From 7d38536b22be3b0e0e5e6964fd5a265422c91e72 Mon Sep 17 00:00:00 2001
From: solarin <menghini@gmail.com>
Date: Sun, 5 Apr 2020 16:03:30 +0400
Subject: [PATCH] add exception rethrowing

---
 TLSharp.Core/Network/TcpTransport.cs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/TLSharp.Core/Network/TcpTransport.cs b/TLSharp.Core/Network/TcpTransport.cs
index 3750a76..6bbbe33 100644
--- a/TLSharp.Core/Network/TcpTransport.cs
+++ b/TLSharp.Core/Network/TcpTransport.cs
@@ -22,7 +22,13 @@ namespace TLSharp.Core.Network
                 var endpoint = new IPEndPoint(ipAddress, port);
 
                 tcpClient = new TcpClient(ipAddress.AddressFamily);
-                tcpClient.Connect(endpoint);
+
+                try {
+                    tcpClient.Connect (endpoint);
+                } catch (Exception ex) {
+                    throw new Exception ($"Problem when trying to connect to {endpoint}; either there's no internet connection or the IP address version is not compatible (if the latter, consider using DataCenterIPVersion enum)",
+                                         ex);
+                }
             }
             else
                 tcpClient = handler(address, port);