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kevinveenbirkenbachandClaude Opus 5.5
1352de5422
The aio-talk image runs Janus with its stock janus.jcfg: no rtp_port_range and no nat_1_1_mapping, so Janus offered only its bridge address and every stream of a call went through coturn as relay. Calls above about six participants stuttered and failed. When talk runs bridged next to standalone coturn in compose mode on a host that owns networks.internet.ip4, a rendered janus.jcfg is mounted over the stock one with rtp_port_range 61000-61999, nat_1_1_mapping = ip4 and keep_private_host, and that UDP range is published on ip4. TURN stays the fallback. Before rendering, the deploy reads the image's launcher and stock janus.jcfg and stops when Janus no longer reads the mounted path or the stock settings drifted from the template. Variant 0 publishes 64 ports so dev and CI exercise the path; the call capacity spec asserts a non-relay selected pair on ip4 in that range. With the flag off every rendered file is byte-identical to before. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>