HTTP vs. HTTPS - The coding point of view - http

To send an HTTP request through a socket to a server, i would do something like this:
GET / HTTP/1.0
Host: www.example.com
User-agent: SomeBot
...
How would you go about programmatically defining an HTTPS request? I'm not looking for any programming language specific answer, something that teaches me the essence of HTTPS.
My research:
When i goto https://www.google.co.in/webhp?tab=ww&ei=sg7MUvKgGoX_rAeKxoGIDg&ved=0CBQQ1S4 this is what i get:
GET https://www.google.co.in/webhp?tab=ww&ei=sg7MUvKgGoX_rAeKxoGIDg&ved=0CBQQ1S4 HTTP/1.1
:host: www.google.co.in
x-chrome-variations: COy1yQEIlLbJAQiftskBCKS2yQEIqLbJAQiptskBCL62yQEI8YPKAQ==
accept-encoding: gzip,deflate,sdch
accept-language: en-US,en;q=0.8
user-agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36
:path: /webhp?tab=ww&ei=sg7MUvKgGoX_rAeKxoGIDg&ved=0CBQQ1S4
accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
:version: HTTP/1.1
cache-control: max-age=0
cookie: PREF=ID=c032cbb31701d0d8:U=3a8fed312bb2ee57:FF=0:LD=en:TM=1374381891:LM=1376055657:S=BooLSkeTxOsbOYls; NID=67=HDIT9zwo-KKhljgRnJMz4u_5L_qpj3FvsN9Y47dWZmByQRS4N8QYs64IcEjFYphs6YpbrmvgsejwaL5YwxzbkY_qYaKU7wBfDA9N955NznF7IIyeHxcQ5UX8Dm999AElAKdkyswNbwUx1WJZo5vEuIaqC4Hdw4AkjsdwmFjY4ujPiEAj72z93QpCLleM-NXOK8N5YWn8DqiteGrEZUQ3FdPK3vkfDet_GF3CcBnkiYWxXON6R8Kum8BWaJGtm9h5dA; SID=DQAAANQAAAB2hOHWGXo76aWm_lgruhW0NH_zbU26rK7YMM_uiyMRvIBoyiEb3Gn_j2AhtmM4v6a74DinFMAOIjq5N4g4JcAAXaMEXz1dUz8MVup_nt1udNM0hpvybeWPxE1xK8rvdL2ra9moRW58jRzzA0HdpmkrH_t2ZIQ7GhqJlxp6lOS_jfvmeeb3REYFp6Q08hRYvCRDmhYFQ7NSt_Ua_3EWu4d_o125kvZ0x0bwm7JDKEcO3S-b6SJ4KnAGIWYjQKPdirgIFEUm1vApvIr4hoa4Z01rBt9YTmhwdEG5KvJmjusPkQ; HSID=AoEbPqSO97tEXhBOd; SSID=Abkp9uP00vi4wX19_; APISID=idPvNkfOQ-W9vefw/AjRgJIuDHZMDnME-B; SAPISID=5UH5pOlPn4c_31En/AcwfUulAqos_McwmH
:scheme: https
referer: https://www.google.co.in/
:method: GET
I see that it is pretty understandable, yet slightly alien...

Related

sending http request with raw http

when investigating network behavior, I usually use postman for sending HTTP requests, however
I need the option to send a raw HTTP request (via clear text), or at least only the headers, and it seems that postman does not support to edit your request via clear HTTP text. (buy the way the opposite is possible, you can read the raw http text of the requests you constructed in postman but you can't edit them)
for example:
Accept: text/javascript, text/html, application/xml, text/xml, */*
Accept-Encoding: gzip, deflate, br
Accept-Language: he-IL,he;q=0.9,en-US;q=0.8,en;q=0.7
Cache-Control: no-cache
Connection: keep-alive
Content-Length: 21114
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Cookie: csrftoken=0alLaljTasofjCWZv7gcmukXuz6gMxfzlWpV691hzZZ1hTBcdVJ3mH8ozRDnO6hu; tk_or=%22%22; tk_lr=%22%22; session_id_12211=ff6a58b0baf98005748ce5a3c6a732aef33b750f; splunkweb_csrf_token_12211=10024448868272708216; token_key=10024448868272708216; experience_id=4852e1c6-726b-1ab3-bafa-f0a735d3f708; splunkd_12211=NjcrwAj_TLgz5JalVh2HTynLdbp_CPnfHFKi8qmsODiH40HI2urbPvAvJ9uvDKKoM3nATXEkS6dGytD0TvfiOtAUGJhk7Od25on_gJcZrQwcePQZ8HQaCmGScm^RXmOdDa^KVvN
Host: localhost:12211
Origin: http://localhost:12211
Pragma: no-cache
sec-ch-ua: "Chromium";v="106", "Google Chrome";v="106", "Not;A=Brand";v="99"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36
X-Requested-With: XMLHttpRequest
X-Splunk-Form-Key: 10024448898272708216
does postman allow editing the raw HTML? if not, there is other tool that can?

