[MOD] STR #4194: ipp backend endless loop

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[STR New]

The ipp backend could hang, when connection failed.

Error log:
D [27/Sep/2012:09:04:07 +0200] [Job 486392] Getting supported
attributes...
D [27/Sep/2012:09:04:07 +0200] [Job 486392] Get-Printer-Attributes:
server-error-internal-error (Connection reset by peer)
D [27/Sep/2012:09:04:07 +0200] [Job 486392] Get-Printer-Attributes
returned server-error-internal-error.
E [27/Sep/2012:09:04:07 +0200] [Job 486392] Unable to get printer status.

Restoring the connection and restarting the ipp service on the other side
didn't help.

Please check the attached patch.

Link: http://www.cups.org/str.php?L4194
Version: 1.5.4

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--- backend/ipp.c.orig	2012-09-27 18:23:17.000000000 +0200
+++ backend/ipp.c	2012-09-27 18:26:29.000000000 +0200
@@ -923,6 +923,9 @@
 	_cupsLangPrintFilter(stderr, "ERROR",
 	                     _("Unable to get printer status."));
         sleep(10);
+        if (ipp_status == IPP_INTERNAL_ERROR) {
+	  httpReconnect(http);
+        }
       }
 
       ippDelete(supported);