add ech support (#3310)

Co-authored-by: Alireza Ahmadi <alireza7@gmail.com>

web/controller/server.go

@@ -51,6 +51,7 @@ func (a *ServerController) initRouter(g *gin.RouterGroup) {
 	g.POST("/importDB", a.importDB)
 	g.POST("/getNewX25519Cert", a.getNewX25519Cert)
 	g.POST("/getNewmldsa65", a.getNewmldsa65)
+	g.POST("/getNewEchCert", a.getNewEchCert)
 }
 
 func (a *ServerController) refreshStatus() {
@@ -208,3 +209,13 @@ func (a *ServerController) getNewmldsa65(c *gin.Context) {
 	}
 	jsonObj(c, cert, nil)
 }
+
+func (a *ServerController) getNewEchCert(c *gin.Context) {
+	sni := c.PostForm("sni")
+	cert, err := a.serverService.GetNewEchCert(sni)
+	if err != nil {
+		jsonMsg(c, "get ech certificate", err)
+		return
+	}
+	jsonObj(c, cert, nil)
+}