From c2684ca1f5f8557fb92d5138d2e90462eb3539d3 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 30 Mar 2017 12:18:16 +0100
Subject: [PATCH] Improved the error warning message

---
 src/osgPlugins/osc/ip/posix/UdpSocket.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/osgPlugins/osc/ip/posix/UdpSocket.cpp b/src/osgPlugins/osc/ip/posix/UdpSocket.cpp
index 080ef5a8e..a9bd2babf 100644
--- a/src/osgPlugins/osc/ip/posix/UdpSocket.cpp
+++ b/src/osgPlugins/osc/ip/posix/UdpSocket.cpp
@@ -179,9 +179,13 @@ public:
     {
         assert( isConnected_ );
 
-        if (send( socket_, data, size, 0 ) < 0)
+        ssize_t result = send( socket_, data, size, 0 );
+
+        if (result < 0)
         {
-            throw std::runtime_error("error when calling send(..)\n");
+            std::string errorString("error when calling send : ");
+            errorString += strerror(errno);
+            throw std::runtime_error(errorString);
         }
     }