public void PingHandler(INetworkStream stream)
{
var buffer = new byte[PingSize];
using (var timer = new Timer(_ =>
{
stream.Dispose();
}, null, TimeSpan.Zero, PingTimeout))
{
while (true)
{
if (stream?.ReadFull(buffer) != buffer.Length)
{
break;
}
if (stream?.Write(buffer, 0, buffer.Length) != buffer.Length)
{
break;
}
timer.Change(TimeSpan.Zero, PingTimeout);
}
}
}
private TimeSpan Ping(INetworkStream stream)
{
var buffer = new byte[PingSize];
using (var rng = RandomNumberGenerator.Create())
{
rng.GetNonZeroBytes(buffer);
}
var sw = new Stopwatch();
sw.Start();
if (stream.Write(buffer, 0, buffer.Length) != buffer.Length)
{
return(TimeSpan.Zero);
}
var rbuf = new byte[PingSize];
if (stream.ReadFull(rbuf) != rbuf.Length)
{
return(TimeSpan.Zero);
}
if (!rbuf.SequenceEqual(buffer))
{
return(TimeSpan.Zero);
}
sw.Stop();
return(sw.Elapsed);
}