fiddler入門 （三） 斷點、js腳本定製 設置host

參考文檔：

關於 WEB/HTTP 調試利器 Fiddler 的一些技巧分享

Fiddler 高級用法：Fiddler Script 與 HTTP 斷點調試

Fiddler系列之修改host

2、Fiddler AutoResponder：請求、響應應答與替換

AutoResponder 是 Fiddler 比較重要且比較強大的功能之一。可用於攔截某一請求，並重定向到本地的資源。攔截和重定向後，實際上訪問的是本地的文件或者得到的是Fiddler的內置響應。使用Fiddler的內置響應替代服務器的應答。可用於調試服務器端代碼而無需修改服務器端的代碼和配置

2.1 線上檔案替換爲本機端檔案

 右上的AutoResponder ，勾選Enable automatic responses 和Unmatched requests passthrough ，按下右邊的Add ；

再將下方的Rule Editor 第一行修改爲線上地址（地址也可以使用Regular Expression ，開頭加上regex: 即可。）；

按下Rule Editor 第二行右邊的箭頭，選擇Find a file ... ；

選擇要替換成的本機端檔案，按下右邊的SAVE ，大功告成！

CustomRules.js高級應用

更詳細的說明請參考Fiddler官方說明文件- Script Samples 。

背景介紹：這個文件可以定製很多東西，都是永久性的設置。如果要臨時性的設置，就用左小角的命令。

打開CustomRules.js方法1：腳本文件CustomRules.js位於 Fiddler2\Scripts\CustomRules.js

打開CustomRules.js方法2： 點擊菜單Rules->Customize Rules。如果安裝了編輯器，就會打開“Fiddler ScriptEditor”編輯界面

打開方法3：

 

1.2.1 修改session樣式
// 修改session中的顯示樣式（顏色）
 oSession["ui-color"] = "orange";

//修改http請求，在如下函數中修改http請求頭：
static function OnBeforeRequest(oSession: Session)

//修改http應答，在如下函數中修改http應答：
static function OnBeforeResponse(oSession: Session)

//在如下函數中fiddler命令（右下角的命令行）：
static function OnExecAction(sParams: String[])

//例如http請求中，對域名爲p.21kunpeng.com的URI的http請求內容作修改：
if (oSession.host.indexOf("p.21kunpeng.com") > -1) {
 // 修改session中的顯示樣式（顏色）
 oSession["ui-color"] = "orange";
 // 移除http頭部中的MQB-X5-Referer字段
 oSession.oRequest.headers.Remove("MQB-X5-Referer");
 // 修改http頭部中的Cache-Control字段
 oSession.oRequest["Cache-Control"] = "no-cache";
 // 修改host
 oSession.host = "kyfw.12306.cn"; 
 // 修改Origin字段
 oSession.oRequest["Origin"] = "https://kyfw.12306.cn";
 // 刪除所有的cookie
 oSession.oRequest.headers.Remove("Cookie");
 // 新建cookie
 oSession.oRequest.headers.Add("Cookie", "username=yulesyu;");
 // 修改Referer字段
 oSession.oRequest["Referer"] = "https://kyfw.12306.cn/otsweb/loginAction.do";

 // 獲取Request中的body字符串
 var strBody=oSession.GetRequestBodyAsString();
 // 用正則表達式或者replace方法去修改string
 strBody=strBody.replace("1111","2222");
 // 彈個對話框檢查下修改後的body               
 FiddlerObject.alert(strBody);
 // 將修改後的body，重新寫回Request中
 oSession.utilSetRequestBody(strBody);
}


//例如http應答中，如果含有location並且location中含有字段initQueryUserInfo，則修改爲http://p.21kunpeng.com

var location = oSession.oResponse.headers["Location"];
 if(oSession.PathAndQuery.indexOf("initQueryUserInfo") != -1) 
 {      
    oSession.oResponse.headers["Location"] = "http://p.21kunpeng.com";
 }


1.2.2 修改URI
//將請求URI中http協議替換成https協議，例如：
oSession.fullUrl = "https" + oSession.fullUrl.Substring(oSession.fullUrl.IndexOf(':'));

