Hello,
I'm experiencing an issue where WKWebView consistently fails to load a specific URL on the iOS 18.4 simulator (Xcode 16.3). The error is as follows:
Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost."
UserInfo={
_kCFStreamErrorCodeKey=-4,
_kCFStreamErrorDomainKey=4,
NSUnderlyingError=Error Domain=kCFErrorDomainCFNetwork Code=-1005,
NSErrorFailingURLKey=[REDACTED]
}
Key Observations:
This URL fails consistently only on the iOS 18.4 simulator.
The same URL loads without issue in iOS 18.3 and 18.2 simulators.
The backend is serving a valid HTTPS certificate chain, and the server appears to be presenting it properly.
The same application appears to work on a real iPhone running 18.4.
Certificate Chain for the Failing URL
Leaf: WR3 (Valid: Mar 17, 2025 – Jun 15, 2025)
Intermediate 1: GTS Root R1 (Valid: Dec 13, 2023 – Feb 20, 2029)
Intermediate 2: GlobalSign Root CA (Valid: Jun 19, 2020 – Jan 28, 2028)
Other URLs Work Fine in iOS 18.4 Simulator
WKWebView successfully loads the following URLs with similar or more complex certificate chains:
https://google.com → WR2, GTS Root R1, GlobalSign Root CA
https://amazon.com → DigiCert Global CA G2, DigiCert Global Root G2, VeriSign G5
https://stackoverflow.com → E5, ISRG Root X1
https://shopify.com → GlobalSign Root CA, GTS Root R4, WE1
This suggests the issue may not be with general network or certificate trust but instead something specific about how iOS 18.4 handles this domain or certificate configuration in the simulator.
Any insights on how to solve this would be greatly appreciated.
