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package ice
// CandidateType represents the type of candidate
type CandidateType byte
// CandidateType enum
const (
CandidateTypeUnspecified CandidateType = iota
CandidateTypeHost
CandidateTypeServerReflexive
CandidateTypePeerReflexive
CandidateTypeRelay
)
// String makes CandidateType printable
func (c CandidateType) String() string {
switch c {
case CandidateTypeHost:
return "host"
case CandidateTypeServerReflexive:
return "srflx"
case CandidateTypePeerReflexive:
return "prflx"
case CandidateTypeRelay:
return "relay"
case CandidateTypeUnspecified:
return "Unknown candidate type"
}
return "Unknown candidate type"
}
// Preference returns the preference weight of a CandidateType
//
// 4.1.2.2. Guidelines for Choosing Type and Local Preferences
// The RECOMMENDED values are 126 for host candidates, 100
// for server reflexive candidates, 110 for peer reflexive candidates,
// and 0 for relayed candidates.
func (c CandidateType) Preference() uint16 {
switch c {
case CandidateTypeHost:
return 126
case CandidateTypePeerReflexive:
return 110
case CandidateTypeServerReflexive:
return 100
case CandidateTypeRelay, CandidateTypeUnspecified:
return 0
}
return 0
}
func containsCandidateType(candidateType CandidateType, candidateTypeList []CandidateType) bool {
if candidateTypeList == nil {
return false
}
for _, ct := range candidateTypeList {
if ct == candidateType {
return true
}
}
return false
}
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