[Bug 669724] souphttpsrc: doesn't support ipv6 link-local addresses

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=669724
  GStreamer | gst-plugins-good | unspecified

--- Comment #3 from Davy <realbrightster at gmail.com> 2012-02-10 05:50:38 UTC ---
fixed typo
"
Easily speaking, 
if the inet_pton() is failed, it’s a domain name so we need to resolve it
via getaddrinfo()
if the inet_pton() is succeeded, it’s a IP address so we don’t need to call
getaddrinfo()
"

(In reply to comment #2)
> glib problem.
> As you can see the log message,
> It’s a DNS lookup fail caused by link-local address including zone_id delimiter
> (%)
> It means that glib try to resolve link-local address, already resolved address,
> due to glib think it as a domain name.
> Let’s see the g_resolve_lookup_by_name_async at gio / gresolver.c
> At the first time, it checks whether the hostname is IP address or not. 
> In case of Linux, it calls inet_pton() after then see the return value, success
> or fail.
> Easily speaking, 
> if the inet_pton() is succeeded, it’s a domain name so we need to resolve it
> via getaddrinfo()
> if the inet_pton() is failed, it’s a IP address so we don’t need to call
> getaddrinfo()
> The problem is inet_pton() can’t recognize zone_id delimiter, %.
> You can find more detail in glibc library (system library, not a GTK’s glib),
> inet_pton.c or man inet_pton.
> As a consequence, if some IPv6 address contains zone_id (%), you never get HTTP
> connection due to DNS lookup fail.
> Davy

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