I got this exception most of the times when I run the app on device, and sometimes on simulator. I can not find the root cause. Any idea?

Error Domain=WKErrorDomain Code=4 "A JavaScript exception occurred" UserInfo={WKJavaScriptExceptionLineNumber=11, WKJavaScriptExceptionMessage=TypeError: Argument 1 ('target') to MutationObserver.observe must be an instance of Node, WKJavaScriptExceptionSourceURL=http://localhost/, NSLocalizedDescription=A JavaScript exception occurred, WKJavaScriptExceptionColumnNumber=13}))

Hi, Currently we are using this library for Google ReCaptcha in apps, for now in development state. While this library was integrated for long time and just now ( like week ago ) we started to have issues with this library. I thought that this was fault of our code / configuration, but after debugging i found that in some cases user is stuck on sign in / sign up because of no response from ReCaptcha library.

our "sign up" flow:

• type credentials
• get recaptcha token
• send recaptcha token along with credentials to API

To Reproduce

• try to use wrong password to be able to invoke captcha multiple times
• repeat until you get following log from webview:

#CAPTCHA LOG: "["log": did load]" "["log": executing]" "["log": resetting]"

• then completion block will not be called

Bug description

Since there is no completion block, app will wait for ReCaptcha result infinitely

Expected behavior

Library always respond with callback ( either error / token / challange )

Logs

responses from webview ( ReCaptchaDecoder::handle )

 "[\"log\": did load]"
 "[\"log\": executing]"
 "[\"log\": resetting]"

Additional context

I noticed that this issue more often occurs on real devices rather than on simulators device i used for debugging: iPhone 7 with iOS 12.1.4

I also tried to find documentation for ReCaptcha and the things you've implemented, but i couldn't find them. Could you share some links in response? (this official link is not sufficient for me, there is no information about statuses)

I call validate(on: view, completion: completion). If I sit there (pretend the user is slow/reading something) the completion continuously calls about every 120 seconds, or, eventually the captcha dialog (img selection) shows up.

ReCaptcha v1.1

ReCaptchaDomain is http://localhost/, but at validate the webview is interrupted with a Javascript exception expecting ReCaptchaDomain in the html?

Unexpected Error: Error Domain=WKErrorDomain Code=4 \"A JavaScript exception occurred\"
UserInfo={WKJavaScriptExceptionLineNumber=24, WKJavaScriptExceptionMessage=TypeError:
Argument 1 (\'target\') to MutationObserver.observe must be an instance of Node,
WKJavaScriptExceptionColumnNumber=13, WKJavaScriptExceptionSourceURL=http://localhost/,
NSLocalizedDescription=A JavaScript exception occurred}"

I am having some problems figuring out how can I hide the webview after displaying the challenge, my code is

recaptcha.validate(on: view) { [weak self] result in
       //some logic here (no recaptcha api calls)
}

after completing the challenge, the puzzle itself disappears, but a blank white screen is all that's left, do I have to hide the webview somehow after completing the challenge?

thanks for the great effort you put in this library

Hello I am using ReCaptcha v1.3.1 and my validate calling has no effect.

Steps to reproduce:

1. In didLoad I create my ReCaptcha instance in Controller
2. Call validate method
3. Don't see a WebView widget with google recaptcha quiz

Also I noticed that if I comment this if statement it works properly. With this modification I see Recaptcha widget on the screen and also get a response token in success callback. So debug tells me that didFinishLoading of ReCaptchaWebViewManager instance equals false and it returns immediately from the execute method.

Could you help me with this?

Thank a lot for lib.

There are a few errors that are thrown when trying to compile against Swift 4.2 so I made some fixes. I doubt you want the changes to go in to target the Swift 4.2 version so let me know how to proceed with any changes necessary.

Hi, I have installed pod "ReCaptcha" and follow your usage description but when i run app and click a button, the Webview doesn't show up. This is my code, please give a look and tell me what is wrong. Thank you.

class ConfirmViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
    // Outlets
    @IBOutlet weak var btnReceivedPlace: UIButton!
    @IBOutlet weak var stackView: UIStackView!
    @IBOutlet weak var pickerReceivedPlace: UIPickerView!
    
