python - 30 秒超时后，从 Heroku 流式传输大文件失败

Question

我有一个 python web worker，它根据客户请求流式传输一个大文件。 30 秒后连接被 Heroku 终止。我正在使用 web.py 并产生新的输出。根据 Heroku 文档:

Cedar supports HTTP 1.1 features such as long-polling and streaming responses. An application has an initial 30 second window to respond with a single byte back to the client. However, each byte transmitted thereafter (either received from the client or sent by your application) resets a rolling 55 second window. If no data is sent during the 55 second window, the connection will be terminated.

我每 55 秒发送超过 1 个字节，但连接仍然终止。

这些是我正在使用的 header

web.header('Content-type' , 'application/zip')
web.header('Content-Disposition', 'attachment; filename="images.zip"')

我什至尝试添加:

web.header('Transfer-Encoding','chunked')

我做错了什么吗？

Answer 1

问题似乎是错误的 gunicorn 设置造成的。在 Procfile 中延长 gunicron 超时就达到了目的:

--timeout 300