System.Net.Sockets.BaseOverlappedAsyncResult.CheckAsyncCallOverlappedResult C# (CSharp) Метод

        internal unsafe SocketError CheckAsyncCallOverlappedResult(SocketError errorCode)
        {
            if (NetEventSource.IsEnabled) NetEventSource.Info(this, errorCode);

            if (errorCode == SocketError.Success || errorCode == SocketError.IOPending)
            {
                // Ignore cases in which a completion packet will be queued:
                // we'll deal with this IO in the callback.
                return SocketError.Success;
            }

            // In the remaining cases a completion packet will NOT be queued:
            // we have to call the callback explicitly signaling an error.
            ErrorCode = (int)errorCode;
            Result = -1;

            ReleaseUnmanagedStructures();  // Additional release for the completion that won't happen.
            return errorCode;
        }
    }