    // Varibles
    var receivedPlacePosition: Int = 0
    fileprivate let recaptcha = try! ReCaptcha()
    fileprivate static let webViewTag = 123
    
    override func viewDidLoad() {
        super.viewDidLoad()
        pickerReceivedPlace.dataSource = self
        pickerReceivedPlace.delegate = self
        
        recaptcha.configureWebView { [weak self] webview in
            webview.frame = self?.view.bounds ?? CGRect.zero
            webview.tag = ConfirmViewController.webViewTag
        }
    }
    
    @available(iOS 2.0, *)
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
        return receivedPlaceArr.count
    }
    
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return receivedPlaceArr.count
    }
    
    func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
        var label = view as! UILabel!
        
        if label == nil {
            label = UILabel()
        }
        let data = receivedPlaceArr[row]
        let title = NSAttributedString(string: data, attributes: [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 14.0, weight: UIFont.Weight.regular)])
        label?.attributedText = title
        label?.textAlignment = .center
        return label!
    }
    
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        btnReceivedPlace.setTitle(receivedPlaceArr[row], for: .normal)
        pickerReceivedPlace.isHidden = true
    }
    
    @IBAction func btnReceivedPlaceClick(_ sender: Any) {
        pickerReceivedPlace.isHidden = false
    }
    
    @IBAction func btnCaptchaClick(_ sender: Any) {
        print("btnCaptcha clicked")
        
        recaptcha.validate(on: view) { (result) in
            print(try! result.dematerialize())
        }
    }
    
    func saveInfo() -> Confirm {
        return Confirm(receivedPlaceId: "\(receivedPlacePosition)")
    }

I make a view like that and when clicking on I'm not robot image I will call validate.

Hi, I'd like to ask if it is possible to remove recaptcha web view even if the validation does not return a token. In my particular case, before pressing 'verify' button I turned off my connectivity. The result is a white screen which is impossible to remove.

Thanks for the support,

Andrea

This is still broken on version 1.0.1 for us. iOS 11.0 iPhone 6 device. This ONLY seems to be an issue on iOS 11.0 so far; not on any minor/major revisions after it. We are getting the following error from the ReCaptcha library: Error Domain=WKErrorDomain Code=4 "A JavaScript exception occurred" UserInfo={WKJavaScriptExceptionLineNumber=16, WKJavaScriptExceptionMessage=TypeError: undefined is not an object (evaluating 'document.getElementsByTagName("div")[4].outerHTML = ""'), WKJavaScriptExceptionColumnNumber=44, WKJavaScriptExceptionSourceURL=https://ourdomain.com/, NSLocalizedDescription=A JavaScript exception occurred}

The curious thing is that this causes an exception every other time we kick off the ReCaptcha webview flow. The following time we get a successful result. Any ideas?

Update: As mentioned from @fjcaetano: that seems to be a different error. It appears to have been introduced with 78fa352, since it fails on getElementsByTagName("div")[4].

Could you open a new issue so we can address this?

Also, as a workaround, could you try removing that line from recaptcha.html to check if the issue stops?

If I call the validate function for the second time it doesn't respond, the log only says [JS LOG]: executing and the completion is not called waiting forever.

The bug can be reproduce in the "Example" project also, tapping validate button first time works but not the second time.

Hi, I am updating the ReCaptcha framework by using Carthage. I have taken latest version 1.6.0 but while update it I got following error

Skipped installing ReCaptcha binary due to the error: "Incompatible Swift version - framework was built with 5.3 (swiftlang-1200.0.29.2 clang-1200.0.30.1) and the local version is 5.7.1 (swiftlang-5.7.1.135.3 clang-1400.0.29.51)."

Using Xcode version is 14.1

Anyone having this problem?

I'm using ReCaptcha v2 Invisible keys! In my application I'm adding webview inside my custom view and then after getting token just removing it from my custom view and hiding the custom view.

My question is I want to change frame of widget screen of ReCaptcha(challenge selection) which is being shown within webview, plus needed to be transparent webview so background base view controller can be visible.

is it possible ?

Thank you.

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Bug description

As the title says, the reCaptcha won't load on iOS 15.1.1 with and iPhone 13 pro. To be more specific, when performing the validate method, the webview wont appear above the current view.

I followed the path, and before the executeJS method is called, the webview must be set to visible, but this do not happen. So because of this, the webview never appears and the validate won't throw any errors.

This bug don't happened on older versions, like iOS 14.6 or lesser.

To Reproduce

Run on iPhone 13 Pro - iOS15.1.1

Steps to reproduce the behavior:

1. Setup the reCaptcha

let recaptcha = try? ReCaptcha(
    apiKey: Constants.captchaKey,
    baseURL: URL(string: Constants.captchaURL)!,
    endpoint: .alternate
)

2. Configure the reCaptcha

recaptcha?.configureWebView { [weak self] webview in
    webview.frame = self?.view.bounds ?? CGRect.zero
}

3. Validate

recaptcha?.validate(on: view) { [weak self] (result: ReCaptchaResult) in
    // the callback will never be called
}

Expected behavior

The expected behavior should be the same as the older versions, to add the webview to the current view and show the captcha images.

Logs

The reCaptcha library don't throws any errors.

Additional context

We are using the .alternate endpoint but the error is present regardless if is .default or .alternate