Digital Asset Links does not work without a trailing dot

Question

Expample
App link	https://example.web.app
Package Name	com.example.android

Overview

Questions about the development of AppLink.

Deploy .well-known/assetlinks.json, and now viewable via digital link(ex. https://digitalassetlinks.googleapis.com/v1/statements:list?source.web.site=https://example.web.app&relation=delegate_permission/common.handle_all_urls)

The fllowing is its json:

{
  "statements": [
    {
      "source": {
        "web": {
          "site": "https://example.web.app."
        }
      },
      "relation": "delegate_permission/common.handle_all_urls",
      "target": {
        "androidApp": {
          "packageName": "com.example.android",
          "certificate": {
            "sha256Fingerprint": "xxx"
          }
        }
      }
    }
  ],
  "maxAge": "3596.313666292s"
}

Then, in Android emulator, I tried to open by adb command.

Of course, we also set the intent-filter, in AndroidManifest.xml.

<intent-filter android:autoVerify="true">
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:scheme="http" android:host="example.web.app" />
    <data android:scheme="https" android:host="example.web.app" />

adb shell am start -a android.intent.action.VIEW -c android.intent.category.BROWSABLE -d "https://example.web.app"

But it simply opened the browser, but not the app.

Then, I tried the URL with a dot(.) at the end and succeeded in opening the app!

adb shell am start -a android.intent.action.VIEW -c android.intent.category.BROWSABLE -d "https://example.web.app."

AndroidManifest.xml

Add dot at the end

<intent-filter android:autoVerify="true">
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:scheme="http" android:host="example.web.app." />
    <data android:scheme="https" android:host="example.web.app." />

I want to make a successful transition to the application without a trailing dot, any good solution?

Pardon my poor English.

Thank you.

Environment

Native App

• Flutter: 3.13.5

Web Hosting

• Firebase Hosting

Web Frontend

• Next.js: 13.4.7

Setting Files

// public/.well-known/assetlinks.json

[
  {
    "relation": ["delegate_permission/common.handle_all_urls"],
    "target": {
      "namespace": "android_app",
      "package_name": "com.example.android",
      "sha256_cert_fingerprints": ["xxx"]
    },
  }
]

// firebase.json

{
  "hosting": {
    "source": ".",
    "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
    "headers": [
      {
        "source": "/.well-known/apple-app-site-association",
        "headers": [
          {
            "key": "Content-Type", 
            "value": "application/json"
          }
        ]
      },
      {
        "source": "/.well-known/assetlinks.json",
        "headers": [
          {
            "key": "Content-Type", 
            "value": "application/json"
          }
        ]
      }
    ],
    "frameworksBackend": {
      "region": "asia-east1"
    }
  }
}

Note

I think I have done the required settings.

• Deploy .well-known/assetlinks.json
  • Add SHA256 fingerprint
  • See statements list in https://digitalassetlinks.googleapis.com/...
• Add intent-filter
  • android:autoVerify="true"
• Flutter run, in release build