networks

[prisma cobalt]

I made one :)

Check this channels pins

[shy island]

👀 latest pin?

oki

[prisma cobalt]

If you need anymore help @shy island then ping me

[shy island]

definitely 😄

[prisma cobalt]

Have you got a server and client script finished?

[shy island]

yes

[prisma cobalt]

Nice, do you know how to find your public IP address?

[shy island]

no

i just know about ipconfig

[prisma cobalt]

Ah that won't help, for your public IP, literally Google "what's my IP"

Beware this IP changes every few weeks since I assume you have a dynamic IP address

[shy island]

then i need to modify my code every week as well?

[prisma cobalt]

Yeah you'd have to change the IP in the client script every few weeks, however there is a solution

Follow the link at the bottom of the port forwarding pin to find it

[shy island]

yep i opened

also my actual task is that i have my ping pong game developed with pygame and i wanted to make it multiplayer , through a socket connection with 2 pc worldwide @prisma cobalt so all i want is to send the coordinates of the player and ball across the clients

[prisma cobalt]

Yeah that's possible with sockets

[shy island]

damn

aight

lemme go through the website

[prisma cobalt]

Website?

[shy island]

i mean ur pinned link xd

[prisma cobalt]

Ah right lmao

[turbid zinc]

Hello does anyone know how to work with rak-net in Python?

I need help getting started with it

[midnight slate]

hey guys..i actaully have a client server python program to let client download from server..everythings fine but may i know how to list the directory of the server in client..like what files are in the server folder..PS...i have two pcs , one is server one is client..Thanks

[prisma cobalt]

using the os module your can scandir and send the results back

https://dzone.com/articles/listing-a-directory-with-python#:~:text=Listing a Directory With Python 1 Introduction. There,– Current Directory Only. ... More items...

[trim moth]

os.listdir()

[latent socket]

Guys can anyone pls explain me what is th difference between socket and socket server module

Which would be efficient ? And which should i use

Thanks in Advance

[gloomy root]

socket server module?

what are you trying to do firstly

[placid fractal]

do u mean socket.socket and socket.create_server?

[prisma cobalt]

no theres a import socketserver module (might not be that exact name)

no it is that

[placid fractal]

socketserver module uses the socket library but makes it easier

[gloomy root]

again this really depends on what you're trying to do

[placid fractal]

true

[prisma cobalt]

lmao

[midnight mural]

Dont know if its the right categorie, i need help

i have a server connected through ssh

but i dont know how create open and edit a python file

its running debian 10 and ive already installed everything needed

[foggy moon]

nano is an easy to use text editor. You can use it to edit over ssh. Another option is vim. Pretty steep learning curve, and a lot or little configuring and plugging to do, but it can serve as an editor. Or use an editor on your desktop that can do ssh \o/

[midnight slate]

how to convert a list to bytes

[merry hornet]

i have a ONOS SDN controller
how can i write a script to monitor the traffic on it ?

[plain girder]

Hey guys I need help with my socket program
This is the description: Your job is to create the special-purpose web server to provide the backend to this functionality. Due to
corporate requirements, you must use the socket interface, and cannot use any module implementing a web
server directly. The program will answer various web queries and return a result. Below is an example.
Example: With the web server running, enter in the following formula into any cell in Excel 2013 (or Excel
2016):
=WEBSERVICE(“http://localhost:1234/zip/98101)
Excel should then show a result of:
Seattle, WA

[latent socket]

Listen guys i just wanna recv full data in tcp so i thought maybe socketserver module does that auto

In tcp after 1024 bytes it will break your data but i dont want it

I want a efficient version of socket (server side)

[turbid zinc]

Anyone?

[trim moth]

The 1024 bytes limit is for 1024 bits at a time

So you can keep sending and receiving data in a while true loop till theres no data to send

[latent socket]

Yeah exactly i did

[trim moth]

Noice

[latent socket]

But in some times it appends next data with old sent data

[trim moth]

Are you working with sending files?

Or just sending plain text data

[latent socket]

Text data but still if i send 2 data one after one new data appends to old data

Which i dont want

[trim moth]

Hmm

I dont quiet get your issue

I mean, i get it, but it kinda doesnt make sense

Text data is supposed to be sent 1024 bytes at a time, you get a buffered input from the input() function, you kepp sending the input text data 1024 bytes at a time

The next input happens, the received data on the server side will be appended after the previously received data

[latent socket]

Suppose i send like this
So.send(1)
So.send(2)
In recving data "2" appends with "1" so full data is now "12"

[trim moth]

Ooh

Where are you storing the received data on the server side?

