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uplex-varnish
unique-xids
Commits
160b2e08
Commit
160b2e08
authored
Feb 19, 2013
by
Per Buer
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Split the examples into sep files
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962f512a
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vcl-example1-manipulating-headers.rst
doc/sphinx/users-guide/vcl-example1-manipulating-headers.rst
+21
-0
vcl-example2-manipulating-responses.rst
...phinx/users-guide/vcl-example2-manipulating-responses.rst
+19
-0
vcl-example3-acls.rst
doc/sphinx/users-guide/vcl-example3-acls.rst
+34
-0
vcl-examples.rst
doc/sphinx/users-guide/vcl-examples.rst
+8
-59
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doc/sphinx/users-guide/vcl-example1-manipulating-headers.rst
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160b2e08
Manipulating request headers in VCL
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lets say we want to remove the cookie for all objects in the /images
directory of our web server::
sub vcl_recv {
if (req.url ~ "^/images") {
unset req.http.cookie;
}
}
Now, when the request is handled to the backend server there will be
no cookie header. The interesting line is the one with the
if-statement. It matches the URL, taken from the request object, and
matches it against the regular expression. Note the match operator. If
it matches the Cookie: header of the request is unset (deleted).
doc/sphinx/users-guide/vcl-example2-manipulating-responses.rst
0 → 100644
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160b2e08
Altering the backend response
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Here we override the TTL of a object comming from the backend if it
matches certain criteria::
sub vcl_fetch {
if (req.url ~ "\.(png|gif|jpg)$") {
unset beresp.http.set-cookie;
set beresp.ttl = 1h;
}
}
.. XXX ref hit-for-pass
We also remove any Set-Cookie headers in order to avoid a hit-for-pass
object to be created.
doc/sphinx/users-guide/vcl-example3-acls.rst
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160b2e08
ACLs
~~~~
You create a named access control list with the *acl* keyword. You can match
the IP address of the client against an ACL with the match operator.::
# Who is allowed to purge....
acl local {
"localhost";
"192.168.1.0"/24; /* and everyone on the local network */
! "192.168.1.23"; /* except for the dialin router */
}
sub vcl_recv {
if (req.method == "PURGE") {
if (client.ip ~ local) {
return(lookup);
}
}
}
sub vcl_hit {
if (req.method == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
}
}
sub vcl_miss {
if (req.method == "PURGE") {
error 404 "Not in cache.";
}
}
doc/sphinx/users-guide/vcl-examples.rst
View file @
160b2e08
Example 1 - manipulating headers
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lets say we want to remove the cookie for all objects in the /imag
es
directory of our web server::
VCL Exampl
es
------------
sub vcl_recv {
if (req.url ~ "^/images") {
unset req.http.cookie;
}
}
These are a short collection of examples that showcase some of the
capabilites of the VCL language.
Now, when the request is handled to the backend server there will be
no cookie header. The interesting line is the one with the
if-statement. It matches the URL, taken from the request object, and
matches it against the regular expression. Note the match operator. If
it matches the Cookie: header of the request is unset (deleted).
.. toctree::
Example 2 - manipulating beresp
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vcl-example1-manipulating-headers
vcl-example2-manipulating-responses
vcl-example3-acls
Here we override the TTL of a object comming from the backend if it
matches certain criteria::
sub vcl_fetch {
if (req.url ~ "\.(png|gif|jpg)$") {
unset beresp.http.set-cookie;
set beresp.ttl = 1h;
}
}
Example 3 - ACLs
~~~~~~~~~~~~~~~~
You create a named access control list with the *acl* keyword. You can match
the IP address of the client against an ACL with the match operator.::
# Who is allowed to purge....
acl local {
"localhost";
"192.168.1.0"/24; /* and everyone on the local network */
! "192.168.1.23"; /* except for the dialin router */
}
sub vcl_recv {
if (req.method == "PURGE") {
if (client.ip ~ local) {
return(lookup);
}
}
}
sub vcl_hit {
if (req.method == "PURGE") {
set obj.ttl = 0s;
error 200 "Purged.";
}
}
sub vcl_miss {
if (req.method == "PURGE") {
error 404 "Not in cache.";
}
}
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