[1] [CITE@en[psgi-specs/Extensions.pod at master · plack/psgi-specs]]
([TIME[2017-06-07 14:38:29 +09:00]])
<https://github.com/plack/psgi-specs/blob/master/PSGI/Extensions.pod>

[2] [CITE@en[uwsgi/psgi_response.c at master · unbit/uwsgi]]
([TIME[2017-06-07 14:39:06 +09:00]])
<https://github.com/unbit/uwsgi/blob/master/plugins/psgi/psgi_response.c>

[3] [CITE@en[uwsgi/psgi_plugin.c at master · unbit/uwsgi]]
([TIME[2017-06-07 14:41:06 +09:00]])
<https://github.com/unbit/uwsgi/blob/master/plugins/psgi/psgi_plugin.c>