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Track source IP address in an efficient manner to make sure the same cookie will not be sent from different source IP addresses.
joelpurra
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May 13, 2021
- Workaround for breaking change in upstream getdns versions after `getdns` v1.6.0; `GETDNS_RCODE_COOKIE` constant was renamed to `GETDNS_RCODE_BADCOOKIE`. - The renamed constant has not yet been included in an upstream `getdns` released, so this is a preemptive measure. Fixes getdnsapi#38. See - getdnsapi#38 - https://github.com/getdnsapi/getdns - getdnsapi/getdns#471 - getdnsapi/getdns@5c79e2c --- To test using latest `getdns` on Ubuntu 21.04. ```shell sudo apt install libunbound-dev libidn2-dev libssl-dev libevent-dev libuv1-dev libev-dev check git clone 'git@github.com:getdnsapi/getdns.git' cd getdns mkdir build cd build cmake .. make ``` Rebuild `getdns-node` targeting the newly built version (without installing it). ```shell LIBRARY_PATH="/the/path/to/your/getdns/build" CPLUS_INCLUDE_PATH="/the/path/to/your/getdns/build" npm run --silent rebuild ``` Current `getdns` commit on the `develop` branch is `291e0018817269b72c7cbd6c3e531acba95f563f`. - https://github.com/getdnsapi/getdns/tree/develop - getdnsapi/getdns@291e001
This was referenced May 13, 2021
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Privacy aware DNS Cookies following directions in: https://tools.ietf.org/html/draft-ietf-dnsop-server-cookies-02.
You can test against
185.49.141.38and2a04:b900:0:100::38which has a resolver that will answer when a valid DNS Cookie was provided.Still TODO before merge, a test package testing the feature.