From 3c27971cc7c382046f67dc10625d0a8c8a8255a2 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Wed, 30 Aug 2017 22:22:05 +0200
Subject: [PATCH] socket: treat EPERM as a warning (see #120)

---
 lib/nodes/socket.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/nodes/socket.c b/lib/nodes/socket.c
index 3cd02e1c2..5aa5f38bc 100644
--- a/lib/nodes/socket.c
+++ b/lib/nodes/socket.c
@@ -24,6 +24,7 @@
 #include <sys/socket.h>
 #include <netinet/ip.h>
 #include <arpa/inet.h>
+#include <errno.h>
 
 #if defined(__linux__)
   #include <netinet/ether.h>
@@ -370,8 +371,12 @@ int socket_write(struct node *n, struct sample *smps[], unsigned cnt)
 
 	/* Send message */
 	bytes = sendto(s->sd, data, wbytes, 0, (struct sockaddr *) &s->remote, sizeof(s->remote));
-	if (bytes < 0)
-		serror("Failed send to node %s", node_name(n));
+	if (bytes < 0) {
+		if (errno == EPERM)
+			warn("Failed send to node %s: %s", node_name(n), strerror(errno));
+		else
+			serror("Failed send to node %s", node_name(n));
+	}
 
 	if (bytes != wbytes)
 		warn("Partial send to node %s", node_name(n));