Problems in implementing responce for RTSP's SETUP request

Problems in implementing responce for RTSP's SETUP request

I'm implementing simple RTSP server that should stream mjpeg over rtsp.
The first problem I faced was the "hanging" RTSP client (i tried vlc and
openRTSP) when I respond with some response data: buffering issue with
java communicating vlc
However, that was easy to find out that the root of the problem was missed
double \r\n sequence at the end of the request. I have successfully coded
responses for OPTIONS and DESCRIBE, that are correctly handled on the
client.
I faced with the problem when tried to implement SETUP. When I output some
correctly formatted RTSP response to SETUP, both openRTSPvlc doesn't
handle the response as complete:
openRTSP rtsp://localhost:6666/autostream.mjpg
Opening connection to 127.0.0.1, port 6666...
...remote connection opened
Sending request: OPTIONS rtsp://localhost:6666/autostream.mjpg RTSP/1.0
CSeq: 2
User-Agent: openRTSP (LIVE555 Streaming Media v2013.04.30)
Received 158 new bytes of response data.
Received a complete OPTIONS response:
RTSP/1.0 200 OK
CSeq: 2
Public: OPTIONS, PAUSE, PLAY, SETUP, SET_PARAMETER, TEARDOWN
Server: GStreamer RTSP server
Date: Tue, 10 Sep 2013 19:56:53 GMT
Sending request: DESCRIBE rtsp://localhost:6666/autostream.mjpg RTSP/1.0
CSeq: 3
User-Agent: openRTSP (LIVE555 Streaming Media v2013.04.30)
Accept: application/sdp
Received 484 new bytes of response data.
Received a complete DESCRIBE response:
RTSP/1.0 200 OK
CSeq: 3
Content-Type: application/sdp
Content-Base: rtsp://localhost:6666/autostream.mjpeg/
Server: GStreamer RTSP server
Date: Tue, 10 Sep 2013 19:56:53 GMT
Content-Length: 279
v=0
o=- 1188340656180883 1 IN IP4 127.0.0.1
s=Session streamed with GStreamer
i=rtsp-server
e=NONE
t=0 0
a=tool:GStreamer
a=type:broadcast
a=control:*
a=range:npt=0,000000-119,961667
m=video 0 RTP/AVP 96
c=IN IP4 127.0.0.1
a=rtpmap:96 JPEG/90000
a=control:stream=0
(plus 2 additional bytes)
Opened URL "rtsp://localhost:6666/autostream.mjpg", returning a SDP
description:
v=0
o=- 1188340656180883 1 IN IP4 127.0.0.1
s=Session streamed with GStreamer
i=rtsp-server
e=NONE
t=0 0
a=tool:GStreamer
a=type:broadcast
a=control:*
a=range:npt=0,000000-119,961667
m=video 0 RTP/AVP 96
c=IN IP4 127.0.0.1
a=rtpmap:96 JPEG/90000
a=control:stream=0
Created receiver for "video/JPEG" subsession (client ports 57074-57075)
Sending request: SETUP rtsp://localhost:6666/autostream.mjpeg/stream=0
RTSP/1.0
CSeq: 4
User-Agent: openRTSP (LIVE555 Streaming Media v2013.04.30)
Transport: RTP/AVP;unicast;client_port=57074-57075
Received 215 new bytes of response data.
And nothing happens after that message. I assume, that something haappens
with RTP and RTCP behind the scenes, but what is the way how debug it? VLC
and openRTSP doesn't output detailed enough about it.
Any ideas?