DAV header content

[bd46]

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When locks are anabled, mount.davfs from davfs2 package fails to mount, with reply that resource is not webav share. The reason is content of header "DAV:2". But as stated in https://docs.microsoft.com/en-us/previous-versions/office/developer/exchange-server-2003/aa142827(v%3Dexchg.65) , "The value of the DAV header is a list of all compliance classes that the resource supports... Class 2 compliant resources will minimally return the values "1" and "2" in the DAV header of all responses to the HTTP OPTIONS method." Patch:

--- ngx_http_dav_ext_module.c.orig      2018-12-17 11:45:12.000000000 +0300
+++ ngx_http_dav_ext_module.c   2019-11-11 20:53:25.341578780 +0300
@@ -503,7 +503,7 @@
 
         ngx_str_set(&h->key, "DAV");
         h->value.len = 1;
-        h->value.data = (u_char *) (dlcf->shm_zone ? "2" : "1");
+        h->value.data = (u_char *) (dlcf->shm_zone ? "1,2" : "1");
         h->hash = 1;
 
         h = ngx_list_push(&r->headers_out.headers);

[AnrDaemon]

See #46