RCN Fetch failure: cannot parse response #14728

komal-lathiya · 2025-04-16T08:54:34Z

Description

11.11.0 - [FirebaseRemoteConfig][I-RCN000026] RCN Fetch failure: Error Domain=NSURLErrorDomain Code=-1017 "cannot parse response"

I have implemented Firebase Remote configuration in my project. It was working fine but, suddendly it was stop working in iPhone simulator. I got the below logs in my console.

11.11.0 - [FirebaseRemoteConfig][I-RCN000026] RCN Fetch failure: Error Domain=NSURLErrorDomain Code=-1017 "cannot parse response" UserInfo={_kCFStreamErrorCodeKey=-1, NSUnderlyingError=0x600000c8fcc0 {Error Domain=kCFErrorDomainCFNetwork Code=-1017 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x6000026356e0 [0x1e6ebb4f0]>{length = 28, capacity = 28, bytes = 0x1c1e01bb000000002404680040090827 ... 0000200a00000000}, _kCFStreamErrorCodeKey=-1, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1>" ), NSLocalizedDescription=cannot parse response, NSErrorFailingURLStringKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, NSErrorFailingURLKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, _kCFStreamErrorDomainKey=4}. No cached config result. 11.11.0 - [FirebaseRemoteConfig][I-RCN000026] RCN Fetch failure. Response http error code: 0

What I have tried

Try Different versions of simulators, Clear Simulator data, Try diffrent models of Simulator
Checked my Internet connection, and it was good
Working fine with real devices

Reproducing the issue

Integrate Firebase Remote config using SPM & run in iOS Simulator.

Firebase SDK Version

11.11.0

Xcode Version

16.3

Installation Method

Swift Package Manager

Firebase Product(s)

Remote Config

Targeted Platforms

iOS

Relevant Log Output

Task <AD459EB7-46E3-416F-B8DB-390046165497>.<2> finished with error [-1005] Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x600000d0a880 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x6000026821c0 [0x1139001d0]>{length = 28, capacity = 28, bytes = 0x1c1e01bb000000002404680040090822 ... 0000200a00000000}, _kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <AD459EB7-46E3-416F-B8DB-390046165497>.<2>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <AD459EB7-46E3-416F-B8DB-390046165497>.<2>"
), NSLocalizedDescription=The network connection was lost., NSErrorFailingURLStringKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, NSErrorFailingURLKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, _kCFStreamErrorDomainKey=4}

Error: The network connection was lost.

Task <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1> finished with error [-1017] Error Domain=NSURLErrorDomain Code=-1017 "cannot parse response" UserInfo={_kCFStreamErrorCodeKey=-1, NSUnderlyingError=0x600000c8fcc0 {Error Domain=kCFErrorDomainCFNetwork Code=-1017 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x6000026356e0 [0x1e6ebb4f0]>{length = 28, capacity = 28, bytes = 0x1c1e01bb000000002404680040090827 ... 0000200a00000000}, _kCFStreamErrorCodeKey=-1, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1>"
), NSLocalizedDescription=cannot parse response, NSErrorFailingURLStringKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, NSErrorFailingURLKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, _kCFStreamErrorDomainKey=4}

11.11.0 - [FirebaseRemoteConfig][I-RCN000026] RCN Fetch failure: Error Domain=NSURLErrorDomain Code=-1017 "cannot parse response" UserInfo={_kCFStreamErrorCodeKey=-1, NSUnderlyingError=0x600000c8fcc0 {Error Domain=kCFErrorDomainCFNetwork Code=-1017 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x6000026356e0 [0x1e6ebb4f0]>{length = 28, capacity = 28, bytes = 0x1c1e01bb000000002404680040090827 ... 0000200a00000000}, _kCFStreamErrorCodeKey=-1, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <75FD4372-12F3-4F23-B6C0-49509335D1FC>.<1>"
), NSLocalizedDescription=cannot parse response, NSErrorFailingURLStringKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, NSErrorFailingURLKey=https://firebaseremoteconfig.googleapis.com/v1/projects/[projname]-88a56/namespaces/firebase:fetch?key=AIzaSyBnHsFa3O_kKPZP9FubXVLpm40YeWb0r6E, _kCFStreamErrorDomainKey=4}. No cached config result.
11.11.0 - [FirebaseRemoteConfig][I-RCN000026] RCN Fetch failure. Response http error code: 0

Error: cannot parse response

If using Swift Package Manager, the project's Package.resolved

Expand Package.resolved snippet

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If using CocoaPods, the project's Podfile.lock

Expand Podfile.lock snippet

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The text was updated successfully, but these errors were encountered:

google-oss-bot · 2025-04-16T08:54:52Z

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

rizafran · 2025-04-16T11:57:27Z

Hi @komal-lathiya, I tried to reproduce but I'm unable to get the same issue. Have you tried connecting to different network?

