Questions on Fiddler Forum

0 answers

672 views

When I capture a request, it's a Fiddler.Session object.
I've been searching this object for hours now, and I can't find the Request Payload.
I have searched through all properties, maybe I skipped something, but I can't find it. I searched more RequestBody and RequestHeaders without success.

So is it even possible with this object to access Request Payload?

FiddlerCore

asked on 30 Jun 2017

0 answers

529 views

Fiddler as proxy for java giving -PKIX path building failed - error!!

I am trying to use fiddler as a proxy for my java application that uses HTTPS connection. I had enabled proxy settings(HTTPS&Connections) on Fiddler and exported the Fiddler ROOT certificate successfully to my java keystore(cacerts). However when I run my application it is throwing following error:

Exception in thread "main" javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target<

br>at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1908) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:293) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:287) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1333) at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:154) at sun.security.ssl.Handshaker.processLoop(Handshaker.java:906) at sun.security.ssl.Handshaker.process_record(Handshaker.java:841) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1035) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1334) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1362) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1346) at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:563) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185) at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1454) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1382) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254) at com.teknowmics.jcloudplugin.FiddlerConnectorTest.main(FiddlerConnectorTest.java:36)<br

>Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target<

br>at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292) at sun.security.validator.Validator.validate(Validator.java:260) at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1315) ... 13 more<br

>Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target<

br>at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:144) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:130) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382) ... 19 more

Sample code I used:

public static void main(String args[]) throws MalformedURLException, IOException { System.setProperty("https.proxySet","true"); System.setProperty("https.proxyHost", "127.0.0.1"); System.setProperty("https.proxyPort", "8888");<br

>        System.setProperty("javax.net.ssl.trustStore", "d:\\SmartDocs\\installed\\jdk1.8.0Lambda\\jre\\lib\\security\\cacerts");<

br> System.setProperty("javax.net.ssl.trustStorePassword", "changeit"); System.out.println("Trust store:"+System.getProperty("javax.net.ssl.trustStore")); System.out.println("Trust store pwd:"+System.getProperty("javax.net.ssl.trustStorePassword")); String https_url = "https://stackoverflow.com/questions/499591/are-https-urls-encrypted"; URL url; url = new URL(https_url); HttpsURLConnection con = (HttpsURLConnection) url.openConnection(); if(con!=null){ System.out.println("****** Content of the URL ********"); BufferedReader br =new BufferedReader(new InputStreamReader(con.getInputStream())); String input; while ((input = br.readLine()) != null){ System.out.println(input); } br.close(); } } 

Windows

asked on 29 Jun 2017

0 answers

231 views

Regex for two words in body

Hi all,

I'm trying to an auto responder for any url and contains two words in the body. I am using the following, but it never works :-(

URLWithBody:regex:.* regex:assignRequest.*127

Here i am expecting any body request containing assignRequest and 127 (order doesn't matter) to auto respond but it doesn't work I've also tried other combinations without success

it works if i just use one word, but not two.

Regards

Chris

Windows

asked on 28 Jun 2017

0 answers

339 views

Does System.Windows.Forms.Form work in Fiddler script?

I know it uses Jscript.NET but is there some special context it runs within (and is documented somewhere) that would prevent me from instantiating a Form to input a string, select from a radio button group, etc? Or is a different file supposed to be edited?

When I try to add the following to CustomRules.js in the ScriptEditor, it says "ERROR LINE --> MyForm myform = new MyForm() - The list of attributes does not apply to the current context" when I save the script.

Here is the Form class I am trying to use to make a dialog:

import System.Windows.Forms;

import System.ComponentModel;

import System.Drawing;

class MyForm extends System.Windows.Forms.Form {

// declare variables

private var label1: Label;

private var textBox1: TextBox;

private var button1: Button;

private var panel1: Panel;

// constructor

function MyForm() {

//SuspendLayout(); // suspend layout events

// label, size, and center form

Text= "Resize Me!";

ClientSize= new System.Drawing.Size(300,300);

StartPosition= System.Windows.Forms.FormStartPosition.CenterScreen;

// create a label

label1= new Label;

label1.Location= new Point(10,10);

label1.Size= new System.Drawing.Size(80,20);

label1.Name= "label1";

label1.Text= "Label";

label1.Anchor= AnchorStyles.Left;