1.2.3 定製菜單
定製rule菜單的子菜單

例如在rule菜單下定義一個修改http頭部中的Q-UA字段的子菜單：

// 定義名爲Q-UA的子菜單
RulesString("&Q-UA", true);
// 生成Q-UA子菜單的radio選項
RulesStringValue(0,"x5_4.3", "ADRQBX43_GA/420411&X5MTT_3/024200&ADR&346014& U9200 &0&9065&Android4.0.3 &V3")
RulesStringValue(1,"x5_5.0", "ADRQBX50_B1/500620&X5MTT_3/025001&ADR&346014& U9200 &21013&9255&Android4.2.2 &V3")
RulesStringValue(2,"ios4.1", "IQB41_GA/370015&IMTT_3/370015&IPH&406040&iPodTouch4G&50003&8917&V3")
RulesStringValue(3,"ios5.0", "IQB50_GA/500028&IMTT_3/500028&IPH&406040&iPhone4&50001&9219&iOS7.0.4&V3")
RulesStringValue(4,"&Custom...", "%CUSTOM%")
public static var sQUA: String = null;

還需要在OnBeforeRequest函數中加入：
 // Q-UA Overrides
 if (null != sQUA) {
     oSession.oRequest["Q-UA"] = sQUA; 
 }


定製tool菜單的子菜單
// tool menu
 public static ToolsAction("tool menu")
 function DoManualYules(){
     FiddlerObject.alert("tool menu"); // 根據需要定製
 }

定製右鍵子菜單
 // tool menu
 public static ContextAction("context menu")
 function DoOpenInIE(oSessions: Fiddler.Session[]){
     FiddlerObject.alert("context menu"); // 根據需要定製
 }

CustomRules.js完整內容如下

import System;
import System.Windows.Forms;
import Fiddler;

// INTRODUCTION
//
// Well, hello there!
//
// Don't be scared! :-)
//
// This is the FiddlerScript Rules file, which creates some of the menu commands and
// other features of Fiddler. You can edit this file to modify or add new commands.
//
// The original version of this file is named SampleRules.js and it is in the
// \Program Files\Fiddler\ folder. When Fiddler first runs, it creates a copy named
// CustomRules.js inside your \Documents\Fiddler2\Scripts folder. If you make a 
// mistake in editing this file, simply delete the CustomRules.js file and restart
// Fiddler. A fresh copy of the default rules will be created from the original
// sample rules file.

// The best way to edit this file is to install the FiddlerScript Editor, part of
// the free SyntaxEditing addons. Get it here: http://fiddler2.com/r/?SYNTAXVIEWINSTALL

// GLOBALIZATION NOTE: Save this file using UTF-8 Encoding.

// JScript.NET Reference
// http://fiddler2.com/r/?msdnjsnet
//
// FiddlerScript Reference
// http://fiddler2.com/r/?fiddlerscriptcookbook

class Handlers
{
    // *****************
    //
    // This is the Handlers class. Pretty much everything you ever add to FiddlerScript
    // belongs right inside here, or inside one of the already-existing functions below.
    //
    // *****************

    // The following snippet demonstrates a custom-bound column for the Web Sessions list.
    // See http://fiddler2.com/r/?fiddlercolumns for more info
    /*
      public static BindUIColumn("Method", 60)
      function FillMethodColumn(oS: Session): String {
         return oS.RequestMethod;
      }
    */

    // The following snippet demonstrates how to create a custom tab that shows simple text
    /*
       public BindUITab("Flags")
       static function FlagsReport(arrSess: Session[]):String {
        var oSB: System.Text.StringBuilder = new System.Text.StringBuilder();
        for (var i:int = 0; i<arrSess.Length; i++)
        {
            oSB.AppendLine("SESSION FLAGS");
            oSB.AppendFormat("{0}: {1}\n", arrSess[i].id, arrSess[i].fullUrl);
            for(var sFlag in arrSess[i].oFlags)
            {
                oSB.AppendFormat("\t{0}:\t\t{1}\n", sFlag.Key, sFlag.Value);
            }
        }
        return oSB.ToString();
    }
    */

    // You can create a custom menu like so:
    /*
    QuickLinkMenu("&Links") 
    QuickLinkItem("IE GeoLoc TestDrive", "http://ie.microsoft.com/testdrive/HTML5/Geolocation/Default.html")
    QuickLinkItem("FiddlerCore", "http://fiddler2.com/fiddlercore")
    public static function DoLinksMenu(sText: String, sAction: String)
    {
        Utilities.LaunchHyperlink(sAction);
    }
    */

    public static RulesOption("Hide 304s")
    BindPref("fiddlerscript.rules.Hide304s")
    var m_Hide304s: boolean = false;

