Ethereum: Binance – msg: ‘Signature for this request is not valid.’

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Explaining the Error Message and Solution for Binance API Request in NodeJS

As a developer, you are probably encountering an error when trying to send an HTTP request to Binance API using your preferred programming language. In this article, we will discuss the error message “The signature of this request is invalid” and provide a step-by-step guide on how to resolve it.

Explaining the Error Message

The error message indicates that the request being sent to Binance API does not contain a valid signature. When sending an HTTP request using NodeJS axios library, you must include signature in the request headers to authenticate and authorize access to the API.

In this case, the error is likely due to one of two reasons:

• Missing or invalid Signature header: The request does not contain a valid signature, which means that axios library is unable to verify the authenticity of the request.

• Invalid X-MBX-APIKEY header: This header is required for API requests made via Binance WebSockets API. If this header is missing or incorrectly formatted, it can also prevent successful authentication.

Solution Steps

To resolve the error, follow these steps:

Option 1: Ensure that the Signature header is valid

Make sure that the request contains a valid signature in the HTTP headers. The format of Binance WebSockets API requests typically includes the X-MBX-APIKEY header with the API key as the value.

Example (NodeJS)

const axios = require('axios');
// Set up your Binance API credentials and WebSocket URL
const apiKey = 'YOUR_API_KEY';
const apiSecret = 'YOUR_API_SECRET';
const wsUrl = 'wss://api.binance.com:9443/websocket';
// Set the signature in the X-MBX-APIKEY header
const headers = {
'X-MBX-APIKEY': apiKey,
};
// Configure the WebSocket object with your credentials and WebSocket URL
axios.post(wsUrl, data, { headers })
.then(response => console.log('Successful request'))
.catch(error => console.error('Error:', error));

Option 2: Check the X-MBX-APIKEY header

If you still have problems after checking for the correct Signature header, check if the X-MBX-APIKEY header is present in your request. You can do this by checking the Network tab in your browser’s developer tools or by using the built-in debugging features of the axios library.

Example (NodeJS)

const axios = require('axios');
// Configure your Binance API credentials and WebSocket URL
const apiKey = 'YOUR_API_KEY';
const apiSecret = 'YOUR_API_SECRET';
// Configure the request with the X-MBX-APIKEY header
const headers = {
'X-MBX-APIKEY': apiKey,
};
// Use axios to send a POST request to the Binance API
axios.post('wss://api.binance.com:9443/websocket', data, { headers })
.then(response => console.log('Successful request'))
.catch(error => console.error('Error:', error));

By following these steps, you should be able to resolve the The signature for this request is invalid error and successfully interact with the Binance API using your preferred programming language.