loncom/loncnew - diff

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Diff for /loncom/loncnew between versions 1.94 and 1.110

version 1.94, 2011/01/20 11:19:37	version 1.110, 2024/06/14 18:49:41
Line 26	Line 26
# http://www.lon-capa.org/	# http://www.lon-capa.org/
#	#
#	#
# new lonc handles n request out bver m connections to londs.	# new lonc handles n request out over m connections to londs.
# This module is based on the Event class.	# This module is based on the Event class.
# Development iterations:	# Development iterations:
# - Setup basic event loop. (done)	# - Setup basic event loop. (done)
Line 74 my %perlvar = %{$perlvarref};	Line 74 my %perlvar = %{$perlvarref};

my %ChildPid; # by pid -> host.	my %ChildPid; # by pid -> host.
my %ChildHost; # by host.	my %ChildHost; # by host.
	my %ChildKeyMode; # by pid -> keymode
my %listening_to; # Socket->host table for who the parent	my %listening_to; # Socket->host table for who the parent
# is listening to.	# is listening to.
my %parent_dispatchers; # host-> listener watcher events.	my %parent_dispatchers; # host-> listener watcher events.
Line 93 my $executable = $0; # Get the full	Line 94 my $executable = $0; # Get the full
#	#
# The variables below are only used by the child processes.	# The variables below are only used by the child processes.
#	#
my $RemoteHost; # Name of host child is talking to.	my $RemoteHost; # Hostname of host child is talking to.
my $RemoteHostId; # default lonid of host child is talking to.	my $RemoteHostId; # lonid of host child is talking to.
	my $RemoteDefHostId; # default lonhostID of host child is talking to.
	my $RemoteLoncapaRev; # LON-CAPA version of host child is talking to,
	# if 2.12.0 or newer, format: X.Y.Z
my @all_host_ids;	my @all_host_ids;
my $UnixSocketDir= $perlvar{'lonSockDir'};	my $UnixSocketDir= $perlvar{'lonSockDir'};
my $IdleConnections = Stack->new(); # Set of idle connections	my $IdleConnections = Stack->new(); # Set of idle connections
Line 349 sub child_exit {	Line 353 sub child_exit {

=head2 Tick	=head2 Tick

Invoked each timer tick.	Invoked each timer tick.

=cut	=cut

Line 488 sub ServerToIdle {	Line 492 sub ServerToIdle {

Event callback for when a client socket is writable.	Event callback for when a client socket is writable.

This callback is established when a transaction reponse is	This callback is established when a transaction response is
avaiable from lond. The response is forwarded to the unix socket	available from lond. The response is forwarded to the unix socket
as it becomes writable in this sub.	as it becomes writable in this sub.

Parameters:	Parameters:
Line 559 sub ClientWritable {	Line 563 sub ClientWritable {
if($errno == POSIX::EWOULDBLOCK \|\|	if($errno == POSIX::EWOULDBLOCK \|\|
$errno == POSIX::EAGAIN \|\|	$errno == POSIX::EAGAIN \|\|
$errno == POSIX::EINTR) {	$errno == POSIX::EINTR) {
# No action taken?	# No action taken...the socket will be writable firing the event again
	# which will result in a retry of the write.
} else { # Unanticipated errno.	} else { # Unanticipated errno.
&Debug(5,"ClientWritable error or peer shutdown".$RemoteHost);	&Debug(5,"ClientWritable error or peer shutdown".$RemoteHost);
$Watcher->cancel; # Stop the watcher.	$Watcher->cancel; # Stop the watcher.
Line 588 Parameters:	Line 593 Parameters:

=item Socket	=item Socket

Socket on which the lond transaction occured. This is a	Socket on which the lond transaction occurred. This is a
LondConnection. The data received is in the TransactionReply member.	LondConnection. The data received are in the TransactionReply member.

=item Transaction	=item Transaction

Line 629 sub CompleteTransaction {	Line 634 sub CompleteTransaction {

=item data	=item data

The data to send to apached client.	The data to send to apache client.

=cut	=cut

Line 668 Parameters:	Line 673 Parameters:
=item client	=item client

The LondTransaction we are failing.	The LondTransaction we are failing.


