Develop Reference

Google speech to text API in C# stopped working

I am trying to convert voice to text using Google Speech API. I have a sample code below. It was working fine, it stopped working suddenly and now it always throws the error - 400 bad request. I am using GOOGLE_SPEECH_KEY for authentication without OAuth2 token.
Not sure what exactly I'm missing. Do I need to create OAuth authentication or do I need to modify any console settings in google portal or need to modify the code itself ? Please help!
I used all the below api's and same 400 error:
1. url = "https://speech.googleapis.com/v1beta1/speech:syncrecognize?key=" + ACCESS_GOOGLE_SPEECH_KEY;
2. url = "https://speech.googleapis.com/v1/speech:recognize?key=" + ACCESS_GOOGLE_SPEECH_KEY;
3. url = "https://speech.googleapis.com/v1p1beta1/speech:recognize?key=" + ACCESS_GOOGLE_SPEECH_KEY;
public static string GoogleSpeechToTextApi(string flacUrl)
{
string pTranscriptText = "None", pTranscriptConfidence = "";
string appendText = "";
try
{
// Stream responseStream = imageResponse.GetResponseStream();
if (flacUrl != null)
{
string blobURI = flacUrl;
WebClient myWebClient = new WebClient();
Stream fileStream = myWebClient.OpenRead(blobURI);
byte[] BA_AudioFile = null;
using (var stream2 = new MemoryStream())
{
fileStream.CopyTo(stream2);
stream2.SetLength(stream2.Length);
stream2.Read(stream2.GetBuffer(), 0, (int)stream2.Length);
BA_AudioFile = stream2.GetBuffer();
}
string audioInput = Convert.ToBase64String(BA_AudioFile);
Config config = new Config();
config.encoding = "flac";
config.languageCode = "en";
config.sampleRate = "8000";
Audio audio = new Audio();
audio.content = audioInput;
JsonRequest request = new JsonRequest();
request.config = config;
request.audio = audio;
string json = JsonConvert.SerializeObject(request);
string url = "https://speech.googleapis.com/v1beta1/speech:syncrecognize?key=" + ACCESS_GOOGLE_SPEECH_KEY; // original api url
//url = "https://speech.googleapis.com/v1/speech:recognize?key=" + ACCESS_GOOGLE_SPEECH_KEY; // tested with this
//url = "https://speech.googleapis.com/v1p1beta1/speech:recognize?key=" + ACCESS_GOOGLE_SPEECH_KEY; // tested with this
WebRequest webRequest = WebRequest.Create(url);
webRequest.Method = "POST";
byte[] byteArray = Encoding.UTF8.GetBytes(json);
webRequest.ContentLength = byteArray.Length;
Stream dataStream = webRequest.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
WebResponse response = webRequest.GetResponse();
dataStream = response.GetResponseStream();
StreamReader reader = new StreamReader(dataStream);
string responseFromServer = reader.ReadToEnd();
RootObject ro = JsonConvert.DeserializeObject<RootObject>(responseFromServer);
dynamic JsonArray = JsonConvert.DeserializeObject(responseFromServer);
var jsonResult = JsonArray["results"];
foreach (var item in jsonResult)
{
appendText += item.alternatives[0].transcript;
}
}
return appendText;
}
catch (Exception ex)
{
return appendText = "Error";
}
}
}
}

Error 400 means that your request is not correct. You can try encoding = linear16, audioChannelCount = 2 and sampleRateHertz = 16000 with file wav.
Btw, you can pass your key in header request instead in your url

HttpWebResponse not responding from PHP

So I have this code in C#.
private void SendMessage()
{
// this is what we are sending
string post_data = "loginIdPost=" + 2 + "&" + "contentPost=" + absenceInputField.text;
string uri = "<URI IS HERE>";
HttpWebRequest request = (HttpWebRequest)
WebRequest.Create(uri); request.KeepAlive = false;
request.ProtocolVersion = HttpVersion.Version10;
request.Method = "POST";
byte[] postBytes = Encoding.ASCII.GetBytes(post_data);
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = postBytes.Length;
Stream requestStream = request.GetRequestStream();
requestStream.Write(postBytes, 0, postBytes.Length);
requestStream.Close();
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Console.WriteLine(new StreamReader(response.GetResponseStream()).ReadToEnd());
Debug.Log(new StreamReader(response.GetResponseStream()).ReadToEnd());
Debug.Log(response.StatusCode);
Console.WriteLine(response.StatusCode);
}
It sends some information to a PHP file, which then puts data into my database. The data is being successfully sent, but the HttpWebResponse is coming back blank. It returns "", an empty string.
This is my PHP code.
<?php
//Id
if (isset($_POST["loginIdPost"]))
{
$loginId = $_POST["loginIdPost"];
}
else
{
$loginId = null;
}
//Content
if (isset($_POST["contentPost"]))
{
$content = $_POST["contentPost"];
}
else
{
$content = null;
}
try
{
$conn = new PDO("Connection String");
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}
catch (PDOException $e)
{
print("Error connecting to SQL Server.");
die(print_r($e));
}
$sth = $conn->prepare('Sql Query is here');
$sth->execute('details of execution are here');
echo "Success";
//Check Connection
if(!$conn)
{
die("Connection Failed. ". mysqli_connect_error());
}
?>
Does anyone know why I'm getting an empty string back, when I'd expect to be getting "Success" back. Again, no errors in the php code as the SQL query does insert data into my database.

