# HG changeset patch
# User Sergey Kandaurov <pluknet@nginx.com>
# Date 1674135496 -14400
# Node ID 90a310f3cee674fc2af1c4536cb3b22f77283ea6
# Parent  905b1704eb5491e31e73912b0441762bf34ad861
Tests: workaround for QUIC routing while reloading nginx.

Datagrams can be routed to a new worker process that lacks the connection
state resulting in a stateless reset.  Previously, the QUIC connection was
closed in tests on decryption failure including receiving a stateless reset,
which is not yet detected in HTTP3.pm.  The workaround is to ignore packets
that could not be decrypted including a stateless reset.  This is enough to
continue receiving packets from the old worker process, such as with GOAWAY.

diff -r 905b1704eb54 -r 90a310f3cee6 lib/Test/Nginx/HTTP3.pm
--- a/lib/Test/Nginx/HTTP3.pm	Wed Jan 18 16:04:33 2023 +0400
+++ b/lib/Test/Nginx/HTTP3.pm	Thu Jan 19 17:38:16 2023 +0400
@@ -1940,6 +1940,7 @@
 		return @data if $#data;
 		return if scalar @{$self->{frames_in}};
 
+again:
 		my $txt;
 
 		if (!length($self->{buf})) {
@@ -1955,7 +1956,10 @@
 		while ($self->{buf}) {
 			($level, $plaintext, $self->{buf}, $self->{token})
 				= $self->decrypt_aead($self->{buf});
-			return if !defined $plaintext;
+			if (!defined $plaintext) {
+				$self->{buf} = '';
+				goto again;
+			}
 			goto retry if $self->{token};
 			$self->handle_frames(parse_frames($plaintext), $level);
 			@data = $self->parse_stream();