单链接限速

public class UploadObject
{
    private CosXml cosXml; //将服务用户设置成数据成员
    // 初始化COS服务实例
    private void InitCosXml()
    {
        string region = Environment.GetEnvironmentVariable("COS_REGION");
        CosXmlConfig config = new CosXmlConfig.Builder()
            .SetRegion(region) // 设置默认的地域, COS 地域的简称请参照 https://cloud.tencent.com/document/product/436/6224
            .Build();
        string secretId = Environment.GetEnvironmentVariable("SECRET_ID"); // 云 API 密钥 SecretId, 获取 API 密钥请参照 https://console.cloud.tencent.com/cam/capi
        string secretKey = Environment.GetEnvironmentVariable("SECRET_KEY"); // 云 API 密钥 SecretKey, 获取 API 密钥请参照 https://console.cloud.tencent.com/cam/capi
        long durationSecond = 600; //每次请求签名有效时长，单位为秒
        QCloudCredentialProvider qCloudCredentialProvider = new DefaultQCloudCredentialProvider(secretId, secretKey, durationSecond);
        this.cosXml = new CosXmlServer(config, qCloudCredentialProvider);
    }
}

public async Task UploadObjectTrafficLimit()
{
    TransferConfig transferConfig = new TransferConfig();
    // 初始化 TransferManager
    TransferManager transferManager = new TransferManager(cosXml, transferConfig);
    // 存储桶名称，此处填入格式必须为 bucketname-APPID, 其中 APPID 获取参考 https://console.cloud.tencent.com/developer
    string bucket = "examplebucket-1250000000";
    string cosPath = "dir/exampleObject"; // 对象键
    string srcPath = @"temp-source-file";//本地文件绝对路径

    PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, srcPath);
    putObjectRequest.LimitTraffic(8 * 1000 * 1000); // 限制为1MB/s

    COSXMLUploadTask uploadTask = new COSXMLUploadTask(putObjectRequest);

    uploadTask.SetSrcPath(srcPath);
    await transferManager.UploadAsync(uploadTask);
}

public async Task DownloadObjectTrafficLimit()
{
    TransferConfig transferConfig = new TransferConfig();
    // 初始化 TransferManager
    TransferManager transferManager = new TransferManager(cosXml, transferConfig);

    String bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
    String cosPath = "exampleobject"; //对象在存储桶中的位置标识符，即称对象键
    string localDir = System.IO.Path.GetTempPath();//本地文件夹
    string localFileName = "my-local-temp-file"; //指定本地保存的文件名

    GetObjectRequest request = new GetObjectRequest(bucket, cosPath, localDir, localFileName);
    request.LimitTraffic(8 * 1000 * 1024); // 限制为1MB/s

    COSXMLDownloadTask downloadTask = new COSXMLDownloadTask(request);
    await transferManager.DownloadAsync(downloadTask);
}