=cut	=cut

Line 740 Parameters:	Line 744 Parameters:

The socket to kill off.	The socket to kill off.

=item Restart	=item restart

nonzero if we are allowed to create a new connection.	non-zero if we are allowed to create a new connection.

=cut	=cut

sub KillSocket {	sub KillSocket {
my $Socket = shift;	my $Socket = shift;
	my $restart = shift;

Log("WARNING", "Shutting down a socket");	Log("WARNING", "Shutting down a socket");
$Socket->Shutdown();	$Socket->Shutdown();
Line 764 sub KillSocket {	Line 769 sub KillSocket {
if(exists($ActiveConnections{$Socket})) {	if(exists($ActiveConnections{$Socket})) {
$ActiveConnections{$Socket}->cancel;	$ActiveConnections{$Socket}->cancel;
delete($ActiveConnections{$Socket});	delete($ActiveConnections{$Socket});
$ConnectionCount--;	# Decrement ConnectionCount unless we will immediately
	# re-connect (i.e., $restart is true), because this was
	# a connection where the SSL channel for exchange of the
	# shared key failed, and we may use an insecure channel.
	unless ($restart) {
	$ConnectionCount--;
	}
if ($ConnectionCount < 0) { $ConnectionCount = 0; }	if ($ConnectionCount < 0) { $ConnectionCount = 0; }
}	}
# If the connection count has gone to zero and there is work in the	# If the connection count has gone to zero and there is work in the
# work queue, the work all gets failed with con_lost.	# work queue, the work all gets failed with con_lost.
#	#

if($ConnectionCount == 0) {	if($ConnectionCount == 0) {
	$LondConnecting = 0; # No connections so also not connecting.
EmptyQueue();	EmptyQueue();
CloseAllLondConnections; # Should all already be closed but...	CloseAllLondConnections(); # Should all already be closed but...
	&clear_childpid($$);
}	}
UpdateStatus();	UpdateStatus();
}	}
Line 786 is readable. The action is state depend	Line 800 is readable. The action is state depend

=head3 State=Initialized	=head3 State=Initialized

We''re waiting for the challenge, this is a no-op until the	We are waiting for the challenge, this is a no-op until the
state changes.	state changes.

=head3 State=Challenged	=head3 State=Challenged
Line 796 The connection must echo the challenge b	Line 810 The connection must echo the challenge b

=head3 State=ChallengeReplied	=head3 State=ChallengeReplied

The challenge has been replied to. The we are receiveing the	The challenge has been replied to. Then we are receiving the
'ok' from the partner.	'ok' from the partner.

=head3 State=ReadingVersionString	=head3 State=ReadingVersionString
Line 822 The the key has been requested, now we a	Line 836 The the key has been requested, now we a
=head3 State=Idle	=head3 State=Idle

The encryption key has been negotiated or we have finished	The encryption key has been negotiated or we have finished
reading data from the a transaction. If the callback data has	reading data from the a transaction. If the callback data have
a client as well as the socket iformation, then we are	a client as well as the socket information, then we are
doing a transaction and the data received is relayed to the client	doing a transaction and the data received are relayed to the client
before the socket is put on the idle list.	before the socket is put on the idle list.

=head3 State=SendingRequest	=head3 State=SendingRequest
Line 841 to readable to receive the reply.	Line 855 to readable to receive the reply.
The parameter to this function are:	The parameter to this function are:

The event. Implicit in this is the watcher and its data. The data	The event. Implicit in this is the watcher and its data. The data
contains at least the lond connection object and, if a	contain at least the lond connection object and, if a
transaction is in progress, the socket attached to the local client.	transaction is in progress, the socket attached to the local client.

=cut	=cut
Line 869 sub LondReadable {	Line 883 sub LondReadable {

Log("WARNING",	Log("WARNING",
"Lond connection lost.");	"Lond connection lost.");
	my $state_on_exit = $Socket->GetState();
if(exists($ActiveTransactions{$Socket})) {	if(exists($ActiveTransactions{$Socket})) {
FailTransaction($ActiveTransactions{$Socket});	FailTransaction($ActiveTransactions{$Socket});
} else {	} else {
# Socket is connecting and failed... need to mark	# Socket is connecting and failed... need to mark
# no longer connecting.	# no longer connecting.

