[Modify] Throw exceptions
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		@@ -2689,14 +2689,12 @@ namespace WebSocketSharp
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    /// </param>
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					    /// </param>
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    public void Send (FileInfo file)
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					    public void Send (FileInfo file)
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    {
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					    {
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      var msg = _readyState.CheckIfAvailable (false, true, false, false) ??
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					      if (file == null)
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                CheckSendParameter (file);
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					        throw new ArgumentNullException ("file");
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      if (msg != null) {
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					      if (_readyState != WebSocketState.Open) {
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        _logger.Error (msg);
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					        var msg = "The current state of the connection is not Open.";
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        error ("An error has occurred in sending data.", null);
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					        throw new InvalidOperationException (msg);
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        return;
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      }
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					      }
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      send (Opcode.Binary, file.OpenRead ());
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					      send (Opcode.Binary, file.OpenRead ());
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