X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fnetwork.c;h=34f89d96a39898cc4e27eb98024245fd686d1a65;hb=0b6de87f3d08326ee3200db8e16f3738df027ac0;hp=29e6708a0744682de69958c260b4f2b4c4ddd6ad;hpb=f9e4634b168f40a704d8b516f4d702e835f01588;p=collectd.git

diff --git a/src/network.c b/src/network.c
index 29e6708a..34f89d96 100644
--- a/src/network.c
+++ b/src/network.c
@@ -1,6 +1,6 @@
 /**
  * collectd - src/network.c
- * Copyright (C) 2005-2007  Florian octo Forster
+ * Copyright (C) 2005-2008  Florian octo Forster
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -178,12 +178,11 @@ static char         send_buffer[BUFF_SIZE];
 static char        *send_buffer_ptr;
 static int          send_buffer_fill;
 static value_list_t send_buffer_vl = VALUE_LIST_STATIC;
-static char         send_buffer_type[DATA_MAX_NAME_LEN];
 static pthread_mutex_t send_buffer_lock = PTHREAD_MUTEX_INITIALIZER;
 
 static c_avl_tree_t      *cache_tree = NULL;
 static pthread_mutex_t  cache_lock = PTHREAD_MUTEX_INITIALIZER;
-static time_t           cache_flush_last;
+static time_t           cache_flush_last = 0;
 static int              cache_flush_interval = 1800;
 
 /*
@@ -246,7 +245,7 @@ static int cache_flush (void)
 	return (0);
 } /* int cache_flush */
 
-static int cache_check (const char *type, const value_list_t *vl)
+static int cache_check (const value_list_t *vl)
 {
 	char key[1024];
 	time_t *value = NULL;
@@ -256,7 +255,7 @@ static int cache_check (const char *type, const value_list_t *vl)
 		return (-1);
 
 	if (format_name (key, sizeof (key), vl->host, vl->plugin,
-				vl->plugin_instance, type, vl->type_instance))
+				vl->plugin_instance, vl->type, vl->type_instance))
 		return (-1);
 
 	pthread_mutex_lock (&cache_lock);
@@ -425,33 +424,36 @@ static int write_part_number (char **ret_buffer, int *ret_buffer_len,
 static int write_part_string (char **ret_buffer, int *ret_buffer_len,
 		int type, const char *str, int str_len)
 {
-	char *packet_ptr;
-	int packet_len;
+	char *buffer;
+	int buffer_len;
 
-	part_header_t pkg_head;
+	uint16_t pkg_type;
+	uint16_t pkg_length;
 
 	int offset;
 
-	packet_len = sizeof (pkg_head) + str_len + 1;
-	if (*ret_buffer_len < packet_len)
+	buffer_len = 2 * sizeof (uint16_t) + str_len + 1;
+	if (*ret_buffer_len < buffer_len)
 		return (-1);
 
-	pkg_head.type = htons (type);
-	pkg_head.length = htons (packet_len);
+	pkg_type = htons (type);
+	pkg_length = htons (buffer_len);
 
-	packet_ptr = *ret_buffer;
+	buffer = *ret_buffer;
 	offset = 0;
-	memcpy (packet_ptr + offset, &pkg_head, sizeof (pkg_head));
-	offset += sizeof (pkg_head);
-	memcpy (packet_ptr + offset, str, str_len);
+	memcpy (buffer + offset, (void *) &pkg_type, sizeof (pkg_type));
+	offset += sizeof (pkg_type);
+	memcpy (buffer + offset, (void *) &pkg_length, sizeof (pkg_length));
+	offset += sizeof (pkg_length);
+	memcpy (buffer + offset, str, str_len);
 	offset += str_len;
-	memset (packet_ptr + offset, '\0', 1);
+	memset (buffer + offset, '\0', 1);
 	offset += 1;
 
-	assert (offset == packet_len);
+	assert (offset == buffer_len);
 
