Enabling RPC Usage Debugging in Ethereum

As a developer working with Ethereum, it is very important to monitor RPC (Remote Procedure Call) usage logs to troubleshoot errors and network issues. This article will help you enable debug logging for RPC usage in your Bitcoin Core wallet.

Why is alignment necessary?

RPC usage logs provide valuable information about how your application interacts with the Ethereum network, including command names, callers, and parameters used. By analyzing these logs, you can identify potential errors, optimize performance, and improve the overall user experience.

Prerequisites

Before you enable debug logging for RPC usage:

• Make sure your Bitcoin Core wallet is up to date.

• Install the bitcoind-cli command-line interface (CLI) on your system.

Enable debug logging

To enable debug logging for RPC access, follow these steps:

Step 1: Create a new debug log configuration file

Create a new file named “.debug-eth-debug.json” in the root directory of your Bitcoin Core installation. This file will store the debug log configuration.

{
"rpc_access_logs": {
"format": "json",
"log_file": "/path/to/your/debug/logfile.json"
}
}

Replace “/path/to/your/debug/logfile.json” with the desired log file location. All RPC access logs will be stored in this JSON file.

Step 2: Create a new configuration script

Create a new file called “debug-eth-debug.sh” in the “.debug-eth-debug” directory (created in the previous step). This script will read the debug logging configuration and write it to the log file.

#!/bin/bash





Set the location of the log file
LOG_FILE="/path/to/your/debug/logfile.json"

Parse the JSON configuration
while IFS="," read the parameters of the -r command caller; do
echo "{
\"command\": \"$command\",
\"caller\": \"$caller\",
\"params\": [\"$params\"]
} >> $LOG_FILE
done < /dev/null
echo "$LOG_FILE" > debug.log

Save this script and make it executable by running “chmod +x debug-eth-debug.sh”. Then add this line to your shell configuration file (e.g. ~/.bashrc or ~/.zshrc) to run the script.

source ~/.debug-eth-debug.sh

Using debug logging

After you have enabled debug logging for RPC access:

• Open the debug log file by running the following command:

bitcoind -logformat jsonrpcdebug /path/to/your/debug/logfile.json

• Open a new terminal and run:

bitcoind --logdebug /path/to/your/debug/logfile.json

A debug log file will be displayed, showing all RPC access events with their parameters.

Tips and Options

• If you want to enable logging for specific commands or RPC interfaces (e.g. “eth” or “wss”), add the appropriate flags to the command line argument. For example:

bitcoind --logformat jsonrpcdebug --interface wss myapp eth '{"method": "getbalance", "params": []}'

• You can exclude specific logs by using the “–exclude” flag followed by a list of log names or paths. For example:

bitcoind --logformat jsonrpcdebug --interface wss myapp --exclude debug rpcaccess

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