代理拦截器：添加日志。

packages/mitmproxy/src/lib/interceptor/impl/req/proxy.js

@@ -3,6 +3,8 @@ module.exports = {
   requestIntercept (context, interceptOpt, req, res, ssl, next) {
     const { rOptions, log, RequestCounter } = context
 
+    const originHostname = rOptions.hostname
+
     let proxyConf = interceptOpt.proxy
     if (RequestCounter && interceptOpt.backup && interceptOpt.backup.length > 0) {
       // 优选逻辑
@@ -67,7 +69,11 @@ module.exports = {
       if (rOptions.agent && rOptions.agent.options) {
         rOptions.agent.options.rejectUnauthorized = false
       }
+      log.info('proxy intercept: hostname:', originHostname, ', target：', proxyTarget, ', sni replace servername:', rOptions.servername)
+    } else {
+      log.info('proxy intercept: hostname:', originHostname, ', target：', proxyTarget)
     }
+
     return true
   },
   is (interceptOpt) {