-	*ret_buffer = packet_ptr + packet_len;
-	*ret_buffer_len -= packet_len;
+	*ret_buffer = buffer + buffer_len;
+	*ret_buffer_len -= buffer_len;
 
 	return (0);
 } /* int write_part_string */
@@ -482,11 +484,11 @@ static int parse_part_values (void **ret_buffer, int *ret_buffer_len,
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
-	pkg_length = ntohs (tmp16);
+	pkg_type = ntohs (tmp16);
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
-	pkg_type = ntohs (tmp16);
+	pkg_length = ntohs (tmp16);
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
@@ -572,11 +574,11 @@ static int parse_part_number (void **ret_buffer, int *ret_buffer_len,
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
-	pkg_length = ntohs (tmp16);
+	pkg_type = ntohs (tmp16);
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
-	pkg_type = ntohs (tmp16);
+	pkg_length = ntohs (tmp16);
 
 	memcpy ((void *) &tmp64, buffer, sizeof (tmp64));
 	buffer += sizeof (tmp64);
@@ -612,11 +614,11 @@ static int parse_part_string (void **ret_buffer, int *ret_buffer_len,
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
-	pkg_length = ntohs (tmp16);
+	pkg_type = ntohs (tmp16);
 
 	memcpy ((void *) &tmp16, buffer, sizeof (tmp16));
 	buffer += sizeof (tmp16);
-	pkg_type = ntohs (tmp16);
+	pkg_length = ntohs (tmp16);
 
 	/* Check that packet fits in the input buffer */
 	if (pkg_length > buffer_len)
@@ -654,7 +656,9 @@ static int parse_part_string (void **ret_buffer, int *ret_buffer_len,
 	memcpy ((void *) output, (void *) buffer, output_len);
 	buffer += output_len;
 
-	if (output[output_len - 1] != '\0');
+	/* For some very weird reason '\0' doesn't do the trick on SPARC in
+	 * this statement. */
+	if (output[output_len - 1] != 0)
 	{
 		WARNING ("network plugin: parse_part_string: "
 				"Received string does not end "
@@ -673,26 +677,27 @@ static int parse_packet (void *buffer, int buffer_len)
 	int status;
 
 	value_list_t vl = VALUE_LIST_INIT;
-	char type[DATA_MAX_NAME_LEN];
+	notification_t n;
 
 	DEBUG ("network plugin: parse_packet: buffer = %p; buffer_len = %i;",
 			buffer, buffer_len);
 
 	memset (&vl, '\0', sizeof (vl));
-	memset (&type, '\0', sizeof (type));
+	memset (&n, '\0', sizeof (n));
 	status = 0;
 
-	while ((status == 0) && (buffer_len > sizeof (part_header_t)))
+	while ((status == 0) && (0 < buffer_len)
+			&& ((unsigned int) buffer_len > sizeof (part_header_t)))
 	{
 		uint16_t pkg_length;
 		uint16_t pkg_type;
 
-		memcpy ((void *) &pkg_length,
-				(void *) buffer,
-				sizeof (pkg_length));
 		memcpy ((void *) &pkg_type,
-				(void *) buffer + sizeof (pkg_length),
+				(void *) buffer,
 				sizeof (pkg_type));
+		memcpy ((void *) &pkg_length,
+				(void *) (buffer + sizeof (pkg_type)),
+				sizeof (pkg_length));
 
