Check client conditional request

1 files changed, 9 insertions, 0 deletions

diff --git a/doc/webid-oidc.texi b/doc/webid-oidc.texi
index 5900256..039bf30 100644
--- a/doc/webid-oidc.texi
+++ b/doc/webid-oidc.texi
@@ -1284,6 +1284,15 @@ resource, at @var{path}.
 The @var{user} wanted to do something under @var{path} requiring
 @var{mode}, but it is not the @var{owner} and it is forbidden by WAC.
 @end deftp
+
+@deftp {exception type} &precondition-failed @var{path} @var{if-match} @var{if-none-match} @var{real-etag}
+The resource under @var{path} has a @var{real-etag} that does not
+match the request headers @var{if-match} and @var{if-none-match}.
+
+If the resource does not exist, @var{real-etag} is set to
+@code{#f}. In this case, an exception of type @code{&path-not-found}
+is also thrown.
+@end deftp
 @node GNU Free Documentation License
 @appendix GNU Free Documentation License