In a variable?

I believe you're updating the variable as
*that variable += received data"

If that is so, its gonna do the previously received data "2" + "1" = "12"

Ig it makes sense lol

[latent socket]

Lol i save in variable but i want a fix

I only and only want to get data of packet which sent

Not the next one in old one

@trim moth

[trim moth]

Oh

Use a datastructure like list

Just append the received data in a list every time you receive something instead of storing and updating in a variable

@latent socket How does that sound?

[latent socket]

but it is same thing in a different way next data will also append to that list

[trim moth]

Oh, so you want to get rid of the old packet after receiving a new one

Thats why you were using variables in the firat place ig

Then, just dont update the value of the variable you using, instead just redefine the variable as in
X = old packet data
Then redifine it as
X = new packet data

[latent socket]

I wanna get rid of new packet in old one

[trim moth]

get rid of new packet in old one?

[latent socket]

Yez as i gave example

[latent socket]

.

[trim moth]

Can you show your code

[trim moth]

I still think redifing a variable instead of updating it would help

[trim moth]

It'd be easier to help if i understand what you're doing

[latent socket]

Hmm i will show you

[trim moth]

Yeah, sure

[latent socket]

@trim moth
here we go

def send_text(data,conn):
   data+="¥"
   conn.sendall(data.encode("utf-8"))
def recv_text(conn):
   buffer = ""
   while True:
      data = conn.recv(1024)
      data = data.decode("utf-8")
      if data.find("¥") != -1:
          data = data[:len(data) - 1]
          buffer += data
          break
      buffer += data
      time.sleep(1)
   return buffer

[trim moth]

Try buffer = data
Instead of buffer += data

Hit me up if it works or not lol

[modest pebble]

You should use the chr(255) instead of "¥" to improve readability

[trim moth]

Yeah, but it didn't matter much to me lol

@modest pebble bruh we got complementary color schemes going on lol

[latent socket]

it wont give me full data

i want a full data

[trim moth]

You mean, you want all the data you have entered to be printed right?

[latent socket]

no i want all data in one single string

so i can do something

by getting half half data its useless

[trim moth]

Like in that example, you want "1" + "2" = "12" to be your output

In that case,

def send_text(data,conn):
   data+="¥"
   conn.sendall(data.encode("utf-8"))

data_list = []

def recv_text(conn):
   buffer = ""
   while True:
      data = conn.recv(1024)
      data = data.decode("utf-8")
      if data.find("¥") != -1:
          data = data[:len(data) - 1]
          data_list.append(data)
          break
      data_list.append(data)
      time.sleep(1)
   return ''.join(data_list)

Trai dat

🥲

[latent socket]

-_- you didnt understood this is my problem

[trim moth]

But that gives you your data in one single string lol

[latent socket]

i dont want last sent byte to append in first byte

[trim moth]

Oooh i get it now

[latent socket]

and what he was saying to use chr(255) instead of that ¥ symbol

which charecter is 255 ?

[trim moth]

Idk lmao, its same anyways you use chr(255) or that character lol

[latent socket]

🤦‍♂️

[trim moth]

def send_text(data,conn):
   data+="¥"
   conn.sendall(data.encode("utf-8"))
def recv_text(conn):
   buffer = ""
   while True:
      data = conn.recv(1024)
      data = data.decode("utf-8")
      if data.find("¥") != -1:
          data = data[:len(data) - 1]
          buffer += ' ' + data
          break
      buffer += ' ' + data
      time.sleep(1)
   return buffer 

Just added a space lol

[trim moth]

lmao

[latent socket]

reply to that guy

[trim moth]

lol

[latent socket]

i mean for logic less answer 🤦‍♂️

[trim moth]

Dis code work?

[latent socket]

😒 what space will do

[trim moth]

lmao, what your desired output should look like?

[latent socket]

wait dude let me show you

[trim moth]

yeah 😁

[latent socket]

see i sent 2 packets

in server side /Write Output will write data to a file

and /ADM will read a file and will send client data back

but see in data file what happened my packet /ADM also append to data file

while it should not be append because it is a different data and it has different work to do

[trim moth]

Hmmmmm

[latent socket]

😑

[trim moth]

Ooff

This is hurting my bren

[latent socket]

🥺 😑

[trim moth]

Make it so that on receiving '/ADM' it will not append it to the file like it does everytime

[trim moth]

lmao i dont have anything better to do

[latent socket]

but why just you are replying

where are others

[trim moth]

Oh

lol ¯\_(ツ)_/¯

[latent socket]

Noice

[trim moth]

Ig that's all a 16yo can help

🥲

[prisma cobalt]

who needs help with what?

