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

[alex xmb sw ratchev]

two comments about ur first post
first , the last -H with newline and json data looks suspicious , .. that
it may not be the last sent ( in the list ) , whenever it makes a difference

and second , ur bash doesnt contain that json

On Mon, May 20, 2024, 02:28 alex xmb sw ratchev <fxmbsw7@gmail.com> wrote:

>
>
> On Sun, May 19, 2024, 22:23 Peng Yu <pengyu.ut@gmail.com> wrote:
>
>> That is a simple example in my original post. For example, in a real
>> application, I may get some info from the server and then send a new
>> request based on the info I received. This will require full fledged
>> programming ability.
>>
>> The tools that you don’t seem to have such functionality. Nor it is easy
>> to access external programs in those tools like bash.
>>
>
> no ...
> its not as u describe it
>
> u use http2 keep alive
> u , with every coding language and tool , have to send tx1 then read rx1
> then again for tx2 rx2
> if http'ed correctly , u can do all these
> u dont , it seems to me , cause u got some points complety wrong
>
> the tools , i said here , as also bash , do make tcp or udp or whatever
> conns
> example : socat or tcpclient or bash opens tcp conn to httpd
> this , only this , the tools do
> they dont parse the conns data much
> this is UR JOB , not conn making apps
> its : if u code right it works
> again : the tools make tcp conns
> if u dont exit the conn , or the httpd , it may still be connected
> if u get the sent headers and reads right , it all works
>
> On Sun, May 19, 2024 at 11:14 AM alex xmb sw ratchev <fxmbsw7@gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Sun, May 19, 2024, 13:46 Peng Yu <pengyu.ut@gmail.com> wrote:
>>>
>>>> I said I need to process the responses after the sentence you quoted.
>>>> This means that I can do whatever operations with those responses. Can
>>>> those tools have the ability allowing me to do so?
>>>>
>>>
>>> they make tcp conn , what u printf in is ur thing
>>> and when to read or printf more first
>>>
>>> i dont get ur http example much
>>>
>>> On Sat, May 18, 2024 at 3:29 AM alex xmb sw ratchev <fxmbsw7@gmail.com>
>>>> wrote:
>>>>
>>>>> both tools i mentioned can put multiple user http requests , depending
>>>>> on httpd 2's
>>>>>
>>>>> they connect , and send user data , and recieve
>>>>> say u can send 3 requests , then read ..
>>>>>
>>>>> ita not ' those tools dont support multi request ' - thats wrong
>>>>> knowledge
>>>>>
>>>>> On Fri, May 17, 2024, 20:03 Peng Yu <pengyu.ut@gmail.com> wrote:
>>>>>
>>>>>> 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
>>>>>>
>>>>> --
>>>> Regards,
>>>> Peng
>>>>
>>> --
>> Regards,
>> Peng
>>
>