/// <summary>
/// Enables processing of HTTP Web requests by a custom HttpHandler that implements the <see cref="T:System.Web.IHttpHandler"
/// />interface.
/// </summary>
/// <remarks> ebrown, 2/10/2011. </remarks>
/// <exception cref="ObjectDisposedException"> Thrown when a supplied object has been disposed. </exception>
/// <exception cref="ArgumentNullException"> Thrown when one or more required arguments are null. </exception>
/// <param name="context"> An <see cref="T:System.Web.HttpContext" /> object that provides references to the intrinsic server objects
/// (for example, Request, Response, Session, and Server) used to service HTTP requests. </param>
public override void ProcessRequest(HttpContextBase context)
{
if (_disposed)
{
throw new ObjectDisposedException("this");
}
stopwatch.Start();
//TODO: 5-1-09 -- Response.Redirect doesn't make any sense... maybe we should just give them an 'unauthorized' empty file thing
if (null == context)
{
throw new ArgumentNullException("context");
}
this._context = context;
//assign to local fields for micro-perf since these are virtuals
this._request = context.Request;
this._response = context.Response;
try
{
var method = this._request.HttpMethod;
//we only accept GET or HEAD - don't log these
if ((HttpMethodNames.Get.ToEnumValueString() != method) &&
(HttpMethodNames.Header.ToEnumValueString() != method))
{
this._response.StatusCode = (int)HttpStatusCode.NotImplemented;
this._response.Redirect(_configuration.UnauthorizedErrorRedirectUrl, false);
return;
}
_statusLogger.Log(context, StreamWriteStatus.ApplicationRestarted);
//now pass the HttpRequestBase to our class responsible for examining specific state and loading the Stream
using (StreamLoaderResult fileDetails = _streamLoader.ParseRequest(this._request))
{
if (fileDetails.Status != StreamLoadStatus.Success)
{
RedirectOnFailedStatus(fileDetails);
return;
}
IEnumerable <RangeRequest> rangeRequests;
if (!HeadersValidate(fileDetails, out rangeRequests))
{
return;
}
HttpResponseType responseStreamType = method == HttpMethodNames.Header.ToEnumValueString() ?
HttpResponseType.HeadOnly : HttpResponseType.Complete;
//we've passed our credential checking and we're ready to send out our response
StreamWriteStatus streamWriteStatus = new ResponseStreamWriter(this._response, this._configuration.FileTransferBufferSizeInKBytes)
.StreamFile(responseStreamType, fileDetails, rangeRequests, this._request.RetrieveHeader(HttpHeaderFields.IfRange), true);
HandleStreamWriteStatus(streamWriteStatus);
}
}
catch (HttpException hex)
{
//remote host closed the connection
if (HttpExceptionErrorCodes.ConnectionAborted == hex.ErrorCode)
{
//log.Warn(String.Format("Remote Host Closed Transfer - Identity [{0}] - FileId [{1}] - User Id [{2}] / Name [{3}] / Email [{4}]{5}{5}{6}", WindowsIdentity.GetCurrent().Name, FileId, context.OnyxUser().Identity.OCPUser.Individual.OnyxId, context.OnyxUser().Identity.OCPUser.Individual.UserName, context.OnyxUser().Identity.OCPUser.Individual.UserEmailAddress, Environment.NewLine, this._request.ToLogString()), ex);
}
}
//eat it -- nothing we can do
catch (ThreadAbortException)
{ }
//log.Error(String.Format("Unexpected Download Exception Occurred - Identity [{0}] - FileId [{1}] - User Id [{2}] / Name [{3}] / Email [{4}]{5}{5}{6}", WindowsIdentity.GetCurrent().Name, FileId, context.OnyxUser().Identity.OCPUser.Individual.OnyxId, context.OnyxUser().Identity.OCPUser.Individual.UserName, context.OnyxUser().Identity.OCPUser.Individual.UserEmailAddress, Environment.NewLine, this._request.ToLogString()), ex);
//SafeInternalServerError(context);
}
/// <summary>
/// Enables processing of HTTP Web requests by a custom HttpHandler that implements the <see cref="T:System.Web.IHttpHandler"
/// />interface.
