Subscriber and Publisher Errors Related to Deprecated Support for Plan B

Maria Scieranska June 19, 2023 13:00

Symptom

Users neither can subscribe nor publish to a session. Inspector tool shows errors 1013 and 1500.

1013

Subscription Failure to User 1

Stream ID:	streamID
Reason:	NewPeerConnection
Message:	OT.Subscriber PeerConnection Error: Failed to create PeerConnection, exception: NotSupportedError: Failed to construct 'RTCPeerConnection': Plan B SDP semantics is a legacy version of the Session Description Protocol that has severe compatibility issues on modern browsers and is no longer supported. See https://www.chromestatus.com/feature/5823036655665152 for more details, including the possibility of registering for a Deprecation Trial in order to extend the Plan B deprecation deadline for a limited amount of time.

1500

Publisher failure

Reason:

NewPeerConnection

Message:

NewPeerConnection: Publisher PeerConnection with connection (not found) failed: Failed to create PeerConnection, exception: NotSupportedError: Failed to construct 'RTCPeerConnection': Plan B SDP semantics is a legacy version of the Session Description Protocol that has severe compatibility issues on modern browsers and is no longer supported. See https://www.chromestatus.com/feature/5823036655665152 for more details, including the possibility of registering for a Deprecation Trial in order to extend the Plan B deprecation deadline for a limited amount of time.

Applies To

Video API
Unified Plan
Chromium browsers

Resolution

Update your JS SDK version to the latest version or, if you are not using the latest one, update to one that implements an update (v2.18.5, v2.19.4, v2.20.1). The update in those SDK versions enforces the use of the Unified Plan on Chromium browsers and prevents them from logging a warning that Plan B is being removed; and for legacy browsers, OpenTok.js continues to use Plan B.

Cause

Chromium browser was not reinforced to use Unified Plan.

Additional Information

See Vonage Video API Support for Plan B and Unified Plan article for more information.

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