Reminder to self: for HttpWebRequest make sure you have your proxy setup correctly.
Monitoring HTTP Output with Fiddler in .NET HTTP Clients and WCF Proxies – Rick Strahl’s Web Log.
–jeroen
Archive for the ‘Fiddler’ Category
Monitoring HTTP Output with Fiddler in .NET HTTP Clients and WCF Proxies – Rick Strahl’s Web Log
Posted by jpluimers on 2014/04/15
Posted in .NET, .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0, .NET 4.5, ASP.NET, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Fiddler, Software Development, Visual Studio 11, Visual Studio 2005, Visual Studio 2008, Visual Studio 2010, Visual Studio and tools, Web Development | Leave a Comment »
http Fiddler has joined the Telerik family (and Eric joined Telerik too)
Posted by jpluimers on 2012/10/03
Earlie last month, I missed this: Fiddler has joined the Telerik family (and Eric joined Telerik too)
So I missed the announcements here:
Fiddler Web Debugger – Letter from Eric to the Fiddler community.
and here:
Christopher Eyhorn’s blog > Here we grow again. Telerik acquires Fiddler. What’s next?.
Cool news (:
–jeroen
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Posted in Development, Fiddler, Software Development, Web Development | Tagged: technology | Leave a Comment »
Connecting Visual Studio 2010 to TFS over a Corporate Proxy (via: Visual studio 2010: cannot connect for any online resource – Stack Overflow)
Posted by jpluimers on 2012/07/11
One of the clients has tightened up their web proxy so much that Visual Studio 2010 does not want to connect to the HTTP 8080 port on the external TFS server (yes, I will switch to HTTPS if the workaround appears stable enough).
The problem is that Visual Studio often just tells you it cannot connect. No further error details.
Well, after you get most things working, you get this error every now and then:
[Microsoft Visual Studio]
Error
Team Foundation services are not available from server tfs.some-domain\PREFIX.
Technical information (for administrator):
HTTP code 407: Proxy Authentication Required
[OK]
There are a few problems involved:
- Visual Studio does not allow you to enter credentials for the Proxy server.
- Visual Studio doesn’t fully use the proxy settings from Internet Explorer either.
- Visual Studio (unlike Internet Explorer) seems to loose the proxy session and or proxy authentication for that session over time.
All in all, it is fishy, even editing the devenv.exe.config proxy settings didn’t work (maybe I haven’t found the right combination of settings yet: that’s part of the research I need to do).
Workaround
So far, these are the current workaround steps (I will post a new entry when I found the solution or shortened the steps).
The workaround includes HTTP Fiddler, and sometimes doesn’t work without. HTTP Fiddler helps anyway as it shows the HTTP traffic (including error messages from the proxy server) between Visual Studio and TFS. Read the rest of this entry »
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Posted in .NET, Development, Fiddler, Software Development, Visual Studio 2010, Visual Studio and tools, Web Development | 3 Comments »
MIX2011 Fiddler talk is now live – Fiddler Web Debugger – Site Home – MSDN Blogs
Posted by jpluimers on 2011/05/20
I just found out that the talk that Eric Law gave on Fiddler during MIX2011 : he blogged MIX2011 Fiddler talk is now live, you can find the video here.
During that talk he:
- launched the new version of Fiddler2
- that IE9 allows localhost traffic to be intercepted by Fiddler (so no more ipv4.fiddler hacks)
- indicated that FireFox now can use the INET layer that Fiddler2 intercepts, so no more need for FiddlerHook
–jeroen
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Posted in Development, Fiddler, Power User, Software Development, Web Development | 1 Comment »
Dropbox – Why cant I establish a secure connection? –
Posted by jpluimers on 2010/09/16
Dropbox can show you this message when it can’t update (and the icon in the system tray gets a red cross 
):
can’t establish a secure connection
In my case, it was because I was using the Fiddler2 tool to debug some web-traphic.
Fiddler intercepts the WinInet API layer by putting itself as a proxy in it.
The great thing is that Fiddler2 can hook HTTPS traffic.
The not so cool thing is that I forgot that DropBox routes its’ HTTPS traphic through the WinInet API too :-)
Disabling Fiddler2 enabled DropBox to start connecting 
again and finally making a good connection 
.
As soon as DropBox has a good connection, you can restart Fiddler2 again to debug your internet traffic.
–jeroen
via: Dropbox – Why cant I establish a secure connection? –.
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Posted in Development, Fiddler, Power User, Software Development, Web Development | Leave a Comment »
Google Calendar – printing multiple months or weeks to PDF – URL parameter tips and tricks
Posted by jpluimers on 2010/06/28
Recently, I had to print multiple months or weeks from within Google Calendar.
The default UI does not allow that, but it is in fact pretty easy to do.
These are the steps to get PDF versions of a whole year.
Edit 20100714: thanks to Kilian Croese, I could explain a few more parameters, and cut out the steps for Fiddler, so it now works with most browsers on most platforms.
All text that is not relevant any more is marked deleted, so you can still read it if you want to use Fiddler.
It works from Google Chrome and Internet Explorer on Windows (FireFox works if you install FiddlerHook) Read the rest of this entry »
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Posted in Development, Fiddler, Google, Google Apps, GoogleCalendar, ISO 8601, Power User, Software Development, Web Development | 19 Comments »
Fiddler replaying requests to the ASP.NET Development Server: XP works but Vista not, or “when localhost is not 127.0.0.1 in Fiddler 2”
Posted by jpluimers on 2009/12/09
Today, I bumped into something utterly strange: requests replayed through Fiddler 2 to a locally running ASP.NET Development Server on Vista using localhost URLs did not give a connection.
I use ASP.NET from both C# and Delphi Prism. Most of my development work is on Windows XP (see notes below) but I test on many platforms.
Moving one of the projects from XP to Vista, and testing with Fiddler, I found that when using Fiddler 2:
This form of URL fails on Vista, but works on XP: http://localhost:49703
This form of URL works both on Vista, and XP: http://127.0.0.1:49703
So on Vista – contrary to XP – localhost requests from Fiddler were in fact being sent to the external network adapter on Vista, and the 127.0.0.1 requests to the internal network adapter.
Since the ASP.NET Development Server is bound only to the internal network adapter, external requests don’t work (boy, I wish they did, it would make some of my debugging so much easier!).
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Posted in .NET, ASP.NET, C#, Delphi, Development, Fiddler, Keyboards and Keyboard Shortcuts, Prism, Software Development, Web Development | 2 Comments »
The Wiert Corner - irregular stream of stuff 