I managed to fix it by just removing Console.Writeline.

Parsing POST request data with FiddlerCore

I'm tring to capture a local POST requset and parse its data.
For testing only, the FiddlerCore should only response with the data it has parsed.
Here's the code of the FidlerCore encapsulation:
private void FiddlerApplication_BeforeRequest(Session oSession)
{
if (oSession.hostname != "localhost") return;
eventLog.WriteEntry("Handling local request...");
oSession.bBufferResponse = true;
oSession.utilCreateResponseAndBypassServer();
oSession.oResponse.headers.HTTPResponseStatus = "200 Ok";
oSession.oResponse["Content-Type"] = "text/html; charset=UTF-8";
oSession.oResponse["Cache-Control"] = "private, max-age=0";
string body = oSession.GetRequestBodyAsString();
oSession.utilSetResponseBody(body);
}
Here's the code of the request sender:
const string postData = "This is a test that posts this string to a Web server.";
try
{
WebRequest request = WebRequest.Create("http://localhost/?action=print");
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
request.ContentLength = byteArray.Length;
request.ContentType = "text/html";
request.Method = "POST";
using (Stream stream = request.GetRequestStream())
{
stream.Write(byteArray, 0, byteArray.Length);
}
using (WebResponse response = request.GetResponse())
{
txtResponse.Text = ((HttpWebResponse)response).StatusDescription;
using (Stream stream = response.GetResponseStream())
{
using (StreamReader streamReader = new StreamReader(stream))
{
string responseFromServer = streamReader.ReadToEnd();
streamReader.Close();
txtResponse.Text = responseFromServer;
}
}
}
}
catch (Exception ex)
{
txtResponse.Text = ex.Message;
}
I'm getting the following error:
The server committed a protocol violation. Section=ResponseStatusLine
What am I doing wrong?

Got it to work by changing:
WebRequest request = WebRequest.Create("http://localhost/?action=print");
to
WebRequest request = WebRequest.Create("http://localhost:8877/?action=print");
Calling this URL from a browser is intercepted by FiddlerCore correctly, without having to specify the port number. I did not think I should have inserted the listening port, since FiddlerCore should intercept all traffic, right?

Post SOAP envelop to MS Dynamics NAV Web Service

I am trying to post SOAP Envelope directly to Dynamics NAV Webservices using HttpWebRequest, HttpWebResponse.
Code:
private void button1_Click(object sender, EventArgs e)
{
string requestString = LoadData();
HttpWebRequest request;
HttpWebResponse response = null;
string url = "http://localhost:7047/DynamicsNAV70/WS/Page/nav_Item";
byte[] requestBuffer = null;
Stream postStream = null;
Stream responseStream = null;
StreamReader responseReader = null;
request = (HttpWebRequest)WebRequest.Create(url);
request.ProtocolVersion = new Version(1,1);
request.Method = "POST";
//request.Headers.Add("SOAPAction", #"urn:microsoft-dynamics-schemas/page/nav_item:create");
request.Headers.Add("Action", #"urn:microsoft-dynamics-schemas/page/nav_item");
//request.Headers.Add("Content-Type", #"text/xml; charset=utf-8");
request.ContentType = #"application/xml; charset=utf-8";
requestBuffer = Encoding.ASCII.GetBytes(requestString);
request.ContentLength = requestBuffer.Length;
request.UseDefaultCredentials = true;
postStream = request.GetRequestStream();
postStream.Write(requestBuffer, 0, requestBuffer.Length);
postStream.Close();
response = (HttpWebResponse)request.GetResponse();
responseStream = response.GetResponseStream();
string response_result=string.Empty;
if (responseStream != null)
{
responseReader = new StreamReader(responseStream);
response_result = responseReader.ReadToEnd();
}
MessageBox.Show(response_result);
}
private string LoadData()
{
// throw new NotImplementedException();
XmlDocument oCustomer = new XmlDocument();
oCustomer.Load(#"C:\Users\kishore.LOCAL.000\Desktop\NAV_DEMO\NAV_DEMO\bin\Debug\input\item.xml");
return oCustomer.InnerXml;
}
Format of SOAP Envelope is below:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ins="urn:microsoft-dynamics-schemas/page/nav_item">
<soapenv:Header/>
<soapenv:Body>
<ins:Create>
<ins:nav_Item>
<!--Optional:-->
<ins:Key>?</ins:Key>
<!--Optional:-->
<ins:No>1234</ins:No>
<!--Optional:-->
<ins:Description>Test Item</ins:Description>
</ins:nav_Item>
</ins:Create>
</soapenv:Body>
</soapenv:Envelope>
But when I am trying to get response without Header in HttpWebRequest, its returning whole web service in xml format with Status OK, but Item is not inserting in NAV.
When I am trying to get response with Header in HttpWebRequest, its {"The remote server returned an error: (500) Internal Server Error." System.Net.WebExceptionStatus.ProtocolError}
I want to create Item in NAV using soap envelope not by direct referencing the service.
Any help will helpful to me.
With Regards
Kishore K

