<s>
WebDAV	B-Protocol
(	O
Web	O
Distributed	O
Authoring	O
and	O
Versioning	B-Architecture
)	O
is	O
a	O
set	O
of	O
extensions	O
to	O
the	O
Hypertext	B-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
HTTP	B-Protocol
)	O
,	O
which	O
allows	O
user	B-Protocol
agents	I-Protocol
to	O
collaboratively	O
author	O
contents	O
directly	O
in	O
an	O
HTTP	B-Protocol
web	O
server	B-Application
by	O
providing	O
facilities	O
for	O
concurrency	B-Operating_System
control	I-Operating_System
and	O
namespace	O
operations	O
,	O
thus	O
allowing	O
Web	O
to	O
be	O
viewed	O
as	O
a	O
writeable	O
,	O
collaborative	O
medium	B-General_Concept
and	O
not	O
just	O
a	O
read-only	O
medium	B-General_Concept
.	O
</s>
<s>
WebDAV	B-Protocol
is	O
defined	O
in	O
by	O
a	O
working	O
group	O
of	O
the	O
Internet	O
Engineering	O
Task	O
Force	O
(	O
IETF	O
)	O
.	O
</s>
<s>
The	O
WebDAV	B-Protocol
protocol	O
provides	O
a	O
framework	O
for	O
users	O
to	O
create	O
,	O
change	O
and	O
move	O
documents	O
on	O
a	O
server	B-Application
.	O
</s>
<s>
Namespace	O
management	O
deals	O
with	O
the	O
ability	O
to	O
copy	O
and	O
move	O
web	O
pages	O
within	O
a	O
server	B-Application
's	O
namespace	O
.	O
</s>
<s>
Lastly	O
,	O
overwrite	O
protection	O
handles	O
aspects	O
related	O
to	O
the	O
locking	B-Operating_System
of	O
files	O
.	O
</s>
<s>
It	O
takes	O
advantage	O
of	O
existing	O
technologies	O
such	O
as	O
Transport	B-Protocol
Layer	I-Protocol
Security	I-Protocol
,	O
digest	B-Protocol
access	I-Protocol
authentication	I-Protocol
or	O
XML	B-Protocol
to	O
satisfy	O
those	O
requirements	O
.	O
</s>
<s>
Many	O
modern	O
operating	B-General_Concept
systems	I-General_Concept
provide	O
built-in	O
client-side	B-Operating_System
support	O
for	O
WebDAV	B-Protocol
.	O
</s>
<s>
WebDAV	B-Protocol
began	O
in	O
1996	O
when	O
Jim	O
Whitehead	O
worked	O
with	O
the	O
World	O
Wide	O
Web	O
Consortium	O
(	O
W3C	O
)	O
to	O
host	O
two	O
meetings	O
to	O
discuss	O
the	O
problem	O
of	O
distributed	O
authoring	O
on	O
the	O
World	O
Wide	O
Web	O
with	O
interested	O
people	O
.	O
</s>
<s>
Tim	O
Berners-Lee	O
'	O
s	O
original	O
vision	O
of	O
the	O
Web	O
involved	O
a	O
medium	B-General_Concept
for	O
both	O
reading	O
and	O
writing	O
.	O
</s>
<s>
In	O
fact	O
,	O
Berners-Lee	O
'	O
s	O
first	O
web	B-Application
browser	I-Application
,	O
called	O
WorldWideWeb	B-Language
,	O
could	O
both	O
view	O
and	O
edit	O
web	O
pages	O
;	O
but	O
,	O
as	O
the	O
Web	O
grew	O
,	O
it	O
became	O
a	O
read-only	O
medium	B-General_Concept
for	O
most	O
users	O
.	O
</s>
<s>
The	O
meetings	O
resulted	O
in	O
the	O
formation	O
of	O
an	O
IETF	O
working	O
group	O
because	O
the	O
new	O
effort	O
would	O
lead	O
