Better startup error checking & fix bug

v2rayN/v2rayN/Handler/V2rayHandler.cs

@@ -200,6 +200,7 @@ namespace v2rayN.Handler
                         WorkingDirectory = Utils.StartupPath(),
                         UseShellExecute = false,
                         RedirectStandardOutput = true,
+                        RedirectStandardError = true,
                         CreateNoWindow = true,
                         StandardOutputEncoding = Encoding.UTF8
                     }
@@ -217,6 +218,11 @@ namespace v2rayN.Handler
                 //processId = p.Id;
                 _process = p;
 
+                if (p.WaitForExit(1000))
+                {
+                    throw new Exception(p.StandardError.ReadToEnd());
+                }
+
                 Global.processJob.AddProcess(p.Handle);
             }
             catch (Exception ex)
@@ -248,6 +254,7 @@ namespace v2rayN.Handler
                         UseShellExecute = false,
                         RedirectStandardInput = true,
                         RedirectStandardOutput = true,
+                        RedirectStandardError = true,
                         CreateNoWindow = true,
                         StandardOutputEncoding = Encoding.UTF8
                     }
@@ -266,6 +273,11 @@ namespace v2rayN.Handler
                 p.StandardInput.Write(configStr);
                 p.StandardInput.Close();
 
+                if (p.WaitForExit(1000))
+                {
+                    throw new Exception(p.StandardError.ReadToEnd());
+                }
+
                 Global.processJob.AddProcess(p.Handle);
                 return p.Id;
             }
@@ -273,7 +285,7 @@ namespace v2rayN.Handler
             {
                 Utils.SaveLog(ex.Message, ex);
                 string msg = ex.Message;
-                ShowMsg(true, msg);
+                ShowMsg(false, msg);
                 return -1;
             }
         }