[gst-devel] Playbin unable to play http stream

Ron McOuat rmcouat at smartt.com
Wed Feb 24 07:05:05 CET 2010

I added user authentication to souphttpsrc around Nov 2008 when there 
was no means to provide basic or digest authentication on direct access 
to a URL and souphttpsrc did not accept the http://user@password 
embedded format either and still does not. I had a strong need for this 
capability in my own work. Looking at the libsoup documentation it 
looked like it was possible to service error code 
as regular authentication SOUP_STATUS_UNAUTHORIZED both of which are in 
function gst_soup_http_src_authenticate_cb() so I added properties 
proxy_id and proxy_pw to the souphttpsrc element properties to source 
the values for proxy authentication. Unless libsoup reads the 
environment for these values and could do proxy authentication 
automatically I know I didn't put the code in to read the environment to 
pick up the properties from there instead of from the added element 
properties. In retrospect using the environment is likely a better 
approach because proxy settings are often a system setting. I also have 
limited ability to test this since proxy is not part of my environment. 
I suppose setting up squid is all that is really needed and force a test 
environment to use the squid setup. My workload has prevented me from 
testing this further. Maybe the best approach is to file a bug report 
and if there is someone better skilled at using a proxy environment to 
find what is wrong with this? I believe libsoup has had a number of 
issues with proxy over time but think that is not an issue now but don't 
take my word for it, I was getting this from reading the libsoup 
discussion area and not actual testing.

Going back to the URL in the original request I tried the gst-launch 
command on a stock Ubuntu 9.10 Karmic system without a need for proxy 
and the pipeline says it got EOS during preroll and did not display the 
picture in a video sink which is not surprising since the URL content is 
only a single JPG image. I would normally associate using gstreamer with 
processing a sequence of video frames instead of just one image. Not to 
discourage you from gstreamer but grabbing a single image frame looks 
more like a file transfer job which libCurl you mention does quite well. 
I probably just don't know what you want to do with the image content 
after it is acquired so my comment is probably not valid.


On 10-02-23 8:52 PM, Debsu wrote:
> Hi Tim,
> You are right, that using souphttpsrc element is the better way of doing
> this. But in souphttpsrc element I am facing a strange problem.
> I am using playbin for display image which is nothing but a http source. But
> souphttpsrc gives me the error of "proxy-authentication failure" message,
> but http_proxy is already set in the environment variable. and also from
> commandline I can easily fetch that jpg file using libCurl.
> Regards,
> Deb

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