to	O
extensions	O
to	O
HTTP	B-Protocol
,	O
which	O
the	O
IETF	O
had	O
started	O
to	O
standardize	O
.	O
</s>
<s>
As	O
work	O
began	O
on	O
the	O
protocol	O
,	O
it	O
became	O
clear	O
that	O
handling	O
both	O
distributed	O
authoring	O
and	O
versioning	B-Architecture
together	O
would	O
involve	O
too	O
much	O
work	O
and	O
that	O
the	O
tasks	O
would	O
have	O
to	O
be	O
separated	O
.	O
</s>
<s>
The	O
WebDAV	B-Protocol
group	O
focused	O
on	O
distributed	O
authoring	O
,	O
and	O
left	O
versioning	B-Architecture
for	O
the	O
future	O
.	O
</s>
<s>
(	O
The	O
Delta-V	B-Protocol
extension	O
added	O
versioning	B-Architecture
later	O
see	O
the	O
Extensions	O
section	O
below	O
.	O
)	O
</s>
<s>
The	O
WebDAV	B-Protocol
working	O
group	O
concluded	O
its	O
work	O
in	O
March	O
2007	O
,	O
after	O
the	O
Internet	O
Engineering	O
Steering	O
Group	O
(	O
IESG	O
)	O
accepted	O
an	O
incremental	O
update	O
to	O
.	O
</s>
<s>
WebDAV	B-Protocol
extends	O
the	O
set	O
of	O
standard	O
HTTP	B-Protocol
verbs	O
and	O
headers	O
allowed	O
for	O
request	O
methods	O
.	O
</s>
<s>
Verb	O
Action	O
COPY	O
copy	O
a	O
resource	O
from	O
one	O
uniform	B-Protocol
resource	I-Protocol
identifier	I-Protocol
(	O
URI	B-Protocol
)	O
to	O
another	O
LOCK	B-Operating_System
put	O
a	O
lock	B-Operating_System
on	O
a	O
resource	O
.	O
</s>
<s>
WebDAV	B-Protocol
supports	O
both	O
shared	O
and	O
exclusive	O
locks	O
.	O
</s>
<s>
MKCOL	O
create	O
collections	O
(	O
also	O
known	O
as	O
a	O
directory	O
)	O
MOVE	O
move	O
a	O
resource	O
from	O
one	O
URI	B-Protocol
to	O
another	O
PROPFIND	B-Protocol
retrieve	O
properties	O
,	O
stored	O
as	O
XML	B-Protocol
,	O
from	O
a	O
web	O
resource	O
.	O
</s>
<s>
It	O
is	O
also	O
overloaded	B-Language
to	O
allow	O
one	O
to	O
retrieve	O
the	O
collection	O
structure	O
(	O
also	O
known	O
as	O
directory	O
hierarchy	O
)	O
of	O
a	O
remote	O
system	O
.	O
</s>
<s>
The	O
properties	O
of	O
WebDAV	B-Protocol
protocol	O
are	O
name	B-Application
–	I-Application
value	I-Application
pair	I-Application
,	O
in	O
which	O
a	O
"	O
name	O
"	O
is	O
a	O
Uniform	B-Protocol
Resource	I-Protocol
Identifier	I-Protocol
(	O
URI	B-Protocol
)	O
and	O
the	O
"	O
values	O
"	O
are	O
expressed	O
through	O
XML	B-Protocol
elements	O
.	O
</s>
<s>
Furthermore	O
,	O
the	O
methods	O
to	O
handle	O
the	O
properties	O
are	O
PROPFIND	B-Protocol
and	O
PROPPATCH	O
.	O
</s>
<s>
iceWarp	O
provides	O
Webdav	B-Protocol
inbuilt	O
functionality	O
to	O
its	O
web	B-Application
client	I-Application
and	O
Desktop	O
Applications	O
,	O
*	O
DAV	O
support	O
:	O
CalDAV	B-Protocol
,	O
CardDAV	B-Protocol
,	O
Web	O
Documents	O
and	O
collaborative	O
editing	O
.	O
</s>
<s>
Apache	B-Application
