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server/vendor/github.com/pion/webrtc/v3/icerole.go

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+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package webrtc
+
+// ICERole describes the role ice.Agent is playing in selecting the
+// preferred the candidate pair.
+type ICERole int
+
+const (
+	// ICERoleControlling indicates that the ICE agent that is responsible
+	// for selecting the final choice of candidate pairs and signaling them
+	// through STUN and an updated offer, if needed. In any session, one agent
+	// is always controlling. The other is the controlled agent.
+	ICERoleControlling ICERole = iota + 1
+
+	// ICERoleControlled indicates that an ICE agent that waits for the
+	// controlling agent to select the final choice of candidate pairs.
+	ICERoleControlled
+)
+
+// This is done this way because of a linter.
+const (
+	iceRoleControllingStr = "controlling"
+	iceRoleControlledStr  = "controlled"
+)
+
+func newICERole(raw string) ICERole {
+	switch raw {
+	case iceRoleControllingStr:
+		return ICERoleControlling
+	case iceRoleControlledStr:
+		return ICERoleControlled
+	default:
+		return ICERole(Unknown)
+	}
+}
+
+func (t ICERole) String() string {
+	switch t {
+	case ICERoleControlling:
+		return iceRoleControllingStr
+	case ICERoleControlled:
+		return iceRoleControlledStr
+	default:
+		return ErrUnknownType.Error()
+	}
+}
+
+// MarshalText implements encoding.TextMarshaler
+func (t ICERole) MarshalText() ([]byte, error) {
+	return []byte(t.String()), nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler
+func (t *ICERole) UnmarshalText(b []byte) error {
+	*t = newICERole(string(b))
+	return nil
+}