    // Cause Fiddler to override the Accept-Language header with one of the defined values
    public static RulesOption("Request &Japanese Content")
    var m_Japanese: boolean = false;

    // Automatic Authentication
    public static RulesOption("&Automatically Authenticate")
    BindPref("fiddlerscript.rules.AutoAuth")
    var m_AutoAuth: boolean = false;

    // Cause Fiddler to override the User-Agent header with one of the defined values
    // The page http://browserscope2.org/browse?category=selectors&ua=Mobile%20Safari is a good place to find updated versions of these
    RulesString("&User-Agents", true) 
    BindPref("fiddlerscript.ephemeral.UserAgentString")
    RulesStringValue(0,"Netscape &3", "Mozilla/3.0 (Win95; I)")
    RulesStringValue(1,"WinPhone8.1", "Mozilla/5.0 (Mobile; Windows Phone 8.1; Android 4.0; ARM; Trident/7.0; Touch; rv:11.0; IEMobile/11.0; NOKIA; Lumia 520) like iPhone OS 7_0_3 Mac OS X AppleWebKit/537 (KHTML, like Gecko) Mobile Safari/537")
    RulesStringValue(2,"&Safari5 (Win7)", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1")
    RulesStringValue(3,"Safari9 (Mac)", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.56 (KHTML, like Gecko) Version/9.0 Safari/601.1.56")
    RulesStringValue(4,"iPad", "Mozilla/5.0 (iPad; CPU OS 8_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12F5027d Safari/600.1.4")
    RulesStringValue(5,"iPhone6", "Mozilla/5.0 (iPhone; CPU iPhone OS 8_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12F70 Safari/600.1.4")
    RulesStringValue(6,"IE &6 (XPSP2)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)")
    RulesStringValue(7,"IE &7 (Vista)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1)")
    RulesStringValue(8,"IE 8 (Win2k3 x64)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; WOW64; Trident/4.0)")
    RulesStringValue(9,"IE &8 (Win7)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)")
    RulesStringValue(10,"IE 9 (Win7)", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)")
    RulesStringValue(11,"IE 10 (Win8)", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)")
    RulesStringValue(12,"IE 11 (Surface2)", "Mozilla/5.0 (Windows NT 6.3; ARM; Trident/7.0; Touch; rv:11.0) like Gecko")
    RulesStringValue(13,"IE 11 (Win8.1)", "Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko")
    RulesStringValue(14,"Edge (Win10)", "Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.11082")
    RulesStringValue(15,"&Opera", "Opera/9.80 (Windows NT 6.2; WOW64) Presto/2.12.388 Version/12.17")
    RulesStringValue(16,"&Firefox 3.6", "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.7) Gecko/20100625 Firefox/3.6.7")
    RulesStringValue(17,"&Firefox 43", "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0")
    RulesStringValue(18,"&Firefox Phone", "Mozilla/5.0 (Mobile; rv:18.0) Gecko/18.0 Firefox/18.0")
    RulesStringValue(19,"&Firefox (Mac)", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0")
    RulesStringValue(20,"Chrome (Win)", "Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.48 Safari/537.36")
    RulesStringValue(21,"Chrome (Android)", "Mozilla/5.0 (Linux; Android 5.1.1; Nexus 5 Build/LMY48B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.78 Mobile Safari/537.36")
    RulesStringValue(22,"ChromeBook", "Mozilla/5.0 (X11; CrOS x86_64 6680.52.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.74 Safari/537.36")
    RulesStringValue(23,"GoogleBot Crawler", "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)")
    RulesStringValue(24,"Kindle Fire (Silk)", "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-us; Silk/1.0.22.79_10013310) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16 Silk-Accelerated=true")
    RulesStringValue(25,"&Custom...", "%CUSTOM%")
    public static var sUA: String = null;

    // Cause Fiddler to delay HTTP traffic to simulate typical 56k modem conditions
    public static RulesOption("Simulate &Modem Speeds", "Per&formance")
    var m_SimulateModem: boolean = false;

    // Removes HTTP-caching related headers and specifies "no-cache" on requests and responses
    public static RulesOption("&Disable Caching", "Per&formance")
    var m_DisableCaching: boolean = false;

    public static RulesOption("Cache Always &Fresh", "Per&formance")
    var m_AlwaysFresh: boolean = false;
        
