public async Task <float> measureDownloadSpeed(Uri uri)
{
Contract.Requires(uri != null);
var req = WebRequest.Create(uri);
req.Credentials = CredentialCache.DefaultCredentials;
req.Proxy = hch.Proxy;
req.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);
emitProgressEvent(0);
float speed;
using (var devNull = new DevNullStream()) {
using (var resp = await req.GetResponseAsync() as HttpWebResponse) {
var len = resp.ContentLength;
EventedStream.dataLoadListener cb = (o, bytes) => emitProgressEvent(bytes * 100 / len);
using (var str = resp.GetResponseStream()) {
devNull.onLoading += cb;
sw.Restart();
await str.CopyToAsync(devNull);
sw.Stop();
devNull.onLoading -= cb;
}
speed = (float)(len / (sw.Elapsed.TotalSeconds));
}
}
return(speed);
}
public async Task <float> measureUploadSpeed(Server server, int size = 1024 *482)
{
Contract.Requires(server != null);
Contract.Requires(size >= 0);
var prefix = new[] {
(byte)'&',
(byte)'c',
(byte)'o',
(byte)'n',
(byte)'t',
(byte)'e',
(byte)'n',
(byte)'t',
(byte)'0',
(byte)'=',
};
stage = Stage.UPLOAD;
var req = HttpWebRequest.Create(new Uri(server.uri, "upload.php")) as HttpWebRequest;
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
req.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);
req.ContentLength = countOfPieces * (defaultSize + prefix.Length);
req.KeepAlive = true;
req.Credentials = CredentialCache.DefaultCredentials;
req.Proxy = hch.Proxy;
emitProgressEvent(0);
using (var str = req.GetRequestStream()) {
using (var ums = new RangedRandomBytesStream(defaultSize, (byte)'A', (byte)'z'))
{
int j = 0;
EventedStream.dataLoadListener evtListener = (o, bytes) => emitProgressEvent(100 * (j + bytes / defaultSize) / countOfPieces);
ums.onLoading += evtListener;
sw.Restart();
for (; j < countOfPieces; j++)
{
prefix[8] = (byte)('0' + j);
await str.WriteAsync(prefix, 0, prefix.Length);
await str.FlushAsync();
await ums.CopyToAsync(str);
ums.Position = 0;
await str.FlushAsync();
}
sw.Stop();
ums.onLoading -= evtListener;
}
}
await req.GetResponseAsync().ContinueWith(t => t.Result.GetResponseStream().Close());
float speed = (float)(req.ContentLength / (sw.Elapsed.TotalSeconds));
emitProgressEvent(100);
emitMeasuredEvent(speed);
return(speed);
}
