370 lines
12 KiB
Go
370 lines
12 KiB
Go
|
//go:build !js
|
||
|
|
// +build !js
|
||
|
|
|
||
|
|
package webrtc
|
||
|
|
|
||
|
|
import (
|
||
|
|
"sync"
|
||
|
|
"sync/atomic"
|
||
|
|
|
||
|
|
"github.com/pion/ice/v2"
|
||
|
|
"github.com/pion/logging"
|
||
|
|
)
|
||
|
|
|
||
|
|
// ICEGatherer gathers local host, server reflexive and relay
|
||
|
|
// candidates, as well as enabling the retrieval of local Interactive
|
||
|
|
// Connectivity Establishment (ICE) parameters which can be
|
||
|
|
// exchanged in signaling.
|
||
|
|
type ICEGatherer struct {
|
||
|
|
lock sync.RWMutex
|
||
|
|
log logging.LeveledLogger
|
||
|
|
state ICEGathererState
|
||
|
|
|
||
|
|
validatedServers []*ice.URL
|
||
|
|
gatherPolicy ICETransportPolicy
|
||
|
|
|
||
|
|
agent *ice.Agent
|
||
|
|
|
||
|
|
onLocalCandidateHandler atomic.Value // func(candidate *ICECandidate)
|
||
|
|
onStateChangeHandler atomic.Value // func(state ICEGathererState)
|
||
|
|
|
||
|
|
// Used for GatheringCompletePromise
|
||
|
|
onGatheringCompleteHandler atomic.Value // func()
|
||
|
|
|
||
|
|
api *API
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewICEGatherer creates a new NewICEGatherer.
|
||
|
|
// This constructor is part of the ORTC API. It is not
|
||
|
|
// meant to be used together with the basic WebRTC API.
|
||
|
|
func (api *API) NewICEGatherer(opts ICEGatherOptions) (*ICEGatherer, error) {
|
||
|
|
var validatedServers []*ice.URL
|
||
|
|
if len(opts.ICEServers) > 0 {
|
||
|
|
for _, server := range opts.ICEServers {
|
||
|
|
url, err := server.urls()
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
validatedServers = append(validatedServers, url...)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return &ICEGatherer{
|
||
|
|
state: ICEGathererStateNew,
|
||
|
|
gatherPolicy: opts.ICEGatherPolicy,
|
||
|
|
validatedServers: validatedServers,
|
||
|
|
api: api,
|
||
|
|
log: api.settingEngine.LoggerFactory.NewLogger("ice"),
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (g *ICEGatherer) createAgent() error {
|
||
|
|
g.lock.Lock()
|
||
|
|
defer g.lock.Unlock()
|
||
|
|
|
||
|
|
if g.agent != nil || g.State() != ICEGathererStateNew {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
candidateTypes := []ice.CandidateType{}
|
||
|
|
if g.api.settingEngine.candidates.ICELite {
|
||
|
|
candidateTypes = append(candidateTypes, ice.CandidateTypeHost)
|
||
|
|
} else if g.gatherPolicy == ICETransportPolicyRelay {
|
||
|
|
candidateTypes = append(candidateTypes, ice.CandidateTypeRelay)
|
||
|
|
}
|
||
|
|
|
||
|
|
var nat1To1CandiTyp ice.CandidateType
|
||
|
|
switch g.api.settingEngine.candidates.NAT1To1IPCandidateType {
|
||
|
|
case ICECandidateTypeHost:
|
||
|
|
nat1To1CandiTyp = ice.CandidateTypeHost
|
||
|
|
case ICECandidateTypeSrflx:
|
||
|
|
nat1To1CandiTyp = ice.CandidateTypeServerReflexive
|
||
|
|
default:
|
||
|
|
nat1To1CandiTyp = ice.CandidateTypeUnspecified
|
||
|
|
}
|
||
|
|
|
||
|
|
mDNSMode := g.api.settingEngine.candidates.MulticastDNSMode
|
||
|
|
if mDNSMode != ice.MulticastDNSModeDisabled && mDNSMode != ice.MulticastDNSModeQueryAndGather {
|
||
|
|
// If enum is in state we don't recognized default to MulticastDNSModeQueryOnly
|
||
|
|
mDNSMode = ice.MulticastDNSModeQueryOnly
|
||
|
|
}
|
||
|
|
|
||
|
|
config := &ice.AgentConfig{
|
||
|
|
Lite: g.api.settingEngine.candidates.ICELite,
|
||
|
|
Urls: g.validatedServers,
