add auth support for forwarder node

config/config.go

@@ -288,6 +288,7 @@ type ForwardNodeConfig struct {
 	Bypasses []string        `yaml:",omitempty" json:"bypasses,omitempty"`
 	HTTP     *HTTPNodeConfig `yaml:",omitempty" json:"http,omitempty"`
 	TLS      *TLSNodeConfig  `yaml:",omitempty" json:"tls,omitempty"`
+	Auth     *AuthConfig     `yaml:",omitempty" json:"auth,omitempty"`
 }
 
 type HTTPNodeConfig struct {
@@ -382,6 +383,7 @@ type NodeConfig struct {
 	Metadata  map[string]any   `yaml:",omitempty" json:"metadata,omitempty"`
 	HTTP      *HTTPNodeConfig  `yaml:",omitempty" json:"http,omitempty"`
 	TLS       *TLSNodeConfig   `yaml:",omitempty" json:"tls,omitempty"`
+	Auth      *AuthConfig      `yaml:",omitempty" json:"auth,omitempty"`
 }
 
 type Config struct {

config/parsing/chain.go

@@ -12,6 +12,7 @@ import (
 	"github.com/go-gost/core/logger"
 	"github.com/go-gost/core/metadata"
 	mdutil "github.com/go-gost/core/metadata/util"
+	auther "github.com/go-gost/x/auth"
 	xchain "github.com/go-gost/x/chain"
 	"github.com/go-gost/x/config"
 	tls_util "github.com/go-gost/x/internal/util/tls"
@@ -231,6 +232,19 @@ func ParseHop(cfg *config.HopConfig) (chain.Hop, error) {
 				Secure:     v.TLS.Secure,
 			}))
 		}
+		if v.Auth != nil {
+			opts = append(opts, chain.AutherNodeOption(
+				auther.NewAuthenticator(
+					auther.AuthsOption(map[string]string{v.Auth.Username: v.Auth.Password}),
+					auther.LoggerOption(logger.Default().WithFields(map[string]any{
+						"kind":     "node",
+						"node":     v.Name,
+						"addr":     v.Addr,
+						"host":     v.Host,
+						"protocol": v.Protocol,
+					})),
+				)))
+		}
 		node := chain.NewNode(v.Name, v.Addr, opts...)
 		nodes = append(nodes, node)
 	}

config/parsing/service.go

@@ -259,6 +259,7 @@ func parseForwarder(cfg *config.ForwarderConfig) (chain.Hop, error) {
 						Bypasses: node.Bypasses,
 						HTTP:     node.HTTP,
 						TLS:      node.TLS,
+						Auth:     node.Auth,
 					},
 				)
 			}