Update requestHandler.js

enable rule.beforeDealHttpsRequest to overwrite host and port

lib/requestHandler.js

@@ -526,7 +526,7 @@ function getConnectReqHandler(userRule, recorder, httpsServerMgr) {
   const reqHandlerCtx = this; reqHandlerCtx.conns = new Map(); reqHandlerCtx.cltSockets = new Map()
 
   return function (req, cltSocket, head) {
-    const host = req.url.split(':')[0],
+    let host = req.url.split(':')[0],
       targetPort = req.url.split(':')[1];
     let shouldIntercept;
     let interceptWsRequest = false;
@@ -552,7 +552,12 @@ function getConnectReqHandler(userRule, recorder, httpsServerMgr) {
       // the return value in default rule is null
       // so if the value is null, will take it as final value
       shouldIntercept = yield userRule.beforeDealHttpsRequest(requestDetail);
-
+
+      //enable rule.beforeDealHttpsRequest to overwrite host and port  @evlon 2021-7-9
+      if(requestDetail.host != req.url){
+        host = requestDetail.host.split(':')[0],
+        targetPort = requestDetail.host.split(':')[1];
+      }
       // otherwise, will take the passed in option
       if (shouldIntercept === null) {
         shouldIntercept = reqHandlerCtx.forceProxyHttps;