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);
}
//-----------------------------------------------------------------------------------------
private long Compress(Func <Stream, Stream> compressionStreamFunc)
{
using (var ms = new DevNullStream())
{
using (var cs = compressionStreamFunc(ms))
{
cs.Write(data, 0, data.Length);
}
return(ms.Length);
}
}
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 RangedRandomToDevNull()
{
using (Stream cs = new RangedRandomBytesStream(defCount, 0xAD, 0xEF), dns = new DevNullStream())
await dns.CopyToAsync(cs);
}
public async Task ConstantToDevNull()
{
using (Stream cs = new ConstantStream(defCount, new byte[] { 0xDE, 0xAD, 0xBE, 0xEF }), dns = new DevNullStream())
await dns.CopyToAsync(cs);
}
public async Task RangedRandomToDevNull()
{
using (Stream cs = new RangedRandomBytesStream(defCount, 0xAD, 0xEF), dns = new DevNullStream())
await dns.CopyToAsync(cs);
}
public async Task ConstantToDevNull()
{
using (Stream cs = new ConstantStream(defCount, new byte[] { 0xDE, 0xAD, 0xBE, 0xEF }), dns = new DevNullStream())
await dns.CopyToAsync(cs);
}