$LondConnecting = 0;	$LondConnecting = 0;
}	}
$Watcher->cancel();	$Watcher->cancel();
KillSocket($Socket);	if ($state_on_exit eq 'ReInitNoSSL') {
$ConnectionRetriesLeft--; # Counts as connection failure	# SSL certificate verification failed, and insecure connection
	# allowed. Send restart arg to KillSocket(), so EmptyQueue()
	# is not called, as we still hope to process queued request.

	KillSocket($Socket,1);

	# Re-initiate creation of Lond Connection for use with queued
	# request.

	ShowStatus("Connected to ".$RemoteHost);
	Log("WARNING","No SSL channel (verification failed), will try with insecure channel");
	&MakeLondConnection(1);

	} else {
	KillSocket($Socket);
	$ConnectionRetriesLeft--; # Counts as connection failure
	}
return;	return;
}	}
SocketDump(6,$Socket);	SocketDump(6,$Socket);
Line 890 sub LondReadable {	Line 920 sub LondReadable {
if($State eq "Initialized") {	if($State eq "Initialized") {


	} elsif ($State eq "ReInitNoSSL") {

} elsif ($State eq "ChallengeReceived") {	} elsif ($State eq "ChallengeReceived") {
# The challenge must be echoed back; The state machine	# The challenge must be echoed back; The state machine
# in the connection takes care of setting that up. Just	# in the connection takes care of setting that up. Just
Line 926 sub LondReadable {	Line 958 sub LondReadable {
} elsif ($State eq "ReceivingKey") {	} elsif ($State eq "ReceivingKey") {

} elsif ($State eq "Idle") {	} elsif ($State eq "Idle") {

	if ($ConnectionCount == 1) {
	# Write child Pid file to keep track of ssl and insecure
	# connections

	&record_childpid($Socket);
	}

# This is as good a spot as any to get the peer version	# This is as good a spot as any to get the peer version
# string:	# string:

Line 946 sub LondReadable {	Line 985 sub LondReadable {
CompleteTransaction($Socket,	CompleteTransaction($Socket,
$ActiveTransactions{$Socket});	$ActiveTransactions{$Socket});
} else {	} else {
Log("SUCCESS", "Connection ".$ConnectionCount." to "	my $count = $Socket->GetClientData();
	Log("SUCCESS", "Connection ".$count." to "
.$RemoteHost." now ready for action");	.$RemoteHost." now ready for action");
}	}
ServerToIdle($Socket); # Next work unit or idle.	ServerToIdle($Socket); # Next work unit or idle.
Line 983 event. The action taken is very state d	Line 1023 event. The action taken is very state d
=head3 State = Connected	=head3 State = Connected

The connection is in the process of sending the 'init' hailing to the	The connection is in the process of sending the 'init' hailing to the
lond on the remote end. The connection object''s Writable member is	lond on the remote end. The Writable member of the connection object
called. On error, ConnectionError is called to destroy the connection	is called. On error, call ConnectionError to destroy the connection
and remove it from the ActiveConnections hash	and remove it from the ActiveConnections hash.

=head3 Initialized	=head3 Initialized

Line 1090 sub LondWritable {	Line 1130 sub LondWritable {

$Watcher->cb(\&LondReadable);	$Watcher->cb(\&LondReadable);
$Watcher->poll("r");	$Watcher->poll("r");

	} elsif ($State eq "ReInitNoSSL") {

} elsif ($State eq "ChallengeReceived") {	} elsif ($State eq "ChallengeReceived") {
# We received the challenge, now we	# We received the challenge, now we
# are echoing it back. This is a no-op,	# are echoing it back. This is a no-op,
Line 1194 sub QueueDelayed {	Line 1236 sub QueueDelayed {
=head2 MakeLondConnection	=head2 MakeLondConnection

Create a new lond connection object, and start it towards its initial	Create a new lond connection object, and start it towards its initial
idleness. Once idle, it becomes elligible to receive transactions	idleness. Once idle, it becomes eligible to receive transactions
from the work queue. If the work queue is not empty when the	from the work queue. If the work queue is not empty when the
connection is completed and becomes idle, it will dequeue an entry and	connection is completed and becomes idle, it will dequeue an entry and
start off on it.	start off on it.

