internal async Task <DownloadSpeed> GetDownloadSpeed(Server server = null, SpeedTestUnit unit = SpeedTestUnit.KiloBytesPerSecond)
{
try
{
if (server == null)
{
server = await GetServer();
}
if (string.IsNullOrEmpty(server?.Url?.Trim()))
{
throw new Exception("Failed to get download speed");
}
var downloadUrls = GenerateDownloadUrls(server, 3);
double totalSize = 0;
var startTime = DateTime.Now;
foreach (var url in downloadUrls)
{
try
{
var bytes = await GetByteArrayAsync(url);
totalSize += bytes.Length;
}
catch { }
}
var elapsedSeconds = (DateTime.Now - startTime).TotalSeconds;
var bytesPerSecond = totalSize / elapsedSeconds;
return(new DownloadSpeed
{
Server = server,
Speed = bytesPerSecond.FromBytesPerSecondTo(unit),
Unit = unit.ToShortIdentifier()
});
}
catch (Exception ex)
{
throw new Exception("Failed to get download speed", ex);
}
}
internal async Task <DownloadSpeed> GetDownloadSpeed(IEnumerable <string> downloadUrls, SpeedTestUnit unit, int timeout = 5000)
{
var bytes = 0D;
var startTime = DateTime.Now;
foreach (var url in downloadUrls)
{
bytes += await GetDownloadedBytes(url, timeout);
}
var elapsedSeconds = (DateTime.Now - startTime).TotalSeconds;
var bytesPerSecond = bytes / elapsedSeconds;
return(new DownloadSpeed
{
Speed = bytesPerSecond.FromBytesPerSecondTo(unit),
Unit = unit.ToShortIdentifier()
});
}
public string ToString(SpeedTestUnit unit)
{
return($"{Speed.FromBytesPerSecondTo(unit)}{unit.ToShortIdentifier()} Up ({Server.Host})");
}