|
||
|
|
PortMin: g.api.settingEngine.ephemeralUDP.PortMin,
|
||
|
|
PortMax: g.api.settingEngine.ephemeralUDP.PortMax,
|
||
|
|
DisconnectedTimeout: g.api.settingEngine.timeout.ICEDisconnectedTimeout,
|
||
|
|
FailedTimeout: g.api.settingEngine.timeout.ICEFailedTimeout,
|
||
|
|
KeepaliveInterval: g.api.settingEngine.timeout.ICEKeepaliveInterval,
|
||
|
|
LoggerFactory: g.api.settingEngine.LoggerFactory,
|
||
|
|
CandidateTypes: candidateTypes,
|
||
|
|
HostAcceptanceMinWait: g.api.settingEngine.timeout.ICEHostAcceptanceMinWait,
|
||
|
|
SrflxAcceptanceMinWait: g.api.settingEngine.timeout.ICESrflxAcceptanceMinWait,
|
||
|
|
PrflxAcceptanceMinWait: g.api.settingEngine.timeout.ICEPrflxAcceptanceMinWait,
|
||
|
|
RelayAcceptanceMinWait: g.api.settingEngine.timeout.ICERelayAcceptanceMinWait,
|
||
|
|
InterfaceFilter: g.api.settingEngine.candidates.InterfaceFilter,
|
||
|
|
NAT1To1IPs: g.api.settingEngine.candidates.NAT1To1IPs,
|
||
|
|
NAT1To1IPCandidateType: nat1To1CandiTyp,
|
||
|
|
Net: g.api.settingEngine.vnet,
|
||
|
|
MulticastDNSMode: mDNSMode,
|
||
|
|
MulticastDNSHostName: g.api.settingEngine.candidates.MulticastDNSHostName,
|
||
|
|
LocalUfrag: g.api.settingEngine.candidates.UsernameFragment,
|
||
|
|
LocalPwd: g.api.settingEngine.candidates.Password,
|
||
|
|
TCPMux: g.api.settingEngine.iceTCPMux,
|
||
|
|
UDPMux: g.api.settingEngine.iceUDPMux,
|
||
|
|
ProxyDialer: g.api.settingEngine.iceProxyDialer,
|
||
|
|
}
|
||
|
|
|
||
|
|
requestedNetworkTypes := g.api.settingEngine.candidates.ICENetworkTypes
|
||
|
|
if len(requestedNetworkTypes) == 0 {
|
||
|
|
requestedNetworkTypes = supportedNetworkTypes()
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, typ := range requestedNetworkTypes {
|
||
|
|
config.NetworkTypes = append(config.NetworkTypes, ice.NetworkType(typ))
|
||
|
|
}
|
||
|
|
|
||
|
|
agent, err := ice.NewAgent(config)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
g.agent = agent
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Gather ICE candidates.
|
||
|
|
func (g *ICEGatherer) Gather() error {
|
||
|
|
if err := g.createAgent(); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
g.lock.Lock()
|
||
|
|
agent := g.agent
|
||
|
|
g.lock.Unlock()
|
||
|
|
|
||
|
|
g.setState(ICEGathererStateGathering)
|
||
|
|
if err := agent.OnCandidate(func(candidate ice.Candidate) {
|
||
|
|
onLocalCandidateHandler := func(*ICECandidate) {}
|
||
|
|
if handler, ok := g.onLocalCandidateHandler.Load().(func(candidate *ICECandidate)); ok && handler != nil {
|
||
|
|
onLocalCandidateHandler = handler
|
||
|
|
}
|
||
|
|
|
||
|
|
onGatheringCompleteHandler := func() {}
|
||
|
|
if handler, ok := g.onGatheringCompleteHandler.Load().(func()); ok && handler != nil {
|
||
|
|
onGatheringCompleteHandler = handler
|
||
|
|
}
|
||
|
|
|
||
|
|
if candidate != nil {
|
||
|
|
c, err := newICECandidateFromICE(candidate)
|
||
|
|
if err != nil {
|
||
|
|
g.log.Warnf("Failed to convert ice.Candidate: %s", err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
onLocalCandidateHandler(&c)
|
||
|
|
} else {
|
||
|
|
g.setState(ICEGathererStateComplete)
|
||
|
|
|
||
|
|
onGatheringCompleteHandler()
|
||
|
|
onLocalCandidateHandler(nil)
|
||
|
|
}
|
||
|
|
}); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
return agent.GatherCandidates()
|
||
|
|
}
|
||
|
|
|
||
|
|
// Close prunes all local candidates, and closes the ports.
