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# PreflightResult

> Results of a preflight connectivity test.

Results of a preflight connectivity test.

## **Properties**

**`bandwidth`** `{ downloadKbps: number; uploadKbps: number; } | null`

Bandwidth estimation (null if skipMediaTest).

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**`connectivity`** `object` — required

ICE/TURN connectivity.

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**`connectivity.rttMs`** `number` — required

RTT to media server in ms.

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**`connectivity.stunReachable`** `boolean` — required

Whether STUN servers are reachable.

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**`connectivity.turnReachable`** `boolean` — required

Whether TURN servers are reachable.

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**`connectivity.type`** `"failed" | "direct" | "relay"` — required

'direct' = host/srflx worked, 'relay' = only TURN relay, 'failed' = nothing.

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**`devices`** `object` — required

Device test results.

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**`devices.audioInput`** `object` — required

Audio input portion of the preflight result.

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**`devices.audioInput.device`** `MediaDeviceInfo | null`

Audio input device used for the test, or `null` if none was available. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

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**`devices.audioInput.working`** `boolean` — required

Whether the audio input device produced a usable signal.

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**`devices.audioOutput`** `object` — required

Audio output portion of the preflight result.

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**`devices.audioOutput.available`** `boolean` — required

Whether an audio output device was available for the test.

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**`devices.audioOutput.device`** `MediaDeviceInfo | null`

Audio output device used for the test, or `null` if none was available. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

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**`devices.videoInput`** `object` — required

Video input portion of the preflight result.

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**`devices.videoInput.device`** `MediaDeviceInfo | null`

Video input device used for the test, or `null` if none was available. See [`MediaDeviceInfo`](https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo).

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**`devices.videoInput.working`** `boolean` — required

Whether the video input device produced a usable signal.

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**`ok`** `boolean` — required

Overall pass/fail.

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**`signaling`** `object` — required

Signaling server reachability.

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**`signaling.reachable`** `boolean` — required

Whether the signaling endpoint was reachable.

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**`signaling.rttMs`** `number` — required

Measured signaling round-trip time in milliseconds.

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**`warnings`** `readonly string[]` — required

Human-readable warnings.

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> Results of a preflight connectivity test.