package rule import ( "strings" "github.com/sagernet/sing-box/adapter" F "github.com/sagernet/sing/common/format" ) var _ RuleItem = (*ProtocolItem)(nil) type ProtocolItem struct { protocols []string protocolMap map[string]bool } func NewProtocolItem(protocols []string) *ProtocolItem { protocolMap := make(map[string]bool) for _, protocol := range protocols { protocolMap[protocol] = true } return &ProtocolItem{ protocols: protocols, protocolMap: protocolMap, } } func (r *ProtocolItem) Match(metadata *adapter.InboundContext) bool { return r.protocolMap[metadata.Protocol] } func (r *ProtocolItem) String() string { if len(r.protocols) == 1 { return F.ToString("protocol=", r.protocols[0]) } return F.ToString("protocol=[", strings.Join(r.protocols, " "), "]") }