add custom http response header for reverse proxy

config/config.go

@@ -398,6 +398,8 @@ type HTTPNodeConfig struct {
 	Host string `yaml:",omitempty" json:"host,omitempty"`
 	// additional request header
 	Header map[string]string `yaml:",omitempty" json:"header,omitempty"`
+	// additional response header
+	ResponseHeader map[string]string `yaml:",omitempty" json:"responseHeader,omitempty"`
 	// rewrite URL
 	Rewrite []HTTPURLRewriteConfig `yaml:",omitempty" json:"rewrite,omitempty"`
 	// rewrite response body

config/parsing/node/parse.go

@@ -177,8 +177,9 @@ func ParseNode(hop string, cfg *config.NodeConfig, log logger.Logger) (*chain.No
 
 	if cfg.HTTP != nil {
 		settings := &chain.HTTPNodeSettings{
-			Host:   cfg.HTTP.Host,
-			Header: cfg.HTTP.Header,
+			Host:           cfg.HTTP.Host,
+			Header:         cfg.HTTP.Header,
+			ResponseHeader: cfg.HTTP.ResponseHeader,
 		}
 
 		if auth := cfg.HTTP.Auth; auth != nil && auth.Username != "" {