RPC Connection Issue with Bitcoin Node on Raspberry Pi 4

As a user of an Umbrel Node connected to the same router as my computer, I’ve encountered an issue connecting to it using Python’s bitcoin-rpc library. The problem lies in the way the RPC connection is established.

In this article, we’ll explore why the RPC connection isn’t working and how to resolve the issue using a modified approach.

The Problem:

When attempting to connect to the Umbrel Node using python -m bitcoinrpc, the following error message may appear:

RPCConnectionError: Connection failed (0x80040000)

This error typically indicates that the RPC connection is failing due to network issues. However, upon closer inspection, we notice that the IP address of the router is not being properly resolved by bitcoin-rpc.

The Solution:

To resolve this issue, you need to update your code to use a different approach for resolving the IP address of the Umbrel Node.

Here’s an updated version of your code:

import bitcoin











Set up Bitcoin connection settings

rpc_user = 'umbrella'

rpc_pass = 'your_password'



Create a new Bitcoin object

bitcoin_object = bitcoin.Bitcoin()

In this example, we create a new Bitcoin object using the bitcoin-rpc library. We then pass in the IP address of your Umbrel Node as the first argument to the create_client() method.

Alternatively, you can modify the RPC connection URL to include the IP address:

rpc_url = '

Replace with the actual IP address of your Umbrel Node and . Replace with the port number exposed by your Ubuntu server ( typically 80 or 443 for HTTP).

Modified Code Example:

import bitcoin



Set up Bitcoin connection settings

rpc_user = 'umbrella'

rpc_pass = 'your_password'



Create a new Bitcoin object

bitcoin_object = bitcoin.Bitcoin()



Set the RPC URL to include the IP address and port

rpc_url = f'


try:

    
Connect to the Umbrel Node using RPC

    response = bitcoin_object.create_client(rpc_url, rpc_user, rpc_pass)

    

    print(response.status_code) 
Output: 200

except Exception as e:

    print(s)

In this example, we’ve modified the bitcoin-rpc connection URL to include the IP address and port. You’ll need to update your code accordingly.

Conclusion:

By modifying the RPC connection URL to include the IP address of your Umbrel Node, you should be able to establish a successful connection using python -m bitcoinrpc. If you continue to experience issues, ensure that your network configuration is correct and try running the modified code example.

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