feat(authn-oidc): use full urls for login callback/logout options

internal/config/layers.go

@@ -15,6 +15,12 @@ func NewDefaultLayersConfig() LayersConfig {
 		},
 		Authn: AuthnLayerConfig{
 			TemplateDir: "./layers/authn/templates",
+			OIDC: AuthnOIDCLayerConfig{
+				HTTPClient: AuthnOIDCHTTPClientConfig{
+					TransportConfig: NewDefaultTransportConfig(),
+					Timeout:         NewInterpolatedDuration(10 * time.Second),
+				},
+			},
 		},
 	}
 }
@@ -25,5 +31,15 @@ type QueueLayerConfig struct {
 }
 
 type AuthnLayerConfig struct {
-	TemplateDir InterpolatedString `yaml:"templateDir"`
+	TemplateDir InterpolatedString   `yaml:"templateDir"`
+	OIDC        AuthnOIDCLayerConfig `yaml:"oidc"`
+}
+
+type AuthnOIDCLayerConfig struct {
+	HTTPClient AuthnOIDCHTTPClientConfig `yaml:"httpClient"`
+}
+
+type AuthnOIDCHTTPClientConfig struct {
+	TransportConfig
+	Timeout *InterpolatedDuration `yaml:"timeout"`
 }

internal/config/proxy_server.go

@@ -1,6 +1,10 @@
 package config
 
-import "time"
+import (
+	"crypto/tls"
+	"net/http"
+	"time"
+)
 
 type ProxyServerConfig struct {
 	HTTP      HTTPConfig      `yaml:"http"`
@@ -25,6 +29,33 @@ type TransportConfig struct {
 	WriteBufferSize        InterpolatedInt       `yaml:"writeBufferSize"`
 	ReadBufferSize         InterpolatedInt       `yaml:"readBufferSize"`
 	MaxResponseHeaderBytes InterpolatedInt       `yaml:"maxResponseHeaderBytes"`
+	InsecureSkipVerify     InterpolatedBool      `yaml:"insecureSkipVerify"`
+}
+
+func (c TransportConfig) AsTransport() *http.Transport {
+	httpTransport := http.DefaultTransport.(*http.Transport).Clone()
+
+	httpTransport.Proxy = http.ProxyFromEnvironment
+	httpTransport.ForceAttemptHTTP2 = bool(c.ForceAttemptHTTP2)
+	httpTransport.MaxIdleConns = int(c.MaxIdleConns)
+	httpTransport.MaxIdleConnsPerHost = int(c.MaxIdleConnsPerHost)
+	httpTransport.MaxConnsPerHost = int(c.MaxConnsPerHost)
+	httpTransport.IdleConnTimeout = time.Duration(*c.IdleConnTimeout)
+	httpTransport.TLSHandshakeTimeout = time.Duration(*c.TLSHandshakeTimeout)
+	httpTransport.ExpectContinueTimeout = time.Duration(*c.ExpectContinueTimeout)
+	httpTransport.DisableKeepAlives = bool(c.DisableKeepAlives)
+	httpTransport.DisableCompression = bool(c.DisableCompression)
+	httpTransport.ResponseHeaderTimeout = time.Duration(*c.ResponseHeaderTimeout)
+	httpTransport.WriteBufferSize = int(c.WriteBufferSize)
+	httpTransport.ReadBufferSize = int(c.ReadBufferSize)
+	httpTransport.MaxResponseHeaderBytes = int64(c.MaxResponseHeaderBytes)
+
+	if httpTransport.TLSClientConfig == nil {
+		httpTransport.TLSClientConfig = &tls.Config{}
+	}
+	httpTransport.TLSClientConfig.InsecureSkipVerify = bool(c.InsecureSkipVerify)
+
+	return httpTransport
 }
 
 func NewDefaultProxyServerConfig() ProxyServerConfig {
@@ -69,5 +100,6 @@ func NewDefaultTransportConfig() TransportConfig {
 		ReadBufferSize:         4096,
 		WriteBufferSize:        4096,
 		MaxResponseHeaderBytes: 0,
+		InsecureSkipVerify:     false,
 	}
 }

internal/proxy/director/layer/authn/oidc/authenticator.go

@@ -1,11 +1,16 @@
 package oidc
 
 import (
+	"bytes"
 	"context"
+	"crypto/tls"
 	"fmt"
 	"net/http"
 	"net/url"
+	"text/template"
+	"time"
 
