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5# This file incorporates work covered by the following copyright and
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8# Copyright (c) Jeremy Lainé.
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33
34from dataclasses import dataclass
35
36
37@dataclass
38class RTCSessionDescription:
39 """
40 The :class:`RTCSessionDescription` dictionary describes one end of a
41 connection and how it's configured.
42 """
43
44 sdp: str
45 type: str
46
47 def __post_init__(self) -> None:
48 if self.type not in {"offer", "pranswer", "answer", "rollback"}:
49 raise ValueError(
50 "'type' must be in ['offer', 'pranswer', 'answer', 'rollback'] "
51 f"(got '{self.type}')"
52 )