Wallet Connect Universal Link URI does not connect on Android

[amytang0]

Describe the bug Wallet Connections using the Universal Link scheme do not trigger a wallet connection on Android apps, but rather only opens the app. This is because the app link that Metamask is using (through the Branch SDK) redirects to an Android Intent string that drops all parameters from the initial url and only appends an link_click_id.

Potential solutions:

1. Allow appending the wc:uri , so that it can go through the existing WC connection code path in DeeplinkManager.js
2. Disallow Branch from intercepting the wc subpath (i.e. metamask.app.link/wc), and allow the app to handle the deeplink manually

Screenshots The redirect to "intent://open?link_click_id=" happening on a spoofed Android user-agent

The Branch dashboard where the link needs to be updated to append new parameters

To Reproduce Steps to reproduce the behavior

1. Generate a Wallet Connect URI with the universal scheme (e.g. https://metamask.app.link/wc?uri=wc%3A50eb69e9-fbf2-4b0f-ab25-33b17c3a1603%401%3Fbridge%3Dhttps%253A%252F%252Fh.bridge.walletconnect.org%26key%3D4ea00fab4c833eba697217edf88d58c655ef6cc4338e12105a28607030e30ca3) (this was generated from example.walletconnect.org using a spoofed iOS user-agent)
2. Copy this uri into the Chrome browser on an Android device that has Metamask installed
3. Metamask opens but does not ask to connect wallet.

Expected behavior Metamask should ask to connect wallet using the universal link on Android (like it does on iOS)

Smartphone (please complete the following information):

• Device: Pixel 3, Samsung S21
• OS: Android (any)
• App Version [e.g. 1.0.0] - master

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to be added after bug submission by internal support / PM Severity

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• Is this tech debt?

[tommasini]

Hello @amytang0 , thanks for reporting.

Could you check the android settings of your devices? Open Android settings , search 'default' and select "Choose Default apps' > "Choose Default apps" > Opening Links > scroll down to MetaMask and tap it > Supported Web addresses > check if links are selected or "verified/trusted" by default (most importantly metamask.app.link). If they are not, then check them/it.

Let me know if it worked for you!

[amytang0]

Yes, I've actually turned on all the supported links for the Metamask app setting. The redirection/transformation to the "intent://" uri is occurring on the metamask.app.link website, which means that by the time the redirect happens to the app, it is actually bypassing the "Android App Link" mechanism.

I also decompiled the public Metamask app to grab the same Branch keys from there, so it's definitely the Branch settings on the dashboard that are causing this redirect.

[w4-jake]

Hi there,

Any update on this? I am seeing the same behavior (Metamask Mobile opening, but no connection triggered and no pop-up prompting me to connect) when opening the following URIs in the chrome browser on an Android device:

1. ${walletConnectUri} (here, the browser first prompts me to choose how to open the link, and when I choose Metamask, Metamask opens but no connection popup shows.)
2. metamask://wc?uri=${walletConnectUri} (this works properly when opening in Safari on an iOS device!)
3. https://metamask.app.link/wc?uri=${walletConnectUri}

Here, walletConnectUri is the URI provided by WalletConnect upon creating a session, such as:

wc:00e46b69-d0cc-4b3e-b6a2-cee442f97188@1?bridge=https%3A%2F%2Fbridge.walletconnect.org&key=91303dedf64285cbbaf9120f6e9d160a5c8aa3deb67017a3874cd272323f48ae

[w4-jake]

For anyone trying to reproduce the issue, I made a sample Flutter app that hopefully should help! Also lets you check on other platforms. Please let me know if there's any more info or support I can provide!

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity in the last 90 days. It will be closed in 7 days. Thank you for your contributions.

[github-actions[bot]]

This issue was closed because it has been stalled for 7 days with no activity. If you feel this was closed in error please reopen and provide evidence on the current production app. Thank you for your contributions.