WriteHeader()

static int System.Net.WebSockets.ManagedWebSocket.WriteHeader ( MessageOpcode opcode, byte[] sendBuffer, ReadOnlySpan< byte > payload, bool endOfMessage, bool useMask, bool compressed )

inlinestaticprivate

Definition at line 976 of file ManagedWebSocket.cs.

    {
        sendBuffer[0] = (byte)opcode;
        if (endOfMessage)
        {
            sendBuffer[0] |= 128;
        }
        if (compressed && opcode != 0)
        {
            sendBuffer[0] |= 64;
        }
        int num;
        if (payload.Length <= 125)
        {
            sendBuffer[1] = (byte)payload.Length;
            num = 2;
        }
        else if (payload.Length <= 65535)
        {
            sendBuffer[1] = 126;
            sendBuffer[2] = (byte)(payload.Length / 256);
            sendBuffer[3] = (byte)payload.Length;
            num = 4;
        }
        else
        {
            sendBuffer[1] = 127;
            int num2 = payload.Length;
            for (int num3 = 9; num3 >= 2; num3--)
            {
                sendBuffer[num3] = (byte)num2;
                num2 /= 256;
            }
            num = 10;
        }
        if (useMask)
        {
            sendBuffer[1] |= 128;
            WriteRandomMask(sendBuffer, num);
        }
        return num;
    }

References System.ReadOnlySpan< T >.Length, and System.Net.WebSockets.ManagedWebSocket.WriteRandomMask().

Referenced by System.Net.WebSockets.ManagedWebSocket.WriteFrameToSendBuffer().