 		pkg_length = ntohs (pkg_length);
 		pkg_type = ntohs (pkg_type);
@@ -714,10 +719,10 @@ static int parse_packet (void *buffer, int buffer_len)
 			if ((vl.time > 0)
 					&& (strlen (vl.host) > 0)
 					&& (strlen (vl.plugin) > 0)
-					&& (strlen (type) > 0)
-					&& (cache_check (type, &vl) == 0))
+					&& (strlen (vl.type) > 0)
+					&& (cache_check (&vl) == 0))
 			{
-				plugin_dispatch_values (type, &vl);
+				plugin_dispatch_values (&vl);
 			}
 			else
 			{
@@ -730,14 +735,19 @@ static int parse_packet (void *buffer, int buffer_len)
 		else if (pkg_type == TYPE_TIME)
 		{
 			uint64_t tmp = 0;
-			status = parse_part_number (&buffer, &buffer_len, &tmp);
+			status = parse_part_number (&buffer, &buffer_len,
+					&tmp);
 			if (status == 0)
+			{
 				vl.time = (time_t) tmp;
+				n.time = (time_t) tmp;
+			}
 		}
 		else if (pkg_type == TYPE_INTERVAL)
 		{
 			uint64_t tmp = 0;
-			status = parse_part_number (&buffer, &buffer_len, &tmp);
+			status = parse_part_number (&buffer, &buffer_len,
+					&tmp);
 			if (status == 0)
 				vl.interval = (int) tmp;
 		}
@@ -745,31 +755,85 @@ static int parse_packet (void *buffer, int buffer_len)
 		{
 			status = parse_part_string (&buffer, &buffer_len,
 					vl.host, sizeof (vl.host));
-			DEBUG ("network plugin: parse_packet: vl.host = %s", vl.host);
+			if (status == 0)
+				sstrncpy (n.host, vl.host, sizeof (n.host));
 		}
 		else if (pkg_type == TYPE_PLUGIN)
 		{
 			status = parse_part_string (&buffer, &buffer_len,
 					vl.plugin, sizeof (vl.plugin));
-			DEBUG ("network plugin: parse_packet: vl.plugin = %s", vl.plugin);
+			if (status == 0)
+				sstrncpy (n.plugin, vl.plugin,
+						sizeof (n.plugin));
 		}
 		else if (pkg_type == TYPE_PLUGIN_INSTANCE)
 		{
 			status = parse_part_string (&buffer, &buffer_len,
-					vl.plugin_instance, sizeof (vl.plugin_instance));
-			DEBUG ("network plugin: parse_packet: vl.plugin_instance = %s", vl.plugin_instance);
+					vl.plugin_instance,
+					sizeof (vl.plugin_instance));
+			if (status == 0)
+				sstrncpy (n.plugin_instance,
+						vl.plugin_instance,
+						sizeof (n.plugin_instance));
 		}
 		else if (pkg_type == TYPE_TYPE)
 		{
 			status = parse_part_string (&buffer, &buffer_len,
-					type, sizeof (type));
-			DEBUG ("network plugin: parse_packet: type = %s", type);
+					vl.type, sizeof (vl.type));
+			if (status == 0)
+				sstrncpy (n.type, vl.type, sizeof (n.type));
 		}
 		else if (pkg_type == TYPE_TYPE_INSTANCE)
 		{
 			status = parse_part_string (&buffer, &buffer_len,
-					vl.type_instance, sizeof (vl.type_instance));
-			DEBUG ("network plugin: parse_packet: vl.type_instance = %s", vl.type_instance);
+					vl.type_instance,
+					sizeof (vl.type_instance));
+			if (status == 0)
+				sstrncpy (n.type_instance, vl.type_instance,
+						sizeof (n.type_instance));
+		}
+		else if (pkg_type == TYPE_MESSAGE)
+		{
+			status = parse_part_string (&buffer, &buffer_len,
+					n.message, sizeof (n.message));
+
+			if (status != 0)
+			{
+				/* do nothing */
+			}
+			else if ((n.severity != NOTIF_FAILURE)
+					&& (n.severity != NOTIF_WARNING)
+					&& (n.severity != NOTIF_OKAY))
+			{
+				INFO ("network plugin: "
+						"Ignoring notification with "
+						"unknown severity %i.",
+						n.severity);
+			}
+			else if (n.time <= 0)
+			{
+				INFO ("network plugin: "
+						"Ignoring notification with "
+						"time == 0.");
+			}
+			else if (strlen (n.message) <= 0)
+			{
+				INFO ("network plugin: "
+						"Ignoring notification with "
+						"an empty message.");
+			}
+			else
+			{
+				plugin_dispatch_notification (&n);
+			}
+		}
+		else if (pkg_type == TYPE_SEVERITY)
+		{
+			uint64_t tmp = 0;
+			status = parse_part_number (&buffer, &buffer_len,
+					&tmp);
+			if (status == 0)
+				n.severity = (int) tmp;
 		}
 		else
 		{
@@ -859,6 +923,16 @@ static int network_set_ttl (const sockent_t *se, const struct addrinfo *ai)
 static int network_bind_socket (const sockent_t *se, const struct addrinfo *ai)
 {
 	int loop = 0;
+	int yes  = 1;
+
+	/* allow multiple sockets to use the same PORT number */
+	if (setsockopt(se->fd, SOL_SOCKET, SO_REUSEADDR,
+				&yes, sizeof(yes)) == -1) {
+                char errbuf[1024];
+                ERROR ("setsockopt: %s", 
+                                sstrerror (errno, errbuf, sizeof (errbuf)));
+		return (-1);
+	}
 
 	DEBUG ("fd = %i; calling `bind'", se->fd);
 
@@ -1205,6 +1279,9 @@ static int network_receive (void)
 	int i;
 	int status;
 
