I don't believe cURL was designed for general network socket communication.
Here are two simple open source programs that may be helpful.

http://code.google.com/p/rtsprequest/
This program issues a sequence of RTSP requests using cURL to initiate a
video stream - similar to your code.

http://code.google.com/p/rtpreceive/
This program will receive the resulting stream of RTP video and, among other
things, decode the RTP data and retransmit it to a local port.

On Mon, Jul 11, 2011 at 12:51 PM, Michael Dale <michaeld_at_bbvcctv.com> wrote:

> Thankyou for your reply, you are correct the server is sending the data
> to port 1234 as requested by the transport message and wire shark confirms
> this again. ****
>
> So would I be right in saying that curl has no means of getting the data
> via any of its call backs? And if this is the case what would the suggested
> method be to receive the data? ****
>
> If I use the following ****
>
> sockFd = socket(AF_INET, SOCK_RAW, IP_PROTO_UDP); ****
>
> the connection fails and if I use ****
>
> sockFd = socket(AF_INET, SOCK_DGRAM, 0); ****
>
> the server seems to start a duplicate stream from another port ****
>
> ** **
>
> any help would be much appreciated I getting this sorted, as I would really
> like to get away from live555 ****
>
> ** **
>
> ** **
>
> cURL V7.21.7 loaded****
>
> request server options****
>
> RTSP: OPTIONS rtsp://192.168.1.131/live/???****
>
> RTSP/1.0 200 OK****
>
> CSeq: 1****
>
> Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE****
>
> ** **
>
> rtsp_describe****
>
> RTSP: DESCRIBE rtsp://192.168.1.131/live/???****
>
> Writing SDP to ‘???.sdp'****
>
> RTSP/1.0 200 OK****
>
> CSeq: 2****
>
> Content-Base: rtsp://192.168.1.131/live/???/****
>
> Content-Type: application/sdp****
>
> Content-Length: 327****
>
> ** **
>
> get_media_attribute****
>
> rtsp_setup****
>
> RTSP: SETUP rtsp://192.168.1.131/live/???/video****
>
> TRANSPORT RTP/AVP;unicast;client_port=1234-1235****
>
> RTSP/1.0 200 OK****
>
> CSeq: 3****
>
> Session: 1051070571****
>
> Transport:
> RTP/AVP;unicast;client_port=1234-1235;server_port=39500-39501;mode="PLAY";ssrc=25426848
> ****
>
> ** **
>
> rtsp_setup****
>
> RTSP: PLAY rtsp://192.168.1.131/live/???/****
>
> RTSP/1.0 200 OK****
>
> CSeq: 4****
>
> Session: 1051070571****
>
> RTP-Info: url=rtsp://192.168.1.131/live/???/video;seqno=33530****
>
> Range: npt=0.00-****
>
> ** **
>
> Regards Michael Dale****
>
>
> __________ Information from ESET NOD32 Antivirus, version of virus
> signature database 6284 (20110711) __________
>
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
> -------------------------------------------------------------------
> List admin: http://cool.haxx.se/list/listinfo/curl-library
> Etiquette: http://curl.haxx.se/mail/etiquette.html
>

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Received on 2011-07-12