[prisma cobalt]

if what your asking is dynamically changing the size of how much data you recieve without it breaking than thats easy

[latent socket]

?

@prisma cobalt

[prisma cobalt]

hang on im just looking through what thyBro suggested

yeah so you need a set size message, lets say 64 bytes to begin with, you recieve these 64 bytes and it tells you the length of the incoming message so you can recieve exactly that size

you get me?

[latent socket]

i cant get it explain with code

please

[prisma cobalt]

64 bytes is enough since its max is a number that can represent 18446744073709551616 bytes which is around 16 exabytes

ok il give an example

MessageSize = Sock.recv(64).decode()
Message = Sock.recv(MessageSize)

[latent socket]

[prisma cobalt]

so you would send the size of the message in bytes, then send the message

get it?

[latent socket]

you sure with multiple clients any request can come at any second you can handle recving 2 times

[prisma cobalt]

yeah there shouldnt be a problem

whats your current solution?

[latent socket]

this is my current PROGRAM

[latent socket]

and problem is here

read down

[prisma cobalt]

your reading the file wrong i think and are you using the native socket lib since send_text isnt a function i dont think

[latent socket]

.

[prisma cobalt]

why are you using os.popen to read a file?

@latent socket

[latent socket]

its just reading my task manager programs list

os.popen is a method to use batch commands

by using tasklist you can get taskmanager programs list

[prisma cobalt]

ah right

yeah you should probably do my method

aka: sending the message size AND THEN the message

[latent socket]

what is the efficient method

[prisma cobalt]

alternatively you could send one message of X size with the total message length in the designated bits in the front, then your program knows to keep recving data until its reached that number in the designated bits

[latent socket]

the problem is if i sent a 2nd message in that time it also counts that in first message recving

[prisma cobalt]

i think thats cause your += the data

[latent socket]

so your solution also has that

so what is the difference

@prisma cobalt

[prisma cobalt]

i have no idea its up to you
first solution is probably sends 2 pieces of data per transfer
the second only one

[latent socket]

😒 noice

[trim moth]

@latent socket
@prisma cobalt
If the received data is "/ADM" , DON'T APPEND (i.e. dont do buffer += data)
Instead, do whatever you want to do with it.
Else (i.e. received data is not "/ADM") put it in the file
That's based on what yiu told me about "/ADM" has a different function so that "/ADM" wont be appended

How does that sound

[latent socket]

hmm

sounds good

[trim moth]

For real? Or u kidding

[prisma cobalt]

?

[trim moth]

lmao i wonder if that could be the solution lol

[wicked sable]

hi i need help with requests

[next jasper]

Just ask your question :)

[wicked sable]

for example website doesn't loading fully https://www.footlocker.sg/en/all/new/

[next jasper]

What do you mean?

[velvet lichen]

code i got on the internet

[latent socket]

Not kidding actually it can work

I will try

[trim moth]

Yeah

[trim moth]

lmao this made my day

[latent socket]

You are very active and friendly☺️ ☺️

[trim moth]

Thanks! Appreciate it

It was my pleasure to help you

[jovial tide]

does anyone know how to make a remote desktop gui?

i saw you typing

píng me if anyone got a anser, please

[wide path]

I have a very simple system, now this uses time trigger so every 2s a data is sent to the other system. Is there some sort of default/ best interval for this type of system ? I was thinking maybe 4s is good enough because the temp of the sensor doesnt change much so it is kinda pointless to send data every 2s. This is the first question. For my second question what If I used a mix of event and time trigger. Lets say 500 is low and 550 is high. I can have it so it will start sending data every 2s when the value of the sensor is at 550 only. Is it better to use only time/event trigger or a mix system ?

[prisma cobalt]

id say its better to use an event trigger system, simply because it reduces network traffic since it only updates when it needs to. However it would be good to maybe send the current time every x hours just to confirm the connection and the mchine is working fine

[neon kiln]

how i can use like " if end " in python ?

i hope you understand what i went 😂 >

[wide path]

@prisma cobalt can you provide a more in depth answer or a paper where I can read more about why it should be trigger system in this case because from what I found it usually mixed system works it has the trigger part but also the time part ofc it introduces its own drawbacks, or maybe I am completely wrong and dont know what I am talking about. Lets say I use a trigger system when the temp is over 550 and stays wont it trigger the event over and over again because it meets the condition, and yes timed trigger sends data based on the interval that was chosen, but the system is ready for that because it is expecting some sort of data. Again maybe I am completely wrong on this, if anyone else want to correct me feel free I am trying to learn anyway

[mortal sluice]

Remote Desktop GUI?

