SSL error

[FightingDEV]

Hay,

i'm having a xamp server on a machine with a self signed certificate.
I need to login to the website but because of the ssl the website is white.

`
@OverRide
void initState() {
super.initState();
final flutterWebviewPlugin = new FlutterWebviewPlugin();
flutterWebviewPlugin.onHttpError.skip(1000);
flutterWebviewPlugin.launch("https url to website", hidden: true, allowFileURLs: true, appCacheEnabled: true,withJavascript: true, withLocalStorage: true, withZoom: true);

flutterWebviewPlugin.onHttpError.skip(1000);

    flutterWebviewPlugin.onStateChanged((state) async){
    flutterWebviewPlugin.evalJavascript("document.getElementById(\"name\").innerText = \"username\"");
    flutterWebviewPlugin.evalJavascript("document.getElementById(\"password\").innerText = \"pw\"");
    flutterWebviewPlugin.evalJavascript("document.getElementById(\"loginbutton\").invokeMember(\"click\")");
    var test = flutterWebviewPlugin.evalJavascript("document.getElementById(\"errorbox\").innerText");
     }; 


flutterWebviewPlugin.dispose();
flutterWebviewPlugin.close();

}
`

Is there a way to catch up the ssl error "Failed to validate the certificate chain, error: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found." and ignore it?

[AlexV525]

Do you still stuck on it? I have a solution.

[FightingDEV]

Thanks for the answer.
I fixed it already by adding the OnReceivedSSlError in the Android and IOS part of the webview.

Do you have got an other solution?

[AlexV525]

Same as you.😁 Bad certificate sucks.

[jessicaxxxxxxx]

hi, my friends, can i share your solution, where could i add the OnReceivedSSlError and do you still use this webview plugin? i have the same question, but i just start to learn flutter app.
hope your reply.

[AlexV525]

@jessicaxxxxxxx Hello mate :) Solution goes here:
Locate to flutter\.pub-cache\hosted\pub.flutter-io.cn\flutter_webview_plugin-0.3.3\android\src\main\java\com\flutter_webview_plugin\WebviewManager.java
Add below content to the code.

import android.net.http.SslError;
import android.webkit.SslErrorHandler;

Then line 85:
webViewClient = new BrowserClient();
Changed to:

webViewClient = new BrowserClient() {
    public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
        handler.proceed();
    }
};

[jessicaxxxxxxx]

@AlexVincent525 thanks for your quick reply. but it seems that you integrated flutter in a native android project, and i used this plugin in native flutter project, so my files are all .dart files, i can not find the above path and .java file. so do you have the same experences?

[AlexV525]

@AlexVincent525 thanks for your quick reply. but it seems that you integrated flutter in a native android project, and i used this plugin in native flutter project, so my files are all .dart files, i can not find the above path and .java file. so do you have the same experences?

Nope. My project is flutter native too. This file was not in your flutter project, it's a dart package which located in flutter sdk.
About how to locate this file, in Android Studio for example, Ctrl+LeftClickMouse on new FlutterWebviewPlugin() in your code, the path will shown on top. Then you can find this file as what i said before.

[jessicaxxxxxxx]

@AlexVincent525 thanks for your quick reply. but it seems that you integrated flutter in a native android project, and i used this plugin in native flutter project, so my files are all .dart files, i can not find the above path and .java file. so do you have the same experences?

Nope. My project is flutter native too. This file was not in your flutter project, it's a dart package which located in flutter sdk.
About how to locate this file, in Android Studio for example, Ctrl+LeftClickMouse on new FlutterWebviewPlugin() in your code, the path will shown on top. Then you can find this file as what i said before.

hi, AlexVincent525 I got it, it was very useful for android, and i have tried to solve the problem for ios in the same way, but i failed, so could you do me a favor again? please

[AlexV525]

@jessicaxxxxxxx Hi, plz paste your error message here, cause iOS might not facing this problem.

[E2-Mohamed]

@AlexVincent525: i'm using Kotlin in flutter not java, i'm not able to locate the file WebviewManager.java, but i've reached here

and the by cmd+leftclick on FlutterWebViewPlugin() i went here

Now what should i do ?

[AlexV525]

@mohamedyaseen Hi, you haven't reached the android path. Right click on webview_scaffold.dart and select Show in Explorer, then go to ../../android/src/main/java/com/flutter_webview_plugin, you'll see it. It's not related whether you are using kotlin or java.

[E2-Mohamed]

Got it, Here it is :) Thanks for your help.

[E2-Mohamed]

@jessicaxxxxxxx i had the same problem in iOS, i fixed it by adding the following code in FlutterWebviewPlugin.m

`- (void)webView:(WKWebView *)webView didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler {
SecTrustRef serverTrust = challenge.protectionSpace.serverTrust;
CFDataRef exceptions = SecTrustCopyExceptions(serverTrust);
SecTrustSetExceptions(serverTrust, exceptions);
CFRelease(exceptions);

completionHandler(NSURLSessionAuthChallengeUseCredential,
                  [NSURLCredential credentialForTrust:serverTrust]);

}`

[avirias]

@jessicaxxxxxxx Hello mate :) Solution goes here:
Locate to flutter\.pub-cache\hosted\pub.flutter-io.cn\flutter_webview_plugin-0.3.3\android\src\main\java\com\flutter_webview_plugin\WebviewManager.java
Add below content to the code.

import android.net.http.SslError;
import android.webkit.SslErrorHandler;

Then line 85:
webViewClient = new BrowserClient();
Changed to:

webViewClient = new BrowserClient() {
    public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
        handler.proceed();
    }
};

It helped me. thanks man

[fkranenburg]

This solution works, but I don't like to change the source code this way. Is there another option?