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00_MQTT2_SERVER.pm: report error if protoNum unknown (Forum #111338)

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git-svn-id: https://svn.fhem.de/fhem/trunk@21977 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
rudolfkoenig 2020-05-20 07:47:01 +00:00
parent 4f688f0926
commit 47efd25344
1 changed files with 4 additions and 0 deletions
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fhem/FHEM/00_MQTT2_SERVER.pm
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@ -304,6 +304,10 @@ MQTT2_SERVER_Read($@)
$hash->{keepalive} = unpack('n', substr($pl, $off, 2)); $off += 2;
($hash->{cid}, $off) = MQTT2_SERVER_getStr($hash, $pl, $off);
if($hash->{protoNum} > 4) {
return MQTT2_SERVER_out($hash, pack("C*", 0x20, 2, 0, 1), $dump); # ERROR
}
my $desc = "keepAlive:$hash->{keepalive}";
if($hash->{cflags} & 0x04) { # Last Will & Testament
my ($wt, $wm);