Here is an article that explains what might be happening if you see the “Network Request Failed” error message even though the signature is successful:
Metamask’s Approval Feature: A Guide for React Native DApp Developers
As a React Native developer building decentralized applications (dApps) with Ethereum, you’ve probably come across MetaMask’s approval feature. The approval feature is used to validate incoming transactions on the Ethereum network before they are executed. However, when it comes to interacting with Metamask and signing transactions with the approval feature, things can get a little more complicated.
The “Network Request Failed” Error
When you call the “approval” feature from your dApp, Metamask sends a request to the Ethereum network to validate the transaction. This request is typically handled by the [Ethereum Gas Station]( which can be affected by various factors.
Common Causes of “Network Request Failed” Errors
Here are some common reasons why you might see this error message:
- Gas Station Down
: Ethereum gas stations may be experiencing technical issues that may cause delays or failures in processing gas requests.
- Ethereum Network Congestion: High traffic on the Ethereum network can lead to increased latency and decreased success rates for gas station requests.
- Signatory Address Issues: Issues with your MetaMask account or wallet configuration may prevent the approval function from working properly.
Approve Function Return Values
When called, the “approve” function returns an integer value indicating whether the transaction was approved successfully. However, in some cases, this value can be negative, such as “-32000”. This may seem confusing at first, but let’s take a closer look at what can cause this error.
Successful signing vs. network request failure
When the “approve” function is called, it returns an integer value indicating whether the transaction was approved successfully. However, in some cases, this value can be negative, such as “-32000”. This may seem confusing at first, but the following reasons can cause this error:
- Successful signing: If the transaction was successfully signed with a private key or token, the “approve” function should return a positive integer (e.g. 0). However, if there is a problem during the signing, such as a key conflict or invalid token format, it may return a negative value (-32000).
- Network Request Error: If Metamask encounters a problem with your Ethereum account or wallet configuration, it may not be able to send the necessary requests to the Gas Station. This can lead to errors and return values such as “-32000”.
Mitigating the Issue
To resolve this issue, try the following:
- Monitor Gas Station Uptime: Monitor the health and performance of your Ethereum Gas Station.
- Optimize MetaMask Wallet Configuration: Ensure that your MetaMask account is properly configured, with a valid private key or token format.
- Test your dApp thoroughly: Verify that your dApp is working properly, including the approval feature and gas station interaction.
By understanding what might be causing this error, you can take steps to resolve it and ensure that transactions continue to execute smoothly on the Ethereum network.