898b1ef316
* server: actually scrub response
Did all the worked, hooked it up wrongly :(
This also needs test, but those are hard(er) because we only receive
packets after they have been decoded; i.e. we never see the wirefmt.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Add tests
Add a test for checking is compression pointers are set in the packet.
This also adds an undocumented 'large' feature to the erratic plugin to
send large responses that should be compressed.
Commenting the Scrub out in server results in:
=== RUN TestCompressScrub
--- FAIL: TestCompressScrub (0.00s)
compression_scrub_test.go:41: Expected returned packet to be < 512, got 839
FAIL
exit status 1
FAIL github.com/coredns/coredns/test 0.036s
Actually checking the size might be easier, but lets be thorough here
and check the pointers them selves.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Fix tests
Signed-off-by: Miek Gieben <miek@miek.nl>
* plugin erratic: fix e.large
always put an rr in the reply, fix e.large in erractic and add test to
check for it.
Signed-off-by: Miek Gieben <miek@miek.nl>
119 lines
2.3 KiB
Go
119 lines
2.3 KiB
Go
package erratic
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import (
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"fmt"
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"strconv"
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"time"
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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"github.com/mholt/caddy"
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)
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func init() {
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caddy.RegisterPlugin("erratic", caddy.Plugin{
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ServerType: "dns",
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Action: setup,
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})
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}
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func setup(c *caddy.Controller) error {
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e, err := parseErratic(c)
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if err != nil {
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return plugin.Error("erratic", err)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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return e
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})
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return nil
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}
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func parseErratic(c *caddy.Controller) (*Erratic, error) {
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e := &Erratic{drop: 2}
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drop := false // true if we've seen the drop keyword
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for c.Next() { // 'erratic'
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for c.NextBlock() {
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switch c.Val() {
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case "drop":
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args := c.RemainingArgs()
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if len(args) > 1 {
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return nil, c.ArgErr()
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}
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if len(args) == 0 {
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continue
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}
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amount, err := strconv.ParseInt(args[0], 10, 32)
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if err != nil {
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return nil, err
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}
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if amount < 0 {
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return nil, fmt.Errorf("illegal amount value given %q", args[0])
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}
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e.drop = uint64(amount)
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drop = true
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case "delay":
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args := c.RemainingArgs()
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if len(args) > 2 {
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return nil, c.ArgErr()
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}
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// Defaults.
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e.delay = 2
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e.duration = 100 * time.Millisecond
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if len(args) == 0 {
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continue
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}
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amount, err := strconv.ParseInt(args[0], 10, 32)
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if err != nil {
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return nil, err
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}
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if amount < 0 {
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return nil, fmt.Errorf("illegal amount value given %q", args[0])
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}
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e.delay = uint64(amount)
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if len(args) > 1 {
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duration, err := time.ParseDuration(args[1])
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if err != nil {
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return nil, err
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}
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e.duration = duration
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}
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case "truncate":
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args := c.RemainingArgs()
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if len(args) > 1 {
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return nil, c.ArgErr()
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}
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if len(args) == 0 {
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continue
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}
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amount, err := strconv.ParseInt(args[0], 10, 32)
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if err != nil {
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return nil, err
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}
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if amount < 0 {
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return nil, fmt.Errorf("illegal amount value given %q", args[0])
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}
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e.truncate = uint64(amount)
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case "large":
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e.large = true
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default:
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return nil, c.Errf("unknown property '%s'", c.Val())
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}
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}
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}
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if (e.delay > 0 || e.truncate > 0) && !drop { // delay is set, but we've haven't seen a drop keyword, remove default drop stuff
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e.drop = 0
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}
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return e, nil
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}
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