    // Force a manual reload of the script file.  Resets all
    // RulesOption variables to their defaults.
    public static ToolsAction("Reset Script")
    function DoManualReload() { 
        FiddlerObject.ReloadScript();
    }

    public static ContextAction("Decode Selected Sessions")
    function DoRemoveEncoding(oSessions: Session[]) {
        for (var x:int = 0; x < oSessions.Length; x++){
            oSessions[x].utilDecodeRequest();
            oSessions[x].utilDecodeResponse();
        }
        UI.actUpdateInspector(true,true);
    }

    static function OnBeforeRequest(oSession: Session) {
        // Sample Rule: Color ASPX requests in RED
        // if (oSession.uriContains(".aspx")) {	oSession["ui-color"] = "red";	}

        // Sample Rule: Flag POSTs to fiddler2.com in italics
        // if (oSession.HostnameIs("www.fiddler2.com") && oSession.HTTPMethodIs("POST")) {	oSession["ui-italic"] = "yup";	}

        // Sample Rule: Break requests for URLs containing "/sandbox/"
        // if (oSession.uriContains("/sandbox/")) {
        //     oSession.oFlags["x-breakrequest"] = "yup";	// Existence of the x-breakrequest flag creates a breakpoint; the "yup" value is unimportant.
        // }

        if ((null != gs_ReplaceToken) && (oSession.url.indexOf(gs_ReplaceToken)>-1)) {   // Case sensitive
            oSession.url = oSession.url.Replace(gs_ReplaceToken, gs_ReplaceTokenWith); 
        }
        if ((null != gs_OverridenHost) && (oSession.host.toLowerCase() == gs_OverridenHost)) {
            oSession["x-overridehost"] = gs_OverrideHostWith; 
        }

        if ((null!=bpRequestURI) && oSession.uriContains(bpRequestURI)) {
            oSession["x-breakrequest"]="uri";
        }

        if ((null!=bpMethod) && (oSession.HTTPMethodIs(bpMethod))) {
            oSession["x-breakrequest"]="method";
        }

        if ((null!=uiBoldURI) && oSession.uriContains(uiBoldURI)) {
            oSession["ui-bold"]="QuickExec";
        }

        if (m_SimulateModem) {
            // Delay sends by 300ms per KB uploaded.
            oSession["request-trickle-delay"] = "300"; 
            // Delay receives by 150ms per KB downloaded.
            oSession["response-trickle-delay"] = "150"; 
        }

        if (m_DisableCaching) {
            oSession.oRequest.headers.Remove("If-None-Match");
            oSession.oRequest.headers.Remove("If-Modified-Since");
            oSession.oRequest["Pragma"] = "no-cache";
        }

        // User-Agent Overrides
        if (null != sUA) {
            oSession.oRequest["User-Agent"] = sUA; 
        }

        if (m_Japanese) {
            oSession.oRequest["Accept-Language"] = "ja";
        }

        if (m_AutoAuth) {
            // Automatically respond to any authentication challenges using the 
            // current Fiddler user's credentials. You can change (default)
            // to a domain\\username:password string if preferred.
            //
            // WARNING: This setting poses a security risk if remote 
            // connections are permitted!
            oSession["X-AutoAuth"] = "(default)";
        }

        if (m_AlwaysFresh && (oSession.oRequest.headers.Exists("If-Modified-Since") || oSession.oRequest.headers.Exists("If-None-Match")))
        {
            oSession.utilCreateResponseAndBypassServer();
            oSession.responseCode = 304;
            oSession["ui-backcolor"] = "Lavender";
        }
        if (oSession.host.toLowerCase() == "webserver:7777") 
        {
            oSession.host = "webserver:80";
        }
    }

    // This function is called immediately after a set of request headers has
    // been read from the client. This is typically too early to do much useful
    // work, since the body hasn't yet been read, but sometimes it may be useful.
    //
    // For instance, see 
    // http://blogs.msdn.com/b/fiddler/archive/2011/11/05/http-expect-continue-delays-transmitting-post-bodies-by-up-to-350-milliseconds.aspx
    // for one useful thing you can do with this handler.
    //
    // Note: oSession.requestBodyBytes is not available within this function!
/*
    static function OnPeekAtRequestHeaders(oSession: Session) {
        var sProc = ("" + oSession["x-ProcessInfo"]).ToLower();
        if (!sProc.StartsWith("mylowercaseappname")) oSession["ui-hide"] = "NotMyApp";
    }
*/

