mirror of
https://github.com/monero-project/monero.git
synced 2024-12-15 21:06:32 +02:00
64 lines
1.6 KiB
ReStructuredText
64 lines
1.6 KiB
ReStructuredText
Response modification
|
|
=====================
|
|
|
|
This example shows how to modify the response produced by the ``iterator`` module.
|
|
|
|
As soon as the iterator module returns the response, we :
|
|
|
|
1. invalidate the data in cache
|
|
2. modify the response *TTL*
|
|
3. rewrite the data in cache
|
|
4. return modified packet
|
|
|
|
Note that the steps 1 and 3 are neccessary only in case, the python module is the first module in the processing chain.
|
|
In other cases, the validator module guarantees updating data which are produced by iterator module.
|
|
|
|
Complete source code
|
|
--------------------
|
|
|
|
.. literalinclude:: ../../examples/resmod.py
|
|
:language: python
|
|
|
|
Testing
|
|
-------
|
|
|
|
Run Unbound server:
|
|
|
|
``root@localhost>unbound -dv -c ./test-resmod.conf``
|
|
|
|
Issue a query for name ending with "nic.cz."
|
|
|
|
``>>>dig A @127.0.0.1 www.nic.cz``
|
|
|
|
::
|
|
|
|
;; global options: printcmd
|
|
;; Got answer:
|
|
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48831
|
|
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 5
|
|
|
|
;; QUESTION SECTION:
|
|
;www.nic.cz. IN A
|
|
|
|
;; ANSWER SECTION:
|
|
www.nic.cz. 10 IN A 217.31.205.50
|
|
|
|
;; AUTHORITY SECTION:
|
|
nic.cz. 10 IN NS e.ns.nic.cz.
|
|
nic.cz. 10 IN NS a.ns.nic.cz.
|
|
nic.cz. 10 IN NS c.ns.nic.cz.
|
|
|
|
;; ADDITIONAL SECTION:
|
|
a.ns.nic.cz. 10 IN A 217.31.205.180
|
|
a.ns.nic.cz. 10 IN AAAA 2001:1488:dada:176::180
|
|
c.ns.nic.cz. 10 IN A 195.66.241.202
|
|
c.ns.nic.cz. 10 IN AAAA 2a01:40:1000::2
|
|
e.ns.nic.cz. 10 IN A 194.146.105.38
|
|
|
|
;; Query time: 166 msec
|
|
;; SERVER: 127.0.0.1#53(127.0.0.1)
|
|
;; WHEN: Mon Jan 02 13:39:43 2009
|
|
;; MSG SIZE rcvd: 199
|
|
|
|
As you can see, TTL of all the records is set to 10.
|