[erlang-questions] R14B gen_tcp:recv/2,3

Bengt Kleberg <>
Fri Sep 17 09:51:41 CEST 2010

I read the README and it does say that backwards compatibility is broken
for this case. That is very unusual and unfortunate for you, and others,
using this.


 On Fri, 2010-09-17 at 09:29 +0200, Roberto Ostinelli wrote:
> > Greetings,
> >
> > If (I have not read the document) gen_tcp:recv/2,3 returns {ok,
> > {http_error,String}} your have a matching clause. Unfortunately the
> > match means that Bin will be {http_error,String}, which is probably not
> > what you want.
> >
> hi bengt,
> my code was just making a statement and is indeed incorrect.
> i do have quite some code which relies on {packet, http} and passive
> mode, so i believe i might be confronted with adding code which
> handles running on different versions of the erlang VM. *if* i'm
> not misunderstanding, this does break backwards compatibility and i'm
> quite surprised, to the point i'm asking this list for confirmation.
> r.

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