I suppose it can be done with tkinter, but the actual GUI is opened through a command sent over network connection

[prisma cobalt]

I can’t sorry, I’ve never thought about a problem like yours before

[velvet lichen]

what is base64??????????????

[clear bobcat]

It allows to code binary data into text representation

[bitter agate]

hi, i need to make a chat in django, can some one help me?

[bitter agate]

?

[trim moth]

@bitter agate i dont have much experience in django, but i can help set up a chat app using sockets if thats what you want

[bitter agate]

yes that would be great

[trim moth]

Noice

So have you started something yet?

lmao

[ember ledge]

can anyone help me how can i make a free server??

[prisma cobalt]

aws or heroku or something silimlar

[ember ledge]

ok

[velvet lichen]

what its used for?

is that how should i do it?

[velvet lichen]

nvm i screwed it up.... forgot to use sys

[cerulean knoll]

Hey this will be a javascript question

Why am i getting undefined in console log?

[exotic condor]

Hello 🙂 This is a Python server, so Javascript is considered off-topic here, I'm afraid. But feel free to ask about this in one of the off-topic channels.

!ot

[errant bay]

Off-topic channels

There are three off-topic channels:
• #ot0-psvm’s-eternal-disapproval
• #ot1-perplexing-regexing
• #ot2-never-nester’s-nightmare

Their names change randomly every 24 hours, but you can always find them under the OFF-TOPIC/GENERAL category in the channel list.

Please read our off-topic etiquette before participating in conversations.

[elder spoke]

Is it possible to connect two clients with voice chat using socket?

[prisma cobalt]

yeah

[trim moth]

Intresting, imma go look into that lmao

[opal orbit]

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((HOST, PORT))
print(s)

def netWuff(sock:socket.SOCK_STREAM):
        res = sock.recv(2048).decode('raw_unicode_escape')
        print(res)
        sock.send(b'1\n')
        ret_str = b''
        res = sock.recv(8192)
        while res:
            ret_str+=res 
            res = sock.recv(8192)
        sock.close()
        return ret_str

This while loop aint working lol, i wanted something that just keeps receiving until stream is empty -.-

Is there a way in py to make that work?

[clear bobcat]

How about flag MSG_WAITALL? https://manpages.debian.org/buster/manpages-dev/recv.2.en.html

!d socket.socket.recv

[errant bay]

socket.socket.recv

socket.recv(bufsize[, flags])```
Receive data from the socket. The return value is a bytes object representing the data received. The maximum amount of data to be received at once is specified by *bufsize*. See the Unix manual page *[recv(2)](https://manpages.debian.org/recv(2))* for the meaning of the optional argument *flags*; it defaults to zero.

Note

For best match with hardware and network realities, the value of *bufsize* should be a relatively small power of 2, for example, 4096.

Changed in version 3.5: If the system call is interrupted and the signal handler does not raise an exception, the method now retries the system call instead of raising an [`InterruptedError`](https://docs.python.org/3/library/exceptions.html#InterruptedError "InterruptedError") exception (see [**PEP 475**](https://www.python.org/dev/peps/pep-0475) for the rationale).

[ember ledge]

can anyone help me how can i make a free cloud gaming server

[ember ledge]

i have then you say how can m ake

@ember ledge

[trim moth]

you just gotta have a host machine to actually run the game and then send the player inputs from the client side to the host server and somehow make it so that the received player inputs are given in the game running on the host server. and while all that is going on, the video of the game running needs to be streamed on the client device. the sending inputs and streaming part can be taken care of by sockets since there's a way to stream video over sockets too, the part i don't have much idea bout is of giving the received inputs to the actual game. but there are limitations like lot of lag, not sure bout the video quality or frame rate of streaming and stuff

dayum i finished a whole bowl of chips just typing that

[ember ledge]

can anyone help me to make a cloud gaming server??

[prisma cobalt]

ThyBro told you how?

