/// <summary>
/// Implements on begin callback of http module.
/// </summary>
public void OnBeginRequest(HttpContext context)
{
if (this.telemetryClient == null)
{
throw new InvalidOperationException("Initialize has not been called on this module yet.");
}
if (context == null)
{
WebEventSource.Log.NoHttpContextWarning();
return;
}
var requestTelemetry = context.ReadOrCreateRequestTelemetryPrivate();
// NB! Whatever is saved in RequestTelemetry on Begin is not guaranteed to be sent because Begin may not be called; Keep it in context
// In WCF there will be 2 Begins and 1 End. We need time from the first one
if (requestTelemetry.Timestamp == DateTimeOffset.MinValue)
{
requestTelemetry.Start();
}
}
/// <summary>
/// Implements on end callback of http module.
/// </summary>
public void OnEndRequest(HttpContext context)
{
if (this.telemetryClient == null)
{
throw new InvalidOperationException("Initialize has not been called on this module yet.");
}
if (!this.NeedProcessRequest(context))
{
return;
}
var requestTelemetry = context.ReadOrCreateRequestTelemetryPrivate();
requestTelemetry.Stop();
// Success will be set in Sanitize on the base of ResponseCode
if (string.IsNullOrEmpty(requestTelemetry.ResponseCode))
{
requestTelemetry.ResponseCode = context.Response.StatusCode.ToString(CultureInfo.InvariantCulture);
}
if (requestTelemetry.Url == null)
{
requestTelemetry.Url = context.Request.UnvalidatedGetUrl();
}
if (context.Request.Headers != null)
{
// If the source header is present on the incoming request, use that to populate the source field.
string sourceIkey = context.Request.Headers[RequestResponseHeaders.SourceInstrumentationKeyHeader];
if (!string.IsNullOrEmpty(sourceIkey))
{
requestTelemetry.Source = sourceIkey;
}
}
this.telemetryClient.TrackRequest(requestTelemetry);
}
