Added transfer-encoding

Author: mediumTaj

src/IBM.WatsonDeveloperCloud.SpeechToText/v1/SpeechToTextService.cs

@@ -311,6 +311,9 @@ private SpeechRecognitionEvent Recognize(string sessionId, string contentType, M
                                    .WithHeader("Cookie", sessionId);
                 }
 
+                if (!string.IsNullOrEmpty(transferEncoding))
+                    request.WithHeader("Transfer-Encoding", transferEncoding);
+
                 if (metaData == null)
                 {
                     // if a session exists, the model should not be sent

test/IBM.WatsonDeveloperCloud.SpeechToText.IntegrationTests/SpeechToTextServiceIntegrationTest.cs

@@ -242,7 +242,7 @@ public void t09_ObserveResult_Success()
             };
 
             var recognize =
-                service.RecognizeWithSession(session.SessionId, audio.GetMediaTypeFromFile(), metadata, audio, "", modelName);
+                service.RecognizeWithSession(session.SessionId, audio.GetMediaTypeFromFile(), metadata, audio, "chunked", modelName);
 
             var results =
                 service.ObserveResult(session.SessionId, interimResults: true);