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uplex-varnish
unique-xids
Commits
b26529dc
Commit
b26529dc
authored
Aug 10, 2011
by
Poul-Henning Kamp
Committed by
Tollef Fog Heen
Aug 17, 2011
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Fiddle the "RFC" SLT_TTL record into submission.
Document the TTL record.
parent
f9002407
Changes
2
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Showing
2 changed files
with
45 additions
and
15 deletions
+45
-15
rfc2616.c
bin/varnishd/rfc2616.c
+12
-13
vsl.rst
doc/sphinx/reference/vsl.rst
+33
-2
No files found.
bin/varnishd/rfc2616.c
View file @
b26529dc
...
...
@@ -89,6 +89,16 @@ RFC2616_Ttl(const struct sess *sp)
* We do not support ranges yet, so 206 is out.
*/
if
(
http_GetHdr
(
hp
,
H_Age
,
&
p
))
{
age
=
strtoul
(
p
,
NULL
,
0
);
sp
->
wrk
->
exp
.
age
=
age
;
}
if
(
http_GetHdr
(
hp
,
H_Expires
,
&
p
))
h_expires
=
TIM_parse
(
p
);
if
(
http_GetHdr
(
hp
,
H_Date
,
&
p
))
h_date
=
TIM_parse
(
p
);
switch
(
sp
->
err_code
)
{
default:
sp
->
wrk
->
exp
.
ttl
=
-
1
.;
...
...
@@ -114,10 +124,6 @@ RFC2616_Ttl(const struct sess *sp)
max_age
=
0
;
else
max_age
=
strtoul
(
p
,
NULL
,
0
);
if
(
http_GetHdr
(
hp
,
H_Age
,
&
p
))
{
age
=
strtoul
(
p
,
NULL
,
0
);
sp
->
wrk
->
exp
.
age
=
age
;
}
if
(
age
>
max_age
)
ttl
=
0
;
...
...
@@ -126,17 +132,10 @@ RFC2616_Ttl(const struct sess *sp)
break
;
}
/* Next look for absolute specifications from backend */
if
(
http_GetHdr
(
hp
,
H_Expires
,
&
p
))
h_expires
=
TIM_parse
(
p
);
/* No expire header, fall back to default */
if
(
h_expires
==
0
)
break
;
if
(
http_GetHdr
(
hp
,
H_Date
,
&
p
))
h_date
=
TIM_parse
(
p
);
/* If backend told us it is expired already, don't cache. */
if
(
h_expires
<
h_date
)
{
...
...
@@ -169,8 +168,8 @@ RFC2616_Ttl(const struct sess *sp)
/* calculated TTL, Our time, Date, Expires, max-age, age */
WSP
(
sp
,
SLT_TTL
,
"%u RFC %.0f %.0f %.0f %.0f %.0f %.0f %.0f %u
%u
"
,
sp
->
xid
,
ttl
,
-
1
.
-
1
.,
sp
->
wrk
->
exp
.
entered
,
sp
->
wrk
->
exp
.
age
,
"%u RFC %.0f %.0f %.0f %.0f %.0f %.0f %.0f %u"
,
sp
->
xid
,
ttl
,
-
1
.
,
-
1
.,
sp
->
wrk
->
exp
.
entered
,
sp
->
wrk
->
exp
.
age
,
h_date
,
h_expires
,
max_age
);
return
(
ttl
);
...
...
doc/sphinx/reference/vsl.rst
View file @
b26529dc
...
...
@@ -4,6 +4,38 @@
Shared Memory Logging
=====================
TTL records
~~~~~~~~~~~
A TTL record is emitted whenever the ttl, grace or keep values for an
object is set.
The format is::
%u %s %d %d %d %d %d [ %d %u %u ]
| | | | | | | | | |
| | | | | | | | | +- Max-Age from Cache-Control header
| | | | | | | | +---- Expires header
| | | | | | | +------- Date header
| | | | | | +------------ Age (incl Age: header value)
| | | | | +--------------- Reference time for TTL
| | | | +------------------ Keep
| | | +--------------------- Grace
| | +------------------------ TTL
| +--------------------------- "RFC" or "VCL"
+------------------------------ object XID
The last three fields are only present in "RFC" headers.
Examples::
1001 RFC 19 -1 -1 1312966109 4 0 0 23
1001 VCL 10 -1 -1 1312966109 4
1001 VCL 7 -1 -1 1312966111 6
1001 VCL 7 120 -1 1312966111 6
1001 VCL 7 120 3600 1312966111 6
1001 VCL 12 120 3600 1312966113 8
Gzip records
~~~~~~~~~~~~
...
...
@@ -14,7 +46,6 @@ gunziped, will run into many of these.
The format is::
%c %c %c %d %d %d %d %d
| | | | | | | |
| | | | | | | +- Bit length of compressed data
...
...
@@ -26,7 +57,7 @@ The format is::
| +------------------- 'F' = Fetch, 'D' = Deliver
+---------------------- 'G' = Gzip, 'U' = Gunzip, 'u' = Gunzip-test
Which in practice could look like
::
Examples
::
U F E 182 159 80 80 1392
G F E 159 173 80 1304 1314
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