+	"forge.cadoles.com/Cadoles/go-proxy/wildcard"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director/layer/authn"
 	"forge.cadoles.com/cadoles/bouncer/internal/store"
@@ -17,7 +22,9 @@ import (
 )
 
 type Authenticator struct {
-	store sessions.Store
+	store             sessions.Store
+	httpTransport     *http.Transport
+	httpClientTimeout time.Duration
 }
 
 func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request, layer *store.Layer) error {
@@ -28,7 +35,9 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
 		return errors.WithStack(err)
 	}
 
-	options, err := fromStoreOptions(layer.Options)
+	baseURL := originalURL.Scheme + "://" + originalURL.Host
+
+	options, err := fromStoreOptions(layer.Options, baseURL)
 	if err != nil {
 		return errors.WithStack(err)
 	}
@@ -38,16 +47,30 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
 		logger.Error(ctx, "could not retrieve session", logger.E(errors.WithStack(err)))
 	}
 
-	redirectURL := a.getRedirectURL(layer.Proxy, layer.Name, originalURL, options)
+	loginCallbackURL, err := a.getLoginCallbackURL(layer.Proxy, layer.Name, options)
-	logoutURL := a.getLogoutURL(layer.Proxy, layer.Name, originalURL, options)
-
-	client, err := a.getClient(options, redirectURL.String())
 	if err != nil {
 		return errors.WithStack(err)
 	}
 
-	switch r.URL.Path {
+	client, err := a.getClient(options, loginCallbackURL.String())
-	case redirectURL.Path:
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	loginCallbackURLPattern, err := a.templatize(options.OIDC.MatchLoginCallbackURL, layer.Proxy, layer.Name)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	logoutURLPattern, err := a.templatize(options.OIDC.MatchLogoutURL, layer.Proxy, layer.Name)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	logger.Debug(ctx, "checking url", logger.F("loginCallbackURLPattern", loginCallbackURLPattern), logger.F("logoutURLPattern", logoutURLPattern))
+
+	switch {
+	case wildcard.Match(originalURL.String(), loginCallbackURLPattern):
 		if err := client.HandleCallback(w, r, sess); err != nil {
 			return errors.WithStack(err)
 		}
@@ -57,7 +80,7 @@ func (a *Authenticator) PreAuthentication(w http.ResponseWriter, r *http.Request
 			metricLabelProxy: string(layer.Proxy),
 		}).Add(1)
 
-	case logoutURL.Path:
+	case wildcard.Match(originalURL.String(), logoutURLPattern):
 		postLogoutRedirectURL := options.OIDC.PostLogoutRedirectURL
 		if options.OIDC.PostLogoutRedirectURL == "" {
 			postLogoutRedirectURL = originalURL.Scheme + "://" + originalURL.Host
@@ -85,7 +108,9 @@ func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, lay
 		return nil, errors.WithStack(err)
 	}
 
-	options, err := fromStoreOptions(layer.Options)
+	baseURL := originalURL.Scheme + "://" + originalURL.Host
+
+	options, err := fromStoreOptions(layer.Options, baseURL)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -117,9 +142,12 @@ func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, lay
 		sess.Options.SameSite = http.SameSiteDefaultMode
 	}
 
-	redirectURL := a.getRedirectURL(layer.Proxy, layer.Name, originalURL, options)
+	loginCallbackURL, err := a.getLoginCallbackURL(layer.Proxy, layer.Name, options)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
 
-	client, err := a.getClient(options, redirectURL.String())
+	client, err := a.getClient(options, loginCallbackURL.String())
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -138,7 +166,7 @@ func (a *Authenticator) Authenticate(w http.ResponseWriter, r *http.Request, lay
 		return nil, errors.WithStack(err)
 	}
 