=cut	=cut

sub MakeLondConnection {	sub MakeLondConnection {
	my ($restart) = @_;
Debug(4,"MakeLondConnection to ".GetServerHost()." on port "	Debug(4,"MakeLondConnection to ".GetServerHost()." on port "
.GetServerPort());	.GetServerPort());

my $Connection = LondConnection->new(&GetServerHost(),	my $Connection = LondConnection->new(&GetServerHost(),
&GetServerPort(),	&GetServerPort(),
&GetHostId());	&GetHostId(),
	&GetDefHostId(),
	&GetLoncapaRev());

if($Connection eq undef) {	if($Connection eq undef) {
Log("CRITICAL","Failed to make a connection with lond.");	Log("CRITICAL","Failed to make a connection with lond.");
$ConnectionRetriesLeft--;	$ConnectionRetriesLeft--;
return 0; # Failure.	return 0; # Failure.
} else {	} else {

$LondConnecting = 1; # Connection in progress.	$LondConnecting = 1; # Connection in progress.
# The connection needs to have writability	# The connection needs to have writability
# monitored in order to send the init sequence	# monitored in order to send the init sequence
Line 1239 sub MakeLondConnection {	Line 1283 sub MakeLondConnection {
if ($ConnectionCount == 0) {	if ($ConnectionCount == 0) {
&SetupTimer; # Need to handle timeouts with connections...	&SetupTimer; # Need to handle timeouts with connections...
}	}
$ConnectionCount++;	unless ($restart) {
	$ConnectionCount++;
	}
	$Connection->SetClientData($ConnectionCount);
Debug(4, "Connection count = ".$ConnectionCount);	Debug(4, "Connection count = ".$ConnectionCount);
if($ConnectionCount == 1) { # First Connection:	if($ConnectionCount == 1) { # First Connection:
QueueDelayed;	QueueDelayed;
}	}
Log("SUCESS", "Created connection ".$ConnectionCount	Log("SUCCESS", "Created connection ".$ConnectionCount
." to host ".GetServerHost());	." to host ".GetServerHost());
return 1; # Return success.	return 1; # Return success.
}	}
Line 1265 reply.	Line 1312 reply.

=item $Client	=item $Client

Connection to the client that is making this request We got the	Connection to the client that is making this request. We got the
request from this socket, and when the request has been relayed to	request from this socket, and when the request has been relayed to
lond and we get a reply back from lond it will get sent to this	lond and we get a reply back from lond it will get sent to this
socket.	socket.
Line 1351 sub QueueTransaction {	Line 1398 sub QueueTransaction {
}	}
}	}

#-------------------------- Lonc UNIX socket handling ---------------------	#-------------------------- Lonc UNIX socket handling -------------------

=pod	=pod

=head2 ClientRequest	=head2 ClientRequest

Callback that is called when data can be read from the UNIX domain	Callback that is called when data can be read from the UNIX domain
socket connecting us with an apache server process.	socket connecting us with an apache server process.

Line 1455 sub accept_client {	Line 1502 sub accept_client {
Callback that is called when a connection is received on the unix	Callback that is called when a connection is received on the unix
socket for a new client of lonc. The callback is parameterized by the	socket for a new client of lonc. The callback is parameterized by the
event.. which is a-priori assumed to be an io event, and therefore has	event.. which is a-priori assumed to be an io event, and therefore has
an fd member that is the Listener socket. We Accept the connection	an fd member that is the Listener socket. We accept the connection
and register a new event on the readability of that socket:	and register a new event on the readability of that socket:

=cut	=cut
Line 1506 sub GetServerHost {	Line 1553 sub GetServerHost {

=pod	=pod

=head2 GetServerId	=head2 GetHostId

Returns the hostid whose lond we talk with.	Returns the hostid whose lond we talk with.

