Java 谷歌云演讲没有回应

我正在尝试使用谷歌云语音api。我发现一种奇怪的行为发生了好几次。我不明白为什么，我无法从谷歌云演讲中得到任何回应

代码如下：

 public String ConvertSpeech(File audioFile) {
      SpeechClient speech = null;
    try {
        speech = SpeechClient.create();
    } catch (IOException e) {
        e.printStackTrace();
    }
      Path path = Paths.get(audioFile.getName());
      byte[] data = null;
    try {
        data = Files.readAllBytes(path);
    } catch (IOException e) {
        e.printStackTrace();
    }
      ByteString audioBytes = ByteString.copyFrom(data);
      // Configure request with local raw PCM audio
      RecognitionConfig config = RecognitionConfig.newBuilder()
          .setEncoding(AudioEncoding.LINEAR16)
          .setLanguageCode("fr-FR")
          .setSampleRateHertz(16000)
          .build();
      RecognitionAudio audio = RecognitionAudio.newBuilder()
          .setContent(audioBytes)
          .build();
      // Use blocking call to get audio transcript
    //  RecognizeResponse response = speech.recognize(config, audio);
        OperationFuture<LongRunningRecognizeResponse, LongRunningRecognizeMetadata> response =
                speech.longRunningRecognizeAsync(config, audio);

        while (!response.isDone()) {
            System.out.println("Waiting for response...");
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
          }
        List<SpeechRecognitionResult> results = new ArrayList<>();
        try {
            results = response.get().getResultsList();
        } catch (InterruptedException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (ExecutionException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

    //  List<SpeechRecognitionResult> results = response.getResultsList();
        // There can be several alternative transcripts for a given chunk of speech. Just use the
        // first (most likely) one here.
      if(results.size()!=0){
          SpeechRecognitionAlternative alternative = results.get(0).getAlternativesList().get(0);
           // System.out.printf("Transcription: %s%n", alternative.getTranscript());
            try {
                speech.close();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return alternative.getTranscript(); 
      }
       // System.out.printf("Transcription: %s%n", alternative.getTranscript());
        try {
            speech.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return "";

    }

OperationFuture<LongRunningRecognizeResponse, LongRunningRecognizeMetadata> 
    response = speech.longRunningRecognizeAsync(config, audio);

Waiting for response...
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java.util.concurrent.ExecutionException: com.google.api.gax.rpc.DeadlineExceededException: io.grpc.StatusRuntimeException: DEADLINE_EXCEEDED: deadline exceeded after 599979147331ns
at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:500)
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:459)
at com.google.api.gax.longrunning.OperationFutureImpl.get(OperationFutureImpl.java:106)
at mypackage.GoogleCloudSpeechService.ConvertSpeech(GoogleCloudSpeechService.java:66)