Ethereum JSON-RPC Customer Returns 401 Error Answer
In the last few days, when trying to execute the PHP scripts from the command line, a common mistake was observed using an Ethereum-based customer such as php-ethereum. Specifically, the "JSONRPCLENT.PHP" has reported 401 errors reply after submitting the request.
What happens:
The issue arises when trying to connect to the Ethereum network using the JSON-RPC protocol. The file “JSONRPCLENT.PHP is trying to fulfill your Ethereum node obtained request, but instead of returning the estimated data, it receives 401 error reactions indicating an authentication failure.
Causes and effects:
401 errors are usually caused by insufficient or expiration terms for the Ethereum network. Here are some possible reasons that contribute to this question:
1
Incorrect credentials : File jsonrpcclient.php can use an obsolete or improper credentials set, such as a password or private key that is at risk.
- Insufficient authentication
: The customer may not be properly authenticated with the Ethereum network, requesting additional information such as public keys or tokens.
3
Insufficient Configuration : File jsonrpcclient.php may not have the necessary setting configured to handle connections with specific nodes in the blockchain.
Troubleshooting Actions:
To solve this problem and return and work, try the following:
- Update JSON-RPC credentials : Check that your account has accurate and updated information on Ethereum’s wallet.
- Check Node Configuration : Make sure you use the right Ethereum network (like Mainnet, TestNet) and configure all the necessary settings
jonrpcclient.php.
3
Check authentication methods : Try various authentication methods, such as using public key or tokens to see if it solves the problem.
- Check your PHP script
: Review your script to make sure you set the JSON-RPC connection correctly.
Example of use of use:
To further eliminate this problem, try to execute this fragment of code from your installation php-ethereum:
php
Requirements_once ‘Seller/Autoload.php’;
Use phethum \ jonrpcclient;
$ RPC = New jonrpcclient (‘http: // Localhost: 8332’);
`
This will try to connect to the Ethereum knot in memory. If the issue still exists, you may need to investigate further to identify and solve the root cause.
When performing these steps, you should be able to diagnose and solve 401 errors when using Php-Eethereum with your JSON-RPC customer.