Line 1518 sub GetHostId {	Line 1565 sub GetHostId {

=pod	=pod

	=head2 GetDefHostId

	Returns the default hostid for the node whose lond we talk with.

	=cut

	sub GetDefHostId { # Setup by the fork.
	return $RemoteDefHostId;
	}

	=pod

	=head2 GetLoncapaRev

	Returns the LON-CAPA version for the node whose lond we talk with.

	=cut

	sub GetLoncapaRev {
	return $RemoteLoncapaRev; # Setup by the fork.
	}

	=pod

=head2 GetServerPort	=head2 GetServerPort

Returns the lond port number.	Returns the lond port number.
Line 1535 sub GetServerPort {	Line 1606 sub GetServerPort {
Setup a lonc listener event. The event is called when the socket	Setup a lonc listener event. The event is called when the socket
becomes readable.. that corresponds to the receipt of a new	becomes readable.. that corresponds to the receipt of a new
connection. The event handler established will accept the connection	connection. The event handler established will accept the connection
(creating a communcations channel), that int turn will establish	(creating a communications channel), that in turn will establish
another event handler to subess requests.	another event handler to subess requests.

=head2 Parameters:	=head2 Parameters:
Line 1648 sub SignalledToDeath {	Line 1719 sub SignalledToDeath {
."died through "."\"$signal\"");	."died through "."\"$signal\"");
#LogPerm("F:lonc: $$ on $RemoteHost signalled to death: "	#LogPerm("F:lonc: $$ on $RemoteHost signalled to death: "
# ."\"$signal\"");	# ."\"$signal\"");
	&clear_childpid($$);
exit 0;	exit 0;

}	}
Line 1675 sub ToggleDebug {	Line 1747 sub ToggleDebug {

This sub implements a child process for a single lonc daemon.	This sub implements a child process for a single lonc daemon.
Optional parameter:	Optional parameter:
$socket - if provided, this is a socket already open for listen	$socket - if provided, this is a socket already open for listening
on the client socket. Otherwise, a new listen is set up.	on the client socket. Otherwise, a new listener is set up.

=cut	=cut

Line 1778 sub ChildProcess {	Line 1850 sub ChildProcess {
# Create a new child for host passed in:	# Create a new child for host passed in:

sub CreateChild {	sub CreateChild {
my ($host, $hostid) = @_;	my ($host, $hostid, $defhostid, $loncaparev) = @_;

my $sigset = POSIX::SigSet->new(SIGINT);	my $sigset = POSIX::SigSet->new(SIGINT);
sigprocmask(SIG_BLOCK, $sigset);	sigprocmask(SIG_BLOCK, $sigset);
Line 1793 sub CreateChild {	Line 1865 sub CreateChild {
undef(@all_host_ids);	undef(@all_host_ids);
} else { # child.	} else { # child.
$RemoteHostId = $hostid;	$RemoteHostId = $hostid;
	$RemoteDefHostId = $defhostid;
	$RemoteLoncapaRev = $loncaparev;
ShowStatus("Connected to ".$RemoteHost);	ShowStatus("Connected to ".$RemoteHost);
$SIG{INT} = 'DEFAULT';	$SIG{INT} = 'DEFAULT';
sigprocmask(SIG_UNBLOCK, $sigset);	sigprocmask(SIG_UNBLOCK, $sigset);
Line 1858 sub get_remote_hostname {	Line 1932 sub get_remote_hostname {

