智慧.ai超时c# Unity

我在试着用语音发短信。我使用的Wit3D的例子从Github: https://github.com/afauch/wit3d/blob/master/Assets/UserScripts/Wit3D.cs

录制声音并保存到。wav文件工作得很好。将请求发送到服务器则不会。wav文件是有效的，因为我在通过Postman手动发出请求时得到响应。

请求代码如下:

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";
    }
}

无论是否在请求上设置超时，我都会得到以下错误消息:"错误:请求超时"

删除行:

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

会给我一个回应:错误:获取响应流错误(写:身份验证或解密失败。)这说得通，因为没有什么要解密的。我的防火墙好像不是问题。知道为什么会有暂停吗?使用不同的方法获取字节[]也不能解决这个问题。

编辑:将代码放入正常的控制台应用程序中确实有效。所以这似乎是Unity的问题。

using System.Collections.Generic;

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);
}