backend default {
        .host = "127.0.0.1";
        .port = "80";
}

// Intialization
C{
        #include "/usr/src/wurfl/wurfl.h"
        int  is_mobile;
}C

// simple subroutine that fetches the useragent, checks if its a mobile device and
// sets the backend-request header accordingly
sub detectmobile {
C{
        char *ua = VRT_GetHdr(sp, HDR_REQ, "\013User-Agent:");
        is_mobile = wurfl_ismobile(ua);
        VRT_SetHdr(sp, HDR_BEREQ, "\011X-Mobile:", (is_mobile == 1)?"yes":"no", vrt_magic_string_end);
}C
}

// Miss, pass and pipe all make a request to the backend
sub vcl_miss {
        call detectmobile;
        return(fetch);
}
sub vcl_pipe {
        call detectmobile;
        return(pipe);
}
sub vcl_pass {
        call detectmobile;
        return(pass);
}


// Deliver sets the header to the response to the client as well
sub vcl_deliver {
C{
        VRT_SetHdr(sp, HDR_RESP, "\011X-Mobile:", (is_mobile == 1)?"yes":"no", vrt_magic_string_end);
}C
}