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package webrtc
import (
"encoding/json"
)
// ICETransportPolicy defines the ICE candidate policy surface the
// permitted candidates. Only these candidates are used for connectivity checks.
type ICETransportPolicy int
// ICEGatherPolicy is the ORTC equivalent of ICETransportPolicy
type ICEGatherPolicy = ICETransportPolicy
const (
// ICETransportPolicyAll indicates any type of candidate is used.
ICETransportPolicyAll ICETransportPolicy = iota
// ICETransportPolicyRelay indicates only media relay candidates such
// as candidates passing through a TURN server are used.
ICETransportPolicyRelay
)
// This is done this way because of a linter.
const (
iceTransportPolicyRelayStr = "relay"
iceTransportPolicyAllStr = "all"
)
// NewICETransportPolicy takes a string and converts it to ICETransportPolicy
func NewICETransportPolicy(raw string) ICETransportPolicy {
switch raw {
case iceTransportPolicyRelayStr:
return ICETransportPolicyRelay
case iceTransportPolicyAllStr:
return ICETransportPolicyAll
default:
return ICETransportPolicy(Unknown)
}
}
func (t ICETransportPolicy) String() string {
switch t {
case ICETransportPolicyRelay:
return iceTransportPolicyRelayStr
case ICETransportPolicyAll:
return iceTransportPolicyAllStr
default:
return ErrUnknownType.Error()
}
}
// UnmarshalJSON parses the JSON-encoded data and stores the result
func (t *ICETransportPolicy) UnmarshalJSON(b []byte) error {
var val string
if err := json.Unmarshal(b, &val); err != nil {
return err
}
*t = NewICETransportPolicy(val)
return nil
}
// MarshalJSON returns the JSON encoding
func (t ICETransportPolicy) MarshalJSON() ([]byte, error) {
return json.Marshal(t.String())
}
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