HTTP	I-Application
Server	I-Application
provides	O
WebDAV	B-Protocol
modules	O
based	O
on	O
both	O
davfs	B-Application
and	O
Apache	B-Application
Subversion	I-Application
(	O
svn	B-Application
)	O
.	O
</s>
<s>
Caddy	B-Language
has	O
an	O
optional	O
WebDAV	B-Protocol
module	O
.	O
</s>
<s>
EGroupware	B-Protocol
,	O
a	O
Groupware	B-Application
with	O
full	O
*	O
DAV	O
support	O
:	O
CalDAV	B-Protocol
,	O
CardDAV	B-Protocol
and	O
WebDAV	B-Protocol
for	O
file	O
manager	O
.	O
</s>
<s>
lighttpd	B-Protocol
has	O
an	O
optional	O
WebDAV	B-Protocol
module	O
.	O
</s>
<s>
Mailfence	B-Application
offers	O
WebDAV	B-Protocol
support	O
through	O
a	O
virtual	O
drive+	O
you	O
can	O
connect	O
external	O
drives	O
to	O
Mailfence	B-Application
Documents	O
.	O
</s>
<s>
Nextcloud	B-General_Concept
is	O
a	O
fork	O
of	O
ownCloud	O
,	O
and	O
therefore	O
also	O
offers	O
full	O
WebDAV	B-Protocol
support	O
.	O
</s>
<s>
Nginx	B-Operating_System
has	O
a	O
very	O
limited	O
optional	O
WebDAV	B-Protocol
module	O
(	O
Note	O
:	O
full	O
WebDAV	B-Protocol
support	O
for	O
IIS	O
7	O
was	O
provided	O
through	O
a	O
separate	O
download	O
that	O
was	O
discontinued	O
in	O
July	O
2021	O
.	O
</s>
<s>
Rclone	B-General_Concept
includes	O
support	O
for	O
WebDAV	B-Protocol
through	O
the	O
serve	O
webdav	B-Protocol
command	O
.	O
</s>
<s>
The	O
WebDAV	B-Protocol
working	O
group	O
produced	O
several	O
works	O
:	O
</s>
<s>
For	O
versioning	B-Architecture
,	O
the	O
Delta-V	B-Protocol
protocol	O
under	O
the	O
Web	O
Versioning	B-Architecture
and	O
Configuration	O
Management	O
working	O
group	O
adds	O
resource	O
revision	B-Architecture
tracking	I-Architecture
,	O
published	O
in	O
.	O
</s>
<s>
The	O
WebDAV	B-Protocol
Search	O
specification	O
attempts	O
to	O
pick	O
up	O
where	O
the	O
working	O
group	O
left	O
off	O
,	O
and	O
was	O
published	O
as	O
in	O
November	O
2008	O
.	O
</s>
<s>
For	O
calendaring	O
,	O
CalDAV	B-Protocol
is	O
a	O
protocol	O
allowing	O
calendar	O
access	O
via	O
WebDAV	B-Protocol
.	O
</s>
<s>
CalDAV	B-Protocol
models	O
calendar	O
events	O
as	O
HTTP	B-Protocol
resources	O
in	O
iCalendar	O
format	O
,	O
and	O
models	O
calendars	O
containing	O
events	O
as	O
WebDAV	B-Protocol
collections	O
.	O
</s>
<s>
For	O
groupware	B-Application
,	O
GroupDAV	O
is	O
a	O
variant	O
of	O
WebDAV	B-Protocol
which	O
allows	O
client/server	B-Operating_System
groupware	B-Application
systems	O
to	O
store	O
and	O
fetch	O
objects	O
such	O
as	O
calendar	O
items	O
and	O
address	O
book	O
entries	O
instead	O
of	O
web	O
pages	O
.	O
</s>
<s>
For	O
MS	O
Exchange	O
interoperability	O
,	O
WebDAV	B-Protocol
can	O
be	O
used	O
for	O
reading/updating/deleting	O