&Debug(5,"Creating child for $data (parent_client_connection)");	&Debug(5,"Creating child for $data (parent_client_connection)");
(my $hostname,my $lonid,@all_host_ids) = split(':',$data);	(my $hostname,my $lonid,@all_host_ids) = split(':',$data);
	my $remotelcrev;
	if ((scalar(@all_host_ids) > 1) && ($all_host_ids[0] =~ /^\d+\.\d+\.[\w.]+$/)) {
	$remotelcrev = shift(@all_host_ids);
	}
$ChildHost{$hostname}++;	$ChildHost{$hostname}++;
if ($ChildHost{$hostname} == 1) {	if ($ChildHost{$hostname} == 1) {
&CreateChild($hostname,$lonid);	&CreateChild($hostname,$lonid,$all_host_ids[-1],$remotelcrev);
} else {	} else {
&Log('WARNING',"Request for a second child on $hostname");	&Log('WARNING',"Request for a second child on $hostname");
}	}
Line 1968 sub server_died {	Line 2046 sub server_died {
my $host = $ChildPid{$pid};	my $host = $ChildPid{$pid};
if($host) { # It's for real...	if($host) { # It's for real...
&Debug(9, "Caught sigchild for $host");	&Debug(9, "Caught sigchild for $host");
	&clear_childpid($pid);
delete($ChildPid{$pid});	delete($ChildPid{$pid});
delete($ChildHost{$host});	delete($ChildHost{$host});
&parent_clean_up($host);	&parent_clean_up($host);
Line 2076 die "Main Event loop exited: $ret";	Line 2155 die "Main Event loop exited: $ret";
=head1 CheckKids	=head1 CheckKids

Since kids do not die as easily in this implementation	Since kids do not die as easily in this implementation
as the previous one, there is no need to restart the	as the previous one, there is no need to restart the
dead ones (all dead kids get restarted when they die!!)	dead ones (all dead kids get restarted when they die!!)
The only thing this function does is to pass USR1 to the	The only thing this function does is to pass USR1 to the
kids so that they report their status.	kids so that they report their status.
Line 2138 sub UpdateKids {	Line 2217 sub UpdateKids {
# (lost unless they are critical).	# (lost unless they are critical).

&KillThemAll();	&KillThemAll();
	LondConnection->ResetReadConfig();
	ShowStatus('Parent keeping the flock');
}	}


Line 2146 sub UpdateKids {	Line 2227 sub UpdateKids {
=head1 Restart	=head1 Restart

Signal handler for HUP... all children are killed and	Signal handler for HUP... all children are killed and
we self restart. This is an el-cheapo way to re read	we self restart. This is an el-cheapo way to re-read
the config file.	the config file.

=cut	=cut

sub Restart {	sub Restart {
&KillThemAll; # First kill all the children.	&KillThemAll; # First kill all the children.
	LondConnection->ResetReadConfig();
Log("CRITICAL", "Restarting");	Log("CRITICAL", "Restarting");
my $execdir = $perlvar{'lonDaemons'};	my $execdir = $perlvar{'lonDaemons'};
unlink("$execdir/logs/lonc.pid");	unlink("$execdir/logs/lonc.pid");
Line 2181 sub KillThemAll {	Line 2263 sub KillThemAll {
ShowStatus("Nicely Killing lonc for $serving pid = $pid");	ShowStatus("Nicely Killing lonc for $serving pid = $pid");
Log("CRITICAL", "Nicely Killing lonc for $serving pid = $pid");	Log("CRITICAL", "Nicely Killing lonc for $serving pid = $pid");
kill 'QUIT' => $pid;	kill 'QUIT' => $pid;
	&clear_childpid($pid);
}	}
ShowStatus("Finished killing child processes off.");	ShowStatus("Finished killing child processes off.");
}	}
Line 2200 sub really_kill_them_all_dammit	Line 2283 sub really_kill_them_all_dammit
Log("CRITICAL", "Nastily killing lonc for $serving pid = $pid");	Log("CRITICAL", "Nastily killing lonc for $serving pid = $pid");
kill 'KILL' => $pid;	kill 'KILL' => $pid;
delete($ChildPid{$pid});	delete($ChildPid{$pid});
	delete($ChildKeyMode{$pid});
my $execdir = $perlvar{'lonDaemons'};	my $execdir = $perlvar{'lonDaemons'};
unlink("$execdir/logs/lonc.pid");	unlink("$execdir/logs/lonc.pid");
}	}
Line 2228 sub Terminate {	Line 2312 sub Terminate {

