Our application has initiated an NSURLSession data task, and we have received an initiation ID. However, Application not received callback on the subsequent activity: the task has not been requested, has not timed out, and no error callback has been received.
[06/17 09:29:40:559][ 0x282a7d8c0] Requested TaskIdentifier 120
2025-06-17 09:29:40.623337 +0530 nsurlsessiond SUBMITTING: com.apple.CFNetwork-cc-166-373-Task .<120>:A71666 default
2025-06-17 09:29:40.631280 +0530 dasd Submitted Activity: com.apple.CFNetwork-cc-166-373-Task .<120>:A71666 at priority 10 default
Seen couple of rejection with for CPUUsagePolicy and MemoryPressurePolicy
2025-06-17 09:29:40.989360 +0530 dasd com.apple.CFNetwork-cc-166-373-Task .<120>:A71666:[
{name: CPUUsagePolicy, policyWeight: 5.000, response: {Decision: Must Not Proceed, Score: 0.00, Rationale: [{[Max allowed CPU Usage level]: Required:90.00, Observed:95.00},]}}
{name: MemoryPressurePolicy, policyWeight: 5.000, response: {Decision: Must Not Proceed, Score: 0.00, Rationale: [{[memoryPressure]: Required:1.00, Observed:2.00},]}}
], FinalDecision: Must Not Proceed} default
2025-06-17 10:55:22.500277 +0530 dasd com.apple.CFNetwork-cc-166-373-Task .<120>:A71666:[
{name: MemoryPressurePolicy, policyWeight: 5.000, response: {Decision: Must Not Proceed, Score: 0.00, Rationale: [{[memoryPressure]: Required:1.00, Observed:2.00},]}}
], FinalDecision: Must Not Proceed} default
And more an hour later then it throws with an error BUT NEVER indicated the same to client
2025-06-17 10:55:27.426549 +0530 WAVE PTX Task .<120> is for <>.<>.<120> default
2025-06-17 10:55:27.776951 +0530 nsurlsessiond Task .<120> summary for task failure {transaction_duration_ms=5147145, response_status=-1, connection=0, reused=1, request_start_ms=0, request_duration_ms=0, response_start_ms=0, response_duration_ms=0, request_bytes=0, response_bytes=0, cache_hit=false} default
2025-06-17 10:55:27.777096 +0530 nsurlsessiond NDSession <714296D7-20F9-4A0A-8C31-71FB67F39A56> Task .<120> for client will be retried after error Error Domain=_nsurlsessiondErrorDomain Code=6 UserInfo={NSErrorFailingURLStringKey=, NSErrorFailingURLKey=, _NSURLErrorRelatedURLSessionTaskErrorKey=, _NSURLErrorFailingURLSessionTaskErrorKey=} - code: 6 default
Then It got resumed and says successful but never got any callback on the same to client
2025-06-17 10:55:28.877245 +0530 nsurlsessiond NDSession <714296D7-20F9-4A0A-8C31-71FB67F39A56> Task .<120> resuming default
2025-06-17 10:55:55.225456 +0530 nsurlsessiond Task .<120> received response, status 401 content K default
2025-06-17 10:55:55.250371 +0530 nsurlsessiond Task .<120> finished successfully default
Please refer feedback for diagnose logs:
https://feedbackassistant.apple.com/feedback/18173303