我想添加一个错误处理程序，它可以在出现internet连接问题时停止转录过程。我创建了一个连接监视器线程，每隔几秒钟检查一次internet连接，并将设置一个标志isConnectionError = True。在

我设法停止音频录制生成器进程，但无法停止另一个阻止并等待服务器发送响应消息的生成器进程：def listen_print_loop(responses):

"""Iterates through server responses and prints them.

The responses passed is a generator that will block until a response

is provided by the server.

Each response may contain multiple results, and each result may contain

multiple alternatives; for details, see . Here we

print only the transcription for the top alternative of the top result.

In this case, responses are provided for interim results as well. If the

response is an interim one, print a line feed at the end of it, to allow

the next result to overwrite it, until the response is a final one. For the

final one, print a newline to preserve the finalized transcription.

"""

num_chars_printed = 0

for response in responses:

if not response.results:

continue

# The `results` list is consecutive. For streaming, we only care about

# the first result being considered, since once it's `is_final`, it

# moves on to considering the next utterance.

result = response.results[0]

if not result.alternatives:

continue

# Display the transcription of the top alternative.

transcript = result.alternatives[0].transcript

# Display interim results, but with a carriage return at the end of the

# line, so subsequent lines will overwrite them.

#

# If the previous result was longer than this one, we need to print

# some extra spaces to overwrite the previous result

overwrite_chars = ' ' * (num_chars_printed - len(transcript))

if not result.is_final:

sys.stdout.write(transcript + overwrite_chars + '\r')

sys.stdout.flush()

num_chars_printed = len(transcript)

else:

print(transcript + overwrite_chars)

# Exit recognition if any of the transcribed phrases could be

# one of our keywords.

if re.search(r'\b(exit|quit)\b', transcript, re.I):

print('Exiting..')

break

num_chars_printed = 0