[OSRM-talk] Using OSRM linked into other code?

John Firebaugh john.firebaugh at gmail.com
Fri Nov 7 17:46:44 UTC 2014


Hi Steve,

Recent versions of osrm-backend build a library which you can link against.
See https://github.com/Project-OSRM/node-osrm/ for an example.

cheers,
John

On Fri, Nov 7, 2014 at 7:13 AM, Stephen Woodbridge <woodbri at swoodbridge.com>
wrote:

> Hi,
>
> I seem to remember a while back that there was a discussion about the
> possibility to embed the OSRM routing engine at the code level rather than
> doing HTTP requests to a server.
>
> I now find myself in a position that this would be desirable to do. I have
> a small coverage area like a city, but I'm getting killed by the overhead
> of formatting requests as strings, making a socket connection to
> osrm-routed, parsing the responses, etc. Making local requests my server
> this is taking 4-500 ms per request.
>
> Basically, I'm doing viaroute requests with 2-100 via points. 99% of the
> time all I need to know is the travel time.
>
> Since I'm developing in C++, I thought it might be easy and much faster to
> instantiate the routing engine and then have a simple interface where I can
> pass a container of points and get back the travel time for that route
> and/or the path coordinates. But I could live without the coordinates if I
> had to.
>
> Has anyone done this already? Can you share?
>
> I have started digging through the source to see if I can do this, but
> working my way in from osrm-routed or Tools/simpleclient.cpp the code is
> very entangled with all the http request/response stuff that I would
> ideally like to avoid. So far the most promising path looks like using some
> variant of the simpleclient, but its not obvious if or how to untangle all
> the json stuff and simply return a struct or class to the caller without
> that. I spent most of yesterday, digging through this and made a lot of
> progress just understanding simpleclient and getting ti to compile and work
> and get it to actual return results using a shared memory connection.
>
> A little help in this direction would be appreciated.
>
> Thanks,
>   -Steve
>
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