TcpClient.SendBufferSize Property default value

Question

According to https://msdn.microsoft.com/en-us/library/system.net.sockets.tcpclient.sendbuffersize(v=vs.110).aspx  should the default value for TcpClient.SendBufferSize property be = 8192
bytes.
But when I run my code and print out the default value it gives 2626560.
How can this be?? What is the default value and when is it set?
TcpListener listener;
TcpClient tcpClient;
Int32 port = 1234;
IPAddress localAddr = IPAddress.Parse("127.0.0.1");
listener = new TcpListener(localAddr, port);
listener.Start();
TcpClient client = listener.AcceptTcpClient ();
tcpClient = (TcpClient)client;
Console.WriteLine("client.SendBufferSize:"+client.SendBufferSize);

Answer 1

According to https://msdn.microsoft.com/en-us/library/system.net.sockets.tcpclient.sendbuffersize(v=vs.110).aspx  should the default value for TcpClient.SendBufferSize property be = 8192
bytes.
But when I run my code and print out the default value it gives 2626560.
How can this be?? What is the default value and when is it set?
TcpListener listener;
TcpClient tcpClient;
Int32 port = 1234;
IPAddress localAddr = IPAddress.Parse("127.0.0.1");
listener = new TcpListener(localAddr, port);
listener.Start();
TcpClient client = listener.AcceptTcpClient ();
tcpClient = (TcpClient)client;
Console.WriteLine("client.SendBufferSize:"+client.SendBufferSize);
I'm mystified as to how this prints anything at all.  Your code should block (read: hang) at
TcpClient client = listener.AcceptTcpClient ();
since there's no incoming connection to accept.