Metamask Connectivity Problem: Unable to connect a mobile device to the desktop DAPP
When designing a decentralized application (DAPP) to Ethereum Blockchain, connecting it to a mobile wallet and browser is very important for an unobtrusive user experience. However, some users have reported connectivity problems using Metamk, popular decentralized finance (defi) wallet and dapps platform.
In this article, we will go into Metamask, which is not connected to the desktop DAPP on mobile devices.
Code Analysis
The code fragment provided seems to be the starting point for setting the Metamk connection in the desktop environment. Significant import statements include:
`JavaScript
Import {web3} from ‘Web3’;
`
However, the rest of the code is incomplete and does not solve any particular problem.
Code debugging
To prevent this problem, we will add some basic consoles to check the process of the Metamask connection. We will also check that all the necessary modules are imported and the variables are defined.
`JavaScript
Console.log (‘Metamk discovered on the desktop’);
if (window.ethum) {
Try {
Console.log (‘compound with ethereum blockchain …’);
Const Web3 = New Web3 (window.ethereum);
// … (the rest of the code remains the same)
`
Connection check
We will use a simple test script to check that Metamk is properly compatible. Create a new file called “Test.Js” and add the following code:
`JavaScript
CONST TESTS = ASYNC () => {
Try {
Expect Web3.eth.net.ws.connect ({
Owner: “Localhost”, // Replace with a local node URL or IP address
Port: 8545,
Timaut: 3000, // Set the timeout to prevent errors
});
Console.log (‘connected to metamas’);
Const metamakurl = wait for Web3.eth.net.ws.getmetadata ({
Owner: “Localhost”, // Replace with a local node URL or IP address
Port: 8545,
});
Console.log (Metamk URL: $ {Metamkurl});
return the truth;
} catch (error) {
Console.Error (‘Error connects to Metamas:’, Error);
return false;
}
};
Test (). Then (((result) => console.log (result)). Catch ((error) => Console.Error (error));
`
Checking mobile device
Now let’s modify the code to check the connection on a mobile device. We will use the local node URL and the port, not “Localhost”. Replace localhost with a local node URL or IP address.
`JavaScript
CONST TESTS = ASYNC () => {
Try {
Const Web3 = New Web3 (New Web3.Providers.httpprovider (‘http: // Localhost: 8545’)); // Replace with mobile node URL
Console.log (‘connected to metamas’);
Const metamakurl = wait for Web3.eth.net.ws.getmetadata ({
Owner: “Localhost”, // Replace with a local node URL or IP address
Port: 8545,
});
Console.log (Metamk URL: $ {Metamkurl});
return the truth;
} catch (error) {
Console.Error (‘Error connects to Metamas:’, Error);
return false;
}
};
`
Examination of the question
To check if the problem is related to a mobile device, we can use a tool such as Tracing.Js or Metamk-Devtools" to check network requests and errors.
JavaScript
Const tracking = required (‘tracking-js’);
Tracing.on (‘http’, (request) => {
Console.log (http request: $ {Request.Method} $ {Request.url});
});
Console.Error (‘Error connects to Metamas:’, Error);
`
Conclusion
By analyzing the code, checking the connection to the desktop and mobile devices, and using debugging tools such as “tracing.JS”, we have identified the question of how Metamk is not connected to the desktop DAPP on mobile devices.