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# The syslogd listens on 127.0.0.1 TCP socket.
# The client writes octet counting message that is too long.
# The syslogd writes it into a file and through a pipe.
# The syslogd passes it via UDP to the loghost.
# The server receives the message on its UDP socket.
# Find the message in client, file, syslogd, server log.
# Check that the file log contains the truncated message.
use strict;
use warnings;
use Socket qw(AF_INET IPPROTO_TCP TCP_NOPUSH);
use constant MAXLINE => 8192;
use constant MAX_UDPMSG => 1180;
our %args = (
client => {
connect => { domain => AF_INET, proto => "tcp", addr => "127.0.0.1",
port => 514 },
func => sub {
my $self = shift;
local $| = 1;
my $msg = generate_chars(MAXLINE+1);
printf "%05d %s", MAXLINE+1, $msg;
print STDERR "<<< $msg\n";
${$self->{syslogd}}->loggrep(qr/tcp logger .* use \d+ bytes/, 5)
or die ref($self), " syslogd did not use bytes";
setsockopt(\*STDOUT, IPPROTO_TCP, TCP_NOPUSH, pack('i', 1))
or die ref($self), " set TCP_NOPUSH failed: $!";
$msg = generate_chars(MAXLINE);
printf "%05d %s", MAXLINE+1, $msg;
print STDERR "<<< $msg\n";
setsockopt(\*STDOUT, IPPROTO_TCP, TCP_NOPUSH, pack('i', 0))
or die ref($self), " clear TCP_NOPUSH failed: $!";
${$self->{syslogd}}->loggrep("tcp logger .* incomplete", 5)
or die ref($self), " syslogd did not receive incomplete";
print "\n";
print STDERR "<<< \n";
write_shutdown($self);
},
loggrep => {
qr/<<< 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ/ => 2,
},
},
syslogd => {
options => ["-T", "127.0.0.1:514"],
loggrep => {
qr/octet counting /.(MAXLINE+1).qr/, incomplete frame, /.
qr/buffer \d+ bytes/ => 2,
qr/octet counting /.(MAXLINE+1).
qr/, use /.(MAXLINE+1).qr/ bytes/ => 2,
},
},
server => {
# >>> <13>Jul 6 22:33:32 0123456789ABC...fgh
loggrep => {
qr/>>> .{19} /.generate_chars(MAX_UDPMSG-20).qr/$/ => 2,
}
},
file => {
loggrep => {
generate_chars(MAXLINE).qr/$/ => 2,
},
},
pipe => { nocheck => 1 }, # XXX syslogd ignore short writes to pipe
tty => { nocheck => 1 }, # XXX syslogd ignore short writes to pipe
);
1;
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