A publisher sends a SUBSCRIBE_ERROR control message in response to a failed SUBSCRIBE.
SUBSCRIBE_ERROR Message {
Type (i) = 0x5,
Length (16),
Request ID (i),
Error Code (i),
Error Reason (Reason Phrase),
}
-
Request ID: The Request ID of the SUBSCRIBE this message is replying to Section 9.7.
-
Error Code: Identifies an integer error code for subscription failure.
-
Error Reason: Provides the reason for subscription error. See Section 1.4.3.
The application SHOULD use a relevant error code in SUBSCRIBE_ERROR, as defined below:
- INTERNAL_ERROR (0x0):
-
An implementation specific or generic error occurred.
- UNAUTHORIZED (0x1):
-
The subscriber is not authorized to subscribe to the given track.
- TIMEOUT (0x2):
-
The subscription could not be completed before an implementation specific timeout. For example, a relay could not establish an upstream subscription within the timeout.
- NOT_SUPPORTED (0x3):
-
The endpoint does not support the SUBSCRIBE method.
- TRACK_DOES_NOT_EXIST (0x4):
-
The requested track is not available at the publisher.
- INVALID_RANGE (0x5):
-
The end of the SUBSCRIBE range is earlier than the beginning, or the end of the range has already been published.
- MALFORMED_AUTH_TOKEN (0x10):
-
Invalid Auth Token serialization during registration (see Section 9.2.1.1).
- EXPIRED_AUTH_TOKEN (0x12):
-
Authorization token has expired (Section 9.2.1.1).