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WebRTC Metrics

A comprehensive overview of WebRTC statistics, derived indicators, and observable signals, to better understand call quality, connectivity, and user experience in rtcStats

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connectivitybug

TURN Client Error

The connection has been rejected by the TURN server due to a client error (4xx).

Description

This indicates that a TURN server returned a client error response.

Usually, these will be 403 (Forbidden), 440 (Address Family not Supported) or 442 (Unsupported Transport Address).

Here is what to do in each of these cases:

  • 403 Forbidden - usually, the IP address of the client was rejected on the TURN server due to a policy
  • 440 Address Family not Supported - when the TURN server doesn’t support IPv4 or IPv6 and asked to provide such an address type

What do we do here?

When we see a 4xx error on TURN (other than 401) we mark it as an Observation.