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Ethereum: JSON -RPC -Call Failed to -Varite Guide
As a Blockchain Ethereum developer, you are probably not a foreign complexity related to building and maintaining a solid and safe network. However, even the most experienced developers can face problems in integrating external services.
Recently, I have met a problem where my Ethereum app had problems with the JSON-RPC call. In particular, the JSON_RPC_CALLI method could not be performed as expected. In this article, I will guide you through the steps I have made to diagnose and solve the problem.
problem
To start, it is said what is the JSON-RPC invitation. The JSON-RPC call (JavaScript analysis) is a common way that developers can interact with the Blockchain network, such as Ethereum, with Javascript applications. TheJSON_RPC_CALL’S method allows you to send a JSON object to the network and perform a specific event or function.
In my case, I use the popular PHP library [php-ethherscript] ( interact with Ethereum. In particular, I call the ‘et_call’ method of the ‘Ethereumcontract’ class, pass JSON as an argument.
Error
When you try to run JSON_RPC_CALL I have met an error message that shows a bug:
`
Error: JSON_RPC_CALL Failed
`
At this point, it seemed a direct problem with my code or network with Ethereum. However, I knew I was already configured properly in the Blockchain and JSON-RPC terminal.
troubleshooting stages
I followed the following steps to solve the problem:
1.
2 I have examined this document to make sure I use the right syntax and parameters.
- Check error message : After examination of the error message, I have noticed that it mentioned «failed» instead of showing a certain cause of the problem. This made me explore and explore alternative solutions.
- Try tuning the php library : i used [php-herscript debugger] ( to check and Go through my code. I was able to recognize the potential problem by using the calling of the call by the
et_callmethod.
Resolution
After taking these measures to solve problems, I noticed that the problem caused the wrong parameter that was transferred to the «et_call» method. In particular, I handed over the wrong object as an argument for JSON when it was really expected in a different form.
To solve this problem, I updated my code to skip the JSON object correctly, leading to a successful performance of «JSON_RPC_CALL».
conclusion
In summary, an appointment with JSON-RPC call at Blockchaine Ethereum can be frustrating. If you follow these problem solutions and carefully check your settings, you can solve the problems and continue to build strong and safe applications.
I hope this article was useful for solving the problem or providing information from the links coming. If you have any other questions or concerns, don’t hesitate to ask!