+	receive_list_entry_t *private_list_head;
+	receive_list_entry_t *private_list_tail;
+
 	if (listen_sockets_num == 0)
 		network_add_listen_socket (NULL, NULL);
 
@@ -1214,6 +1291,9 @@ static int network_receive (void)
 		return (-1);
 	}
 
+	private_list_head = NULL;
+	private_list_tail = NULL;
+
 	while (listen_loop == 0)
 	{
 		status = poll (listen_sockets, listen_sockets_num, -1);
@@ -1254,7 +1334,8 @@ static int network_receive (void)
 				ERROR ("network plugin: malloc failed.");
 				return (-1);
 			}
-			memset (ent, '\0', sizeof (receive_list_entry_t));
+			memset (ent, 0, sizeof (receive_list_entry_t));
+			ent->next = NULL;
 
 			/* Hopefully this be optimized out by the compiler. It
 			 * might help prevent stupid bugs in the future though.
@@ -1264,22 +1345,49 @@ static int network_receive (void)
 			memcpy (ent->data, buffer, buffer_len);
 			ent->data_len = buffer_len;
 
-			pthread_mutex_lock (&receive_list_lock);
-			if (receive_list_head == NULL)
-			{
-				receive_list_head = ent;
-				receive_list_tail = ent;
-			}
+			if (private_list_head == NULL)
+				private_list_head = ent;
 			else
+				private_list_tail->next = ent;
+			private_list_tail = ent;
+
+			/* Do not block here. Blocking here has led to
+			 * insufficient performance in the past. */
+			if (pthread_mutex_trylock (&receive_list_lock) == 0)
 			{
-				receive_list_tail->next = ent;
-				receive_list_tail = ent;
+				if (receive_list_head == NULL)
+					receive_list_head = private_list_head;
+				else
+					receive_list_tail->next = private_list_head;
+				receive_list_tail = private_list_tail;
+
+				private_list_head = NULL;
+				private_list_tail = NULL;
+
+				pthread_cond_signal (&receive_list_cond);
+				pthread_mutex_unlock (&receive_list_lock);
 			}
-			pthread_cond_signal (&receive_list_cond);
-			pthread_mutex_unlock (&receive_list_lock);
 		} /* for (listen_sockets) */
 	} /* while (listen_loop == 0) */
 
+	/* Make sure everything is dispatched before exiting. */
+	if (private_list_head != NULL)
+	{
+		pthread_mutex_lock (&receive_list_lock);
+
+		if (receive_list_head == NULL)
+			receive_list_head = private_list_head;
+		else
+			receive_list_tail->next = private_list_head;
+		receive_list_tail = private_list_tail;
+
+		private_list_head = NULL;
+		private_list_tail = NULL;
+
+		pthread_cond_signal (&receive_list_cond);
+		pthread_mutex_unlock (&receive_list_lock);
+	}
+
 	return (0);
 }
 
@@ -1318,7 +1426,7 @@ static void network_send_buffer (const char *buffer, int buffer_len)
 } /* void network_send_buffer */
 
 static int add_to_buffer (char *buffer, int buffer_size,
-		value_list_t *vl_def, char *type_def,
+		value_list_t *vl_def,
 		const data_set_t *ds, const value_list_t *vl)
 {
 	char *buffer_orig = buffer;
@@ -1328,7 +1436,7 @@ static int add_to_buffer (char *buffer, int buffer_size,
 		if (write_part_string (&buffer, &buffer_size, TYPE_HOST,
 					vl->host, strlen (vl->host)) != 0)
 			return (-1);
-		strcpy (vl_def->host, vl->host);
+		sstrncpy (vl_def->host, vl->host, sizeof (vl_def->host));
 	}
 
 	if (vl_def->time != vl->time)
@@ -1352,7 +1460,7 @@ static int add_to_buffer (char *buffer, int buffer_size,
 		if (write_part_string (&buffer, &buffer_size, TYPE_PLUGIN,
 					vl->plugin, strlen (vl->plugin)) != 0)
 			return (-1);
-		strcpy (vl_def->plugin, vl->plugin);
+		sstrncpy (vl_def->plugin, vl->plugin, sizeof (vl_def->plugin));
 	}
 
 	if (strcmp (vl_def->plugin_instance, vl->plugin_instance) != 0)
@@ -1361,15 +1469,15 @@ static int add_to_buffer (char *buffer, int buffer_size,
 					vl->plugin_instance,
 					strlen (vl->plugin_instance)) != 0)
 			return (-1);
-		strcpy (vl_def->plugin_instance, vl->plugin_instance);
+		sstrncpy (vl_def->plugin_instance, vl->plugin_instance, sizeof (vl_def->plugin_instance));
 	}
 
