Ethereum Middleware error on Binance Provider

When using the Ethereum blockchain via Middleware library like Web3.js, it is not unusual to counter errors such as “Extradatalgangerror”. In this article we will examine why this error occurs and give an example of how it can be resolved.

The problem: ExtradatalGrherror

The “ExtradatalGerror” occurs when the Ethereum Middleware tries to process an extra large amount of data that exceeds the available buffer room. This can happen if:

• The “Data” field in a transaction or an event contains too much information, so it exceeds the maximum permissible length.

• The “Extradata” property is set to a value that is included in excessive data.

The Binance provider

The problem arises in the context of Binance, an Ethereum-based exchange, when the library “Httpprovider” with Web3.js. The following happens:

• The Middleware library tries to deserialize incoming data from Binance from Binance.

• It tries to access the processed transaction or the event and extract relevant information.

However, if the data exceeds the available buffer room in the buffers of the Middleware library, it triggers an “extradatal lord”.

The Middleware code

Here is a simplified example of what the Middleware code could look like:

`Python

In this example, the “Getmiddleware ()function is responsible for the initialization of the Web3 instance and a connection to Binance. The Middleware library itself is not displayed.

The error

If a test suite tries to process an event with more data than in the buffers, an “extra -nature mister” is triggered. Due to the lack of information about the exact cause, this error may be difficult to diagnose.

To illustrate this, we look at an example:

Suppose we have a transaction that contains 100 bytes additional data. If only 128-byte buffers are available in your cache in our Middleware library, attempts are made to demonstrate the entire transaction into the memory. Unfortunately web3.js is not designed in such a way that they treat such large amounts of data, and it is likely to be crashed.

Resolution

In order to fix this problem, we have to make sure that our Middleware library can process larger amounts of data without flinging your buffers. Here are some possible solutions:

• Increase the buffer size : We could change the Middleware library to assign more storage for large transactions or events.

• Implement additional validation and filtering : Before you try to demonstrate data, we would like to validate you against expected formats and filters to prevent overflow.

• Use a streaming-based approach : Instead of immediately loading the entire transaction into the memory, we can use a streaming library such as “stream” (available on node.js) or “async – Stream(available on Python).

` Python

Import Web3

Httpprovider = ‘

Great Binancemiddleware:

Def __init __ (Self, W3):

self.w3 = w3

self.buffer_size = 128

DEF Getmiddleware (self):

return web3.web3 (web3.web3.httpprovider (httpprovider))

Async DEF Handle_request (self, request):

transaction = waiting self.w3.eth.

Extra_data = Request.data.get (‘Extradata’, [])

If len (extra_data)> self.buffer_size:

Increase value (“additional data exceed the buffer size”)

Process the transaction with additional data

Result = waiting self.w3.eth.