doc: httpd: document GIT_HTTP_MAX_REQUEST_BUFFER

We've always shared this environment with git-http-backend(1)
(but don't (yet) support http.maxRequestBuffer anywhere)

diff --git a/Documentation/public-inbox-httpd.pod b/Documentation/public-inbox-httpd.pod
index 6a8673d843dddd96d14eca8809f9123be5c98055..3ed48adca8cc1c4fdc74ab2a6703952049033389 100644 (file)
--- a/Documentation/public-inbox-httpd.pod
+++ b/Documentation/public-inbox-httpd.pod
@@ -20,6 +20,19 @@ L<Plack::Middleware::Head>
 
 This may point to a PSGI file for supporting generic PSGI apps.
 
+=head1 ENVIRONMENT
+
+=over 8
+
+=item GIT_HTTP_MAX_REQUEST_BUFFER
+
+Shared with L<git-http-backend(1)>, this governs the maximum upload
+size of an HTTP request.
+
+Default: 10m
+
+=back
+
 =head1 CONTACT
 
 Feedback welcome via plain-text mail to L<mailto:meta@public-inbox.org>
@@ -29,7 +42,7 @@ L<http://4uok3hntl7oi7b4uf4rtfwefqeexfzil2w6kgk2jn5z2f764irre7byd.onion/meta/>
 
 =head1 COPYRIGHT
 
-Copyright 2013-2021 all contributors L<mailto:meta@public-inbox.org>
+Copyright all contributors L<mailto:meta@public-inbox.org>
 
 License: AGPL-3.0+ L<https://www.gnu.org/licenses/agpl-3.0.txt>