gets stuck under uwsgi in emperor mode

[freemant2000]

Thanks for making this great adapter!

I am able to run a simple starlette app under uwsgi using the adapter. However, if I run uwsgi in emperor mode, the vassal seems to get stuck serving a request. Is there anything obvious that I should try? The uwsgi config file and the uwsgi output are below.

<uwsgi>
    <module>wrapper:app</module>
    <master/>
    <threads>4</threads>
    <processes>2</processes>
    <http>127.0.0.1:3031</http>
</uwsgi>

(env-web) kent@dragon:~/env-web/src$ uwsgi --emperor .
*** Starting uWSGI 2.0.20 (64bit) on [Thu Oct 13 13:15:25 2022] ***
compiled with version: 9.4.0 on 13 October 2022 04:31:13
os: Linux-5.4.0-128-generic #144-Ubuntu SMP Tue Sep 20 11:00:04 UTC 2022
nodename: dragon
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 8
current working directory: /home/kent/env-web/src
detected binary path: /home/kent/env-web/bin/uwsgi
*** WARNING: you are running uWSGI without its master process manager ***
your processes number limit is 63234
your memory page size is 4096 bytes
detected max file descriptor number: 1024
*** starting uWSGI Emperor ***
*** has_emperor mode detected (fd: 6) ***
[uWSGI] parsing config file f1.xml
*** Starting uWSGI 2.0.20 (64bit) on [Thu Oct 13 13:15:25 2022] ***
compiled with version: 9.4.0 on 13 October 2022 04:31:13
os: Linux-5.4.0-128-generic #144-Ubuntu SMP Tue Sep 20 11:00:04 UTC 2022
nodename: dragon
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 8
current working directory: /home/kent/env-web/src
detected binary path: /home/kent/env-web/bin/uwsgi
your processes number limit is 63234
your memory page size is 4096 bytes
detected max file descriptor number: 1024
lock engine: pthread robust mutexes
thunder lock: disabled (you can enable it with --thunder-lock)
uWSGI http bound on 127.0.0.1:3031 fd 4
uwsgi socket 0 bound to TCP address 127.0.0.1:41441 (port auto-assigned) fd 3
Python version: 3.8.10 (default, Jun 22 2022, 20:18:18)  [GCC 9.4.0]
Python main interpreter initialized at 0x561947219a60
python threads support enabled
your server socket listen backlog is limited to 100 connections
your mercy for graceful operations on workers is 60 seconds
mapped 312864 bytes (305 KB) for 8 cores
*** Operational MODE: preforking+threaded ***
WSGI app 0 (mountpoint='') ready in 0 seconds on interpreter 0x561947219a60 pid: 18185 (default app)
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 18185)
Thu Oct 13 13:15:25 2022 - [emperor] vassal f1.xml has been spawned
spawned uWSGI worker 1 (pid: 18188, cores: 4)
spawned uWSGI worker 2 (pid: 18189, cores: 4)
Thu Oct 13 13:15:25 2022 - [emperor] vassal f1.xml is ready to accept requests
spawned uWSGI http 1 (pid: 18193)

[abersheeran]

I'm not quite sure where the problem is, maybe you can add your own log output in ASGIMiddleware's call to find the problem.

[freemant2000]

Thanks! I found that if I set master to false, then it works :-) Don't know why though.