It looks like you using SOAPui to create request xml. This app always adds invisible chars at the end of each line. Delete them.
Also try to unformat your request, e.g. make it in one line. For unknown reason Nav threats linebreake between certain tags as error (throws http 500). I just forgot which tags (header and body may be). The rest linebreaks are fine.
And SOAPAction header is mandatory so use it or you will get wsdl in response all the time.
P.s. beta of SOAPui works fine with Nav and supports NTLM so you can use it to test different request xml and find which format is correct.

I am new to using intergrating with nav web services, I am trying to send an xml request using a simple c# console application but it is always returning a 401(unauthorised)
static void Main(string[] args)
{
Console.WriteLine("We have started");
string pageName = "http://hrp-dmu.uganda.hrpsolutions.co.ug:9047/DynamicsNAV80/WS/Uganda%20Management%20Institute/Page/CustomerWS";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(pageName);
req.Method = "POST";
req.ContentType = "text/xml;charset=UTF-8";
req.ProtocolVersion = new Version(1, 1);
req.Headers.Add("SOAPAction", #"urn:microsoftdynamicsschemas/page/customerws:Create");
Console.WriteLine("After preparing request object");
string xmlRequest = GetTextFromXMLFile("E:\\tst3.xml");
Console.WriteLine("xml request : "+xmlRequest);
byte[] reqBytes = new UTF8Encoding().GetBytes(xmlRequest);
req.ContentLength = reqBytes.Length;
try
{
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(reqBytes, 0, reqBytes.Length);
}
}
catch (Exception ex)
{
Console.WriteLine("GetRequestStreamException : " + ex.Message);
}
HttpWebResponse resp = null;
try
{
resp = (HttpWebResponse)req.GetResponse();
}
catch (Exception exc)
{
Console.WriteLine("GetResponseException : " + exc.Message);
}
string xmlResponse = null;
if (resp == null)
{
Console.WriteLine("Null response");
}
else
{
using (StreamReader sr = new StreamReader(resp.GetResponseStream()))
{
xmlResponse = sr.ReadToEnd();
}
Console.WriteLine("The response");
Console.WriteLine(xmlResponse);
}
Console.ReadKey();
}
private static string GetTextFromXMLFile(string file)
{
StreamReader reader = new StreamReader(file);
string ret = reader.ReadToEnd();
reader.Close();
return ret;
}

posting data to web pages fails in C#

i have used following code in my c# application
string verification_url = #"http://site.com/posttest.php?";
string verification_data = "test=524001A";
string result = string.Empty;
result = Post(verification_url, verification_data);
public string Post(string url, string data)
{
string result = "";
try
{
byte[] buffer = Encoding.GetEncoding(1252).GetBytes(data);
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(#url);
WebReq.Method = "POST";
WebReq.ContentType = "application/x-www-form-urlencoded";
WebReq.ContentLength = buffer.Length;
Stream PostData = WebReq.GetRequestStream();
PostData.Write(buffer, 0, buffer.Length);
PostData.Close();
HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
Stream Answer = WebResp.GetResponseStream();
StreamReader _Answer = new StreamReader(Answer);
result = _Answer.ReadToEnd();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
if (result.Length < 0)
result = "";
return result;
}
Server side PHP code
<?php
$test=$_REQUEST['test'];
echo $test;
?>
post method always returns empty value
please help me

try
<?php
print_r($_REQUEST);
?>
to show the raw REQUEST vars. im not sure where you setting test in your c# code.

You need to add the verification data as parameter to the request url eg.
string verification_data = "test=524001A";
string verification_url = #"http://site.com/posttest.php?" + verification_data;
That way your actual request URL would be:
http://site.com/posttest.php?test=524001A

Could you try not closing the RequestStream? Try removing the following line:
PostData.Close();
PS: Do you have the necessary .net permissions to do this?

i have changed the following line
string verification_url = #"http://site.com/posttest.php?";
to
string verification_url = #"http://www.site.com/posttest.php?";
it now works fine