Exploring the "getaddrinfo failed" Error

The error "getaddrinfo failed" occurs during the process of name resolution, where the hostname is translated into an IP address. It suggests an issue with the resolution of the provided hostname.

Delving into the Error Context

From the provided error trace, we can trace the cause to the socket.getaddrinfo(host, port) method. This method fails when it cannot resolve the provided hostname to an IP address. The error message, "getaddrinfo failed," indicates that the name resolution process has failed.

Potential Causes of the Issue

Common reasons for "getaddrinfo failed" include:

• Invalid hostnames: The provided hostname may be misspelled or does not exist.
• Domain Name System (DNS) issues: DNS servers may be unavailable or not configured properly, leading to failed hostname resolution.
• Firewall restrictions: Network firewalls may block the name resolution process.

Resolving the Problem

To resolve this issue, consider the following steps:

• Confirm the hostname: Ensure that the provided hostname is correct and exists.
• Verify DNS settings: Confirm that DNS servers are properly configured and accessible.
• Disable firewalls: If present, disable network firewalls temporarily to see if they are causing the issue.
• Use an IP address: If hostname resolution fails, you can try providing the IP address of the host directly. Use the following code:

import socket
socket.getaddrinfo('127.0.0.1', 8080)