items	O
in	O
a	O
mailbox	O
or	O
public	O
folder	O
.	O
</s>
<s>
WebDAV	B-Protocol
for	O
Exchange	O
has	O
been	O
extended	O
by	O
Microsoft	O
to	O
accommodate	O
working	O
with	O
messaging	O
data	O
.	O
</s>
<s>
Exchange	O
Server	B-Application
version	O
2000	O
,	O
2003	O
,	O
and	O
2007	O
support	O
WebDAV	B-Protocol
.	O
</s>
<s>
However	O
,	O
WebDAV	B-Protocol
support	O
has	O
been	O
discontinued	O
in	O
Exchange	O
2010	O
in	O
favor	O
of	O
Exchange	O
Web	O
Services	O
(	O
EWS	O
)	O
,	O
a	O
SOAP/XML	O
based	O
API	B-General_Concept
.	O
</s>
<s>
As	O
part	O
of	O
the	O
Windows	O
Server	B-Application
Protocols	O
(	O
WSPP	O
)	O
documentation	O
set	O
,	O
Microsoft	O
published	O
the	O
following	O
protocol	O
documents	O
detailing	O
extensions	O
to	O
WebDAV	B-Protocol
:	O
</s>
<s>
 [ MS-WDVME ] 	O
:	O
Web	O
Distributed	O
Authoring	O
and	O
Versioning	B-Architecture
(	O
WebDAV	B-Protocol
)	O
Protocol	O
:	O
Microsoft	O
Extensions	O
.	O
</s>
<s>
These	O
extensions	O
introduce	O
new	O
functionality	O
into	O
WebDAV	B-Protocol
,	O
optimize	O
processing	O
,	O
and	O
eliminate	O
the	O
need	O
for	O
special-case	O
processing	O
.	O
</s>
<s>
 [ MS-WDV ] 	O
:	O
Web	O
Distributed	O
Authoring	O
and	O
Versioning	B-Architecture
(	O
WebDAV	B-Protocol
)	O
Protocol	O
:	O
Client	O
Extensions	O
.	O
</s>
<s>
The	O
client	O
extensions	O
in	O
this	O
specification	O
extend	O
the	O
WebDAV	B-Protocol
Protocol	O
by	O
introducing	O
new	O
headers	O
that	O
both	O
enable	O
the	O
file	O
types	O
that	O
are	O
not	O
currently	O
manageable	O
and	O
optimize	O
protocol	O
interactions	O
for	O
file	O
system	O
clients	O
.	O
</s>
<s>
These	O
extensions	O
do	O
not	O
introduce	O
new	O
functionality	O
into	O
the	O
WebDAV	B-Protocol
Protocol	O
,	O
but	O
instead	O
optimize	O
processing	O
and	O
eliminate	O
the	O
need	O
for	O
special-case	O
processing	O
.	O
</s>
<s>
 [ MS-WDVSE ] 	O
:	O
Web	O
Distributed	O
Authoring	O
and	O
Versioning	B-Architecture
(	O
WebDAV	B-Protocol
)	O
Protocol	O
:	O
Server	B-Application
Extensions	O
.	O
</s>
<s>
The	O
server	B-Application
extensions	O
in	O
this	O
specification	O
extend	O
WebDAV	B-Protocol
by	O
introducing	O
new	O
HTTP	B-Protocol
request	O
and	O
response	O
headers	O
that	O
both	O
enable	O
the	O
file	O
types	O
that	O
are	O
not	O
currently	O
manageable	O
and	O
optimize	O
protocol	O
interactions	O
for	O
file	O
system	O
clients	O
.	O
</s>
<s>
This	O
specification	O
also	O
introduces	O
a	O
new	O
WebDAV	B-Protocol
method	O
that	O
is	O
used	O
to	O
send	O
search	O
queries	O
to	O
disparate	O
search	O
providers	O
.	O
</s>
<s>
 [ MS-WEBDAVE ] 	O
:	O
Web	O
Distributed	O
Authoring	O
and	O
Versioning	B-Architecture
Error	O