    //
    // If a given session has response streaming enabled, then the OnBeforeResponse function 
    // is actually called AFTER the response was returned to the client.
    //
    // In contrast, this OnPeekAtResponseHeaders function is called before the response headers are 
    // sent to the client (and before the body is read from the server).  Hence this is an opportune time 
    // to disable streaming (oSession.bBufferResponse = true) if there is something in the response headers 
    // which suggests that tampering with the response body is necessary.
    // 
    // Note: oSession.responseBodyBytes is not available within this function!
    //
    static function OnPeekAtResponseHeaders(oSession: Session) {
        //FiddlerApplication.Log.LogFormat("Session {0}: Response header peek shows status is {1}", oSession.id, oSession.responseCode);
        if (m_DisableCaching) {
            oSession.oResponse.headers.Remove("Expires");
            oSession.oResponse["Cache-Control"] = "no-cache";
        }

        if ((bpStatus>0) && (oSession.responseCode == bpStatus)) {
            oSession["x-breakresponse"]="status";
            oSession.bBufferResponse = true;
        }
        
        if ((null!=bpResponseURI) && oSession.uriContains(bpResponseURI)) {
            oSession["x-breakresponse"]="uri";
            oSession.bBufferResponse = true;
        }

    }

    static function OnBeforeResponse(oSession: Session) {
        if (m_Hide304s && oSession.responseCode == 304) {
            oSession["ui-hide"] = "true";
        }
    }

/*
    // This function executes just before Fiddler returns an error that it has 
    // itself generated (e.g. "DNS Lookup failure") to the client application.
    // These responses will not run through the OnBeforeResponse function above.
    static function OnReturningError(oSession: Session) {
    }
*/
/*
    // This function executes after Fiddler finishes processing a Session, regardless
    // of whether it succeeded or failed. Note that this typically runs AFTER the last
    // update of the Web Sessions UI listitem, so you must manually refresh the Session's
    // UI if you intend to change it.
    static function OnDone(oSession: Session) {
    }
*/

    /*
    static function OnBoot() {
        MessageBox.Show("Fiddler has finished booting");
        System.Diagnostics.Process.Start("iexplore.exe");

        UI.ActivateRequestInspector("HEADERS");
        UI.ActivateResponseInspector("HEADERS");
    }
    */

    /*
    static function OnBeforeShutdown(): Boolean {
        // Return false to cancel shutdown.
        return ((0 == FiddlerApplication.UI.lvSessions.TotalItemCount()) ||
                (DialogResult.Yes == MessageBox.Show("Allow Fiddler to exit?", "Go Bye-bye?",
                 MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2)));
    }
    */

    /*
    static function OnShutdown() {
            MessageBox.Show("Fiddler has shutdown");
    }
    */

    /*
    static function OnAttach() {
        MessageBox.Show("Fiddler is now the system proxy");
    }
    */

    /*
    static function OnDetach() {
        MessageBox.Show("Fiddler is no longer the system proxy");
    }
    */

    // The Main() function runs everytime your FiddlerScript compiles
    static function Main() {
        var today: Date = new Date();
        FiddlerObject.StatusText = " CustomRules.js was loaded at: " + today;

        // Uncomment to add a "Server" column containing the response "Server" header, if present
        // UI.lvSessions.AddBoundColumn("Server", 50, "@response.server");

        // Uncomment to add a global hotkey (Win+G) that invokes the ExecAction method below...
        // UI.RegisterCustomHotkey(HotkeyModifiers.Windows, Keys.G, "screenshot"); 
    }

    // These static variables are used for simple breakpointing & other QuickExec rules 
    BindPref("fiddlerscript.ephemeral.bpRequestURI")
    public static var bpRequestURI:String = null;

    BindPref("fiddlerscript.ephemeral.bpResponseURI")
    public static var bpResponseURI:String = null;

    BindPref("fiddlerscript.ephemeral.bpMethod")
    public static var bpMethod: String = null;

    static var bpStatus:int = -1;
    static var uiBoldURI: String = null;
    static var gs_ReplaceToken: String = null;
    static var gs_ReplaceTokenWith: String = null;
    static var gs_OverridenHost: String = null;
    static var gs_OverrideHostWith: String = null;

