use single net pkts

network.c

@@ -15,40 +15,64 @@
 #include "plugins.h"
 #include "rrdtool.h"
 
-#define BUFSIZE 1024
+#define BUFSIZE 8192
 
 static struct sockaddr_in fwd_sa;
 static int fwd_sock;
 
 // todo: never freed..
 static char *tx_buf, *rx_buf;
+static int tx_pos;
 
 int net_submit(char *hostname, char *plugin, char *filename, int ds_id, char *data)
 {
-	int size = snprintf(tx_buf, BUFSIZE, "%s:%s:%s:%d %s", hostname, plugin, filename, ds_id, data);
-	if (size < 0 || size >= BUFSIZE) {
+	int size = snprintf(tx_buf + tx_pos, BUFSIZE - tx_pos, "%s:%s:%s:%d %s\n",
+				hostname, plugin, filename, ds_id, data);
+
+	if (size < 0 || size >= BUFSIZE - tx_pos) {
 		log_print(LOG_ERROR, "net_submit(): arguments too long");
+		// TODO: retry with flushed buffer?
 		return -1;
 	}
 
-	sendto(fwd_sock, tx_buf, size +1, 0, (struct sockaddr *)&fwd_sa, sizeof(fwd_sa));
+	tx_pos += size;
+	return 0;
+}
+
+int net_submit_flush()
+{
+	if (tx_pos != 0)
+		sendto(fwd_sock, tx_buf, tx_pos, 0, (struct sockaddr *)&fwd_sa, sizeof(fwd_sa));
+
+	tx_pos = 0;
 	return 0;
 }
 
 int net_receive(int socket)
 {
-	recv(socket, rx_buf, BUFSIZE, 0);
+	int size = recv(socket, rx_buf, BUFSIZE, 0);
+	int rx_pos = 0;
+
+	char *delim;
+	while ((delim = memchr(rx_buf + rx_pos, '\n', size - rx_pos))) {
+		*delim = '\0';
 
 		char *data[2], *part[4];
-	int ret = strsplit(rx_buf, " ", data, 2);
-	if (ret != 2)
-		return -1;
+		int ret = strsplit(rx_buf + rx_pos, " ", data, 2);
+		if (ret != 2) {
+			log_print(LOG_ERROR, "net_receive() abort data-split");
+			continue;
+		}
 
 		ret = strsplit(data[0], ":", part, 4);
-	if (ret != 4)
-		return -1;
-
+		if (ret != 4) {
+			log_print(LOG_ERROR, "net_receive() abort header-split");
+			continue;
+		}
 		rrd_submit(part[0], part[1], part[2], atoi(part[3]), data[1]);
+
+		rx_pos = (delim - rx_buf) +1;
+	}
 	return 0;
 }
 
@@ -64,6 +88,8 @@ int net_init_cli()
 		return -1;
 	}
 
+	tx_pos = 0;
+
 	fwd_sock = socket(PF_INET, SOCK_DGRAM, 0);
 	if (fwd_sock < 0) {
 		log_print(LOG_ERROR, "net_init_cli(): socket()");

network.h

@@ -8,5 +8,6 @@ int net_init_cli();
 int net_receive(int sock);
 
 int net_submit(char *hostname, char *plugin, char *filename, int ds_id, char *data);
+int net_submit_flush();
 
 #endif /* _NETWORK_H_ */

p_mysql.c

@@ -36,7 +36,7 @@
 struct server_entry {
 	struct list_head list;
 	void *mysql;
-	char name[0];
+	char *name;
 };
 
 static LIST_HEAD(server_list);
@@ -175,15 +175,14 @@ static int init(void)
 		if (mysql == NULL)
 			continue;
 
-		int len = strlen(part[0]);
-		struct server_entry *entry = malloc(sizeof(struct server_entry) + len +1);
+		struct server_entry *entry = malloc(sizeof(struct server_entry));
 		if (entry == NULL) {
 			log_print(LOG_ERROR, "p_mysql: out of memory");
 			close_connection(mysql);
 			continue;
 		}
 
-		strcpy(entry->name, part[0]);
+		entry->name = part[0];
 		entry->mysql = mysql;
 
 		log_print(LOG_DEBUG, "p_mysql: added server '%s'", entry->name);

plugins.c

@@ -121,6 +121,9 @@ void plugins_probe(void)
 			plugin->lastprobe = now;
 		}
 	}
+
+	if (plugin_flags & PLUGIN_NET)
+		net_submit_flush();
 }
 
 struct sammler_plugin * plugin_lookup(char *name)

sammler.conf

@@ -1,9 +1,9 @@
 [global]
 hostname localhost
 
-#listen 127.0.0.1:5000
-#forward 127.0.0.1:5000
-#forward_only true
+listen 127.0.0.1:5000
+forward 127.0.0.1:5000
+forward_only true
 
 logfile sammler.log