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Summary

Fixed silent failure issue in heroku run:inside and improved error messages in heroku logs when executed outside trusted IP ranges. Added uniform error handling for 403 HTTP responses to provide clear error messages instead of silent failures or generic errors.

Type of Change

• fix: Bug fix or issue (patch semvar update)
• feat: Introduces a new feature to the codebase (minor semvar update)
• perf: Performance improvement
• docs: Documentation only changes
• tests: Adding missing tests or correcting existing tests
• chore: Code cleanup tasks, dependency updates, or other changes

Note: Add a ! after your change type to denote a breaking change.

Testing

yarn && yarn build

Follow guide for staging heroku environment here: staging setup.

get current webserver

heroku ps -a michael-test-fir-app

Confirm ip restrictions (should be empty):

./bin/run spaces:trusted-ips --space michael-test-fir-space
./bin/run spaces:trusted-ips:remove [range] --space michael-test-fir-space

Run commands against test space + app with IP restrictions enabled:

./bin/run run:inside <webserver> -a michael-test-fir-app ls
./bin/run logs -a michael-test-fir-app --tail

Both should return the same error: Error: You can't access this app from your IP address

Additional Context

• Root Cause:

  • The run:inside command failed silently when IP restrictions were active because the HTTPS request in the SSH connection path received a 403 response but had no handler for it, causing the Promise to hang indefinitely waiting for an upgrade event that never came.
  • The logs command displayed generic error messages for 403 responses because EventSource doesn't expose HTTP response bodies, making it impossible to distinguish between IP restrictions and stream expiration errors.

• Fix Applied:

  • dyno.ts: Added HTTP response handler in _connect() method to check for 403 status codes and reject the Promise with a user-friendly error message: "You can't access this space from your IP address. Contact your team admin."
  • log-displayer.ts: Implemented fetchHttpResponseBody() utility function that makes a separate HTTP request to fetch the actual response body (since EventSource doesn't expose it). The error handler now:
    • Fetches the 403 response body to extract the server's error message
    • Distinguishes between IP restriction errors and stream expiration errors by checking the response content
    • Uses the server's error message for IP restrictions (e.g., "You can't access this space from your IP address. Contact your team admin.")
    • Falls back to a consistent message for stream expiration: "Your access to the log stream expired. Try again."
    • Also improved the 404 error message to match the stream expiration message for consistency

• Implementation Details:

  • Used Node's https module directly (matching existing patterns in dyno.ts) to handle staging SSL certificates
  • Added 5-second timeout and proper cleanup to prevent hanging requests
  • Implemented promise state protection to prevent multiple resolve/reject calls

Both commands now provide clear, actionable error messages that match the server's response, maintaining a consistent user experience across commands.

Resolved usage:

Related Issue

Closes W-19883467