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 static string ToShortIdentifier(this SpeedTestUnit unit)
{
if (unit == SpeedTestUnit.MegaBytesPerSecond)
{
return("MB/s");
}
if (unit == SpeedTestUnit.MegaBitsPerSecond)
{
return("Mb/s");
}
if (unit == SpeedTestUnit.KiloBitsPerSecond)
{
return("Kb/s");
}
return("KB/s");
}
internal async Task <DownloadSpeed> GetDownloadSpeed(SpeedTestUnit unit = SpeedTestUnit.KiloBytesPerSecond)
{
if (string.IsNullOrEmpty(Token))
{
var jsonFilePath = await GetJsonFilePath();
Token = await GetToken(jsonFilePath);
}
var urls = await GetUrls(Token);
var speed = await GetDownloadSpeed(urls?.Select(x => x.Url.AbsoluteUri), unit);
return(new DownloadSpeed
{
Speed = speed.Speed,
Unit = speed.Unit,
Source = SpeedTestSource.Fast.ToSourceString()
});
}
internal static double FromBytesPerSecondTo(this double speed, SpeedTestUnit unit)
{
switch (unit)
{
case SpeedTestUnit.BytesPerSecond:
return(speed);
case SpeedTestUnit.KiloBytesPerSecond:
return(speed / 1024);
case SpeedTestUnit.KiloBitsPerSecond:
return(speed * 8 / 1024);
case SpeedTestUnit.MegaBytesPerSecond:
return(speed / (1024 * 1024));
case SpeedTestUnit.MegaBitsPerSecond:
return(speed * 8 / (1024 * 1024));
default:
return(speed);
}
}
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);
if (downloadUrls?.Any() != true)
{
throw new Exception("Couldn't fetch downloadable urls");
}
var speed = await GetDownloadSpeed(downloadUrls, unit);
return(new DownloadSpeed
{
Server = server,
Speed = speed.Speed,
Unit = speed.Unit,
Source = SpeedTestSource.Speedtest.ToSourceString()
});
}
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})");
}
/// <summary> /// Calculates download speed using the provided server /// </summary> /// <param name="server">The server object used for downloading files</param> /// <param name="unit">Unit in which Speed Test response should be returned</param> /// <returns>Download speed in KB/s</returns> public static async Task <DownloadSpeed> GetDownloadSpeed(Server server = null, SpeedTestUnit unit = SpeedTestUnit.KiloBytesPerSecond) => await Client.GetDownloadSpeed(server, unit);
/// <summary> /// Calculates download speed using the provided server /// </summary> /// <param name="unit">Specifies in which unit download speed should be returned</param> /// <returns>An instance of type DownloadSpeed</returns> public static async Task <DownloadSpeed> GetDownloadSpeed(SpeedTestUnit unit = SpeedTestUnit.KiloBytesPerSecond) => await Client?.GetDownloadSpeed(unit);