-	user, err := a.toUser(idToken, layer.Proxy, layer.Name, originalURL, options, sess)
+	user, err := a.toUser(idToken, layer.Proxy, layer.Name, options, sess)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -196,7 +224,7 @@ func (c claims) AsAttrs() map[string]any {
 	return attrs
 }
 
-func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName, layerName store.LayerName, originalURL *url.URL, options *LayerOptions, sess *sessions.Session) (*authn.User, error) {
+func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions, sess *sessions.Session) (*authn.User, error) {
 	var claims claims
 
 	if err := idToken.Claims(&claims); err != nil {
@@ -209,7 +237,11 @@ func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName,
 
 	attrs := claims.AsAttrs()
 
-	logoutURL := a.getLogoutURL(proxyName, layerName, originalURL, options)
+	logoutURL, err := a.getLogoutURL(proxyName, layerName, options)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
 	attrs["logout_url"] = logoutURL.String()
 
 	if accessToken, exists := sess.Values[sessionKeyAccessToken]; exists && accessToken != nil {
@@ -229,25 +261,80 @@ func (a *Authenticator) toUser(idToken *oidc.IDToken, proxyName store.ProxyName,
 	return user, nil
 }
 
-func (a *Authenticator) getRedirectURL(proxyName store.ProxyName, layerName store.LayerName, u *url.URL, options *LayerOptions) *url.URL {
+func (a *Authenticator) getLoginCallbackURL(proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) (*url.URL, error) {
-	return &url.URL{
+	url, err := a.generateURL(options.OIDC.LoginCallbackURL, proxyName, layerName)
-		Scheme: u.Scheme,
+	if err != nil {
-		Host:   u.Host,
+		return nil, errors.WithStack(err)
-		Path:   fmt.Sprintf(options.OIDC.LoginCallbackPath, fmt.Sprintf("%s/%s", proxyName, layerName)),
 	}
+
+	return url, nil
 }
 
-func (a *Authenticator) getLogoutURL(proxyName store.ProxyName, layerName store.LayerName, u *url.URL, options *LayerOptions) *url.URL {
+func (a *Authenticator) getLogoutURL(proxyName store.ProxyName, layerName store.LayerName, options *LayerOptions) (*url.URL, error) {
-	return &url.URL{
+	url, err := a.generateURL(options.OIDC.LogoutURL, proxyName, layerName)
-		Scheme: u.Scheme,
+	if err != nil {
-		Host:   u.Host,
+		return nil, errors.WithStack(err)
-		Path:   fmt.Sprintf(options.OIDC.LogoutPath, fmt.Sprintf("%s/%s", proxyName, layerName)),
 	}
+
+	return url, nil
+}
+
+func (a *Authenticator) generateURL(rawURLTemplate string, proxyName store.ProxyName, layerName store.LayerName) (*url.URL, error) {
+	rawURL, err := a.templatize(rawURLTemplate, proxyName, layerName)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	url, err := url.Parse(rawURL)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return url, nil
+}
+
+func (a *Authenticator) templatize(rawTemplate string, proxyName store.ProxyName, layerName store.LayerName) (string, error) {
+	tmpl, err := template.New("").Parse(rawTemplate)
+	if err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	var raw bytes.Buffer
+
+	err = tmpl.Execute(&raw, struct {
+		ProxyName store.ProxyName
+		LayerName store.LayerName
+	}{
+		ProxyName: proxyName,
+		LayerName: layerName,
+	})
+	if err != nil {
+		return "", errors.WithStack(err)
+	}
+
+	return raw.String(), nil
 }
 
 func (a *Authenticator) getClient(options *LayerOptions, redirectURL string) (*Client, error) {
 	ctx := context.Background()
 