stephenheron · 2025-04-16T14:16:35Z

We are seeing some similar issues this is happening in production on iOS only. Android seems fine. This is potentially a critical issue?

paulb777 · 2025-04-16T14:44:17Z

It's possible that this is related to a bug in the iOS 18.4 simulator. Does it help to use an older simulator? See #14677 (comment)

komal-lathiya · 2025-04-17T04:24:56Z

This is a critical issue. I have tried different networks and different versions of simulators, and I have also tried erasing all data from the simulator, but nothing works.

cap-vinaynaikade · 2025-04-17T07:33:21Z

We’re encountering the same issue on iOS devices, but it does not occur on simulators running iOS versions earlier than 18.4.

kupresk14 · 2025-04-17T18:38:06Z

FYI I do not think this is secluded to just simulators. However to reproduce open a different iPhone simulator type each run, it will trigger it more often than not on 18.4 simulators

jscalo · 2025-04-21T01:10:46Z

This happens to me in 18.4 sims but not 18.2 sims.

Firebase: 11.11.0
Xcode: 16.3

dsjadaun-google · 2025-04-21T15:30:41Z

@paulb777 is there a chance you can assign it to @tusharkhandelwal8 as he is looking into this. Somehow every comment on this thread is reassigning our internal bug to me.

tusharkhandelwal8 · 2025-04-23T07:15:33Z

Hi, we are able to reproduce this issue on the iOS 18.4 Simulator. It's a known issue, as discussed here: https://developer.apple.com/forums/thread/777999. We are raising a fix for this. However, we couldn't reproduce this issue on other simulators and devices. Could you please share which other simulator versions you have tried? Also, are you getting the exact same logs? If the logs are different, could you please share them as well?

komal-lathiya · 2025-04-23T10:17:21Z

Hi @tusharkhandelwal8 , You can consider iOS 18.4 Simulators for now.

paulb777 · 2025-04-29T16:39:14Z

The fix was merged from #14768 and will release as part of 11.13.0 planned for the week of May 15th

google-oss-bot added the needs-triage label Apr 16, 2025

rizafran added api: remoteconfig and removed needs-triage labels Apr 16, 2025

rizafran added the needs-info label Apr 16, 2025

google-oss-bot added needs-attention and removed needs-info labels Apr 17, 2025

paulb777 assigned dsjadaun-google Apr 17, 2025

mcorner mentioned this issue Apr 18, 2025

Network connection lost error (-1005) on iOS Simulator using reCAPTCHA SDK GoogleCloudPlatform/recaptcha-enterprise-mobile-sdk#141

Open

ncooke3 assigned tusharkhandelwal8 and unassigned dsjadaun-google Apr 21, 2025

paulb777 added this to the 11.13.0 - M164 milestone Apr 23, 2025

paulb777 closed this as completed Apr 29, 2025

walterjgsp mentioned this issue May 5, 2025

Network Error in iOS Simulator GoogleCloudPlatform/recaptcha-enterprise-flutter#70

Closed

xVemu mentioned this issue May 13, 2025

[firebase_remote_config]: FirebaseException on fetchAndActivate during startup. firebase/flutterfire#17349

Open

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RCN Fetch failure: cannot parse response #14728

RCN Fetch failure: cannot parse response #14728

komal-lathiya commented Apr 16, 2025 •

edited

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rizafran commented Apr 16, 2025

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komal-lathiya commented Apr 17, 2025

cap-vinaynaikade commented Apr 17, 2025

kupresk14 commented Apr 17, 2025

jscalo commented Apr 21, 2025

dsjadaun-google commented Apr 21, 2025

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RCN Fetch failure: cannot parse response #14728

RCN Fetch failure: cannot parse response #14728

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komal-lathiya commented Apr 16, 2025 • edited Loading

Description

What I have tried

Reproducing the issue

Firebase SDK Version

Xcode Version

Installation Method

Firebase Product(s)

Targeted Platforms

Relevant Log Output

If using Swift Package Manager, the project's Package.resolved

If using CocoaPods, the project's Podfile.lock

google-oss-bot commented Apr 16, 2025

rizafran commented Apr 16, 2025

stephenheron commented Apr 16, 2025

paulb777 commented Apr 16, 2025

komal-lathiya commented Apr 17, 2025

cap-vinaynaikade commented Apr 17, 2025

kupresk14 commented Apr 17, 2025

jscalo commented Apr 21, 2025

dsjadaun-google commented Apr 21, 2025

tusharkhandelwal8 commented Apr 23, 2025

komal-lathiya commented Apr 23, 2025

paulb777 commented Apr 29, 2025

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komal-lathiya commented Apr 16, 2025 •

edited

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