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Setting RTPSource::sdes cname rejects '@'

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Setting RTPSource::sdes cname rejects '@'

Juan Navarro
Trying to set the "sdes" property into a GstRtpSession instance, the
command gst-launch-1.0 fails:

$ gst-launch-1.0 rtpsession name=r
sdes="application/x-rtp-source-sdes,cname=(string)user@host" ...
WARNING: erroneous pipeline: could not set property "sdes" in element
"r" to "application/x-rtp-source-sdes,cname=user@host"

The reason is that at some point, the '@' character is not recognized as
a valid one.
These cnames work fine: userhost, user_host, user+host.
But user@host doesn't work.

Driven by this bug report:
https://bugzilla.gnome.org/show_bug.cgi?id=779668 it seems that the
character '@' is not treated as a valid character in the macro
GST_ASCII_IS_STRING:

gst/gst_private.h:
#define GST_ASCII_IS_STRING(c) (g_ascii_isalnum((c)) || ((c) == '_') || \
     ((c) == '-') || ((c) == '+') || ((c) == '/') || ((c) == ':') || \
     ((c) == '.'))

I don't know if this is the reason that "user@host" is not recognized as
a valid string, I don't know the code to be sure that this is the case,
but it seems plausible.

Does this merit a new bug report?
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Re: Setting RTPSource::sdes cname rejects '@'

Juan Navarro
Solved thanks to the helpful tips of user <slomo> in IRC #gstreamer
Posting here for the remotely likely case that someone with the same
problem arrives here. Wouldn't hurt that this was documented, though.

This is a sample minimal working command with the correct syntax:

gst-launch-1.0 rtpsession
sdes="application/x-rtp-source-sdes,cname=(string)\"user\@host\""

Regards


On 29/03/17 15:34, Juan Navarro wrote:

> Trying to set the "sdes" property into a GstRtpSession instance, the
> command gst-launch-1.0 fails:
>
> $ gst-launch-1.0 rtpsession name=r
> sdes="application/x-rtp-source-sdes,cname=(string)user@host" ...
> WARNING: erroneous pipeline: could not set property "sdes" in element
> "r" to "application/x-rtp-source-sdes,cname=user@host"
>
> The reason is that at some point, the '@' character is not recognized
> as a valid one.
> These cnames work fine: userhost, user_host, user+host.
> But user@host doesn't work.
>
> Driven by this bug report:
> https://bugzilla.gnome.org/show_bug.cgi?id=779668 it seems that the
> character '@' is not treated as a valid character in the macro
> GST_ASCII_IS_STRING:
>
> gst/gst_private.h:
> #define GST_ASCII_IS_STRING(c) (g_ascii_isalnum((c)) || ((c) == '_') || \
>     ((c) == '-') || ((c) == '+') || ((c) == '/') || ((c) == ':') || \
>     ((c) == '.'))
>
> I don't know if this is the reason that "user@host" is not recognized
> as a valid string, I don't know the code to be sure that this is the
> case, but it seems plausible.
>
> Does this merit a new bug report?

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