Network connection lost error (-1005) on iOS Simulator using reCAPTCHA SDK

[rashidlatif55]

I'm integrating the reCAPTCHA Enterprise Mobile SDK into my iOS app. When running on the iOS Simulator, I consistently receive the error:

Full log:

nw_connection_copy_connected_local_endpoint_block_invoke [C23] Connection has no local endpoint
nw_connection_copy_connected_local_endpoint_block_invoke [C23] Connection has no local endpoint
quic_conn_change_current_path [C23.1.1.1:2] [-edd11e60723c5a73] tried to change paths, but no alternatives were found
nw_flow_service_writes Failing write request <nw_write_request> [57: Socket is not connected]
nw_write_request_report [C23] Send failed with error "Socket is not connected"
Task <F287C097-F14E-4D20-8ED4-5BDEDEB546F9>.<7> HTTP load failed, 134/0 bytes (error code: -1005 [4:-4])
nw_connection_copy_connected_local_endpoint_block_invoke [C23] Connection has no local endpoint
Task <F287C097-F14E-4D20-8ED4-5BDEDEB546F9>.<7> finished with error [-1005] Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x600000ccec40 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x600002159c70 [0x1e6ebb4f0]>{length = 16, capacity = 16, bytes = 0x100201bb8efab5630000000000000000}, _kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <F287C097-F14E-4D20-8ED4-5BDEDEB546F9>.<7>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <F287C097-F14E-4D20-8ED4-5BDEDEB546F9>.<7>"
), NSLocalizedDescription=The network connection was lost., NSErrorFailingURLStringKey=https://www.recaptcha.net/recaptcha/api3/mlg, NSErrorFailingURLKey=https://www.recaptcha.net/recaptcha/api3/mlg, _kCFStreamErrorDomainKey=4}
nw_protocol_implementation_lookup_path [C23.1.1.1:2] No path found for b074b290925e636
0x10d868818 23 Server protocol violation 0x02
0x10d868818 23 Control stream closed but connection is alive

What I’ve tried:

• Verified my internet connection (working fine)

• Switched between multiple networks (Wi-Fi / hotspot)

• Tested using the official demo project from: https://github.com/GoogleCloudPlatform/recaptcha-enterprise-mobile-sdk/tree/main/examples/ios/basic

Would appreciate any guidance or workarounds on this. Happy to help debug further or provide test logs.

[walterjgsp]

Hi @rashidlatif55, thanks for creating the bug. Some questions so I can investigate this from my side. What's the Xcode version being used? Is this happening in a real device or just in the simulator? Is this error crashing your app and stopping you from using the SDK or is just a warning in the console log?

[josh150]

I've also been seeing this on some of my simulators (but my physical device has been fine) with Xcode 16.3. I created a new simulator running iOS 18.2 and that device is working for now. But existing simulators running iOS 18.4 have this behavior.

It is not a crash but it prevents the execute action request from working which means I cannot authenticate with my API.

If it helps, these simulators appear to be blocking most if not all third party requests. My logs are full of similar logs for Firebase, Sentry, and Heap. I tried adding tracking details to the privacy info file but that didn't appear to help.

[walterjgsp]

Seems related to https://developer.apple.com/forums/thread/777999.

[rashidlatif55]

@walterjgsp Thank you for the quick response!

Here are the details you asked for:

Xcode version: 16.3

Simulator version: 18.4

Device: The issue only occurs on the Simulator (18.4); it works fine on a real device.

I also downloaded the iOS 18.3 simulator, and the SDK works correctly there, no errors in the console and everything functions as expected.

The error does not crash the app, but it prevents authentication from completing, so the SDK is effectively unusable on the 18.4 simulator due to this issue.

Let me know if I can provide any additional info or logs to help with debugging. Thanks again for looking into this!

[loinsir]

I have the same problem with the same version

[mcorner]

More info here: firebase/firebase-ios-sdk#14728

[ernestofndz]

The problem is definitely on the 18.4 simulator. So far I haven't seen issues with Xcode 16.4 RC running on 18.5 simulator.