How can i check if MySQL server is alive from C# MOBILE before i connect to my database

Question

I need a quick way to check if the server that runs MySQL is started from C# mobile. I tried with Socket ... very slowly !!! ... and Ping class does not exist in C # mobile

IPHostEntry myHostEntry = Dns.GetHostEntry("192.168.2.222");
IPEndPoint host = new IPEndPoint(myHostEntry.AddressList[0], 3306);

Socket s = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
s.Connect(host);
if (s.Connected) { 
      MessageBox.Show("Ping Ok!!!"); 
} else {
       MessageBox.Show("Ping not Ok !!!");
}

Does anyone have any suggestions ???

Answer 1

If you can host some kind of script on the server, where MySQL is located then write a simple script that connects to local MySQL and prints 1 on success and 0 on failure. Query the script with HTTP from C# mobile. This would be most reliable solution imho.

Answer 2

Adjust your timeouts and remove the dns-resolve.

IPEndPoint host = new IPEndPoint(IPAddress.Parse("192.168.2.222"), 3306);

Socket s = new Socket(AddressFamily.InterNetwork,
s.ReceiveTimeout = 100;
s.SendTimeout = 100;
SocketType.Stream, ProtocolType.Tcp);
s.Connect(host);
if (s.Connected) { 
      MessageBox.Show("Ping Ok!!!"); 
} else {
       MessageBox.Show("Ping not Ok !!!");
}

But this can unreliable in a high latency environment (mobile-networks)

Answer 3

The server might be alive and healthy, but your "health check" may timeout leading you to think it's dead; on the other hand, you may find out your server is perfectly healthy and you proceed with your queries, which in turn timeout (it's not that different a situation).

I'd suggest you assume the server is alive AND assume every query can and will timeout, handling appropriately the various conditions.