|
||
|
|
func (g *ICEGatherer) Close() error {
|
||
|
|
g.lock.Lock()
|
||
|
|
defer g.lock.Unlock()
|
||
|
|
|
||
|
|
if g.agent == nil {
|
||
|
|
return nil
|
||
|
|
} else if err := g.agent.Close(); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
g.agent = nil
|
||
|
|
g.setState(ICEGathererStateClosed)
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetLocalParameters returns the ICE parameters of the ICEGatherer.
|
||
|
|
func (g *ICEGatherer) GetLocalParameters() (ICEParameters, error) {
|
||
|
|
if err := g.createAgent(); err != nil {
|
||
|
|
return ICEParameters{}, err
|
||
|
|
}
|
||
|
|
|
||
|
|
frag, pwd, err := g.agent.GetLocalUserCredentials()
|
||
|
|
if err != nil {
|
||
|
|
return ICEParameters{}, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return ICEParameters{
|
||
|
|
UsernameFragment: frag,
|
||
|
|
Password: pwd,
|
||
|
|
ICELite: false,
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetLocalCandidates returns the sequence of valid local candidates associated with the ICEGatherer.
|
||
|
|
func (g *ICEGatherer) GetLocalCandidates() ([]ICECandidate, error) {
|
||
|
|
if err := g.createAgent(); err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
iceCandidates, err := g.agent.GetLocalCandidates()
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return newICECandidatesFromICE(iceCandidates)
|
||
|
|
}
|
||
|
|
|
||
|
|
// OnLocalCandidate sets an event handler which fires when a new local ICE candidate is available
|
||
|
|
// Take note that the handler is gonna be called with a nil pointer when gathering is finished.
|
||
|
|
func (g *ICEGatherer) OnLocalCandidate(f func(*ICECandidate)) {
|
||
|
|
g.onLocalCandidateHandler.Store(f)
|
||
|
|
}
|
||
|
|
|
||
|
|
// OnStateChange fires any time the ICEGatherer changes
|
||
|
|
func (g *ICEGatherer) OnStateChange(f func(ICEGathererState)) {
|
||
|
|
g.onStateChangeHandler.Store(f)
|
||
|
|
}
|
||
|
|
|
||
|
|
// State indicates the current state of the ICE gatherer.
|
||
|
|
func (g *ICEGatherer) State() ICEGathererState {
|
||
|
|
return atomicLoadICEGathererState(&g.state)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (g *ICEGatherer) setState(s ICEGathererState) {
|
||
|
|
atomicStoreICEGathererState(&g.state, s)
|
||
|
|
|
||
|
|
if handler, ok := g.onStateChangeHandler.Load().(func(state ICEGathererState)); ok && handler != nil {
|
||
|
|
handler(s)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (g *ICEGatherer) getAgent() *ice.Agent {
|
||
|
|
g.lock.RLock()
|
||
|
|
defer g.lock.RUnlock()
|
||
|
|
return g.agent
|
||
|
|
}
|
||
|
|
|
||
|
|
func (g *ICEGatherer) collectStats(collector *statsReportCollector) {
|
||
|
|
agent := g.getAgent()
|
||
|
|
if agent == nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
collector.Collecting()
|
||
|
|
go func(collector *statsReportCollector, agent *ice.Agent) {
|
||
|
|
for _, candidatePairStats := range agent.GetCandidatePairsStats() {
|
||
|
|
collector.Collecting()
|
||
|
|
|
||
|
|
state, err := toStatsICECandidatePairState(candidatePairStats.State)
|
||
|
|
if err != nil {
|
||
|
|
g.log.Error(err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
pairID := newICECandidatePairStatsID(candidatePairStats.LocalCandidateID,
|
||
|
|
candidatePairStats.RemoteCandidateID)
|
||
|
|
|
||
|
|
stats := ICECandidatePairStats{
|
||
|
|
Timestamp: statsTimestampFrom(candidatePairStats.Timestamp),
|
||
|
|
Type: StatsTypeCandidatePair,
|
||
|
|
ID: pairID,
|
||
|
|
// TransportID:
|
||
|
|
LocalCandidateID: candidatePairStats.LocalCandidateID,
|
||
|
|
RemoteCandidateID: candidatePairStats.RemoteCandidateID,
|
||
|
|
State: state,
|
||
|
|
Nominated: candidatePairStats.Nominated,
|
||
|
|
PacketsSent: candidatePairStats.PacketsSent,
|
||
|
|
PacketsReceived: candidatePairStats.PacketsReceived,
