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

[alex xmb sw ratchev]

On Mon, May 20, 2024, 08:06 Peng Yu <pengyu.ut@gmail.com> wrote:

> http://www.dest-unreach.org/socat/doc/socat.html#EXAMPLES
>
>
> Let’s take socat as an example. I see none of the examples shown above
> allows you make a TCP request, get the response, process it, then send
> another request. The process part must allow arbitrary operations. It has
> fixed ways of processing the responses but not arbitrary ones.
>

i said its ur job
u'd do , socat tcp4:host:port exec:'bash myscript'
and inside myscript u do the actions
thats ur part
the part of socat and so is to make conn and pass data thru .. the script
is the data reader / sender

Please clarify which example it allows you process it arbitrarily.
>

tell me a http2 url u work with i can try code something for

On Sun, May 19, 2024 at 7:35 PM alex xmb sw ratchev <fxmbsw7@gmail.com>
> wrote:
>
>> if u gimme an official example
>> say , some simple http2 keep alive server url , u name it ..
>> i can show u
>>
>> On Mon, May 20, 2024, 02:33 alex xmb sw ratchev <fxmbsw7@gmail.com>
>> wrote:
>>
>>> 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
>>>>>
>>>> --
> Regards,
> Peng
>