/// </summary>
/// <remarks> ebrown, 2/10/2011. </remarks>
/// <exception cref="ObjectDisposedException"> Thrown when a supplied object has been disposed. </exception>
/// <exception cref="ArgumentNullException"> Thrown when one or more required arguments are null. </exception>
/// <param name="context"> An <see cref="T:System.Web.HttpContext" /> object that provides references to the intrinsic server objects
/// (for example, Request, Response, Session, and Server) used to service HTTP requests. </param>
public override void ProcessRequest(HttpContextBase context)
{
if (_disposed) { throw new ObjectDisposedException("this"); }
stopwatch.Start();
//TODO: 5-1-09 -- Response.Redirect doesn't make any sense... maybe we should just give them an 'unauthorized' empty file thing
if (null == context) { throw new ArgumentNullException("context"); }
this._context = context;
//assign to local fields for micro-perf since these are virtuals
this._request = context.Request;
this._response = context.Response;
try
{
var method = this._request.HttpMethod;
//we only accept GET or HEAD - don't log these
if ((HttpMethodNames.Get.ToEnumValueString() != method)
&& (HttpMethodNames.Header.ToEnumValueString() != method))
{
this._response.StatusCode = (int)HttpStatusCode.NotImplemented;
this._response.Redirect(_configuration.UnauthorizedErrorRedirectUrl, false);
return;
}
_statusLogger.Log(context, StreamWriteStatus.ApplicationRestarted);
//now pass the HttpRequestBase to our class responsible for examining specific state and loading the Stream
using (StreamLoaderResult fileDetails = _streamLoader.ParseRequest(this._request))
{
if (fileDetails.Status != StreamLoadStatus.Success)
{
RedirectOnFailedStatus(fileDetails);
return;
}
IEnumerable<RangeRequest> rangeRequests;
if (!HeadersValidate(fileDetails, out rangeRequests)) { return; }
HttpResponseType responseStreamType = method == HttpMethodNames.Header.ToEnumValueString() ?
HttpResponseType.HeadOnly : HttpResponseType.Complete;
//we've passed our credential checking and we're ready to send out our response
StreamWriteStatus streamWriteStatus = new ResponseStreamWriter(this._response, this._configuration.FileTransferBufferSizeInKBytes)
.StreamFile(responseStreamType, fileDetails, rangeRequests, this._request.RetrieveHeader(HttpHeaderFields.IfRange), true);
HandleStreamWriteStatus(streamWriteStatus);
}
}
catch (HttpException hex)
{
//remote host closed the connection
if (HttpExceptionErrorCodes.ConnectionAborted == hex.ErrorCode)
{
//log.Warn(String.Format("Remote Host Closed Transfer - Identity [{0}] - FileId [{1}] - User Id [{2}] / Name [{3}] / Email [{4}]{5}{5}{6}", WindowsIdentity.GetCurrent().Name, FileId, context.OnyxUser().Identity.OCPUser.Individual.OnyxId, context.OnyxUser().Identity.OCPUser.Individual.UserName, context.OnyxUser().Identity.OCPUser.Individual.UserEmailAddress, Environment.NewLine, this._request.ToLogString()), ex);
}
}
//eat it -- nothing we can do
catch (ThreadAbortException)
{ }
//log.Error(String.Format("Unexpected Download Exception Occurred - Identity [{0}] - FileId [{1}] - User Id [{2}] / Name [{3}] / Email [{4}]{5}{5}{6}", WindowsIdentity.GetCurrent().Name, FileId, context.OnyxUser().Identity.OCPUser.Individual.OnyxId, context.OnyxUser().Identity.OCPUser.Individual.UserName, context.OnyxUser().Identity.OCPUser.Individual.UserEmailAddress, Environment.NewLine, this._request.ToLogString()), ex);
//SafeInternalServerError(context);
}
