public ChunkResponse DownloadChunkStatsOnly(SmoothStreamChunk chunk)
{
ChunkResponse cr = new ChunkResponse() { RequestedAt = DateTime.Now };
try
{
var response = GetWebPageContent(chunk.ChunkUrl, 1000);
}
catch (WebException webEx)
{
using (WebResponse response = webEx.Response)
{
ReturnStatusCode = (response as HttpWebResponse).StatusCode;
}
}
catch (Exception)
{
}
cr.ResponseCompletedAt = DateTime.Now;
cr.Headers = _responseHeaders;
cr.ReturnStatusCode = ReturnStatusCode;
return cr;
}
public ResponseRating RateChunkResponse(SmoothStreamChunk chunk, ChunkResponse response)
{
if (response.Elapsed.HasValue == false) { return ResponseRating.Unknown; }
if (response.ReturnStatusCodeNumeric > 400)
{
return ResponseRating.Failed;
}
int[] thresholdMeasurement = _videoThresholds;
if (chunk.IsAudio)
{
thresholdMeasurement = _audioThresholds;
}
for (int thresholdIndex = 0; thresholdIndex < thresholdMeasurement.Length; thresholdIndex++)
{
int responseThreshold = thresholdMeasurement[thresholdIndex];
if (response.Elapsed.Value.TotalMilliseconds < responseThreshold)
{
return (ResponseRating)thresholdIndex;
}
}
if (response.Elapsed.Value.TotalMilliseconds > thresholdMeasurement.Max())
{
return ResponseRating.Poor;
}
return ResponseRating.Unknown;
}
public async Task<ChunkResponse> DownloadChunkStatsOnlyAsync(string chunkUrl)
{
ChunkResponse cr = new ChunkResponse() { RequestedAt = DateTime.Now };
try
{
var response = await GetWebPageContentAsync(chunkUrl, 1000);
}
catch (WebException webEx)
{
using (WebResponse response = webEx.Response)
{
ReturnStatusCode = (response as HttpWebResponse).StatusCode;
}
}
catch (Exception)
{
}
cr.ResponseCompletedAt = DateTime.Now;
cr.Headers = _responseHeaders;
cr.ReturnStatusCode = ReturnStatusCode;
return cr;
}
static void OnChunkTested(SmoothStreamPerformanceTest test, SmoothStreamChunk chunk, ChunkResponse chunkResponse)
{
var rating = new ChunkResponseAnalyzer().RateChunkResponse(chunk, chunkResponse);
string ratingText = rating.ToString();
if (!_ratingCounters.ContainsKey(ratingText))
{
_ratingCounters[ratingText] = 0;
}
_ratingCounters[ratingText] += 1;
}