前两天因项目须要，简单看了一下FiddlerScript，功能挺强的。今天有时间细致看一下，做个笔记。
改动Request或Response
改动Request和Response要在FiddlerScript中的OnBeforeRequest和OnBeforeResponse函数中加入规则就可以。OnBeforeRequest函数是在每次请求之前调用。OnBeforeResponse函数是在每次响应之前调用。
1、加入请求头Header
oSession.oRequest["NewHeaderName"] = "New header value";2、删除Response的Header
oSession.oResponse.headers.Remove("Set-Cookie"); 3、将请求从一个页面转发到同一Server上的还有一页面 if (oSession.PathAndQuery=="/hello/hello.html") { oSession.PathAndQuery="/hello/index.html"; }注意：oSession.PathAndQuery的值为fiddler中session列表中的Url： 
查看该请求的Header为：
这样的特殊情况会在以下还有样例。
上面的样例，拦截请求地址为/hello/hello.html的请求，并将其转发到同样Server的/hello/index.html
4、将请求转发到同样port号的不同server（改动请求的Host）
if(oSession.HostnameIs("www.baidu.com")){ oSession.hostname = "www.sina.com.cn";} 这个样例是将发送到百度的请求转发到新浪。则会提示页面不存在。
这里仅仅是改变了host，并不改变后面的地址。因此。假设在新浪上不存在对应的页面。如以下图片所看到的：
则结果例如以下：（该页面实际是存在的，是百度搜索出来的结果页面，被fiddler转发到新浪。可是新浪上不存的此页面）
5、将请求转发到不同port号，不同Server
if (oSession.host=="192.168.0.70:8080") { oSession.host="192.168.0.69:8020"; }这个样例是将发送到192.168.0.70:8080的请求转发到192.168.0.69:8020，这里仅仅是改变host。并不改变后面的请求地址。比如，做以上的规则后。我请求的是： http://192.168.0.70:8080/hello/hello.html
而实际我项目部署到的是：192.168.0.69:8020
6、将全部请求从一个server转发到还有一个server，包含Https
// Redirect traffic, including HTTPS tunnels if (oSession.HTTPMethodIs("CONNECT") && (oSession.PathAndQuery == "www.example.com:443")) { oSession.PathAndQuery = "beta.example.com:443"; } if (oSession.HostnameIs("www.example.com")) oSession.hostname = "beta.example.com"; 7、Simulate the Windows HOSTS file, by pointing one Hostname to a different IP address. (Retargets without changing the request's Host header)
// All requests for subdomain.example.com should be directed to the development server at 128.123.133.123 if (oSession.HostnameIs("subdomain.example.com")){ oSession.bypassGateway = true; // Prevent this request from going through an upstream proxy oSession["x-overrideHost"] = "128.123.133.123"; // DNS name or IP address of target server } 8、Retarget requests for a single page to a different page, potentially on a different server. (Retargets by changing the request's Host header) if (oSession.url=="www.example.com/live.js") { oSession.url = "dev.example.com/workinprogress.js"; }9、Prevent upload of HTTP Cookies oSession.oRequest.headers.Remove("Cookie"); 10、Decompress and unchunk a HTTP response, updating headers if needed // Remove any compression or chunking from the response in order to make it easier to manipulate oSession.utilDecodeResponse();11、Search and replace in HTML.
if (oSession.HostnameIs("www.bayden.com") && oSession.oResponse.headers.ExistsAndContains("Content-Type","text/html")){ oSession.utilDecodeResponse(); oSession.utilReplaceInResponse('',''); } 12、Case insensitive Search of response HTML. if (oSession.oResponse.headers.ExistsAndContains("Content-Type", "text/html") && oSession.utilFindInResponse("searchfor", false)>-1){ oSession["ui-color"] = "red"; } 13、Remove all DIV tags (and content inside the DIV tag) // If content-type is HTML, then remove all DIV tags if (oSession.oResponse.headers.ExistsAndContains("Content-Type", "html")){ // Remove any compression or chunking oSession.utilDecodeResponse(); var oBody = System.Text.Encoding.UTF8.GetString(oSession.responseBodyBytes); // Replace all instances of the DIV tag with an empty string var oRegEx = / ]*>(.*? )<\/div>/gi; oBody = oBody.replace(oRegEx, ""); // Set the response body to the div-less string oSession.utilSetResponseBody(oBody); }
14、Pretend your browser is the GoogleBot webcrawleroSession.oRequest["User-Agent"]="Googlebot/2.X (+http://www.googlebot.com/bot.html)";15、Request Hebrew content
oSession.oRequest["Accept-Language"]="he";16、Deny .CSS requests
if (oSession.uriContains(".css")){ oSession["ui-color"]="orange"; oSession["ui-bold"]="true"; oSession.oRequest.FailSession(404, "Blocked", "Fiddler blocked CSS file"); } 17、Simulate HTTP Basic authentication (Requires user to enter a password before displaying web content.) if ((oSession.HostnameIs("www.example.com")) && !oSession.oRequest.headers.Exists("Authorization")) { // Prevent IE's "Friendly Errors Messages" from hiding the error message by making response body longer than 512 chars. var oBody = "[Fiddler] Authentication Required.".PadRight(512, ' ') + ""; oSession.utilSetResponseBody(oBody); // Build up the headers oSession.oResponse.headers.HTTPResponseCode = 401; oSession.oResponse.headers.HTTPResponseStatus = "401 Auth Required"; oSession.oResponse["WWW-Authenticate"] = "Basic realm=\"Fiddler (just hit Ok)\""; oResponse.headers.Add("Content-Type", "text/html"); }18、Respond to a request with a file loaded from the \Captures\Responses folder (Can be placed in OnBeforeRequest or OnBeforeResponse function) if (oSession.PathAndQuery=="/version1.css") { oSession["x-replywithfile"] ="version2.css"; } 以上样例我并没有都实践。仅仅实践了中间几个地址转发的，由于如今须要用。剩下的请大家有须要的自己实践吧。