Limit tunnel IDs and names to 49 characters for DNS compliance#581
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plequere-ms merged 4 commits intomainfrom Mar 26, 2026
Merged
Limit tunnel IDs and names to 49 characters for DNS compliance#581plequere-ms merged 4 commits intomainfrom
plequere-ms merged 4 commits intomainfrom
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DNS specifications limit each label in a hostname to 63 characters. Tunnel URIs include the tunnel ID/name plus port and inspection suffixes: - Standard: https://<tunnel_id>-<port>.<region>.devtunnels.ms - Inspection: https://<tunnel_id>-<port>-inspect.<region>.devtunnels.ms To ensure tunnel URIs remain within the 63-character DNS label limit, tunnel IDs and names are now limited to 49 characters (63 - 6 for port - 8 for inspect).
jasongin
approved these changes
Mar 25, 2026
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DNS specifications limit each label in a hostname to 63 characters. Tunnel URIs include the tunnel ID/name plus port and inspection suffixes:
To ensure tunnel URIs remain within the 63-character DNS label limit, tunnel IDs and names are now limited to 49 characters (63 - 6 for port - 8 for inspect).
Fixes # https://github.com/github/dev-tunnels-planning/issues/1676
Other Tasks:
npm view @microsoft/dev-tunnels-contracts). This will fix issues where yarn will pull the old version of packages and will cause mismatched dependencies. See example PR