sinatra - ruby, Plivo and Heroku getting status "404" or no xml response error -


i attempting make outbound call softphone using plivo.

the answer url (on plivo account) http://frozen-lake-7349.herokuapp.com/outbound

if go url, on heroku, see:

<response><hangup/></response>

which correct.

the ruby code is:

get '/outbound'   to_number = params[:to]   from_number = params[:clid] ? params[:clid] : params[:from] ? params[:from] : ''   caller_name = params[:callername] ? params[:callername] : ''   resp = plivo::response.new()   if not to_number     resp.addhangup()   else     if to_number[0, 4] == "sip:"       d = resp.adddial({'callername' => caller_name})       d.adduser(to_number)     else       d = resp.adddial({'callerid' => from_number})       d.addnumber(to_number)     end   end   content_type 'text/xml'     resp.to_xml() end

yet when try make call softphone never works. plivo debug logs tells me http response failure ,

xml : no response tag present

and heroku logs say

[03/sep/2013 16:38:46] "post /outbound http/1.1" 404 18 0.0007 2013-09-03t16:38:46.063235+00:00 heroku[router]: at=info method=post path=/outbound host=frozen-lake-7349.herokuapp.com fwd="54.219.28.199" dyno=web.1 connect=1ms service=4ms status=404 bytes=18

i totally lost here guys. appreciated.


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