[Modify] Polish it
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@ -823,8 +823,8 @@ namespace WebSocketSharp.Server
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throw new InvalidOperationException (msg);
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throw new InvalidOperationException (msg);
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}
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}
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if (message == null)
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if (message.IsNullOrEmpty ())
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throw new ArgumentNullException ("message");
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return broadping (WebSocketFrame.EmptyPingBytes, _waitTime);
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byte[] bytes;
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byte[] bytes;
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if (!message.TryGetUTF8EncodedBytes (out bytes)) {
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if (!message.TryGetUTF8EncodedBytes (out bytes)) {
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