    // The OnExecAction function is called by either the QuickExec box in the Fiddler window,
    // or by the ExecAction.exe command line utility.
    static function OnExecAction(sParams: String[]): Boolean {

        FiddlerObject.StatusText = "ExecAction: " + sParams[0];

        var sAction = sParams[0].toLowerCase();
        switch (sAction) {
        case "bold":
            if (sParams.Length<2) {uiBoldURI=null; FiddlerObject.StatusText="Bolding cleared"; return false;}
            uiBoldURI = sParams[1]; FiddlerObject.StatusText="Bolding requests for " + uiBoldURI;
            return true;
        case "bp":
            FiddlerObject.alert("bpu = breakpoint request for uri\nbpm = breakpoint request method\nbps=breakpoint response status\nbpafter = breakpoint response for URI");
            return true;
        case "bps":
            if (sParams.Length<2) {bpStatus=-1; FiddlerObject.StatusText="Response Status breakpoint cleared"; return false;}
            bpStatus = parseInt(sParams[1]); FiddlerObject.StatusText="Response status breakpoint for " + sParams[1];
            return true;
        case "bpv":
        case "bpm":
            if (sParams.Length<2) {bpMethod=null; FiddlerObject.StatusText="Request Method breakpoint cleared"; return false;}
            bpMethod = sParams[1].toUpperCase(); FiddlerObject.StatusText="Request Method breakpoint for " + bpMethod;
            return true;
        case "bpu":
            if (sParams.Length<2) {bpRequestURI=null; FiddlerObject.StatusText="RequestURI breakpoint cleared"; return false;}
            bpRequestURI = sParams[1]; 
            FiddlerObject.StatusText="RequestURI breakpoint for "+sParams[1];
            return true;
        case "bpa":
        case "bpafter":
            if (sParams.Length<2) {bpResponseURI=null; FiddlerObject.StatusText="ResponseURI breakpoint cleared"; return false;}
            bpResponseURI = sParams[1]; 
            FiddlerObject.StatusText="ResponseURI breakpoint for "+sParams[1];
            return true;
        case "overridehost":
            if (sParams.Length<3) {gs_OverridenHost=null; FiddlerObject.StatusText="Host Override cleared"; return false;}
            gs_OverridenHost = sParams[1].toLowerCase();
            gs_OverrideHostWith = sParams[2];
            FiddlerObject.StatusText="Connecting to [" + gs_OverrideHostWith + "] for requests to [" + gs_OverridenHost + "]";
            return true;
        case "urlreplace":
            if (sParams.Length<3) {gs_ReplaceToken=null; FiddlerObject.StatusText="URL Replacement cleared"; return false;}
            gs_ReplaceToken = sParams[1];
            gs_ReplaceTokenWith = sParams[2].Replace(" ", "%20");  // Simple helper
            FiddlerObject.StatusText="Replacing [" + gs_ReplaceToken + "] in URIs with [" + gs_ReplaceTokenWith + "]";
            return true;
        case "allbut":
        case "keeponly":
            if (sParams.Length<2) { FiddlerObject.StatusText="Please specify Content-Type to retain during wipe."; return false;}
            UI.actSelectSessionsWithResponseHeaderValue("Content-Type", sParams[1]);
            UI.actRemoveUnselectedSessions();
            UI.lvSessions.SelectedItems.Clear();
            FiddlerObject.StatusText="Removed all but Content-Type: " + sParams[1];
            return true;
        case "stop":
            UI.actDetachProxy();
            return true;
        case "start":
            UI.actAttachProxy();
            return true;
        case "cls":
        case "clear":
            UI.actRemoveAllSessions();
            return true;
        case "g":
        case "go":
            UI.actResumeAllSessions();
            return true;
        case "goto":
            if (sParams.Length != 2) return false;
            Utilities.LaunchHyperlink("http://www.google.com/search?hl=en&btnI=I%27m+Feeling+Lucky&q=" + Utilities.UrlEncode(sParams[1]));
            return true;
        case "help":
            Utilities.LaunchHyperlink("http://fiddler2.com/r/?quickexec");
            return true;
        case "hide":
            UI.actMinimizeToTray();
            return true;
        case "log":
            FiddlerApplication.Log.LogString((sParams.Length<2) ? "User couldn't think of anything to say..." : sParams[1]);
            return true;
        case "nuke":
            UI.actClearWinINETCache();
            UI.actClearWinINETCookies(); 
            return true;
        case "screenshot":
            UI.actCaptureScreenshot(false);
            return true;
        case "show":
            UI.actRestoreWindow();
            return true;
        case "tail":
            if (sParams.Length<2) { FiddlerObject.StatusText="Please specify # of sessions to trim the session list to."; return false;}
            UI.TrimSessionList(int.Parse(sParams[1]));
            return true;
        case "quit":
            UI.actExit();
            return true;
        case "dump":
            UI.actSelectAll();
            UI.actSaveSessionsToZip(CONFIG.GetPath("Captures") + "dump.saz");
            UI.actRemoveAllSessions();
            FiddlerObject.StatusText = "Dumped all sessions to " + CONFIG.GetPath("Captures") + "dump.saz";
            return true;

