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Re: How is http request via /dev/tcp different from that of curl?

From: alex xmb sw ratchev
Subject: Re: How is http request via /dev/tcp different from that of curl?
Date: Fri, 17 May 2024 17:05:59 +0200 
On Fri, May 17, 2024, 13:44 Peng Yu <pengyu.ut@gmail.com> wrote:

> I know. But I need to establish one tcp connection and submit multiple
> requests using the same connection. I don’t want the connection be closed
> while I process the response. None external tools can achieve this.
>

what , ur dreaming ..
if u http request , and the httpd is valid , u can send all kinds of http
supported multi-things*
no matter what tool all work
its up to u having to make the http request n headers
if u do well , and the httpd is not too junk , it ll work , no matter which
tool

On Fri, May 17, 2024 at 5:40 AM alex xmb sw ratchev <fxmbsw7@gmail.com>
> wrote:
>
>> other tools to make tcp scripts are socat
>> http://www.dest-unreach.org/socat/ and tcpclient and tcpserver from
>> ucspi-tcp https://cr.yp.to/ucspi-tcp.html
>>
>> On Fri, May 17, 2024, 01:25 Peng Yu <pengyu.ut@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> $ curl 'http://httpbin.org/get' -H 'User-Agent: Mozilla/5.0
>>> (Macintosh; Intel Mac OS X 10.15; rv:125.0) Gecko/20100101
>>> Firefox/125.0' -H 'Accept: application/json' -H 'Accept-Language:
>>> en-US,en;q=0.5' -H 'Accept-Encoding: gzip, deflate' -H 'Referer:
>>> http://httpbin.org/' -H 'DNT: 1' -H 'Sec-GPC: 1' -H 'Connection:
>>> keep-alive'
>>> {
>>>   "args": {},
>>>   "headers": {
>>>     "Accept": "application/json",
>>>     "Accept-Encoding": "gzip, deflate",
>>>     "Accept-Language": "en-US,en;q=0.5",
>>>     "Dnt": "1",
>>>     "Host": "httpbin.org",
>>>     "Referer": "http://httpbin.org/";,
>>>     "Sec-Gpc": "1",
>>>     "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15;
>>> rv:125.0) Gecko/20100101 Firefox/125.0",
>>>     "X-Amzn-Trace-Id": "Root=1-66469337-0aab56e96f4fee271f6a09ce"
>>>   },
>>>   "origin": "xxx.xxx.xxx.xxx",
>>>   "url": "http://httpbin.org/get";
>>> }
>>>
>>> I want to replicate the same thing in bash below. But the result is
>>> not the same. How is the bash http request via /dev/tcp different from
>>> that of curl?
>>>
>>> exec {fd}<>/dev/tcp/httbin.org/80
>>>
>>> echo -e "GET /get HTTP/1.1\r
>>> Host: httpbin.org\r
>>> User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:125.0)
>>> Gecko/20100101 Firefox/125.0\r
>>> Accept: application/json\r
>>> Accept-Language: en-US,en;q=0.5\r
>>> Accept-Encoding: gzip, deflate\r
>>> Referer: http://httpbin.org/\r
>>> DNT: 1\r
>>> Sec-GPC: 1\r
>>> Connection: keep-alive\r
>>> \r" >&"$fd"
>>>
>>> function httpprotocol/recv {
>>>   while IFS= read -u "$fd" -r; do
>>>     if [[ $REPLY =~ ^([^:]+):\ *(.*)$'\r'$ ]]; then
>>>       headers[${BASH_REMATCH[1],,}]=${BASH_REMATCH[2]}
>>>     elif [[ $REPLY = $'\r' ]]; then
>>>       LC_ALL=C read -u "$fd" -r -d '' -N "${headers[content-length]}"
>>> body
>>>       break
>>>     fi
>>>  printf -v REPLY '%q' "$REPLY"
>>>  echo "$REPLY"
>>>   done
>>> }
>>>
>>> declare -A headers
>>> $ httpprotocol/recv
>>> $'HTTP/1.1 200 OK\r'
>>> $'accept-ch: Sec-CH-UA, Sec-CH-UA-Platform,
>>> Sec-CH-UA-Platform-Version, Sec-CH-UA-Mobile\r'
>>> $'cache-control: max-age=0, private, must-revalidate\r'
>>> $'connection: close\r'
>>> $'content-length: 475\r'
>>> $'content-type: text/html; charset=utf-8\r'
>>> $'date: Thu, 16 May 2024 23:18:56 GMT\r'
>>> $'server: nginx\r'
>>> $'set-cookie: sid=ab0e69e8-13da-11ef-911e-ea384f7d4599; path=/;
>>> domain=.httpbin.org; expires=Wed, 04 Jun 2092 02:33:03 GMT;
>>> max-age=2147483647; HttpOnly\r'
>>>
>>> $ declare -p headers
>>> declare -A headers=([server]="nginx" [connection]="close"
>>> [content-type]="text/html; charset=utf-8" [cache-control]="max-age=0,
>>> private, must-revalidate"
>>> [set-cookie]="sid=ab0e69e8-13da-11ef-911e-ea384f7d4599; path=/;
>>> domain=.httpbin.org; expires=Wed, 04 Jun 2092 02:33:03 GMT;
>>> max-age=2147483647; HttpOnly" [content-length]="475"
>>> [accept-ch]="Sec-CH-UA, Sec-CH-UA-Platform,
>>> Sec-CH-UA-Platform-Version, Sec-CH-UA-Mobile" [date]="Thu, 16 May 2024
>>> 23:18:56 GMT" )
>>> $ echo "$body"
>>> <html><head><title>Loading...</title></head><body><script
>>> type='text/javascript'>window.location.replace('
>>> http://httpbin.org/get?ch=1&js=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJKb2tlbiIsImV4cCI6MTcxNTkwODczNiwiaWF0IjoxNzE1OTAxNTM2LCJpc3MiOiJKb2tlbiIsImpzIjoxLCJqdGkiOiIydjgxbW1wajdvc2w5b2M4M2swMHBwNmMiLCJuYmYiOjE3MTU5MDE1MzYsInRzIjoxNzE1OTAxNTM2NTQzNzg3fQ.Bc07CLhZ_HLw5QwfQoWotZPfoegQMRYc84bD-Wqg96k&sid=ab0e69e8-13da-11ef-911e-ea384f7d4599')
>>> ;</script></body></html>
>>>
>>> --
>>> Regards,
>>> Peng
>>>
>>> --
> Regards,
> Peng
>
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