[Libwebsockets] problems with big dynamic content

Andy Green andy at warmcat.com
Fri Jun 15 20:51:10 CEST 2018

On June 16, 2018 2:27:47 AM GMT+08:00, Per Bothner <per at bothner.com> wrote:
>There appears to be a problem serving large dynamic http content, at
>least when the response body is a single large string.
>See the attached modification to the minimal-http-server-dynamic
>It was enhanced so browsing to http://localhost:PORT/dyn/COUNT
>COUNT extra lines, each a little over 60 bytes long.
>For example: http://localhost:7681/dyn/1000
>In my case the response is truncated at line 63.

Hm it's suspiciously 64KiB.  From memory it's the default MTU on lo on Linux.  I'll try it in the morning.

>This is a git pull and build from yesterday.
>On a related note, it would be convenient if the various
>could be run using the library in the build directory, without having
>install it first.  As I'm not fluent in cmake, I hacked up a trivial
>to do that.

Most of the minmal samples need their own cwd when run, but if you give cmake -DLWS_WITH_MINIMAL_EXAMPLES=1, all applicable examples will be built in ./bin in the build dir as part of lws build.  If you don't want to install the lib each time, you can use LD_PRELOAD= with those to force it to use the libwebsockets.so also from the build dir, while running it in the cwd that has the assets it wants.


More information about the Libwebsockets mailing list