#if !NET20 using System; namespace Apewer.WebSocket { internal class SubProtocolNegotiationFailureException : Exception { public SubProtocolNegotiationFailureException() : base() { } public SubProtocolNegotiationFailureException(string message) : base(message) {} public SubProtocolNegotiationFailureException(string message, Exception innerException) : base(message, innerException) {} } } #endif