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UdpClient - limited buffering?

I am having problems with UdpClient in C #. I transmit audio over the Internet between two clients.

On my microphone with a sampling frequency of 16 kHz, I send UDP packets with sound from 6400 bytes per packet. They never pass, with the exception of the last package, which is usually around 1200-3400, since I am closing the record. When I lower the sampling rate to 8 kHz, I send packets with a payload of 3200 bytes. For some reason they always pass.

So, basically something above 3200 becomes unsuccessful (the exact number has not been verified, but ...), why is this so? I thought maybe the internal UdpClient buffer is too small or something else? Since I transmit audio packets are often sent.

RECEIVE:

private void audioReceive(IAsyncResult asyn)
    {
        try
        {
            byte[] temp = audioSock.EndReceive(asyn, ref this.serverEP);
            this.waveProvider.AddSamples(temp, 0, temp.Length);

            this.textbox_display.Text = this.textbox_display.Text + " got bytes: " + temp.Length;
            audioSock.BeginReceive(new AsyncCallback(audioReceive), null);

        }
        catch (Exception ez)
        {
            MessageBox.Show("audioReceive: " + this.textbox_nick.Text + "        " +ez.ToString());
        }

    }

. ( asyn null btw, stateobject, )

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?

+5
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+2

2014 :

UdpClient class.NET Reference source.

private const int MaxUDPSize = 0x10000;  
...
private byte[] m_Buffer = new byte[MaxUDPSize];
0

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