+	transport := a.httpTransport.Clone()
+
+	if options.OIDC.TLSInsecureSkipVerify {
+		if transport.TLSClientConfig == nil {
+			transport.TLSClientConfig = &tls.Config{}
+		}
+
+		transport.TLSClientConfig.InsecureSkipVerify = true
+	}
+
+	httpClient := &http.Client{
+		Timeout:   a.httpClientTimeout,
+		Transport: transport,
+	}
+
+	ctx = oidc.ClientContext(ctx, httpClient)
+
 	if options.OIDC.SkipIssuerVerification {
 		ctx = oidc.InsecureIssuerURLContext(ctx, options.OIDC.IssuerURL)
 	}
@@ -263,6 +350,7 @@ func (a *Authenticator) getClient(options *LayerOptions, redirectURL string) (*C
 		WithRedirectURL(redirectURL),
 		WithScopes(options.OIDC.Scopes...),
 		WithAuthParams(options.OIDC.AuthParams),
+		WithHTTPClient(httpClient),
 	)
 
 	return client, nil

internal/proxy/director/layer/authn/oidc/client.go

@@ -30,6 +30,7 @@ var (
 )
 
 type Client struct {
+	httpClient *http.Client
 	oauth2     *oauth2.Config
 	provider   *oidc.Provider
 	verifier   *oidc.IDTokenVerifier
@@ -210,6 +211,7 @@ func (c *Client) sessionEndURL(idTokenHint, state, postLogoutRedirectURL string)
 
 func (c *Client) validate(r *http.Request, sess *sessions.Session) (*oauth2.Token, *oidc.IDToken, string, error) {
 	ctx := r.Context()
+	ctx = oidc.ClientContext(ctx, c.httpClient)
 
 	rawStoredState := sess.Values[sessionKeyLoginState]
 	receivedState := r.URL.Query().Get("state")
@@ -287,5 +289,6 @@ func NewClient(funcs ...ClientOptionFunc) *Client {
 		provider:   opts.Provider,
 		verifier:   verifier,
 		authParams: opts.AuthParams,
+		httpClient: opts.HTTPClient,
 	}
 }

internal/proxy/director/layer/authn/oidc/client_options.go

@@ -2,6 +2,7 @@ package oidc
 
 import (
 	"context"
+	"net/http"
 
 	"github.com/coreos/go-oidc/v3/oidc"
 )
@@ -14,6 +15,7 @@ type ClientOptions struct {
 	Scopes          []string
 	AuthParams      map[string]string
 	SkipIssuerCheck bool
+	HTTPClient      *http.Client
 }
 
 type ClientOptionFunc func(*ClientOptions)
@@ -63,9 +65,16 @@ func WithProvider(provider *oidc.Provider) ClientOptionFunc {
 	}
 }
 
+func WithHTTPClient(client *http.Client) ClientOptionFunc {
+	return func(opt *ClientOptions) {
+		opt.HTTPClient = client
+	}
+}
+
 func NewClientOptions(funcs ...ClientOptionFunc) *ClientOptions {
 	opt := &ClientOptions{
-		Scopes: []string{oidc.ScopeOpenID, "profile"},
+		Scopes:     []string{oidc.ScopeOpenID, "profile"},
+		HTTPClient: http.DefaultClient,
 	}
 
