Using TShark

Today I realized this blog lost its google analytics (GA) tracking. Ooops, I accidentally erased the javascript that talks to Google Analytics in my blog template. I fixed the template on my blog, and wanted to verify my browser was sending data to GA. It takes the GA UI a while to show you data is coming in, so I decided to use tshark to see if my tracker code is working. Tshark is the command line version of Wireshark, an Ethernet level packet sniffer. Lets see what HTTP GETs occur when I connect to one of my posts: 
C:\Program Files\Wireshark>tshark.exe | findstr GET
Capturing on Microsoft
1) 67.936320 192.168.1.100 -> 64.233.169.191 HTTP GET  /2009/07/finding-clr-exceptions-with-visual.html HTTP/1.1 
2) 68.211983 192.168.1.100 -> 64.233.169.191 HTTP GET /dyn-css/authorization.css?targetBlogID=7821316&zx=defa99ec-5585-4463-a42d-a32bf4868482 HTTP/1.1
3) 68.393167 192.168.1.100 -> 64.233.169.139 HTTP GET  /__utm.gif?utmwv=4.5.8&utmn=1895005015&utmhn=ig2600.blogspot.com&utmcs=UTF-8&utmsr=1600x1200&utmsc=32-bit&ut
mul=en-us&utmje=1&utmfl=10.0%20r32&utmdt=Igor%27s%20Computer%20Blog%3A%20Finding%20CLR%20exceptions%20without%20visual%20studio&utmhid=396081822&utmr=0&utmp=%2F
2009%2F07%2Ffinding-clr-exceptions-with-visual.html&utmac=UA-6806517-1&utmcc=__utma%3D91978370.809539203.1241314101.1255744665.1255763228.10%3B%2B__utmz%3D91978
370.1255744665.9.3.utmcsr%3Dblogger.com%7Cutmccn%3D(referral)%7Cutmcmd%3Dreferral%7Cutmcct%3D%2Fhtml%3B HTTP/1.1 
4) 68.393325 192.168.1.100 -> 64.233.169.191 HTTP GET /navbar.g?targetBlogID=7821316&blogName=Igor%27s+Computer+Blog&publishMode=PUBLISH_MODE_BLOGSPOT&navbarType=
BLUE&layoutType=LAYOUTS&searchRoot=http%3A%2F%2Fig2600.blogspot.com%2Fsearch&blogLocale=en_US&homepageUrl=http%3A%2F%2Fig2600.blogspot.com%2F&targetPostID=61412
67244510925043 HTTP/1.1
5) 68.517559 192.168.1.100 -> 64.233.169.191 HTTP GET /2009/07/finding-clr-exceptions-with-visual.html?action=backlinks&widgetId=Blog1&widgetType=Blog&responseTyp
e=js&postID=6141267244510925043 HTTP/1.1
6) 68.601057 192.168.1.100 -> 64.233.169.118 HTTP GET /gadgets/ifr?url=http%3A%2F%2Fwww.google.com%2Ffriendconnect%2Fgadgets%2Fmembers.xml&container=peoplesense&p
arent=http%3A%2F%2Fig2600.blogspot.com%2F&mid=0&view=profile&libs=opensocial-0.8%3Askins%3Adynamic-height%3Agoogle.blog&v=0.463.3〈=en&country=US&communityId
=02722510552710003866&caller=http%3A%2F%2Fig2600.blogspot.com%2F2009%2F07%2Ffinding-clr-exceptions-with-visual.html HTTP/1.1
7) 68.807944 192.168.1.100 -> 64.233.169.118 HTTP GET /gadgets/deps.js HTTP/1.1
What is that __utm.gif we GET in frame 3? How strange that it includes my screen resolution. A quick bing search finds this is indeed the connection to GA. So, my tracking code is good, and you should go learn how to use tshark.

Comments

Post a Comment

Popular posts from this blog

Finding CLR exceptions without visual studio

(If you want to understand what exception code 0xe0434352 is, read this post ) Often exceptions are thrown and caught and you don't see them. You probably know how to debug this in Visual Studio, so let me show you how to do it in cdb. Sample Code: class Program { static void Main(string[] args) { foreach (var x in Enumerable.Range(0,2000)) { Thread.Sleep(TimeSpan.FromSeconds(1)); Console.WriteLine("Hello World"); ThrowAndCatchException(); } } private static void ThrowAndCatchException() { try { throw new NotImplementedException(); } catch(Exception) { } } } Output of the application: Hello World Hello World Hello World Nothing about an exception, but you're sure it's happening behind the covers -- fire up cdb: C:\Program Files\Debugging Tools for Windows (x64)>cdb -pn consoleapplication3.exe <SNIP> ModLoad: 000007fe`f7e90000 000007fe`f7eb4000 C:\Windows\Mi...
Read more

Why do I keep getting exception code e0434352?

If you want to know how to debug CLR exceptions using cdb then read this post . Exception code e0434352 is the exception code used internally by the CLR to represent most exceptions(*). Regardless of if you throw a System.NullReferenceException or a System.ArgumentException in C#, you'll throw a SEH exception e0434352 under the covers. A fun way to validate this theory is to watch what happens to the CLR exceptions settings in cdb. Fire up cdb, and see the state of clr exceptions: 0:000> .shell -ci "sx" findstr clr clr - CLR exception - second-chance break - not handled clrn - CLR notification exception - break - handled .shell: Process exited Now, set the exception handler for exception number e0434352 and recheck the value of the clr exception handler: 0:000> sxe e0434352 0:000> .shell -ci "sx" findstr clr clr - CLR exception - break - not handled clrn - CLR notification exception - break - handled .shell: Process exited Armed with ...
Read more

Powershell script to enable windows to capture localhost traffic in wireshark

If you want to understand why the following scripts work read this post . Otherwise just paste the following into an elevated powershell window: Setup windows networking to allow localhost capturing in wireshark: # Find the network configuration that has the default gateway. $defaultAdapter = Get-WMIObject Win32_NetworkAdapterConfiguration | ? {$_.DefaultIPGateway} if (@($defaultAdapter).Length -ne 1) {throw "You don't have 1 default gateway, your network configuration is not supported" } # Route local IP address via the default gateway route add $defaultAdapter.IPAddress[0] $defaultAdapter.DefaultIPGateway Write-Host "Start capturing on localhost by connecting to $($defaultAdapter.IPAddress[0])" Return windows networking to normal configuration: # Find the network configuration that has the default gateway. $defaultAdapter = Get-WMIObject Win32_NetworkAdapterConfiguration | ? {$_.DefaultIPGateway} if (@($defaultAdapter).Length -ne 1) {throw "Y...
Read more