        default:
            if (sAction.StartsWith("http") || sAction.StartsWith("www.")) {
                System.Diagnostics.Process.Start(sParams[0]);
                return true;
            }
            else
            {
                FiddlerObject.StatusText = "Requested ExecAction: '" + sAction + "' not found. Type HELP to learn more.";
                return false;
            }
        }
    }
}

 

埋點上報（過濾指定session,就是filter功能），

配置fiddler到windows自啓動測試軟件自動升級

Q 怎麼把被測軟件+fiddler加入到windows的自啓動菜單？

A: 開始菜單>自啓動右鍵選“文件夾設置

　

fiddler左下角命令行的使用 （斷點，替換host）

官方文檔：https://docs.telerik.com/fiddler/knowledgebase/quickexec

會話列表下邊的黑色區域是QuickExec命令行，可以在裏面輸入命令，回車之後即可執行，非常方便，常用的命令如下：

更詳細的說明請參考Fiddler官方說明文件- QuickExec Reference 。

• •help 打開官方的使用頁面介紹，所有的命令都會列出來
• •cls 清屏 (Ctrl+x 也可以清屏)
• •?.png 用來選擇png後綴的圖片
• •bpu截獲request   ，   命令行輸入 go 會斷續執行所有中斷，再次輸入 bpu 會清除所有的斷點。
• •bpafter 截獲response
• urlreplace www.demo.com www.dev.demo.com    暫行性的替換HTTP Request Host。所有原先發到www.demo.com的HTTP請求 ， Fiddler都幫你轉發到www.dev.demo.com ，而在瀏覽器中毫無感覺。 測試debug過程中常有這種需求。這種是暫時的替換，如果要永久的替換就是去修改CustomRules.js 

• urlreplace     要清除轉發，請在同一位置輸入urlreplace

• bpu在請求開始時中斷,

• bpafter在響應到達時中斷,

• bps在特定http狀態碼時中斷,

• bpv/bpm在特定請求method時中斷。

 可以發現urlreplace 做的是整個網址字串的取代，所以可以動手腳的地方不只於此。

永久的方法是修改Fiddler的CustomRules.js ，注意是.js ！ 點下Fiddler 上方的Rules ，再點Customize Rules ：

如果有安裝FiddlerScript Editor ，會用FiddlerScript Editor開啓CustomRules.js ，否則會用筆記本開啓。 或者也可以到「我的文件 Fiddler2 Scripts 」直接編輯CustomRules.js 。

請先在CustomRules.js 找到：

  static function OnBeforeRequest ( oSession : Session ) {
   // ...
 }
在函式OnBeforeRequest 中加入：

  if ( oSession . HostnameIs ( 'www.demo.com' ) )
   oSession . hostname = 'www.dev.demo.com' ;
將CustomRules.js 存檔， Fiddler 會自動重新載入CustomRules.js ，原先發到www.demo.com 的HTTP Request 就會自動轉發到www.dev.demo.com 。

 

設置斷點

設置斷點目的：

1)修改httpRequest：host, cookie或 表單中的數據,模擬異常請求。

2) fiddler 斷點截獲，模擬接口超時場景

測試場景：前端獲取視頻列表2s內沒返回就會播放在線視頻，而不是播放錄製的視頻列表

目的：使用fiddler攔截前端的請求，不到達服務器，或者是攔截服務器的應答，不傳給前端，使得其超過2s播放在線視頻，而不是錄製視頻

設置斷點兩種方法：

第一種：打開Fiddler 點擊Rules-> Automatic Breakpoint ->Before Requests(這種方法會中斷所有的會話)，消除斷點的方法，點擊Rules-> Automatic Breakpoint ->Disabled。

