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Last updated: 2022-09-26 15:25:28
    It is difficult for ordinary users to measure network quality. Before calls are made, we recommend that you test the network speed to get more accurate results on network quality.

    Notes

    To ensure call quality, do not run the test during a video call.
    Speed testing consumes traffic and consequently generates a small traffic fee (almost negligible).

    Supported Platforms

    iOS
    Android
    macOS
    Windows
    Electron
    Web
    ✓ (Reference: Guide for Web)

    How Speed Testing Works

    
    
    
    During speed testing, the SDK sends a batch of probe packets to the server node, measures the quality of return packets, and returns the testing result via a callback API.
    The testing result can be used to optimize the SDK's server selection policy, so you are advised to run the test before the first call, which will help the SDK select the optimal server. If the result is unsatisfactory, you can show a UI message asking users to change to a better network.
    The test result (TRTCSpeedTestResult) includes the following parameters:
    Parameter
    Type
    Description
    success
    Success result
    Whether the test is successful.
    errMsg
    Error message
    Error message of bandwidth test.
    ip
    Server address
    Testing server IP
    Network quality score
    Network quality measured by the SDK. Lower packet loss and shorter RTT result in a higher network quality score.
    upLostRate
    Upstream packet loss rate
    Value range: 0-1.0. `0.3` indicates that for every 10 data packets sent to the server, 3 may be lost.
    downLostRate
    Downstream packet loss rate
    Value range: 0-1.0. `0.2` indicates that for every 10 data packets received from the server, 2 may be lost.
    rtt
    Latency
    The time it takes for data to travel from the SDK to the server and back again. The shorter the RTT, the better. The normal range of RTT is 10-100 ms.
    availableUpBandwidth
    Upstream bandwidth
    Estimated upstream bandwidth in Kbps. -1 indicates an invalid value.
    availableDownBandwidth
    Downstream bandwidth
    Estimated downstream bandwidth in Kbps. -1 indicates an invalid value.

    How to Test Speed

    The speed test feature can be started through the startSpeedTest function of TRTCCloud. The speed test result will be called back through the callback function.
    Objective-C
    Java
    C++
    C#
    // Sample code for starting speed testing. `sdkAppId` and `UserSig` are required. For how to get them, see Basic Features.
    // The example below starts after login.
    - (void)onLogin:(NSString *)userId userSig:(NSString *)userSid
    {
    TRTCSpeedTestParams *params;
    // `sdkAppID` is the actual application ID obtained from the console.
    params.sdkAppID = sdkAppId;
    params.userID = userId;
    params.userSig = userSig;
    // Expected upstream bandwidth in Kbps. Value range: 10–5000. 0 indicates not to test
    params.expectedUpBandwidth = 5000;
    // Expected downstream bandwidth in Kbps. Value range: 10–5000. 0 indicates not to test
    params.expectedDownBandwidth = 5000;
    [trtcCloud startSpeedTest:params];
    }
    - (void)onSpeedTestResult:(TRTCSpeedTestResult *)result {
    // The speed test result will be called back after the test is completed
    }
    
    // Sample code for starting speed testing. `sdkAppId` and `UserSig` are required. For how to get them, see Basic Features.
    // The example below starts after login.
    public void onLogin(String userId, String userSig)
    {
    TRTCCloudDef.TRTCSpeedTestParams params = new TRTCCloudDef.TRTCSpeedTestParams();
    params.sdkAppId = GenerateTestUserSig.SDKAPPID;
    params.userId = mEtUserId.getText().toString();
    params.userSig = GenerateTestUserSig.genTestUserSig(params.userId);
    params.expectedUpBandwidth = Integer.parseInt(expectUpBandwidthStr);
    params.expectedDownBandwidth = Integer.parseInt(expectDownBandwidthStr);
    // `sdkAppID` is the actual application ID obtained from the console.
    trtcCloud.startSpeedTest(params);
    }
    
    // Listen for the test result. Inherit `TRTCCloudListener` and implement the following method.
    void onSpeedTestResult(TRTCCloudDef.TRTCSpeedTestResult result)
    {
    // The speed test result will be called back after the test is completed
    }
    
    // Sample code for starting speed testing. `sdkAppId` and `UserSig` are required. For how to get them, see Basic Features.
    // The example below starts after login.
    void onLogin(const char* userId, const char* userSig)
    {
    TRTCSpeedTestParams params;
    // `sdkAppID` is the actual application ID obtained from the console.
    params.sdkAppID = sdkAppId;
    params.userId = userid;
    param.userSig = userSig;
    // Expected upstream bandwidth in Kbps. Value range: 10–5000. 0 indicates not to test
    param.expectedUpBandwidth = 5000;
    // Expected downstream bandwidth in Kbps. Value range: 10–5000. 0 indicates not to test
    param.expectedDownBandwidth = 5000;
    trtcCloud->startSpeedTest(params);
    }
    
    // Listen for the testing result
    void TRTCCloudCallbackImpl::onSpeedTestResult(
    const TRTCSpeedTestResult& result)
    {
    // The speed test result will be called back after the test is completed
    }
    
    // Sample code for starting speed testing. `sdkAppId` and `UserSig` are required. For how to get them, see Basic Features.
    // The example below starts after login.
    private void onLogin(string userId, string userSig)
    {
    TRTCSpeedTestParams params;
    // `sdkAppID` is the actual application ID obtained from the console.
    params.sdkAppID = sdkAppId;
    params.userId = userid;
    param.userSig = userSig;
    // Expected upstream bandwidth in Kbps. Value range: 10–5000. 0 indicates not to test
    param.expectedUpBandwidth = 5000;
    // Expected downstream bandwidth in Kbps. Value range: 10–5000. 0 indicates not to test
    param.expectedDownBandwidth = 5000;
    mTRTCCloud.startSpeedTest(params);
    }
    
    // Listen for the testing result
    public void onSpeedTestResult(TRTCSpeedTestResult result)
    {
    // The speed test result will be called back after the test is completed
    }
    

    Speed Test Tool

    If you don't want to call an API to test the network speed, you can use the network speed test tool for PC provided by TRTC to quickly get the network quality details.

    Test metrics

    Metric
    Description
    WiFi Quality
    Wi-Fi signal reception quality
    DNS RTT
    Tencent Cloud testing domain DNS round-trip time (RTT)
    MTR
    MTR is a network speed test tool, which can detect the packet loss rate and latency between client and TRTC node and display the details of each hop in the route
    UDP Loss
    UDP packet loss rate between client and TRTC node
    UDP RTT
    UDP latency between client and TRTC node
    Local RTT
    Latency between client and local gateway
    Upload
    Estimated upstream bandwidth
    Download
    Estimated downstream bandwidth

    Tool screenshots

    Quick test:
    
    Continuous test:
    
    
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