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View contents of HttpWebRequest without tools(C#)

I want to send a put request with some json strings to a server some time in the future. I want to compare the request Im sending to the requirements I have been given, but I do not have access to that server yet so I cant test if the request Im sending is looking the way it should. The only thing I found would be ToString'ing my httpWebRequest (like in this), which is not what I need.
Is there a way to read exactly what I'm sending after (or before) I send it into the void? Or alternatively, is there a way to send a request to myself and read it that way?
Edit: I cannot install foreign software on my workstation. While using a tool like Wireshark probably solves the answer for the general public, I still need a way to do this programmatically.
Edit2: Searching for the topic may have not resulted in anything, but a random topic on the right that SO suggested actually has (almost exactly) what I wanted and all it takes is copy pasting something into the web.config file. Implementing this answer puts (amongst other things) all the connections as well as their contents into the debug console.

Try using an HTTP debugging tool like Fiddler. It acts like a proxy and can let you view the request and response of HTTP requests your program sends.
Here's how to use it with HttpWebRequest: Get HTTP requests and responses made using HttpWebRequest/HttpWebResponse to show in Fiddler
If you aren't allowed to install Fiddler you could think about making your own version of Fiddler in c# to capture traffic How to create a simple proxy in C#?

WPF receive GET request's query string sent to localhost socket [duplicate]

I have a C# form application which I want to have listening for incoming HTTP requests from other computers.
How would I go about doing this?

For simple needs, the HttpListener class is a good and simple choice. There is an example on the linked MSDN page.
If, for some reason, you cannot use HttpListener, the process would be to listen to a port using TcpClient (or even the sockets API if you need the gritty details), and then implement the HTTP Protocol. I highly recommend HttpListener over rolling your own, unless you have specific requirements that HttpListener does not meet.

You can use ASP.NET Http Filters to intercept HTTP requests.
See more details here

If it's an asp.net application, you can check the http requests in the Application_BeginRequest event handler of your global.asax.

Intercept HTTP Traffic from browser and show the headers in c#

I need to create a c# application that intercepts http traffic from the user's browser (Firefox, chrome) by adding proxy settings in the browser and then show the HTTP headers of the request without using any third party plugins like FiddlerCore.
I found some examples using HttpListener but none of them show the headers.

if you interested to build a simple proxy server then you can take look here.
http://www.dreamincode.net/forums/topic/288683-a-simple-proxy-server-in-c%23/
there are few lines from there
I have written a simple and minimalist HTTP proxy server that runs on command line.
In the Start() method, a TcpListener blocks until it gets a client request and creates a new thread (ThreadHandleClient method) that processes this client, fetches its url and relays data.

Tracking HTTP requests and responses

Is it possible to get all HTTP requests of a browser?
For example: we have opened the browser, navigated to google.com, searched for a string, clicked on any link and I got some error.
Now I want to track all HTTP requests from opening browser.
We have been using 'fiddler' to do so. But we want to use C# code to track all HTTP requests as well as HTTP responses. And we want to use the failed HTTP responses in our program.
Any information on this will be very helpful.

You could use SharpPcap to implement your own 'sniffer', or use a HttpListener to create a proxy that forwards web requests.

AFAICS, there is no way of implementing this which does not replicate what you are already doing with fiddler (albeit that you could implement a passive sniffer rather than a proxy).

Debug: How can i look at my browsers output?

I have this question https://stackoverflow.com/questions/2688464/ajax-request-from-net-give-me-unexpected-results
and i am using tamper data but i am sure firefox is formatting the data in ways i dont understand. Is there a tool i can use to check firefox post request? and perhaps my C# post request?

Recommend you download the Firebug plugin for Firefox, this will allow you to debug on the browser side more easily.
Also take a look at Wireshark (or similar) to inspect the HTTP requests that are actually going out onto the network.

Fiddler is a widely used web proxy/debugger - you can easily see incoming and outgoing requests with it. It can be used with all browsers.