Fiddler

Question

我将 Fiddler 配置为反向代理，以便充当客户端和服务器之间的中间人。我有一个自定义规则，它会在给定特定响应 uri 的情况下从代理发送请求：

static function OnBeforeResponse(oSession: Session) {
    ...
    if (oSession.uriContains("something.aspx")) {

        var request = "..."
        FiddlerObject.utilIssueRequest(request);
    }
...
}

有什么方法可以将utilIssueRequest 发出的请求路由回客户端机器吗？

Answer 1

可以，但是这样做非常复杂。通常，您要做的只是修改 OnBeforeRequest 处理程序中的请求，以便 URL/Host header 指向新的目标服务器。

Answer 2

抱歉 - 我的问题最终需要比我在提问时意识到的更多的细节。如果有人感兴趣，我用这个奇怪的方法解决了这个问题：

拓扑：Windows 客户端 --> Windows 客户端上的 Fiddler 代理 --> 中间人上的 Fiddler 反向代理 --> Windows 服务器

Windows 客户端中的代码 CustomRules.js:

static function OnBeforeRequest(oSession: Session) {

    //detect prefetch response
    if (oSession.oRequest.headers.Exists("X-FiddlerPrefetch")) {
        //dump response into a variable
        oSession.utilDecodeRequest();
        prefetchResponse = System.Text.Encoding.UTF8.GetString(oSession.requestBodyBytes);
    }

    //detect uri that was prefetched
    if (oSession.uriContains("/some_uri")) {
        //wait for prefetch - cant find any docs for how to 'sleep' here
        // while (prefetchResponse === "") {
            // Sleep(1);
        // }

        //use cached response
        oSession.utilCreateResponseAndBypassServer();
        oSession.utilSetResponseBody(prefetchResponse);

    }   

    //redirect traffic to man-in-the-middle
    if (oSession.HostnameIs("some_server")) {
        oSession["x-overrideHost"] = "man-in-the-middle:443";
    }
...

中间人代码CustomRules.js:

static function OnBeforeResponse(oSession: Session) {

    //intercept response containing prefetch material
    if (oSession.uriContains("some_response")) {

        //parse response body for some prefetch info
        ...

        //compose request
        var request = "POST " + uri + " HTTP/1.1" + "\n" +
        "X-FiddlerOpt: test\n" +
        ...

        //send off to server
        FiddlerObject.utilIssueRequest(request);  
    }


    //detect the prefetch response, send to client 
    if (oSession.oRequest.headers.Exists("X-FiddlerOpt")) {

        oSession.utilDecodeResponse();
        var payload = System.Text.Encoding.UTF8.GetString(oSession.responseBodyBytes);;

        //compose request
        var request = "GET " + "http://windows_client:8888/ HTTP/1.1" + "\n" +
        "Content-Length: " + payload.length + "\n" +
        "X-FiddlerPrefetch: test\n" +
        "\n" +
        payload

        //send request
        FiddlerObject.utilIssueRequest(request); 
    }
...

我确信有更简单或更好的方法可以做到这一点，欢迎任何反馈。

Fiddler - 为代理客户端发送请求

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jscript