Отправка файла:

About to connect() to diadoc-api.kontur.ru port 443 (#0)
*   Trying 46.17.200.241... * connected
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSL connection using ECDHE-RSA-AES128-GCM-SHA256
* Server certificate:
* 	 subject: CN=*.kontur.ru
* 	 start date: 2016-04-05 00:00:00 GMT
* 	 expire date: 2018-05-05 23:59:59 GMT
* 	 issuer: C=US; O=GeoTrust Inc.; CN=RapidSSL SHA256 CA
* 	 SSL certificate verify ok.
> POST /Recognize?filename=t2.xps HTTP/1.1
Host: diadoc-api.kontur.ru
Accept-Encoding: gzip
Authorization: DiadocAuth ddauth_api_client_id=oviontInform-ЗдесьID,ddauth_token=Здесь_токен
Accept: application/json
Content-Length: 86726
Content-Type: application/x-www-form-urlencoded

< HTTP/1.1 200 OK
< Server: nginx
< Date: Mon, 26 Sep 2016 09:13:45 GMT
< Content-Length: 36
< Retry-After: 3
< Access-Control-Allow-Origin: *
< 
* Connection #0 to host diadoc-api.kontur.ru left intact

da2b99b2-9a5a-4860-9280-9ff06b8f54a8

Запрос результата:

* About to connect() to diadoc-api.kontur.ru port 443 (#0)
*   Trying 46.17.200.241... * connected
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSL connection using ECDHE-RSA-AES128-GCM-SHA256
* Server certificate:
* 	 subject: CN=*.kontur.ru
* 	 start date: 2016-04-05 00:00:00 GMT
* 	 expire date: 2018-05-05 23:59:59 GMT
* 	 issuer: C=US; O=GeoTrust Inc.; CN=RapidSSL SHA256 CA
* 	 SSL certificate verify ok.
> GET /GetRecognized?recognitionId=da2b99b2-9a5a-4860-9280-9ff06b8f54a8 HTTP/1.1
Host: diadoc-api.kontur.ru
Accept-Encoding: gzip
Authorization: DiadocAuth ddauth_api_client_id=oviontInform-ЗдесьID,ddauth_token=Здесь_токен
Accept: application/json

* The requested URL returned error: 500
* Closing connection #0
Ошибка вызова метода: GetRecognized
500