[ember ledge]

i donot knpw how to make

please help me

[prisma cobalt]

@ember ledge I'm not friending you, talk here on the server

[ember ledge]

tell me how to make a server

[prisma cobalt]

You need to first receive player input

[prisma cobalt]

There's a basic socket server code in the pins of this channel

[ember ledge]

tell me how to do

@prisma cobalt

[prisma cobalt]

Go to the pins of this discord channel and look at the 2nd one

Thats a basic server

[ember ledge]

so what i will do next

[prisma cobalt]

Now you've found the code, learn python socketing with that as an example

There are resources on that pin

[trim moth]

@ember ledge try googling about how people set up minecraft servers

[ember ledge]

i want my own server

not mineraft server

[trim moth]

ik

all that differs in your idea is the game you want to run pretty much all the other things remain the same

[prisma cobalt]

File server? Game server? Email server?

[ember ledge]

game server

[prisma cobalt]

In python? Good luck mate

[trim moth]

bruh

lmao

[inland rampart]

what do you mean by a "game server"?

you are developing a game, and you want it to be a multiplayer one with a server?

[ember ledge]

yes

i want to upload that game in my server

@inland rampart

[inland rampart]

Upload? So it's not a game you're developing? how is that Python-related though?

[ember ledge]

i donot know

i am facing issue so i am asking

[prisma cobalt]

Wait, are you or are you not making your own game?

[latent socket]

[ember ledge]

i am making my own game so i want to make online

so for that i want a server

[latent socket]

[ember ledge]

so how to make a server for free

[prisma cobalt]

Okay you could make a script in python to handle clients

[latent socket]

Best one is aws

@ember ledge

[prisma cobalt]

Your gonna have to host it yourself or get very limited connections/options

[ember ledge]

please can you give me a video so i an makec

[latent socket]

[prisma cobalt]

I've given you socket resources AND an example code

Please use those

[latent socket]

[ember ledge]

where i will use

and how to make

[prisma cobalt]

What? You need to learn socketing first, I've given the you the resources to do that (realpython tutorial link in the pin I mentioned earlier) and there's an example of a client server program

Learn python sockets first if your doing it in python

Which I assume you are since your asking here

[ember ledge]

ok

after by using that where i will run

and what output it will give

and where to run

[prisma cobalt]

Run it using python, the output is whatever you print, run it where you want

I'm getting the feeling that
A) you don't know python at all
B) your not listening to me when I say learn python sockets and instead your using the code without knowing what it does

[ember ledge]

bro i have my own team of game developing i have artist and animators coders and all website devlopers

so i am the owner so i cannot make a server so i am taking help from you

[prisma cobalt]

As the owner will you be writing the code?

If not then anything I tell you here is pointless

[ember ledge]

no other person is there

i am the story maker

and scripting

[prisma cobalt]

What's the point of me telling you then, on this python server, how to set up a socket server that handles multiple clients if you don't know python and aren't interested in learning?

[ember ledge]

bro error is coming during running in vs code

getaddrinfo failed these error is coming

[prisma cobalt]

I thought you weren't coding?

[ember ledge]

i am a coder but i use html and css and flask all these for website development

[prisma cobalt]

So not python?

[ember ledge]

i am learning python

[prisma cobalt]

Does the coder on your team know python?

I assume your doing this in python

[ember ledge]

but website development i know all parts

[ember ledge]

he knows

[prisma cobalt]

That's great but not very helpful in this situation

[ember ledge]

he is making in unity

so he knows c#

[prisma cobalt]

But python?

[ember ledge]

yes

he knows

[prisma cobalt]

Okay so if he's know python and he's the coder then he should be asking not you lol

He's the one implementing the server scripts

He's the one doing the code

[ember ledge]

he is not incharge of making a server

so he is busy in coding

he cannot make a server

so i have to make

tell how to run

[trim moth]

i suggesting completely neglecting python here

[prisma cobalt]

[ember ledge]

[prisma cobalt]

Python is quick and easy but for a full game will be hard to use

[trim moth]

he's not a bit interested in python and just wants a way to get his game on a server

[ember ledge]

yes

[prisma cobalt]

Are you hosting yourself?

[ember ledge]

to the point answer

[trim moth]

lmao

[ember ledge]

yes i want to host my game in that server

[prisma cobalt]

No no no, sure your hosting your game but the machine that your hosting on. Is it yours?

[trim moth]

and is it a server or your PC you're hosting on

[prisma cobalt]

Like do you physically own it?

[ember ledge]

yes i have my own pc

so i want to host there

[trim moth]

noice

[ember ledge]

ryzen 5 4600h,8gb ram.512 gb ssd,gtx 1660 ti 6gb graphics dedicated and 3 gb radeon graphics intergrated

[prisma cobalt]

The game won't be run in the server, that's the clients job, all the server does is manage connections and sending data between points counting data about each client

[ember ledge]

only 2 weeks old laptop

[trim moth]

wow

[ember ledge]

so tell what i have to make

and do for that

[prisma cobalt]

What type of game is it?

