[erlang-questions] 8k limit on gen_tcp:recv?

Bob Ippolito <>
Thu Mar 11 00:48:17 CET 2010


Since this is definitely not clear in the question, the code would
look something like this:

    inet:setopts(Socket, [{packet, http}]),
    case gen_tcp:recv(Socket, 0, ?IDLE_TIMEOUT) of
        {ok, {http_request, Method, Path, Version}} ->
            headers(Socket, {Method, Path, Version}, [], Body, 0)
    end.

Rachel - how about providing a reproducible test case and making it an
issue in the mochiweb project? There might be some continuation
response from recv that mochiweb doesn't currently expect to receive.

http://code.google.com/p/mochiweb/issues/entry

On Wed, Mar 10, 2010 at 3:40 PM, Rachel Willmer <> wrote:
> I've been debugging a problem whereby couchdb rejects a URL longer than 8k.
>
> At first, I thought it was an already known limitation in mochiweb
> (the stack is couchdb/mochiweb/erlang).
>
> But with large amounts of ioformat debugging, I've pinned it down to a
> call from mochiweb to gen_tcp:recv which fails on this long URL.
>
> Is this a known limitation in erlang's gen_tcp:recv?
>
> Rachel
>
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