feat: nginx解析器支持设置alt-svc

pkg/nginx/getter.go

@@ -183,6 +183,21 @@ func (p *Parser) GetHTTPSRedirect() bool {
 	return false
 }
 
+func (p *Parser) GetAltSvc() string {
+	directive, err := p.FindOne("server.add_header")
+	if err != nil {
+		return ""
+	}
+
+	for i, param := range directive.GetParameters() {
+		if strings.HasPrefix(param, "Alt-Svc") && i+1 < len(directive.GetParameters()) {
+			return directive.GetParameters()[i+1]
+		}
+	}
+
+	return ""
+}
+
 func (p *Parser) GetAccessLog() (string, error) {
 	directive, err := p.FindOne("server.access_log")
 	if err != nil {

pkg/nginx/parser_test.go

@@ -198,6 +198,17 @@ func (s *NginxTestSuite) TestHTTPSRedirect() {
 	s.False(parser.GetHTTPSRedirect())
 }
 
+func (s *NginxTestSuite) TestAltSvc() {
+	parser, err := NewParser()
+	s.NoError(err)
+	s.NoError(parser.SetHTTPS("/www/server/vhost/cert/default.pem", "/www/server/vhost/cert/default.key"))
+	s.Equal("", parser.GetAltSvc())
+	s.NoError(parser.SetAltSvc(`'h3=":$server_port"; ma=2592000'`))
+	s.Equal(`'h3=":$server_port"; ma=2592000'`, parser.GetAltSvc())
+	s.NoError(parser.SetAltSvc(""))
+	s.Equal("", parser.GetAltSvc())
+}
+
 func (s *NginxTestSuite) TestAccessLog() {
 	parser, err := NewParser()
 	s.NoError(err)

pkg/nginx/setter.go

@@ -425,6 +425,44 @@ func (p *Parser) SetHTTPRedirect(httpRedirect bool) error {
 	return p.Set("server", directives)
 }
 
+func (p *Parser) SetAltSvc(altSvc string) error {
+	old, err := p.Find("server.add_header")
+	if err != nil {
+		return err
+	}
+	if err = p.Clear("server.add_header"); err != nil {
+		return err
+	}
+
+	var directives []*config.Directive
+	var foundFlag bool
+	for _, dir := range old {
+		if slices.Contains(dir.GetParameters(), "Alt-Svc") {
+			foundFlag = true
+			directives = append(directives, &config.Directive{
+				Name:       dir.GetName(),
+				Parameters: []string{"Alt-Svc", altSvc},
+				Comment:    dir.GetComment(),
+			})
+		} else {
+			directives = append(directives, &config.Directive{
+				Name:       dir.GetName(),
+				Parameters: dir.GetParameters(),
+				Comment:    dir.GetComment(),
+			})
+		}
+	}
+
+	if !foundFlag && altSvc != "" {
+		directives = append(directives, &config.Directive{
+			Name:       "add_header",
+			Parameters: []string{"Alt-Svc", altSvc},
+		})
+	}
+
+	return p.Set("server", directives)
+}
+
 func (p *Parser) SetAccessLog(accessLog string) error {
 	if err := p.Clear("server.access_log"); err != nil {
 		return err