Trusted SSL pinning ignore "hostname mismatch" error

In case, hostname/domain of server is unspecified. I want to use SSL pinning to trust root certificate without hostname/domain.

I tried the with below code:

extension SecTrust {
    func evaluate() -> Bool {
        var trustResult: SecTrustResultType = .invalid
        let err = SecTrustEvaluate(self, &trustResult)
        guard err == errSecSuccess else { return false }
        var allow = [.proceed, .unspecified].contains(trustResult)
        if !allow {
            guard let arr = SecTrustCopyProperties(self) as? [NSDictionary] else {
                return false
            }
            print(String(describing: arr))
            // only ignore in case hostname mismatch.
            if arr.count == 1 {
                if let errMsg = arr[0]["value"] as? String, errMsg.elementsEqual("Hostname mismatch.") {
                    SecTrustSetExceptions(self, SecTrustCopyExceptions(self))
                    SecTrustEvaluate(self, &trustResult)
                    allow = [.proceed, .unspecified].contains(trustResult)
                }
            }
        }
        
        return allow
    }
    
    func evaluateAllowing(rootCertificates: [SecCertificate]) -> Bool {
        // Apply our custom root to the trust object.
        var err = SecTrustSetAnchorCertificates(self, rootCertificates as CFArray)
        guard err == errSecSuccess else {
            return false
        }

        // Re-enable the system's built-in root certificates.
        err = SecTrustSetAnchorCertificatesOnly(self, false)
        guard err == errSecSuccess else { return false }
        
        // Run a trust evaluation and only allow the connection if it succeeds.
        return self.evaluate()
    }
}

extension Bundle {
    func certificate(named name: String, type: String = "der") -> SecCertificate? {
        let cerPath = self.path(forResource: name, ofType: type)!
        let cerData = NSData(contentsOfFile: cerPath)
        let cer = SecCertificateCreateWithData(nil, cerData!)
        return cer ?? nil
    }
}

My code is correct or not?