Packet capturing and sorting out external Fiddler -- understanding the toolbar [1]

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Preface

I haven't finished this chapter yet , Because at work , Found someone using fiddler It doesn't work very well , So let me introduce this thing ,fiddler Can be divided into 10 Multiple chapters .

Text

First of all, let's get to know fiddler The principle of capturing packets .

You can see when the browser goes to visit baidu When , So he actually visited http：//127.0.0.1:8888.

fiddler In fact, as an agent , The browser sends the request to fiddler,fiddler Then go to the service that is being requested , This is forward agency .

fiddler The browser proxy will be set at startup , And then put , In fact, it is a forwarding .

This is the same as the principle of jumping on the Internet , Only one is local , One is remote .

OK, now that you know this fiddler principle , that fiddler You should know what you do , Is used to catch http Bag ,http Many people don't seem to understand the agreement , There will be a new chapter devoted to http, Will go deeper , More comprehensive , If we communicate together , You can pay attention to .

Today is the following part ：

First, let's take a look at the toolbar .

（1）WinConfig：windows Used a kind called “AppContainer” Isolation technology , Some traffic cannot be captured normally , stay fiddler Click on the WinConfig Button can remove this curse , This is related to the menu bar Tools→Win8 Loopback Exemptions The function is consistent

（2） Bubble button , to session list Add notes to the session in . Select a reply , Then click the bubble button to add notes directly . After adding successfully, it will be in Comments This note can be viewed under the column

（3）Replay Playback button ： When we need to send a request again ,Fiddler The playback function is provided to send the request again .（ Shortcut key R）

This replay Of course, there is no such simple function .

It's fun to try .

Several easy-to-use shortcut keys .

shift+r You can choose to send several requests to this interface , And simple stress tests
ctrl+x Delete all requests
shift+delete Delete unselected requests
delete Delete the selected request

It's right behind you go 了 .

notice go This label , We will think of how to be like debug Well ？ Yes, this is debug.

It's easy to use .

Choose one , Set a flag .

This flag in blue indicates that it is before the request , Green means after the request , But this is a global breakpoint , In that case , Every request is broken , This is obviously not what we want .

Usually used more , It's choosing one , Then choose the following ：

So we can modify our parameters before requesting , Not much for personal use , It is convenient to use it , For example, I happen to know some parameters , Just change it .

The following one is even less useful ：

Stream mode is not very useful .

The following decode, Actually, it means decoding .

Because some packages are compressed or encrypted , that decode Will decode .

Someone asked , This must be decoded , Some machines don't work well , It is not necessary to decode all , As long as you want to see the interface .

The following is how many sessions are saved .

These are the conversations ：

The following any process It's still useful .

This program can choose to listen on its own , If you grab your own company's bag , Then just click on the program of your own company .

That's the choice google 了 .

The following is find 了 .

find It's still very powerful .

You can check any part of the request or reply .

Then is save：

Is to report your bag by mistake , Show it to others .

Here is a screenshot ：

Not much use , One click will take a screenshot . Generally, I have my own screenshot tools , There is no need to use him , The only advantage may be that several screenshots need to be compared ？

This is the timer :

I don't use much , It doesn't really work .

If timing is required , It is entirely possible to command （ Follow up ） It says in it , Express directly in words , It would be better .

The following is to select a browser to open :

The following is a comparison of the functions in :

Sometimes there is a cache when capturing packets , Then you can delete the browser's cache with one click ,so good.

Here is a coding tool :

Compared with seeing the interface, I know .

The following tearoff No dice , It means separation .

Double screen time can play .

And finally a online:

That is, some basic network information of this computer .

junction

The next section introduces session list, Those are the conversations .