|
||
|
|
BytesSent: candidatePairStats.BytesSent,
|
||
|
|
BytesReceived: candidatePairStats.BytesReceived,
|
||
|
|
LastPacketSentTimestamp: statsTimestampFrom(candidatePairStats.LastPacketSentTimestamp),
|
||
|
|
LastPacketReceivedTimestamp: statsTimestampFrom(candidatePairStats.LastPacketReceivedTimestamp),
|
||
|
|
FirstRequestTimestamp: statsTimestampFrom(candidatePairStats.FirstRequestTimestamp),
|
||
|
|
LastRequestTimestamp: statsTimestampFrom(candidatePairStats.LastRequestTimestamp),
|
||
|
|
LastResponseTimestamp: statsTimestampFrom(candidatePairStats.LastResponseTimestamp),
|
||
|
|
TotalRoundTripTime: candidatePairStats.TotalRoundTripTime,
|
||
|
|
CurrentRoundTripTime: candidatePairStats.CurrentRoundTripTime,
|
||
|
|
AvailableOutgoingBitrate: candidatePairStats.AvailableOutgoingBitrate,
|
||
|
|
AvailableIncomingBitrate: candidatePairStats.AvailableIncomingBitrate,
|
||
|
|
CircuitBreakerTriggerCount: candidatePairStats.CircuitBreakerTriggerCount,
|
||
|
|
RequestsReceived: candidatePairStats.RequestsReceived,
|
||
|
|
RequestsSent: candidatePairStats.RequestsSent,
|
||
|
|
ResponsesReceived: candidatePairStats.ResponsesReceived,
|
||
|
|
ResponsesSent: candidatePairStats.ResponsesSent,
|
||
|
|
RetransmissionsReceived: candidatePairStats.RetransmissionsReceived,
|
||
|
|
RetransmissionsSent: candidatePairStats.RetransmissionsSent,
|
||
|
|
ConsentRequestsSent: candidatePairStats.ConsentRequestsSent,
|
||
|
|
ConsentExpiredTimestamp: statsTimestampFrom(candidatePairStats.ConsentExpiredTimestamp),
|
||
|
|
}
|
||
|
|
collector.Collect(stats.ID, stats)
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, candidateStats := range agent.GetLocalCandidatesStats() {
|
||
|
|
collector.Collecting()
|
||
|
|
|
||
|
|
networkType, err := getNetworkType(candidateStats.NetworkType)
|
||
|
|
if err != nil {
|
||
|
|
g.log.Error(err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
candidateType, err := getCandidateType(candidateStats.CandidateType)
|
||
|
|
if err != nil {
|
||
|
|
g.log.Error(err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
stats := ICECandidateStats{
|
||
|
|
Timestamp: statsTimestampFrom(candidateStats.Timestamp),
|
||
|
|
ID: candidateStats.ID,
|
||
|
|
Type: StatsTypeLocalCandidate,
|
||
|
|
NetworkType: networkType,
|
||
|
|
IP: candidateStats.IP,
|
||
|
|
Port: int32(candidateStats.Port),
|
||
|
|
Protocol: networkType.Protocol(),
|
||
|
|
CandidateType: candidateType,
|
||
|
|
Priority: int32(candidateStats.Priority),
|
||
|
|
URL: candidateStats.URL,
|
||
|
|
RelayProtocol: candidateStats.RelayProtocol,
|
||
|
|
Deleted: candidateStats.Deleted,
|
||
|
|
}
|
||
|
|
collector.Collect(stats.ID, stats)
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, candidateStats := range agent.GetRemoteCandidatesStats() {
|
||
|
|
collector.Collecting()
|
||
|
|
networkType, err := getNetworkType(candidateStats.NetworkType)
|
||
|
|
if err != nil {
|
||
|
|
g.log.Error(err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
candidateType, err := getCandidateType(candidateStats.CandidateType)
|
||
|
|
if err != nil {
|
||
|
|
g.log.Error(err.Error())
|
||
|
|
}
|
||
|
|
|
||
|
|
stats := ICECandidateStats{
|
||
|
|
Timestamp: statsTimestampFrom(candidateStats.Timestamp),
|
||
|
|
ID: candidateStats.ID,
|
||
|
|
Type: StatsTypeRemoteCandidate,
|
||
|
|
NetworkType: networkType,
|
||
|
|
IP: candidateStats.IP,
|
||
|
|
Port: int32(candidateStats.Port),
|
||
|
|
Protocol: networkType.Protocol(),
|
||
|
|
CandidateType: candidateType,
|
||
|
|
Priority: int32(candidateStats.Priority),
|
||
|
|
URL: candidateStats.URL,
|
||
|
|
RelayProtocol: candidateStats.RelayProtocol,
|
||
|
|
}
|
||
|
|
collector.Collect(stats.ID, stats)
|
||
|
|
}
|
||
|
|
collector.Done()
|
||
|
|
}(collector, agent)
|
||
|
|
}
|