Question

我有一个Azure bot，它能够使用Bing Speech API获取wav音频文件并翻译成文本。我试图将其与Skype联系起来。我无法弄清楚如何从附件中获取流。我的代码的第一部分找到了ContentType ='audio'的Skype附件ok：

    public async Task<string> GetText(IMessageActivity messageActivity)
    {
        var connector = new ConnectorClient(new Uri(messageActivity.ServiceUrl));
        try
        {
            var skypeAudioAttachment = messageActivity.Attachments?.FirstOrDefault(sa => sa.ContentType.Equals("audio"));
            if (skypeAudioAttachment != null)
            {
                var stream = await GetAudioStream(connector, skypeAudioAttachment);

但是我正在尝试使用下面的代码（取自Microsoft BotBuilder示例的Controller \ MessagesController.cs文件：https://github.com/Microsoft/BotBuilder-Samples/tree/master/CSharp/intelligence-SpeechToText）来获取流：

    private static async Task<Stream> GetAudioStream(ConnectorClient connector, Attachment audioAttachment)
    {
        using (var httpClient = new HttpClient())
        {
            // The Skype attachment URLs are secured by JwtToken,
            // you should set the JwtToken of your bot as the authorization header for the GET request your bot initiates to fetch the image.
            // https://github.com/Microsoft/BotBuilder/issues/662
            var uri = new Uri(audioAttachment.ContentUrl);
            if (uri.Host.EndsWith("skype.com") && uri.Scheme == "https")
            {
                httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", await GetTokenAsync(connector));
                httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/octet-stream"));
            }

            return await httpClient.GetStreamAsync(uri);
        }
    }

    private static async Task<string> GetTokenAsync(ConnectorClient connector)
    {
        var credentials = connector.Credentials as MicrosoftAppCredentials;
        if (credentials != null)
        {
            return await credentials.GetTokenAsync();
        }

        return null;
    }

这失败了，我想因为我无法访问该网址。有没有人有一个如何获取Skype音频流或知道我应该做什么的例子？

ContentUrl的格式为：https://smba.trafficmanager.net/apis/v3/attachments/LONG_ID_GOES_HERE/views/original。我从httpClient.GetStreamAsync请求返回的错误是“响应状态代码不表示成功：401（未授权）”。

谢谢

用于Bing Speech to Text bot的Skype音频

0 个答案: