mirror of https://github.com/coredns/coredns.git synced 2025-09-21 21:51:19 +02:00

History

Miek Gieben 53ac25d1c3 Add middleware/erratic (#471 )

This middleware allows playing with responses. Only one type is
implemented: it allows you to drop queries. I.e. withhold the response
from the client.

2017-01-06 09:42:30 +00:00

erratic_test.go

Add middleware/erratic (#471 )

2017-01-06 09:42:30 +00:00

erratic.go

Add middleware/erratic (#471 )

2017-01-06 09:42:30 +00:00

README.md

Add middleware/erratic (#471 )

2017-01-06 09:42:30 +00:00

setup_test.go

Add middleware/erratic (#471 )

2017-01-06 09:42:30 +00:00

setup.go

Add middleware/erratic (#471 )

2017-01-06 09:42:30 +00:00

README.md

erratic

erratic is a middleware useful for testing client behavior. It returns a static response to all queries, but the responses can be delayed by a random amount of time or dropped all together, i.e. no answer at all.

._<transport>.qname. 0 IN SRV 0 0 <port> .

The erratic middleware will respond to every A or AAAA query. For any other type it will return a SERVFAIL response. The reply for A will return 192.0.2.53 (see RFC 5737), for AAAA it returns 2001:DB8::53 (see RFC 3849).

Syntax

erratic {
    drop AMOUNT
}

AMOUNT drop 1 per AMOUNT of the queries, the default is 2.

Examples

.:53 {
    erratic {
        drop 3
    }
}

Or even shorter if the defaults suits you:

. {
    erratic
}

Bugs

Delaying answers is not implemented.