MockWebSocketFactory.kt
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/*
* Copyright 2023 LiveKit, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.livekit.android.mock
import com.google.protobuf.MessageLite
import io.livekit.android.util.toOkioByteString
import io.livekit.android.util.toPBByteString
import livekit.LivekitModels
import livekit.LivekitRtc.LeaveRequest
import livekit.LivekitRtc.SignalRequest
import livekit.LivekitRtc.SignalResponse
import livekit.LivekitRtc.TrackPublishedResponse
import okhttp3.Request
import okhttp3.WebSocket
import okhttp3.WebSocketListener
import okio.ByteString
class MockWebSocketFactory : WebSocket.Factory {
/**
* The most recently created [WebSocket].
*/
lateinit var ws: MockWebSocket
/**
* The request used to create [ws]
*/
lateinit var request: Request
/**
* The listener associated with [ws]
*/
lateinit var listener: WebSocketListener
override fun newWebSocket(request: Request, listener: WebSocketListener): WebSocket {
this.ws = MockWebSocket(request, listener) { byteString ->
val signalRequest = SignalRequest.parseFrom(byteString.toPBByteString())
handleSignalRequest(signalRequest)
}
this.listener = listener
this.request = request
onOpen?.invoke(this)
return ws
}
private val signalRequestHandlers = mutableListOf<SignalRequestHandler>(
{ signalRequest -> defaultHandleSignalRequest(signalRequest) },
)
fun registerSignalRequestHandler(handler: SignalRequestHandler) {
signalRequestHandlers.add(0, handler)
}
private fun handleSignalRequest(signalRequest: SignalRequest) {
for (handler in signalRequestHandlers) {
if (handler.invoke(signalRequest)) {
break
}
}
}
private fun defaultHandleSignalRequest(signalRequest: SignalRequest): Boolean {
when (signalRequest.messageCase) {
SignalRequest.MessageCase.ADD_TRACK -> {
val addTrack = signalRequest.addTrack
val trackPublished = with(SignalResponse.newBuilder()) {
trackPublished = with(TrackPublishedResponse.newBuilder()) {
cid = addTrack.cid
track = if (addTrack.type == LivekitModels.TrackType.AUDIO) {
TestData.LOCAL_AUDIO_TRACK
} else {
TestData.LOCAL_VIDEO_TRACK
}
build()
}
build()
}
receiveMessage(trackPublished)
return true
}
SignalRequest.MessageCase.LEAVE -> {
val leaveResponse = with(SignalResponse.newBuilder()) {
leave = with(LeaveRequest.newBuilder()) {
canReconnect = false
reason = LivekitModels.DisconnectReason.CLIENT_INITIATED
build()
}
build()
}
receiveMessage(leaveResponse)
return true
}
else -> {
return false
}
}
}
var onOpen: ((MockWebSocketFactory) -> Unit)? = null
fun receiveMessage(message: MessageLite) {
receiveMessage(message.toOkioByteString())
}
fun receiveMessage(byteString: ByteString) {
listener.onMessage(ws, byteString)
}
}
typealias SignalRequestHandler = (SignalRequest) -> Boolean