}	}

	=pod

	=cut

sub my_hostname {	sub my_hostname {
use Sys::Hostname;	use Sys::Hostname::FQDN();
my $name = &hostname();	my $name = Sys::Hostname::FQDN::fqdn();
&Debug(9,"Name is $name");	&Debug(9,"Name is $name");
return $name;	return $name;
}	}

	sub record_childpid {
	my ($Socket) = @_;
	my $docdir = $perlvar{'lonDocRoot'};
	my $authmode = $Socket->GetKeyMode();
	my $peer = $Socket->PeerLoncapaHim();
	if (($authmode eq 'ssl') \|\| ($authmode eq 'insecure')) {
	my $childpid = $$;
	if ($childpid) {
	unless (exists($ChildKeyMode{$childpid})) {
	$ChildKeyMode{$childpid} = $authmode;
	}
	if (-d "$docdir/lon-status/loncchld") {
	unless (-e "$docdir/lon-status/loncchld/$childpid") {
	if (open (my $pidfh,'>',"$docdir/lon-status/loncchld/$childpid")) {
	print $pidfh "$peer:$authmode\n";
	close($pidfh);
	}
	}
	}
	}
	}
	return;
	}

	sub clear_childpid {
	my ($childpid) = @_;
	my $docdir = $perlvar{'lonDocRoot'};
	if (-d "$docdir/lon-status/loncchld") {
	if ($childpid =~ /^\d+$/) {
	if (($ChildKeyMode{$childpid} eq 'insecure') \|\|
	($ChildKeyMode{$childpid} eq 'ssl')) {
	if (-e "$docdir/lon-status/loncchld/$childpid") {
	unlink("$docdir/lon-status/loncchld/$childpid");
	}
	}
	}
	}
	if (exists($ChildKeyMode{$childpid})) {
	delete($ChildKeyMode{$childpid});
	}
	return;
	}

=pod	=pod

=head1 Theory	=head1 Theory
Line 2292 If there are pending transactions in the	Line 2423 If there are pending transactions in the
they are failed (saved if critical). If the connection	they are failed (saved if critical). If the connection
retry count gets exceeded by this, the	retry count gets exceeded by this, the
remote host is marked as dead.	remote host is marked as dead.
Called when timeouts occured during the connection and	Called when timeouts occurred during the connection and
connection dialog with a remote host.	connection dialog with a remote host.

=item Critical Host makred DEAD <hostname>	=item Critical Host makred DEAD <hostname>
Line 2339 connection or died. This should be foll	Line 2470 connection or died. This should be foll

"WARNING Failing transaction..." msgs for each in-flight or queued transaction.	"WARNING Failing transaction..." msgs for each in-flight or queued transaction.

	=item WARNING No SSL channel (verification failed), will try with insecure channel.

	Called when promotion of a socket to SSL failed because SSL certificate verification failed.
	Domain configuration must also permit insecure channel use for key exchange. Connection
	negotiation will start again from the beginning, but with Authentication Mode not set to ssl.

=item INFO Connected to lond version: <version>	=item INFO Connected to lond version: <version>

When connection negotiation is complete, the lond version is requested and logged here.	When connection negotiation is complete, the lond version is requested and logged here.
Line 2419 the event processing loop is entered.	Line 2556 the event processing loop is entered.
=item INFO Updating connections via SIGUSR2	=item INFO Updating connections via SIGUSR2

SIGUSR2 received. The original code would kill all clients, re-read the host file,	SIGUSR2 received. The original code would kill all clients, re-read the host file,
then restart children for each host. Now that childrean aree started on demand, this	then restart children for each host. Now that children are started on demand, this
just kills all child processes and lets requests start them as needed again.	just kills all child processes and lets requests start them as needed again.


Line 2430 SigHUP received. all the children are k	Line 2567 SigHUP received. all the children are k
=item CRITICAL Nicely killing lonc for host pid = <pid>	=item CRITICAL Nicely killing lonc for host pid = <pid>

Attempting to kill the child that is serving the specified host (pid given) cleanly via	Attempting to kill the child that is serving the specified host (pid given) cleanly via
SIGQUIT The child should handle that, clean up nicely and exit.	SIGQUIT. The child should handle that, clean up nicely and exit.

=item CRITICAL Nastily killing lonc for host pid = <pid>	=item CRITICAL Nastily killing lonc for host pid = <pid>

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.94
changed lines
	Added in v.1.110