public HttpCoreDiagnosticSourceListener(
TelemetryConfiguration configuration,
bool setComponentCorrelationHttpHeaders,
IEnumerable <string> correlationDomainExclusionList,
bool injectLegacyHeaders,
bool injectRequestIdInW3CMode,
HttpInstrumentationVersion instrumentationVersion)
{
this.client = new TelemetryClient(configuration);
this.client.Context.GetInternalContext().SdkVersion = SdkVersionUtils.GetSdkVersion("rdd" + RddSource.DiagnosticSourceCore + ":");
this.configuration = configuration;
this.applicationInsightsUrlFilter = new ApplicationInsightsUrlFilter(configuration);
this.setComponentCorrelationHttpHeaders = setComponentCorrelationHttpHeaders;
this.correlationDomainExclusionList = correlationDomainExclusionList ?? Enumerable.Empty <string>();
this.injectLegacyHeaders = injectLegacyHeaders;
this.httpInstrumentationVersion = instrumentationVersion != HttpInstrumentationVersion.Unknown ?
instrumentationVersion :
this.GetInstrumentationVersion();
this.injectRequestIdInW3CMode = injectRequestIdInW3CMode;
this.subscriber = new HttpCoreDiagnosticSourceSubscriber(
this,
this.applicationInsightsUrlFilter,
this.httpInstrumentationVersion);
}
private HttpCoreDiagnosticSourceListener CreateHttpListener(HttpInstrumentationVersion instrumentationVersion)
{
return(new HttpCoreDiagnosticSourceListener(
this.configuration,
setComponentCorrelationHttpHeaders: true,
correlationDomainExclusionList: new string[0],
injectLegacyHeaders: false,
injectRequestIdInW3CMode: true,
instrumentationVersion));
}
internal HttpCoreDiagnosticSourceSubscriber(
HttpCoreDiagnosticSourceListener listener,
ApplicationInsightsUrlFilter applicationInsightsUrlFilter,
HttpInstrumentationVersion httpInstrumentationVersion)
{
this.httpDiagnosticListener = listener;
this.applicationInsightsUrlFilter = applicationInsightsUrlFilter;
this.httpInstrumentationVersion = httpInstrumentationVersion;
try
{
this.listenerSubscription = DiagnosticListener.AllListeners.Subscribe(this);
}
catch (Exception ex)
{
DependencyCollectorEventSource.Log.HttpCoreDiagnosticSubscriberFailedToSubscribe(ex.ToInvariantString());
}
SubscriptionManager.Attach(this.httpDiagnosticListener);
}
private HttpInstrumentationVersion GetInstrumentationVersion()
{
HttpInstrumentationVersion version = HttpInstrumentationVersion.Unknown;
var httpClientAssembly = typeof(HttpClient).GetTypeInfo().Assembly;
var httpClientVersion = httpClientAssembly.GetName().Version;
string httpClientInformationalVersion =
httpClientAssembly.GetCustomAttribute <AssemblyInformationalVersionAttribute>()?.InformationalVersion ??
string.Empty;
if (httpClientInformationalVersion.StartsWith("3.", StringComparison.Ordinal))
{
version = HttpInstrumentationVersion.V3;
}
else if (httpClientVersion.Major == 4 && httpClientVersion.Minor == 2)
{
// .NET Core 3.0 has the same version of http client lib as 2.*
// but AssemblyInformationalVersionAttribute is different.
version = HttpInstrumentationVersion.V2;
}
else if (httpClientVersion.Major == 4 && httpClientVersion.Minor < 2)
{
version = HttpInstrumentationVersion.V1;
}
else
{
// fallback to V3 assuming unknown SDKs are from future versions
version = HttpInstrumentationVersion.V3;
}
DependencyCollectorEventSource.Log.HttpCoreDiagnosticListenerInstrumentationVersion(
(int)version,
httpClientVersion.Major,
httpClientVersion.Minor,
httpClientInformationalVersion);
return(version);
}
