[gst-devel] Playbin unable to play http stream

[Debsu]

Hi Ron,



I set the proxy, proxy user id and proxy passwd for authentication by
using the following callback:



static void cb_playbin_notify_source(GObject *obj, GParamSpec *param,
gpointer u_data)
{
    if (g_object_class_find_property(G_OBJECT_GET_CLASS(obj), "source"))
{
        GObject *source_element;
        g_object_get(obj, "source", &source_element, NULL);

        if
(g_object_class_find_property(G_OBJECT_GET_CLASS(source_element),
"proxy-id") && \

g_object_class_find_property(G_OBJECT_GET_CLASS(source_element),
"proxy-pw"))
        {
            g_object_set (source_element, "proxy", "proxy_ip",
"proxy-id", "user_id", "proxy-pw", "passwd", NULL);
        }
        g_object_unref(source_element);
    }
}

connect that callback with the playbin like this:
    g_signal_connect(G_OBJECT(playbin), "notify::source",
G_CALLBACK(cb_playbin_notify_source), NULL);

But every time I am still getting the "Proxy Authentication Required"
error. I set the http_proxy environment variable, but still getting the
same error.



Can you tell me why this error is coming again and again? What mistake
did I made?  I check the proxy using Curl, its fine.



Regards,

Deb

________________________________

From: Ron McOuat [via GStreamer-devel]
[mailto:ml-node+1566994-358805328-91831 at n4.nabble.com]
Sent: Wednesday, February 24, 2010 11:36 AM
To: Debojyoti Pal (WT01 - PES-Mobile-Auto-CE Practice)
Subject: Re: Playbin unable to play http stream



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
SOUP_STATUS_PROXY_AUTHENTICATION_REQUIRED in the same callback routine
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.

Ron

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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