Pb with TcpClient class and NTP server

[Kirk]

Hello,

I'm trying to get the current date/time from a (S)NTP server. It works
with UdpClient class, but not with TcpClient class. I want to use
TcpClient because i can set timeout values for reading/writing operations.

The connect method generate a SocketException (10060 : timeout error) :

try
{
IPAddress address = IPAddress.Parse(TimeServer);
TcpClient client = new TcpClient();
client.Connect(address,123);
}
catch (SocketException e)
{
....
}

Have you an idea ?

Thanks in advance.

 

[Kirk]

Solved.

NTP servers only uses UDP protocol. A socket with ProtocolType.Udp
protocol works fined.

 

[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

If the server use UDP then there is nothng else you can do, you have to use
UDP.

Check the RFC for the protocol in question.

cheers,