
</I>><i>
</I>><i> AYA TAKEO
</I>><i> <A HREF="http://ayatakeo.com">http://ayatakeo.com</A>
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</I>><i>
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</I>><i> **********************************************
</I>><i>
</I>><i> _______________________________________________
</I>><i> Extend mailing list
</I>><i> <A HREF="https://lists.ninenines.eu/listinfo/extend">Extend at lists.ninenines.eu</A>
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--
Loïc Hoguin
<A HREF="http://ninenines.eu">http://ninenines.eu</A>
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