[rabbitmq-discuss] Mochiweb MAX_RECV_BODY and JSON_RPC plugin
Simon MacMullen
simon at rabbitmq.com
Mon Aug 22 10:03:42 BST 2011
On 19/08/11 21:20, Gavin M. Roy wrote:
> Ran into an unintended snag with JSON Channel RPC with regard to a
> mochiweb limitation.
>
> Mochiweb has a hardcoded constant for the maximum body size for a
> request at 1MB:
>
> https://github.com/mochi/mochiweb/blob/master/src/mochiweb_request.erl#L47
>
> This is a problem when you're trying to POST messages that are larger
> than 1MB.
>
> The fix is relatively easy, but I wanted to find out if there was any
> patching of mochiweb prior to making the mochiweb.ez file or is the file
> just provided for convenience and providing a tagged supported version.
> That is, if I recompile it with the # I want, can I just go from the
> vanilla mochiweb repo?
We patch mochiweb a bit, to make it build on older versions of Erlang,
and to remove its dependency on the "crypto" application. I guess you
could live without these, but more importantly we also use a specific
version (basically what was the latest version at the point I started
writing rabbitmq-management) and haven't tested with newer versions.
If I were you I would add your patch to our set and build with our
wrapper. To do this, check out rabbitmq-public-umbrella, then check out
the mochiweb-wrapper repository within it:
http://hg.rabbitmq.com/mochiweb-wrapper/
(or run "make checkout" which will check out everything including
mochiweb-wrapper)
Then within mochiweb-wrapper add your patch, and add it to
WRAPPER_PATCHES in package.mk, then "make dist".
Alternatively you could build it yourself but I would try to use the
same version as we do - 9a53dbd7b2c52eb5b9d4 in the mochiweb git repo.
Cheers, Simon
--
Simon MacMullen
RabbitMQ, VMware
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