// create a TextBox

textBox1 = new TextBox;

textBox1.Location= new Point(10,30);

textBox1.Size = new System.Drawing.Size(80,20);

textBox1.Name= "textBox1";

textBox1.Text = "Hello World";

textBox1.Anchor= AnchorStyles.Left;

// create a Button

button1= new Button;

button1.Location= new Point(200,240);

button1.Size= new System.Drawing.Size(80,20);

button1.Name= "button1";

button1.Text= "Button";

button1.Anchor= AnchorStyles.Right | AnchorStyles.Bottom;

// create a Panel

panel1= new Panel;

panel1.Location= new Point(0,0);

panel1.Size= new System.Drawing.Size(300,300);

panel1.Name= "panel1";

// resize panel on resize form

panel1.Anchor= AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;

// add controls to the panel

panel1.Controls.Add(label1);

panel1.Controls.Add(textBox1);

panel1.Controls.Add(button1);

// add panel to form

this.Controls.Add(panel1);

//ResumeLayout(); // resume layout events

} // end_constructor

} // end_class

class Handlers {

...

static function BeforeTestList(arrSess: Session[]): boolean

{

MyForm myform = new MyForm();

myform.ShowDialog();

return true; // Test should proceed; return false to cancel

}

Fiddler Classic

asked on 27 Jun 2017

0 answers

389 views

Fiddler not detecting requests prepared by Python's requests library

Using the Python requests library, I can do something like this:

session = requests.Session()session.post("https://testurl", ..., verify=false)

and Fiddler will detect the web request just fine. However, if I use a prepared request like so:

session = requests.Session()request = requests.Request("POST", "https://testurl", ...)session.prepare_request(request)session.send(prepared, verify=false)

the sent web request does not show up in the session list in Fiddler. I've confirmed that the request is getting sent and receiving a response through the Python script, but for some reason it's not showing up in Fiddler. Any ideas? I don't have any filters or rules enabled.

Fiddler Classic

asked on 27 Jun 2017

0 answers

108 views

Any way to see the CertificateRequest during ServerHello?

I know Fiddler (which is awesome by the way) can server a certificate upon request from the server; however, I'm trying to debug what type of filters the 3rd party server (we don't have access to it) is trying to request.

In the connect request/response I don't ever see an actual CertificateRequest although I some information about the connect, and that Fiddler handled some items in that TLS handshake, just not about a certificate request from the server for the client...

Is this something just not possible with Fiddler and I need to wireshark this?

Cheers!

Fiddler Classic

asked on 27 Jun 2017

10 answers

309 views

FiddlerHook extension cannot be verified in Firefox 40

I'm wondering when FiddlerHook will be released as a signed add-on for Firefox.

Mozilla has announced that in the near future, unsigned add-ons will no longer be alllowed to run.

Extensions and Customization

answered on 21 Jun 2017

0 answers

233 views

Auto responder not working

Auto responder can match the request, but not responses with the selected content, just passthrough.

MacOS

asked on 21 Jun 2017

1 answer

280 views

Fiddler vs. Windows 10 Creators Update & "mobileservice:13340"

I have been unable to set fiddler as the system proxy ever since updating to the Windows 10 "creators update"(Version 1703, build 15063.332). All fields on the LAN settings window are blank, and it won't let me update them. I enter "127.0.0.1" and "8888" and after the advanced settings window closes, clicking "ok" does NOTHING!!! Reinstalling fiddler ALSO does NOTHING!!!!

After one cumulative update of Windows, the problem got worse:

" 22:17:47:1692 ! WARNING: Port 8888 is already in use (for at least some IP addresses) by 'mobileservice:13340' "

At startup, a dialog asks to reassign fiddler to a different random port. If I decline, the attached error dialog shows up.

Any suggestions?

Fiddler Classic

answered on 20 Jun 2017

7 answers

1.2K+ views

HTTPS traffic capturing

When I am trying to capture traffic of my website that deployed over HTTPS protocol along with proxy configuration in my local network, system throw following error. I have tried all possible setting in Tools -> Fiddler Option -> HTTPS and Connection but nothing work:

[Fiddler] The connection to the upstream proxy/gateway failed. Closing Fiddler, changing your system proxy settings, and restarting Fiddler may help.
System.Exception Upstream Gateway refused requested CONNECT.

Please help me in fixing this problem, as I need to record some performance matrix for my website.

Fiddler Classic

answered on 20 Jun 2017