From a002a77d1dbc887d31a910b7e30448e84f5a8761 Mon Sep 17 00:00:00 2001
From: sta <sta.blockhead@gmail.com>
Date: Tue, 22 Nov 2016 17:49:42 +0900
Subject: [PATCH] [Modify] Throw exceptions

---
 websocket-sharp/WebSocket.cs | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/websocket-sharp/WebSocket.cs b/websocket-sharp/WebSocket.cs
index 32e53a45..ae9837eb 100644
--- a/websocket-sharp/WebSocket.cs
+++ b/websocket-sharp/WebSocket.cs
@@ -2893,15 +2893,19 @@ namespace WebSocketSharp
     /// </param>
     public void SendAsync (Stream stream, int length, Action<bool> completed)
     {
-      var msg = _readyState.CheckIfAvailable (false, true, false, false) ??
-                CheckSendParameters (stream, length);
+      if (_readyState != WebSocketState.Open) {
+        var msg = "The current state of the connection is not Open.";
+        throw new InvalidOperationException (msg);
+      }
 
-      if (msg != null) {
-        _logger.Error (msg);
-        error ("An error has occurred in sending data.", null);
+      if (stream == null)
+        throw new ArgumentNullException ("stream");
 
-        return;
-      }
+      if (!stream.CanRead)
+        throw new ArgumentException ("Cannot be read.", "stream");
+
+      if (length < 1)
+        throw new ArgumentException ("Less than 1.", "length");
 
       stream.ReadBytesAsync (
         length,