private IUnityTask OnPing(Ping ping, IPEndPoint senderAddress)
{
if (_isConnected || _pendingConnection != null)
{
return(EmptyTask);
}
_pendingConnection = senderAddress;
var connectionMessage = new ConnectionRequest(_synchronizationData.myName);
var sendMessage = new Common.SendMessageTask(_connection, connectionMessage, senderAddress);
var debug = new DebugTask($"Started waiting for connection", _logger);
return(new BatchTask(debug, sendMessage));
}
/// <summary>
/// method to check the ping status of a provided host
/// </summary>
/// <param name="addr">the host we need to ping</param>
/// <returns></returns>
public static string PingHost(string host)
{
//string to hold our return messge
string returnMessage = string.Empty;
//IPAddress instance for holding the returned host
IPAddress address = GetIpFromHost(ref host);
//set the ping options, TTL 128
PingOptions pingOptions = new PingOptions(128, true);
//create a new ping instance
Ping ping = new Ping();
//32 byte buffer (create empty)
byte[] buffer = new byte[32];
//first make sure we actually have an internet connection
if (HasConnection())
{
//here we will ping the host 4 times (standard)
for (int i = 0; i < 4; i++)
{
try
{
//send the ping 4 times to the host and record the returned data.
//The Send() method expects 4 items:
//1) The IPAddress we are pinging
//2) The timeout value
//3) A buffer (our byte array)
//4) PingOptions
PingReply pingReply = ping.Send(address, 1000, buffer, pingOptions);
//make sure we dont have a null reply
if (!(pingReply == null))
{
switch (pingReply.Status)
{
case IPStatus.Success:
returnMessage = string.Format("Reply from {0}: bytes={1} time={2}ms TTL={3}", pingReply.Address, pingReply.Buffer.Length, pingReply.RoundtripTime, pingReply.Options.Ttl);
break;
case IPStatus.TimedOut:
returnMessage = "Connection has timed out...";
break;
default:
returnMessage = string.Format("Ping failed: {0}", pingReply.Status.ToString());
break;
}
}
else
{
returnMessage = "Connection failed for an unknown reason...";
}
}
catch (PingException ex)
{
returnMessage = string.Format("Connection Error: {0}", ex.Message);
}
catch (SocketException ex)
{
returnMessage = string.Format("Connection Error: {0}", ex.Message);
}
}
}
else
{
returnMessage = "No Internet connection found...";
}
//return the message
return(returnMessage);
}
