The ROUTER_EXTERNAL_TARGET_HANDSHAKE_ERROR error occurs when a connection cannot be successfully established with an external target. This error may result from issues during the SSL handshake process or due to a timeout, and is often attributed to one of the following causes:
- SSL handshake failure: The SSL handshake may fail if the target has an invalid certificate or uses an unsupported Cipher Suite
- Timeout: The error could also be due to a timeout, which might be caused by issues connecting to the target. Note that proxied requests to external targets have a maximum timeout of 120 seconds (2 minutes).
ROUTER_EXTERNAL_TARGET_HANDSHAKE_ERROR:
Unable to establish connection with external target
I'm encountering an error and reviewing the docs at /flg~eyJhbGciOiJIUzI1NiJ9._v3-_v79.lrROxMiRi9tMij86Gwvuj8ohUUNFPETC93JfIydRlJ8/docs/errors/ROUTER_EXTERNAL_TARGET_HANDSHAKE_ERROR 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:
- Check SSL configuration: Ensure that the target's SSL certificate is valid and that it is not using an unsupported Cipher Suite
- Investigate connectivity issues: Look into potential connectivity problems between your application and the external target
- Monitor response times: Check if your application or the external target is experiencing unusual delays that might be contributing to the timeout
