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Allow to disable keep-alive for the targets not supporting it properly (#1049)

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* Allow to disable keep-alive for the targets not supporting it properly

* Add changelog entry
This commit is contained in:
Alex Samorukov 2025-08-29 16:17:03 +02:00 • committed by GitHub
parent 44264981b5
commit 582181f9b9
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GPG key ID: B5690EEEBB952194
2 changed files with 9 additions and 2 deletions
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9
cmd/anubis/main.go
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@ -69,6 +69,7 @@ var (
targetSNI = flag.String("target-sni", "", "if set, the value of the TLS handshake hostname when forwarding requests to the target")
targetHost = flag.String("target-host", "", "if set, the value of the Host header when forwarding requests to the target")
targetInsecureSkipVerify = flag.Bool("target-insecure-skip-verify", false, "if true, skips TLS validation for the backend")
targetDisableKeepAlive = flag.Bool("target-disable-keepalive", false, "if true, disables HTTP keep-alive for the backend")
healthcheck = flag.Bool("healthcheck", false, "run a health check against Anubis")
useRemoteAddress = flag.Bool("use-remote-address", false, "read the client's IP address from the network request, useful for debugging and running Anubis on bare metal")
debugBenchmarkJS = flag.Bool("debug-benchmark-js", false, "respond to every request with a challenge for benchmarking hashrate")
@ -188,7 +189,7 @@ func setupListener(network string, address string) (net.Listener, string) {
return listener, formattedAddress
}
func makeReverseProxy(target string, targetSNI string, targetHost string, insecureSkipVerify bool) (http.Handler, error) {
func makeReverseProxy(target string, targetSNI string, targetHost string, insecureSkipVerify bool, targetDisableKeepAlive bool) (http.Handler, error) {
targetUri, err := url.Parse(target)
if err != nil {
return nil, fmt.Errorf("failed to parse target URL: %w", err)
@ -196,6 +197,10 @@ func makeReverseProxy(target string, targetSNI string, targetHost string, insecu
transport := http.DefaultTransport.(*http.Transport).Clone()
if targetDisableKeepAlive {
transport.DisableKeepAlives = true
}
// https://github.com/oauth2-proxy/oauth2-proxy/blob/4e2100a2879ef06aea1411790327019c1a09217c/pkg/upstream/http.go#L124
if targetUri.Scheme == "unix" {
// clean path up so we don't use the socket path in proxied requests
@ -281,7 +286,7 @@ func main() {
// when using anubis via Systemd and environment variables, then it is not possible to set targe to an empty string but only to space
if strings.TrimSpace(*target) != "" {
var err error
rp, err = makeReverseProxy(*target, *targetSNI, *targetHost, *targetInsecureSkipVerify)
rp, err = makeReverseProxy(*target, *targetSNI, *targetHost, *targetInsecureSkipVerify, *targetDisableKeepAlive)
if err != nil {
log.Fatalf("can't make reverse proxy: %v", err)
}

2
docs/docs/CHANGELOG.md
View file

@ -13,6 +13,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
<!-- This changes the project to: -->
- Added possibility to disable HTTP keep-alive to support backends not properly
handling it
- Added a missing link to the Caddy installation environment in the installation documentation.
- Downstream consumers can change the default [log/slog#Logger](https://pkg.go.dev/log/slog#Logger) instance that Anubis uses by setting `opts.Logger` to your slog instance of choice ([#864](https://github.com/TecharoHQ/anubis/issues/864)).
- The [Thoth client](https://anubis.techaro.lol/docs/admin/thoth) is now public in the repo instead of being an internal package.