From ef16fa500ba869a031d1bf94a35af0d81625e035 Mon Sep 17 00:00:00 2001
From: Shivesh Khaitan <shiveshkhaitan@gmail.com>
Date: Mon, 2 Sep 2019 00:23:38 +0530
Subject: [PATCH] Fix is_connected

---
 src/socket_can.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/socket_can.cpp b/src/socket_can.cpp
index d0b7261..25d5a7e 100644
--- a/src/socket_can.cpp
+++ b/src/socket_can.cpp
@@ -48,6 +48,21 @@ void SocketCAN::init()
     return;
   }
 
+  int error = 0;
+  socklen_t len = sizeof (error);
+  int retval = getsockopt (socket_, SOL_SOCKET, SO_ERROR, &error, &len);
+  if (retval != 0) {
+    /* there was a problem getting the error code */
+    printf("Error getting socket error code: %s\n", strerror(retval));
+    return;
+  }
+
+  if (error != 0) {
+    /* socket has a non zero error status */
+    printf("Socket error: %s\n", strerror(error));
+    return;
+  }
+
   struct timeval timeout{};
   timeout.tv_sec = (timeout_ / 1000);
   timeout.tv_usec = (timeout_ % 1000) * 1000;