在 agora.io 中为 android 使用令牌身份验证的 1v1 视频聊天

Question

我正在尝试使用基于令牌的身份验证在我的 android 应用程序中实施 1v1 视频聊天。我可以生成令牌并在我的应用程序中使用它。但它不起作用。我想知道当我生成令牌时，我会为第 2 个用户使用 1 个 uid，还是会为第 2 个用户使用 2 个不同的 uid。如果我使用 1 个 uid，那么我将对这 2 个用户使用相同的令牌。如果我使用 2 个 uid，然后为这 2 个用户创建 2 个不同的令牌。我无法解决这个基于令牌的身份验证。它是如何工作的？你能帮帮我吗？

例如，1 位用户正在尝试进行视频通话。我可以使用此用户的 uid 生成令牌。当另一个用户加入此视频通话时，第二个用户将使用相同的令牌，还是第二个用户将使用其 uid 生成另一个令牌。我对这部分感到困惑。第二个用户将如何加入通话？谢谢

我的视频通话代码：

class VideoCallActivity : AppCompatActivity() {

private val db = Firebase.firestore

// Kotlin
// Fill the App ID of your project generated on Agora Console.
private val APP_ID = "app_id"

// Fill the channel name.
private val CHANNEL = "appointment"


private var TOKEN =

private var mRtcEngine: RtcEngine? = null

private lateinit var localContainer: FrameLayout
private lateinit var remoteContainer: FrameLayout

private var uniqueUserUidLocal: Int = 0
private var uniqueUserUidRemote: Int = 0

private val mRtcEventHandler = object : IRtcEngineEventHandler() {
    // Listen for the remote user joining the channel to get the uid of the user.
    override fun onUserJoined(uniqueUserUidRemote: Int, elapsed: Int) {
        runOnUiThread {
            // Call setupRemoteVideo to set the remote video view after getting uid from the onUserJoined callback.

            setupRemoteVideo(uniqueUserUidRemote)

            
        }
    }
   
}


override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_video_call)

    localContainer = findViewById<FrameLayout>(R.id.local_video_view_container)
    remoteContainer = findViewById<FrameLayout>(R.id.remote_video_view_container)

    val userId = intent.getStringExtra("chaplainUniqueUserId").toString()
    uniqueUserUidRemote = userId.toInt(10)

    getToken()
    //initializeAndJoinChannel()


    video_page_finnish_call_imageButton.setOnClickListener {
        mRtcEngine?.stopPreview()
        mRtcEngine?.leaveChannel()
        RtcEngine.destroy()
        finish()
    }

}

private fun getToken(){
    //getting token info from rest api
    val retrofit = Retrofit.Builder()
        .baseUrl("https://kadir.webprogrammer.fi/")
        .addConverterFactory(GsonConverterFactory.create())
        .build()

    val api = retrofit.create(TokenApiInterface::class.java)

    //this part is not clear. which uid should be used remote uid or local uid
    api.fetchAllData(uid = uniqueUserUidRemote.toString()).enqueue(object : Callback<TokenModelClass> {
        override fun onResponse(
            call: Call<TokenModelClass>,
            response: Response<TokenModelClass>
        ) {
            TOKEN = response.body()?.token ?: TOKEN
            Log.e("TOKEN_1: ", TOKEN)
            Log.e("TOKEN_2: ", uniqueUserUidRemote.toString())
            initializeAndJoinChannel(TOKEN)
        }

        override fun onFailure(call: Call<TokenModelClass>, t: Throwable) {
            Log.e("TOKEN: ", t.message.toString())
        }

    })

}


private fun initializeAndJoinChannel(TOKEN: String) {
    try {
        mRtcEngine = RtcEngine.create(baseContext, APP_ID, mRtcEventHandler)
    } catch (e: Exception) {

    }

    // By default, video is disabled, and you need to call enableVideo to start a video stream.
    mRtcEngine!!.enableVideo()
    // Call CreateRendererView to create a SurfaceView object and add it as a child to the FrameLayout.
    val localFrame = RtcEngine.CreateRendererView(baseContext)
    localFrame.setZOrderMediaOverlay(true)
    localContainer.addView(localFrame)
    // Pass the SurfaceView object to Agora so that it renders the local video.
    mRtcEngine!!.setupLocalVideo(VideoCanvas(localFrame, VideoCanvas.RENDER_MODE_FIT, 0))
    //this uid is the local user uid, not the remote user uid

    // Join the channel with a token.
    mRtcEngine!!.joinChannel(TOKEN, CHANNEL, "", 0)

}

private fun setupRemoteVideo(uniqueUserUidRemote: Int) {

    val remoteFrame = RtcEngine.CreateRendererView(baseContext)
    //remoteFrame.setZOrderMediaOverlay(true)
    remoteContainer.addView(remoteFrame)
    mRtcEngine!!.setupRemoteVideo(
        VideoCanvas(
            remoteFrame,
            VideoCanvas.RENDER_MODE_FIT,
            uniqueUserUidRemote
        )
    )
}

override fun onDestroy() {
    super.onDestroy()
    mRtcEngine?.stopPreview()
    mRtcEngine?.leaveChannel()
    RtcEngine.destroy()
}

}

Answer 1

您生成的每个令牌对于一个频道和 UID 都是唯一的。因此，当您的应用加载时，它应该加载网络请求。使用从令牌服务器返回的令牌，您可以调用 joinChannel 方法，确保将相同的 UID 和频道名称传递给生成令牌时使用的 joinChannel 参数。

您可以在此处阅读更多相关信息：https://www.agora.io/en/blog/connecting-to-agora-with-tokens-android/

在 agora.io 中为 android 使用令牌身份验证的 1v1 视频聊天

1v1 video chat using token authentication in agora.io for android

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