Support HTTP response body if sendDefaultPii and maxResponseBodySize are enabled

[marcellodesales]

Requirement

• We'd like to have full visibility on the logs from the app
• We need to print the full HTTP Request/Response submitted to Sentry
• For whitelisting dozens of apps, it's impossible to double-check the configs for all of them
  • We need ta way to verify how the apps are configured

Design

• We have mobile apps: Flutter (Android, iOS)
• We have Web apps: Flutter (Progressive Web Apps)
• We have backend services: Java, Golang, Python, Node.js

We need a consistent way to turn HTTP requests on/off

[marandaneto]

@marcellodesales thanks for reporting.

not sure if I follow the feature, can you describe the use case?
do you mean when an error happens (eg 500) or every single request even if 200?

See https://docs.sentry.io/platforms/dart/usage/advanced-usage/

The SentryHttpClient class has configurations like captureFailedRequests, can be used along with failedRequestStatusCodes and maxRequestBodySize, does that work?

we don't log response since it could contain PII and it could be quite a huge payload, events cannot be higher than 1MB.

in case none of them work, you can always implement your own HTTP Client calling the Sentry APIs manually eg Sentry.captureEvent(x), Sentry.captureException(x), etc...

[marandaneto]

@marcellodesales any news here? thanks

[marcellodesales]

@marandaneto Sorry I couldn't comment on this earlier... I think it's reasonable to implement it manually as you described since logging may contain PII info for the body, but I don't think it applies for the rest of the HTTP request (verb, headers) when connecting to the sentry servers.

Before I close the ticket, do you think you could support in the basic implementation the option to turn on logging the HTTP request/response from sentry without the body? Everything we are submitting to sentry would be captured... The reason why I'm asking is because we use HTTP Traces with a given specific TransactionID that actually gets to Sentry dashboard as a tag. However, in our systems should be able to track that the specific transactionID was submitted to Sentry...

Anyway, let me know if that's possible...
thank you

[marandaneto]

We do collect some data if the sendDefaultPii is enabled (including headers, verb, request body), see https://github.com/getsentry/sentry-dart/blob/main/dart/lib/src/http_client/failed_request_client.dart#L162-L173
Unfortunately, we can't collect the request and response payload, that's best if you implement your own, you could copy+paste our solution and customize it, I hope that helps.

I'll discuss if the response body would be possible too, but likely not, thanks for clarifying.

[marandaneto]

When this is done, we should actually also add to the develop docs https://develop.sentry.dev/sdk/features/#attaching-request-body-in-server-sdks
This feature does make sense for the other SDKs as well, We'll create issues for the other SDKs to support maxResponseBodySize.