def iterator(self):
result = yield
if result is None or isinstance(result, (str, bytes)):
chunk = to_bytes(result)
self.headers['Content-Length'] = len(chunk)
yield chunk
else:
chunks = iter(result)
first_chunk = to_bytes(next(chunks, b''))
try:
result_length = len(result)
except TypeError: # result doesn't support len()
pass
else:
if result_length <= 1:
self.headers['Content-Length'] = len(first_chunk)
yield first_chunk
for chunk in chunks:
yield to_bytes(chunk, error_callback=self.logger.exception)
def __init__(self, status=None, data=None, headers=()):
self.status = status or self.default_status
self.data = to_bytes(data or status)
self.update_headers(headers)