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Description When an HTTP response contains only headers and not content (content-size = 0) then AI SDK (2.5-beta1) does not collect such calls as dependencies.
Repro
The following snippet for failure case should track 1) request (failed); 2) dependency (failed); 3) exception:
public async Task<string> GetStringFromBackend(
[FromUri] int numRetries,
[FromUri] int dataStoreDelayInMS,
[FromUri] double dataStoreFailureRatio)
{
while (true)
{
try
{
string result = $"Hello from Backend: {DateTime.Now};";
using (var client = new HttpClient())
{
var response =
await
client.GetStringAsync(
$"http://localhost.fiddler:8085/api/datastore/GetStringFromDataStore?delayInMS={dataStoreDelayInMS}&failureRatio={dataStoreFailureRatio}")
.ConfigureAwait(false);
result += response;
}
return result;
}
catch (Exception ex)
{
this.telemetry.TrackException(ex);
if (numRetries > 0)
{
--numRetries;
continue;
}
throw new HttpResponseException(HttpStatusCode.InternalServerError);
}
}
}
But with below response it tracks only request and exception but not dependency:
HTTP/1.1 500 Internal Server Error
Cache-Control: no-cache
Pragma: no-cache
Expires: -1
Server: Microsoft-IIS/8.5
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Sat, 11 Nov 2017 00:45:27 GMT
Content-Length: 0
After modification the response and including content AI SDK successfully tracks all three documents:
HTTP/1.1 500 Internal Server Error
Cache-Control: no-cache
Pragma: no-cache
Content-Length: 50
Content-Type: text/plain; charset=utf-8
Expires: -1
Server: Microsoft-IIS/8.5
X-AspNet-Version: 4.0.30319
Request-Context: appId=cid-v1:d79f37bd-6fea-487e-af26-f67978f70410
X-Powered-By: ASP.NET
Date: Sat, 11 Nov 2017 06:36:47 GMT
Reference ID: 346bacae-df64-4162-b55d-76711d062ae3
Workaround
Add some content to response.
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When an HTTP response contains only headers and not content (content-size = 0) then AI SDK (2.5-beta1) does not collect such calls as dependencies.
Repro
The following snippet for failure case should track 1) request (failed); 2) dependency (failed); 3) exception:
But with below response it tracks only request and exception but not dependency:
After modification the response and including content AI SDK successfully tracks all three documents:
Workaround
Add some content to response.