Password is shown in fiddler, wireshark

I turned on the fidder capture and entered username and password of my application and clicked login button. Now the username and password is displaying in the fiddler.
I am using primefaces. I dont want to show the password.
I added method="post" in form. but it doesnt work. Please help.
Fiddler Capure is below:
POST http://localhost:8186/myapp/ui/login.xhtml HTTP/1.1
Host: localhost:8186
Connection: keep-alive
Content-Length: 391
Accept: application/xml, text/xml, /; q=0.01
Origin: http://localhost:8186
X-Requested-With: XMLHttpRequest
Faces-Request: partial/ajax
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Referer: http://localhost:8186/myapp/ui/login.xhtml
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Cookie: JSESSIONID=025A4CEED3F44EEA80E08B00154EC1EB
javax.faces.partial.ajax=true&javax.faces.source=myloginForm%3AloginButton&javax.faces.partial.execute=%40all&javax.faces.partial.render=myloginForm%3AouterPanel+myloginForm%3AstatusMsgPanel&myloginForm%3AloginButton=myloginForm%3AloginButton&myloginForm=myloginForm&myloginForm%3AuserName=user1&myloginForm%3Apassword=pass1&javax.faces.ViewState=5967922235798284125%3A-8394345289058332812
You should understand that any HTTP message by default isn't encrypted. That means that all the data is moved via insecure connection. You may even notice a warning by the browser that your connection isn't safe and you should not share any private data. The solution for this is SSL/TLS encryption. It allows you to encrypt your connection from both sides so the information would be much harder to get.
Depending of your programming language, this part should be done from the server side.

How does HTTP header indicate a relative path

My (working) code looks as follows:
<script type="text/javascript" src="../AAAA/1111.js"></script>
<script type="text/javascript" src="BBBB/2222.js"></script>
The headers I see on the server side are:
GET /AAAA/1111.js HTTP/1.1
Host: localhost:8000
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Accept: */*
Referer: http://localhost:8000/admin
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Cookie: Idea-864a62cc=6c435764-3873-4567-a197-140cd7e7fac1
GET /BBBB/2222.js HTTP/1.1
Host: localhost:8000
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Accept: */*
Referer: http://localhost:8000/admin
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Cookie: Idea-864a62cc=6c435764-3873-4567-a197-140cd7e7fac1
How can I tell the path (on the server side) since they both look the same? One is below the referer and the other is in a sibling directory to the referer, yet I can't tell from the HTTP header. The ".." info seems to be lost yet the server gets it right? How does it know?
Thanks!
Blake McBride
That's because the browser resolves relative references. See Section 5 of RFC 3986 for details.
So no, you can't tell these apart on the server.

Two HTTP POST headers in a request after modifying the header

Despite what the title may suggest, this is not related to the common "preventing double post request" issue.
In my application, I add some data on outgoing HTTP traffic, and with some some websites, I randomly encounter an HTTP POST request that has a double-header, resulting in a server termination, as I assume the server doesn't understand the request and decides to cut me off. As the title says, I'm literally seeing two POST headers in a single request. This only happens when I append some custom HTTP fields to the header. For example, I came across this today when I followed a surveygizmo.com link, as seen in the trace at the bottom of this post.
I cannot understand if it's the browser that's doing something funky because it noticed I've modified some data, or it's something in my LSP application that causes this to happen.
When I debug my application, I only see the intercepted request the first time, which is when I inject the custom data. After that, I don't see the request anywhere except in Wireshark, so it's not like I can remediate the double headers by deleting the redundant data.
Things to note looking at the trace:
The data I'm appending is 'Custom-FieldN:'
Two almost-identical headers
Three double-CRLF's in one single request header (how is that possible?)
The Request:
POST http://www.surveygizmo.com/s3/1212345/Who-Are-You HTTP/1.1
Host: www.surveygizmo.com
Custom-Field1: UserNameBob
Custom-Field2: 2578291789
proxy-connection: keep-alive
Content-Length: 836
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Origin: http://www.surveygizmo.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryaQraA7ZABICMT6jO
Referer: http://www.surveygizmo.com/s3/1212345/Who-Are-You
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-GB,en;q=0.8,en-US;q=0.6,ja;q=0.4
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: sg-response-979523-1212345=0%3B1369154430_519ba37e477bc8.35524744%3B1369154430%3BPartial
POST http://www.surveygizmo.com/s3/1212345/Who-Are-You HTTP/1.1
Host: www.surveygizmo.com
Custom-Field1: UserNameBob
Custom-Field2: 2578291789
proxy-connection: keep-alive
Content-Length: 836
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Origin: http://www.surveygizmo.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryaQraA7ZABICMT6jO
Referer: http://www.surveygizmo.com/s3/1212345/Who-Are-You
accept-encoding: gzip,deflate
Accept-Language: en-GB,en;q=0.8,en-US;q=0.6,ja;q=0.4
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Cookie: sg-response-979523-1212345=0%3B1369154430_519ba37e477bc8.35524744%3B1369154430%3BPartial
------WebKitFormBoundaryaQraA7ZABICMT6jO
Content-Disposition: form-data; name="sg_navchoice"

What part of a HTTP header gets parsed my rewrite engines?

Given the below header:
GET /resources/css/jquery-ui.css HTTP/1.1
Host: site.com
Connection: keep-alive
Cache-Control: no-cache
Pragma: no-cache
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1
Accept: text/css,*/*;q=0.1
Referer: http://site.com/
What part of the header gets parsed by rewrite engines? (I mostly concern about Nginx)
The GET part, that is, /resources/css/jquery-ui.css in your example.

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