-	if (strcmp (type_def, ds->type) != 0)
+	if (strcmp (vl_def->type, vl->type) != 0)
 	{
 		if (write_part_string (&buffer, &buffer_size, TYPE_TYPE,
-					ds->type, strlen (ds->type)) != 0)
+					vl->type, strlen (vl->type)) != 0)
 			return (-1);
-		strcpy (type_def, ds->type);
+		sstrncpy (vl_def->type, ds->type, sizeof (vl_def->type));
 	}
 
 	if (strcmp (vl_def->type_instance, vl->type_instance) != 0)
@@ -1378,7 +1486,7 @@ static int add_to_buffer (char *buffer, int buffer_size,
 					vl->type_instance,
 					strlen (vl->type_instance)) != 0)
 			return (-1);
-		strcpy (vl_def->type_instance, vl->type_instance);
+		sstrncpy (vl_def->type_instance, vl->type_instance, sizeof (vl_def->type_instance));
 	}
 	
 	if (write_part_values (&buffer, &buffer_size, ds, vl) != 0)
@@ -1395,8 +1503,7 @@ static void flush_buffer (void)
 	network_send_buffer (send_buffer, send_buffer_fill);
 	send_buffer_ptr  = send_buffer;
 	send_buffer_fill = 0;
-	memset (&send_buffer_vl, '\0', sizeof (send_buffer_vl));
-	memset (send_buffer_type, '\0', sizeof (send_buffer_type));
+	memset (&send_buffer_vl, 0, sizeof (send_buffer_vl));
 }
 
 static int network_write (const data_set_t *ds, const value_list_t *vl)
@@ -1406,7 +1513,7 @@ static int network_write (const data_set_t *ds, const value_list_t *vl)
 	/* If the value is already in the cache, we have received it via the
 	 * network. We write it again if forwarding is activated. It's then in
 	 * the cache and should we receive it again we will ignore it. */
-	status = cache_check (ds->type, vl);
+	status = cache_check (vl);
 	if ((network_config_forward == 0)
 			&& (status != 0))
 		return (0);
@@ -1415,7 +1522,7 @@ static int network_write (const data_set_t *ds, const value_list_t *vl)
 
 	status = add_to_buffer (send_buffer_ptr,
 			sizeof (send_buffer) - send_buffer_fill,
-			&send_buffer_vl, send_buffer_type,
+			&send_buffer_vl,
 			ds, vl);
 	if (status >= 0)
 	{
@@ -1429,7 +1536,7 @@ static int network_write (const data_set_t *ds, const value_list_t *vl)
 
 		status = add_to_buffer (send_buffer_ptr,
 				sizeof (send_buffer) - send_buffer_fill,
-				&send_buffer_vl, send_buffer_type,
+				&send_buffer_vl,
 				ds, vl);
 
 		if (status >= 0)
@@ -1473,7 +1580,10 @@ static int network_config (const char *key, const char *val)
 		fields_num = strsplit (val_cpy, fields, 3);
 		if ((fields_num != 1)
 				&& (fields_num != 2))
+		{
+			sfree (val_cpy);
 			return (1);
+		}
 		else if (fields_num == 2)
 		{
 			if ((service = strchr (fields[1], '.')) != NULL)
@@ -1486,6 +1596,8 @@ static int network_config (const char *key, const char *val)
 			network_add_listen_socket (node, service);
 		else
 			network_add_sending_socket (node, service);
+
+		sfree (val_cpy);
 	}
 	else if (strcasecmp ("TimeToLive", key) == 0)
 	{
@@ -1518,6 +1630,77 @@ static int network_config (const char *key, const char *val)
 	return (0);
 } /* int network_config */
 