 	for _, f := range funcs {

internal/proxy/director/layer/authn/oidc/layer-options.json

@@ -42,22 +42,39 @@
                         }
                     }
                 },
-                "loginCallbackPath": {
+                "loginCallbackURL": {
                     "title": "Chemin associé à l'URL de callback OpenID Connect",
-                    "default": "/.bouncer/authn/oidc/%s/callback",
+                    "default": "<scheme>://<host>/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback",
-                    "description": "Le marqueur '%s' peut être utilisé pour injecter l'espace de nom '<proxy>/<layer>'.",
+                    "description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}'  peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
                     "type": "string"
                 },
-                "logoutPath": {
+                "matchLoginCallbackURL": {
+                    "title": "Patron de correspondance de l'URL interne de callback OpenID Connect",
+                    "default": "*/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback",
+                    "description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}'  peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
+                    "type": "string"
+                },
+                "logoutURL": {
                     "title": "Chemin associé à l'URL de déconnexion",
-                    "default": "/.bouncer/authn/oidc/%s/logout",
+                    "default": "<scheme>://<host>/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout",
-                    "description": "Le marqueur '%s' peut être utilisé pour injecter l'espace de nom '<proxy>/<layer>'.",
+                    "description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}'  peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
+                    "type": "string"
+                },
+                "matchLogoutURL": {
+                    "title": "Patron de correspondance l'URL interne de déconnexion",
+                    "default": "*/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout",
+                    "description": "Les marqueurs '{{ .ProxyName }}' et '{{ .LayerName }}'  peuvent être utilisés pour injecter le nom du proxy ainsi que celui du layer.",
                     "type": "string"
                 },
                 "skipIssuerVerification": {
                     "title": "Activer/désactiver la vérification de concordance de l'identifiant du fournisseur d'identité",
                     "default": false,
                     "type": "boolean"
+                },
+                "tlsInsecureSkipVerify": {
+                    "title": "Activer/désactiver la vérification du certificat TLS distant",
+                    "default": false,
+                    "type": "boolean"
                 }
             },
             "additionalProperties": false,

internal/proxy/director/layer/authn/oidc/layer.go

@@ -8,6 +8,11 @@ import (
 
 const LayerType store.LayerType = "authn-oidc"
 
-func NewLayer(store sessions.Store) *authn.Layer {
+func NewLayer(store sessions.Store, funcs ...OptionFunc) *authn.Layer {
-	return authn.NewLayer(LayerType, &Authenticator{store: store})
+	opts := NewOptions(funcs...)
+	return authn.NewLayer(LayerType, &Authenticator{
+		httpTransport:     opts.HTTPTransport,
+		httpClientTimeout: opts.HTTPClientTimeout,
+		store:             store,
+	})
 }

internal/proxy/director/layer/authn/oidc/layer_options.go

@@ -19,11 +19,14 @@ type LayerOptions struct {
 type OIDCOptions struct {
 	ClientID               string            `mapstructure:"clientId"`
 	ClientSecret           string            `mapstructure:"clientSecret"`
-	LoginCallbackPath      string            `mapstructure:"loginCallbackPath"`
+	LoginCallbackURL       string            `mapstructure:"loginCallbackURL"`
-	LogoutPath             string            `mapstructure:"logoutPath"`
+	MatchLoginCallbackURL  string            `mapstructure:"matchLoginCallbackURL"`
+	LogoutURL              string            `mapstructure:"logoutURL"`
+	MatchLogoutURL         string            `mapstructure:"matchLogoutURL"`
 	IssuerURL              string            `mapstructure:"issuerURL"`
 	SkipIssuerVerification bool              `mapstructure:"skipIssuerVerification"`
 	PostLogoutRedirectURL  string            `mapstructure:"postLogoutRedirectURL"`
+	TLSInsecureSkipVerify  bool              `mapstructure:"tlsInsecureSkipVerify"`
 	Scopes                 []string          `mapstructure:"scopes"`
 	AuthParams             map[string]string `mapstructure:"authParams"`
 }
@@ -38,13 +41,18 @@ type CookieOptions struct {
 	MaxAge   time.Duration `mapstructure:"maxAge"`
 }
 
-func fromStoreOptions(storeOptions store.LayerOptions) (*LayerOptions, error) {
+func fromStoreOptions(storeOptions store.LayerOptions, baseURL string) (*LayerOptions, error) {
+	loginCallbackPath := "/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/callback"
+	logoutPath := "/.bouncer/authn/oidc/{{ .ProxyName }}/{{ .LayerName }}/logout"
+
 	layerOptions := LayerOptions{
 		LayerOptions: authn.DefaultLayerOptions(),
 		OIDC: OIDCOptions{
-			LoginCallbackPath: "/.bouncer/authn/oidc/%s/callback",
+			LoginCallbackURL:      baseURL + loginCallbackPath,
-			LogoutPath:        "/.bouncer/authn/oidc/%s/logout",
+			MatchLoginCallbackURL: "*" + loginCallbackPath,
-			Scopes:            []string{"openid"},
+			LogoutURL:             baseURL + logoutPath,
+			MatchLogoutURL:        "*" + logoutPath,
+			Scopes:                []string{"openid"},
 		},
 		Cookie: CookieOptions{
 			Name:     defaultCookieName,

