Wit.ai超时C#Unity

时间:2016-09-01 09:46:13

标签: c# unity3d httpwebrequest httpwebresponse wit.ai

所以使用Wit.ai我尝试使用语音文本。我正在使用Github的Wit3D示例:https://github.com/afauch/wit3d/blob/master/Assets/UserScripts/Wit3D.cs

录制声音并保存到.wav文件就可以了。将请求发送到服务器不会。 .wav文件有效,因为我通过Postman手动发出请求时得到响应。

请求代码如下所示:

string GetJSONText(string file)
{
    // get the file w/ FileStream
    FileStream filestream = new FileStream(file, FileMode.Open, FileAccess.Read);
    BinaryReader filereader = new BinaryReader(filestream);
    byte[] BA_AudioFile = filereader.ReadBytes((Int32)filestream.Length);
    filestream.Close();
    filereader.Close();
    //var bytes = File.ReadAllBytes(Path.Combine(Application.dataPath, "sample.wav"));

    // create an HttpWebRequest
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://api.wit.ai/speech?v=20160901");

    request.Method = "POST";
    request.Headers["Authorization"] = "Bearer 3XFWDOBVS65V5A2VZWZFBB2PHOKDWGOH";
    request.ContentType = "audio/wav";
    //request.Timeout = 10000;

    request.GetRequestStream().Write(BA_AudioFile, 0, BA_AudioFile.Length);

    // Process the wit.ai response
    try
    {
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        if (response.StatusCode == HttpStatusCode.OK)
        {
            print("Http went through ok");
            StreamReader response_stream = new StreamReader(response.GetResponseStream());
            return response_stream.ReadToEnd();
        }
        else
        {
            return "Error: " + response.StatusCode.ToString();
            return "HTTP ERROR";
        }
    }
    catch (Exception ex)
    {
        return "Error: " + ex.Message;
        return "HTTP ERROR";
    }
}

无论是否在请求中放置超时,我都会收到以下错误消息:"错误:请求超时"

删除该行:

request.GetRequestStream().Write(BA_AudioFile, 0, BA_AudioFile.Length)

会得到我的答复: 错误:获取响应流时出错(写入:身份验证或解密失败。) 这是有道理的,因为没有什么可以解密。 我的防火墙似乎不是问题所在。有关为什么会有超时的想法?使用不同的获取字节[]的方法也没有解决它。

编辑: 将代码放在普通的控制台应用程序中确实有效。所以这似乎是一个Unity问题。

1 个答案:

答案 0 :(得分:1)

将此添加到您的脚本顶部:

using System.Collections.Generic;

使用此代码。

public void SendRequest(string wavPath)
{
    if(!File.Exists(wavPath))
    {
        Debug.Log("Invalid wav path.");
        return;
    }
    StartCoroutine(SendRequestToWitAi(wavPath));
}

public IEnumerator SendRequestToWitAi(string wavPath)
{
    string API_KEY = "3XFWDOBVS65V5A2VZWZFBB2PHOKDWGOH";

    string url = "https://api.wit.ai/speech?v=20160526";

    byte[] postData = File.ReadAllBytes(wavPath);
    Dictionary<string, string> headers = new Dictionary<string, string>();
    headers["Content-Type"] = "audio/wav";
    headers["Authorization"] = "Bearer " + API_KEY;

    float timeSent = Time.time;
    WWW www = new WWW(url, postData, headers);
    yield return www;

    while (!www.isDone)
    {
        yield return null;
    }
    float duration = Time.time - timeSent;

    if (www.error != null && www.error.Length > 0)
    {
        Debug.Log("Error: " + www.error + " (" + duration + " secs)");
        yield break;
    }
    Debug.Log("Success (" + duration + " secs)");
    Debug.Log("Result: " + www.text);
}

使用JSON解析器解析www.text值。 “_text”字段包含结果文本。