Read HttpClient Stream Asynchronously

Question

I wrote below async method to download file stream from WebApi. But while awaiting result at networkStrm = await httpClient.GetStreamAsync(_downloadRestUrl);

Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. The underlying connection was closed: An unexpected error occurred on a receive.

    async internal Task<Stream> DownloadAsync(string _downloadRestUrl)
    {
        Stream networkStrm = null;
        try
        {
            var baseUrl = GetBaseUrl(_downloadRestUrl);

            HttpClient httpClient = new HttpClient();
            httpClient.Timeout = TimeSpan.FromMinutes(5);
            httpClient.BaseAddress = baseUrl;
            httpClient.DefaultRequestHeaders.Accept.Clear();
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/octet-stream"));

            networkStrm = await httpClient.GetStreamAsync(_downloadRestUrl);
            networkStrm.Seek(0, SeekOrigin.Begin);
        }
        catch (Exception ex)
        {

        }
        return networkStrm;
    }