Metamk communication problem: You can’t connect to Web3Provider for the second time
As a developer that builds the React NFT market in Polygon, he probably found a frustration related to finding communications problems with the network supplier. In this article, we will deepen the details why Metamk/Web3Provider cannot connect to the second time and give tips to solve this problem.
problem:
When the user creates NFT on our platform, he is asked to connect the Metamask portfolio to interact with it. However, after a successful connection for the first time, the Web3 supplier does not connect again for the second time, which causes communication problems when trying to create, buy or return to NFT.
Why is this happening?
Several factors contribute to this problem:
- This process can be interrupted, causing problems when the connection is already established.
- waiting time for the portfolio session
: When the user closes the portfolio, the waiting time for the session may prevent automatic connection of the Web3 supplier. This waiting time is generally set in 60 seconds by default, but it may vary depending on the portfolio and operating system.
- Network goats : Problems with network breaks or DNS resolution between the portfolio and our platform may cause communication problems.
solutions:
To solve this problem, we recommend implementing the following solutions:
1.
- Use the web3provider with advanced options : Use a web3 supplier such as `
adapter 'o'ethhers.js, which provides greater control over the re -connection process and allows better optimization.
3.
Sample code:
Here is an example of how I could implement the re -connection mechanism using the “portfolio adapter” Metamsk and “Ethers.js”:
`Javascript
Import {Walletadapter} with "@Metamsk/Web3-Provider";
Import {Ethers} "Ethers";
Const WalletaPter = New Walletadapter ();
Proport a specific function async connectallet () {
attempt {
Const A Provider = Appeal Walletadapter.connect ();
// Use the connected supplier for subsequent operations
} capt (error) {
Console.error ("error connecting to the portfolio:", error);
// Enter the attempt to re -connect after a short delay
Settimaut (ConnectWallet, 5000) .catch (() => null);
}
}
` ”
In this example, we use “Connect” to make a connection to the Metamask supplier and store it in a variable “supplier”. Then we try to connect again using “Connect” after a delay of 5 seconds. If the error occurs during re -connection, we register the error and introduce another attempt to re -connect.
When implementing these solutions or modifying the existing code, you must be able to solve the problem of communication with Metamask/WEB3Provider for the second time when creating, buying or reducing NFT on our React NFT market.