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

[Peng Yu]

Please use proper grammar. I am not following you.

On Fri, May 17, 2024 at 10:06 AM alex xmb sw ratchev <fxmbsw7@gmail.com>
wrote:

>
>
> 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
>>
> --
Regards,
Peng