第二種: 在命令行中輸入命令: bpu http://www.qq.com，這種方法只會中斷http://www.qq.com，消除斷點的方法就是在命令行中輸入命令 bpu。

但是這兩種方法當程序運行到斷點處的時候都會停止，需要手動點擊“Run to Completion”重新啓動，非常不方便。而且通過fiddler的菜單功能，無法修改http請求的URI。此時Fiddler Script的優點就體現出來了，Fiddler Script的本質其實是用JScript.NET語言寫的一個腳本文件CustomRules.js，語法類似於C#, 通過修改CustomRules.js可以很容易的修改http的請求和應答，不用中斷程序，還可以針對不同的URI做特殊的處理，除此之外還可以根據開發者的需要去定製菜單。

在最底部的位置中添加的了一個爲紅色的圖標。說明斷點設置成功了。

請求前斷點（before request  快捷鍵 F11）

方法1） 點擊Rules-> Automatic Breakpoint ->Before Requests，這種方法是中斷所有的會話，如果想消除斷點，點擊Rules->Automatic Breakpoint ->Disabled就可以了。
方法2） 在QuickExec命令行中輸入：“bpu網址/會話名”，這種方法是中斷指定服務器的會話，如果想消除命令，在命令行中輸入“bpu”。 

設置斷點（after response  快捷鍵alt+f11）
方法1） 點擊Rules-> Automatic Breakpoint ->Before Responses，這種方法是中斷所有的會話，如果想消除斷點，點擊Rules->Automatic Breakpoint ->Disabled就可以了。
方法2） 在QuickExec命令行中輸入：“bpafter網址/會話名”，這種方法是中斷某一具體的會話，如果想消除命令，在命令行中輸入“bpafter”。 

斷點命令介紹：

• bpu在請求開始時中斷,

• bpafter在響應到達時中斷,

• bps在特定http狀態碼時中斷,

• bpv/bpm在特定請求method時中斷。

提示：命令輸入區域輸入help，回車執行會打開一頁面詳細介紹fiddler的所有命令。

也可以在菜單欄設置斷點，是針對所有的會話請求，不大實用，建議用命令。

以bpu爲例演示斷點功能：

（1）以淘寶無線H5爲例，在瀏覽器打開m.taobao.com首頁。

（2）在Fiddler命令行輸入區輸入“bpu”回車執行清掉原有的斷點，然後輸入“bpu m.taobao.com/search.htm”回車執行，接下來就會中斷URL中包含此地址的請求。

（3）在瀏覽器淘寶首頁頂端搜索框輸入“充氣娃娃”後點擊搜索，此時請求被中斷，在Fiddler會話列表面板看到以紅色小圖標開頭被中斷的會話

（4）點擊會話列表中被中斷的會話，依次進入Inspectors-->WebForms。此時請求並未發出，q參數即爲查詢關鍵字，我們修改爲“nike”，然後點擊“Break on Response”按鈕。注：在這裏實現修改了請求數據，其它的post數據，甚至是headers裏的cookie、referer、user-agent等都可以修改。

（5）右邊面板Response區有響應內容了，這時Fiddler再次中斷了response，響應已到達Fiddler代理，但還沒返回給瀏覽器。點擊Inspectorsg下Response區的“response is encoded and may need to decoded before inspection.Click here to transform”後，即可在TextView tab看到返回的html內容。在這裏修改response中的title部分，然後點擊“Run to Completino"把修改後的response返回給瀏覽器。

（6）回到瀏覽器，搜索出關鍵字爲“nike”的結果，而不是“充氣娃娃”，標題也被修改爲“搜索充氣娃娃”。

 

其他：

• 命令行輸入 go 會斷續執行所有中斷，再次輸入 bpu 會清除所有的斷點。

• 如上第四點圖所示，這裏有很多的操作選擇，就是選擇輸出內容，選擇之後，實際的響應數據就會這些替代，特別是最後一個find 操作a file：這個我們可以中斷一個圖片，然後這裏選擇本地的一張圖片，這樣我們就可以替換頁面的圖片。比較強大的場景就是例如現網js出了問題，但是一般現網的js是壓縮過的，在firebug中根本無法調試，這樣我們可以把它映射到本地的一個原始版本，這樣firebug就會拿到一份原始的js，就可以方便的調試了。