internal/proxy/director/layer/authn/oidc/options.go

@@ -0,0 +1,38 @@
+package oidc
+
+import (
+	"net/http"
+	"time"
+)
+
+type Options struct {
+	HTTPTransport     *http.Transport
+	HTTPClientTimeout time.Duration
+}
+
+type OptionFunc func(opts *Options)
+
+func WithHTTPTransport(transport *http.Transport) OptionFunc {
+	return func(opts *Options) {
+		opts.HTTPTransport = transport
+	}
+}
+
+func WithHTTPClientTimeout(timeout time.Duration) OptionFunc {
+	return func(opts *Options) {
+		opts.HTTPClientTimeout = timeout
+	}
+}
+
+func NewOptions(funcs ...OptionFunc) *Options {
+	opts := &Options{
+		HTTPTransport:     http.DefaultTransport.(*http.Transport),
+		HTTPClientTimeout: 30 * time.Second,
+	}
+
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	return opts
+}

internal/proxy/server.go

@@ -159,26 +159,10 @@ func (s *Server) createReverseProxy(ctx context.Context, target *url.URL) *httpu
 		DualStack:     bool(dialConfig.DualStack),
 	}
 
-	transportConfig := s.serverConfig.Transport
+	httpTransport := s.serverConfig.Transport.AsTransport()
-
+	httpTransport.DialContext = dialer.DialContext
-	reverseProxy.Transport = &http.Transport{
-		Proxy:                  http.ProxyFromEnvironment,
-		DialContext:            dialer.DialContext,
-		ForceAttemptHTTP2:      bool(transportConfig.ForceAttemptHTTP2),
-		MaxIdleConns:           int(transportConfig.MaxIdleConns),
-		MaxIdleConnsPerHost:    int(transportConfig.MaxIdleConnsPerHost),
-		MaxConnsPerHost:        int(transportConfig.MaxConnsPerHost),
-		IdleConnTimeout:        time.Duration(*transportConfig.IdleConnTimeout),
-		TLSHandshakeTimeout:    time.Duration(*transportConfig.TLSHandshakeTimeout),
-		ExpectContinueTimeout:  time.Duration(*transportConfig.ExpectContinueTimeout),
-		DisableKeepAlives:      bool(transportConfig.DisableKeepAlives),
-		DisableCompression:     bool(transportConfig.DisableCompression),
-		ResponseHeaderTimeout:  time.Duration(*transportConfig.ResponseHeaderTimeout),
-		WriteBufferSize:        int(transportConfig.WriteBufferSize),
-		ReadBufferSize:         int(transportConfig.ReadBufferSize),
-		MaxResponseHeaderBytes: int64(transportConfig.MaxResponseHeaderBytes),
-	}
 
+	reverseProxy.Transport = httpTransport
 	reverseProxy.ErrorHandler = s.errorHandler
 
 	return reverseProxy

internal/setup/authn_oidc_layer.go

@@ -1,6 +1,8 @@
 package setup
 
 import (
+	"time"
+
 	"forge.cadoles.com/cadoles/bouncer/internal/config"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director"
 	"forge.cadoles.com/cadoles/bouncer/internal/proxy/director/layer/authn"
@@ -25,5 +27,11 @@ func setupAuthnOIDCLayer(conf *config.Config) (director.Layer, error) {
 	adapter := redis.NewStoreAdapter(rdb)
 	store := session.NewStore(adapter)
 
-	return oidc.NewLayer(store), nil
+	transport := conf.Layers.Authn.OIDC.HTTPClient.AsTransport()
+
+	return oidc.NewLayer(
+		store,
+		oidc.WithHTTPTransport(transport),
+		oidc.WithHTTPClientTimeout(time.Duration(*conf.Layers.Authn.OIDC.HTTPClient.Timeout)),
+	), nil
 }