private void AsyncStreamCallback(IAsyncResult asyncResult)
{
var state = asyncResult.AsyncState as Pair<WebRequest, Pair<TimeSpan, int>>;
if (state == null)
{
// Unrecognized state signature
throw new ArgumentNullException("asyncResult",
"The asynchronous post failed to return its state");
}
var request = state.First;
var duration = state.Second.First;
var resultCount = state.Second.Second;
WebResponse response = null;
Stream stream = null;
try
{
using (response = request.EndGetResponse(asyncResult))
{
#if SILVERLIGHT
if (DecompressionMethods == Silverlight.Compat.DecompressionMethods.GZip ||
DecompressionMethods == Silverlight.Compat.DecompressionMethods.Deflate ||
DecompressionMethods == (Silverlight.Compat.DecompressionMethods.GZip | Silverlight.Compat.DecompressionMethods.Deflate)
)
{
response = new GzipHttpWebResponse((HttpWebResponse)response);
}
#endif
StreamImpl(out stream, request, response);
}
}
catch (WebException ex)
{
HandleWebException(ex);
}
finally
{
if (stream != null)
{
stream.Close();
stream.Dispose();
}
WebResponse = response;
}
}
protected virtual void PostAsyncResponseCallback(IAsyncResult asyncResult)
{
#if WindowsPhone
Interlocked.Increment(ref completed);
#endif
WebRequest request;
Triplet<WebRequest, Triplet<ICache, object, string>, object> state;
try
{
state = asyncResult.AsyncState as Triplet<WebRequest, Triplet<ICache, object, string>, object>;
if (state == null)
{
throw new ArgumentNullException("asyncResult", "The asynchronous post failed to return its state");
}
request = state.First;
if (request == null)
{
throw new ArgumentNullException("asyncResult", "The asynchronous post failed to return a request");
}
}
catch(Exception ex)
{
var args = new WebQueryResponseEventArgs(new MemoryStream(), ex);
OnQueryResponse(args);
return;
}
try
{
// Avoid disposing until no longer needed to build results
var response = request.EndGetResponse(asyncResult);
#if SILVERLIGHT
if (DecompressionMethods == Silverlight.Compat.DecompressionMethods.GZip ||
DecompressionMethods == Silverlight.Compat.DecompressionMethods.Deflate ||
DecompressionMethods == (Silverlight.Compat.DecompressionMethods.GZip | Silverlight.Compat.DecompressionMethods.Deflate)
)
{
response = new GzipHttpWebResponse((HttpWebResponse)response);
}
#endif
WebResponse = response;
ContentStream = response.GetResponseStream();
if (state.Second != null)
{
var cache = state.Second.First;
var expiry = state.Second.Second;
var url = request.RequestUri.ToString();
var prefix = state.Second.Third;
var key = CreateCacheKey(prefix, url);
if (expiry is DateTime)
{
// absolute
cache.Insert(key, ContentStream, (DateTime)expiry);
}
if (expiry is TimeSpan)
{
// sliding
cache.Insert(key, ContentStream, (TimeSpan)expiry);
}
}
var args = new WebQueryResponseEventArgs(ContentStream);
OnQueryResponse(args);
}
catch (WebException ex)
{
HandleWebException(ex);
}
}
protected virtual void GetAsyncResponseCallback(IAsyncResult asyncResult)
{
#if WindowsPhone
Interlocked.Increment(ref completed);
#endif
Console.Out.WriteLine("----- WebQuery.Async.cs GetAsyncResponseCallback");
object store;
var request = GetAsyncCacheStore(asyncResult, out store);
try
{
var response = request.EndGetResponse(asyncResult);
using (response)
{
#if SILVERLIGHT
if (DecompressionMethods == Silverlight.Compat.DecompressionMethods.GZip ||
DecompressionMethods == Silverlight.Compat.DecompressionMethods.Deflate ||
DecompressionMethods == (Silverlight.Compat.DecompressionMethods.GZip | Silverlight.Compat.DecompressionMethods.Deflate)
)
{
response = new GzipHttpWebResponse((HttpWebResponse)response);
}
#endif
WebResponse = response;
ContentStream = response.GetResponseStream();
if (store != null)
{
// No expiration specified
if (store is Pair<ICache, string>)
{
var cache = store as Pair<ICache, string>;
cache.First.Insert(cache.Second, ContentStream);
}
// Absolute expiration specified
if (store is Pair<ICache, Pair<string, DateTime>>)
{
var cache = store as Pair<ICache, Pair<string, DateTime>>;
cache.First.Insert(cache.Second.First, ContentStream, cache.Second.Second);
}
// Sliding expiration specified
if (store is Pair<ICache, Pair<string, TimeSpan>>)
{
var cache = store as Pair<ICache, Pair<string, TimeSpan>>;
cache.First.Insert(cache.Second.First, ContentStream, cache.Second.Second);
}
}
// Only send query when caching is complete
var args = new WebQueryResponseEventArgs(ContentStream);
OnQueryResponse(args);
}
}
catch (WebException ex)
{
HandleWebException(ex);
}
}
