DNS_HOSTNAME_EMPTY

The DNS_HOSTNAME_EMPTY error occurs when an empty DNS record is received as part of the DNS response while attempting to connect to a private IP from an external rewrite.

502

DNS_HOSTNAME_EMPTY:

Bad Gateway

Troubleshoot

I'm encountering an error and reviewing the docs at /flg~eyJhbGciOiJIUzI1NiJ9._f7-_v0.H1pbXxc_pwT_uVOl9HPQTOSEJsJVY_sGnFnlG1GD0mM/docs/errors/DNS_HOSTNAME_EMPTY to understand what's happening. Please help me resolve this by: 1. **Suggest the fix**: Analyze my codebase context and propose what needs to be changed to resolve this error 2. **Explain the root cause**: Break down why this error occurred: - What was the code actually doing vs. what it needed to do? - What conditions triggered this specific error? - What misconception or oversight led to this? 3. **Teach the concept**: Help me understand the underlying principle: - Why does this error exist and what is it protecting me from? - What's the correct mental model for this concept? - How does this fit into the broader framework/language design? 4. **Show warning signs**: Help me recognize this pattern in the future: - What should I look out for that might cause this again? - Are there similar mistakes I might make in related scenarios? - What code smells or patterns indicate this issue? 5. **Discuss alternatives**: Explain if there are different valid approaches and their trade-offs My goal is to fix the immediate issue while building lasting understanding so I can avoid and resolve similar errors independently in the future.

To troubleshoot this error, follow these steps:

  1. Review DNS configuration: Check the DNS configuration to ensure that it's correctly set up and doesn't have any empty or incorrect entries
  2. Check for private IP addresses: Ensure that the request isn't attempting to connect to a private IP address from an external source
  3. Review application logs: Inspect the application logs for any warnings or errors related to DNS or the attempted connections

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