fix(dev): bind to all interfaces for Docker#183
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On macOS, Docker containers reach the host via host.docker.internal which maps to 192.168.65.254, not loopback. Default bindAddr of ['authn.localhost'] only listens on 127.0.0.1, causing connection refused from cloudflared's mediator-tunnel container. Note: 0.0.0.0 also exposes the mediator on all LAN interfaces. Acceptable for local dev; avoid on shared/corporate networks.
djscruggs
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Jun 25, 2026
dlongley
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Jun 25, 2026
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This needs a changelog entry and needs to be checked against deployment configs to ensure that those don't need any changes as a result of it.
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Summary
configs/dev.jsdefaultbindAddris['authn.localhost']which resolves to127.0.0.1(loopback only)host.docker.internal→192.168.65.254, not loopbackcloudflared'smediator-tunnelcontainer inchapi-demo-stackto get connection refusedbindAddr = ['0.0.0.0']makes the mediator reachable from DockerNote:
0.0.0.0also exposes the mediator on all LAN interfaces — acceptable for local dev, but worth being aware of on shared/corporate networks.Test plan
node authn.localhost.jsand confirmHTTPS listening on authn.localhost:33443docker compose up -dinchapi-demo-stackand confirm mediator-tunnel connects without Error 1033🤖 Generated with Claude Code