Extensions	O
Protocol	O
Specification	O
.	O
</s>
<s>
This	O
SharePoint	O
Front-End	O
Protocol	O
describes	O
extended	O
error	O
codes	O
and	O
extended	O
error	O
handling	O
mechanism	O
specified	O
in	O
 [ MS-WDV ] 	O
to	O
enable	O
compliant	O
servers	O
to	O
report	O
error	O
condition	O
details	O
on	O
a	O
server	B-Application
response	O
.	O
</s>
<s>
File	B-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
FTP	B-Protocol
)	O
,	O
a	O
simple	O
and	O
widely	O
adopted	O
network	O
protocol	O
based	O
on	O
IP	B-Protocol
,	O
allows	O
users	O
to	O
transfer	O
files	O
between	O
network	O
hosts	O
.	O
</s>
<s>
FTPS	B-Protocol
extends	O
FTP	B-Protocol
for	O
secure	O
traffic	O
.	O
</s>
<s>
SSH	B-Protocol
File	I-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
SFTP	O
)	O
,	O
an	O
extension	O
of	O
the	O
Secure	O
Shell	O
protocol	O
(	O
SSH	O
)	O
version	O
2.0	O
,	O
provides	O
secure	O
file-transfer	O
capability	O
;	O
and	O
scp	O
,	O
a	O
form	O
of	O
SFTP	O
that	O
runs	O
as	O
a	O
single	O
command	O
similar	O
to	O
a	O
regular	O
cp	O
(	O
copy	O
)	O
command	O
in	O
the	O
shell	O
.	O
</s>
<s>
Rsync	B-Application
,	O
a	O
protocol	O
and	O
a	O
command	O
similar	O
to	O
scp	O
,	O
that	O
can	O
also	O
skip	O
rewriting	O
identical	O
files	O
and	O
portions	O
of	O
files	O
,	O
or	O
skip	O
newer	O
files	O
,	O
etc	O
.	O
</s>
<s>
A	O
distributed	B-Protocol
file	I-Protocol
system	I-Protocol
such	O
as	O
the	O
Server	B-Operating_System
Message	I-Operating_System
Block	I-Operating_System
(	O
SMB	O
)	O
protocol	O
allows	O
Microsoft	B-Application
Windows	I-Application
and	O
open-source	O
Samba	B-Language
clients	O
to	O
access	O
and	O
manage	O
files	O
and	O
folders	O
remotely	O
on	O
a	O
suitable	O
file	B-Application
server	I-Application
.	O
</s>
<s>
Commonly	O
used	O
for	O
multimedia	O
streaming	O
over	O
ethernet	O
and	O
widely	O
supported	O
by	O
Smart	B-Device
TVs	I-Device
.	O
</s>
<s>
AtomPub	B-Application
,	O
an	O
HTTP-based	O
protocol	O
for	O
creating	O
and	O
updating	O
web	O
resources	O
,	O
can	O
be	O
used	O
for	O
some	O
of	O
the	O
use	O
cases	O
of	O
WebDAV	B-Protocol
.	O
</s>
<s>
It	O
is	O
based	O
on	O
standard	O
HTTP	B-Protocol
verbs	O
with	O
standardized	O
collection	O
resources	O
that	O
behave	O
somewhat	O
like	O
the	O
WebDAV	B-Protocol
model	O
of	O
directories	O
.	O
</s>
<s>
Wiki	B-Protocol
software	I-Protocol
,	O
such	O
as	O
MediaWiki	B-Application
.	O
</s>
<s>
Linked	O
Data	O
Platform	O
(	O
LDP	O
)	O
,	O
a	O
Linked	O
Data	O
specification	O
defining	O
a	O
set	O
of	O
integration	O
patterns	O
for	O
building	O
RESTful	O
HTTP	B-Protocol
services	O
that	O
are	O
capable	O
of	O
read-write	O
of	O
RDF	O
data	O
.	O
</s>