+static int network_notification (const notification_t *n)
+{
+  char  buffer[BUFF_SIZE];
+  char *buffer_ptr = buffer;
+  int   buffer_free = sizeof (buffer);
+  int   status;
+
+  memset (buffer, '\0', sizeof (buffer));
+
+
+  status = write_part_number (&buffer_ptr, &buffer_free, TYPE_TIME,
+      (uint64_t) n->time);
+  if (status != 0)
+    return (-1);
+
+  status = write_part_number (&buffer_ptr, &buffer_free, TYPE_SEVERITY,
+      (uint64_t) n->severity);
+  if (status != 0)
+    return (-1);
+
+  if (strlen (n->host) > 0)
+  {
+    status = write_part_string (&buffer_ptr, &buffer_free, TYPE_HOST,
+	n->host, strlen (n->host));
+    if (status != 0)
+      return (-1);
+  }
+
+  if (strlen (n->plugin) > 0)
+  {
+    status = write_part_string (&buffer_ptr, &buffer_free, TYPE_PLUGIN,
+	n->plugin, strlen (n->plugin));
+    if (status != 0)
+      return (-1);
+  }
+
+  if (strlen (n->plugin_instance) > 0)
+  {
+    status = write_part_string (&buffer_ptr, &buffer_free,
+	TYPE_PLUGIN_INSTANCE,
+	n->plugin_instance, strlen (n->plugin_instance));
+    if (status != 0)
+      return (-1);
+  }
+
+  if (strlen (n->type) > 0)
+  {
+    status = write_part_string (&buffer_ptr, &buffer_free, TYPE_TYPE,
+	n->type, strlen (n->type));
+    if (status != 0)
+      return (-1);
+  }
+
+  if (strlen (n->type_instance) > 0)
+  {
+    status = write_part_string (&buffer_ptr, &buffer_free, TYPE_TYPE_INSTANCE,
+	n->type_instance, strlen (n->type_instance));
+    if (status != 0)
+      return (-1);
+  }
+
+  status = write_part_string (&buffer_ptr, &buffer_free, TYPE_MESSAGE,
+      n->message, strlen (n->message));
+  if (status != 0)
+    return (-1);
+
+  network_send_buffer (buffer, sizeof (buffer) - buffer_free);
+
+  return (0);
+} /* int network_notification */
+
 static int network_shutdown (void)
 {
 	listen_loop++;
@@ -1558,24 +1741,34 @@ static int network_shutdown (void)
 	plugin_unregister_write ("network");
 	plugin_unregister_shutdown ("network");
 
+	/* Let the init function do it's move again ;) */
+	cache_flush_last = 0;
+
 	return (0);
 } /* int network_shutdown */
 
 static int network_init (void)
 {
+	/* Check if we were already initialized. If so, just return - there's
+	 * nothing more to do (for now, that is). */
+	if (cache_flush_last != 0)
+		return (0);
+
 	plugin_register_shutdown ("network", network_shutdown);
 
 	send_buffer_ptr  = send_buffer;
 	send_buffer_fill = 0;
-	memset (&send_buffer_vl, '\0', sizeof (send_buffer_vl));
-	memset (send_buffer_type, '\0', sizeof (send_buffer_type));
+	memset (&send_buffer_vl, 0, sizeof (send_buffer_vl));
 
 	cache_tree = c_avl_create ((int (*) (const void *, const void *)) strcmp);
 	cache_flush_last = time (NULL);
 
 	/* setup socket(s) and so on */
 	if (sending_sockets != NULL)
+	{
 		plugin_register_write ("network", network_write);
+		plugin_register_notification ("network", network_notification);
+	}
 
 	if ((listen_sockets_num != 0) && (receive_thread_id == 0))
 	{
@@ -1608,9 +1801,32 @@ static int network_init (void)
 	return (0);
 } /* int network_init */
 
+/* 
+ * The flush option of the network plugin cannot flush individual identifiers.
+ * All the values are added to a buffer and sent when the buffer is full, the
+ * requested value may or may not be in there, it's not worth finding out. We
+ * just send the buffer if `flush'  is called - if the requested value was in
+ * there, good. If not, well, then there is nothing to flush.. -octo
+ */
+static int network_flush (int timeout, const char *identifier)
+{
+	pthread_mutex_lock (&send_buffer_lock);
+
+	if (((time (NULL) - cache_flush_last) >= timeout)
+			&& (send_buffer_fill > 0))
+	{
+		flush_buffer ();
+	}
+
+	pthread_mutex_unlock (&send_buffer_lock);
+
+	return (0);
+} /* int network_flush */
+
 void module_register (void)
 {
 	plugin_register_config ("network", network_config,
 			config_keys, config_keys_num);
 	plugin_register_init   ("network", network_init);
+	plugin_register_flush   ("network", network_flush);
 } /* void module_register */