[trim moth]

look, dude, the connections your game accepts and the data it sends to the clients is supposed to be completely in the game code, so make your programmer take care of that

[ember ledge]

it is a storytype game

[trim moth]

as of running it on a server, it's just to provide the ip and the port for the clients to connect

[ember ledge]

so how to make that tell me

[prisma cobalt]

The clients send data
This could be keyboard input
This could be world positions
This could be a JSON object

The server receives this data
And it send it each client connected, then the clients use this data to update their own screens, reflecting what has happened

This is a job for your coder

[trim moth]

the code and the mechanics of the way the game interacts with the host machine to manage client connection is dependant on the networking code your programmer writes

[ember ledge]

so what i have to do to make the server

[prisma cobalt]

FFS listen to us instead of spamming the same question :(

[ember ledge]

after the game ready can you host the game on the server

[trim moth]

just don't make the server, make the game in such a way that it makes the machine it's being run on, the server

nooo nooo

shit i messed up

anyways, gotta go for dinner lol byeee

[prisma cobalt]

To make the server you need CODE, you've said your not doing the code but your coder is

We are not gonna just write it for you, your coder needs to do his networking research. He needs to accept connections and manage them
That's all there is

[trim moth]

on point my man

[ember ledge]

if i giev you all my game codes can you make the server for me

[prisma cobalt]

why would i do that for you? besides i dont know C# very well which is what your coder is using with unity.

[ember ledge]

ok

[prisma cobalt]

this is a job for your coder to implement @ember ledge you cant do any more

[ember ledge]

my coder cannot do

and i also cannot do

[prisma cobalt]

and bear in mind that this task is a huge one, its not easy implementing networking

[prisma cobalt]

cant he learn how?

[ember ledge]

no he cannot

[prisma cobalt]

well then your stuck, unless you pay someone to do it for you which will be expensive

[ember ledge]

ok

[trim moth]

try hiring someone else lmao

[ember ledge]

ok

[dim blade]

Hello guys, I want to ask if there is any module in python which requests a url, and download all the content including images, not only html.
From what I know requests module only saves the html content

[inland rampart]

Selenium can do something like that (it's pretty much an entire browser you control from Python).

You can also just, well, also grab all the links on the page, but that won't help with content that gets loaded up using JS, and selenium would.

[velvet lichen]

hello networking people

[prisma cobalt]

ello

[fair dock]

Is there a scapy discord?

[trim moth]

yo

got any memess?

lmao

[opal orbit]

sock.recv(4096) gives me BlockingIOError: [WinError 10035] A non-blocking socket operation could not be completed immediately when using nonblocking connection, so how to do recv from such object?

[velvet lichen]

bruh

i found out that kahoot stole a loop from garageband doe

[bold pond]

hi does anyone know how to make a client-client interaction via a server ofc

[errant bay]

Hey @ember ledge!

It looks like you tried to attach a Python file - please use a code-pasting service such as https://paste.pythondiscord.com

[ember ledge]

fuck you

[velvet lichen]

lol

[faint hemlock]

be nice to the bot 😦

[trim moth]

lol

[long flume]

Get ready to embark on the journey of a lifetime. Help out your favourite Money Heist characters and get better at competitive coding while you're at it.
Register now and pledge your allegiance to the Dali mask!
The Professor's counting on you.
Registration link: https://register.dscsrm.com/

[prisma cobalt]

Please shhh, this is networking channel not somewhere to advertise whatever bullshit that is 🙂

[trim moth]

Wot is dis?

Oh, y u do dis?
Don't do dat here pless

[desert ridge]

Any of yous have any idea why my (first) Flask app isn't showing up on anouther computer within the same local (VPN) network?

[prisma cobalt]

no idea how to use flask but those ip's on the left mean "localhost", they are local ips and another system connecting to that ip would just cause them to connect to themselves

[desert ridge]

Yes, I'm trying to connect externally to the IPv4:5000

[kind furnace]

@desert ridge server is windows / linux, and what is client?

[dense spruce]

goodday, looking for recommendations on books/online resources on sockets

or is man pages as good as it gets

[ember ledge]

import requests
from requests.structures import CaseInsensitiveDict

url = "https://discord.com/api/v8/users/@me/settings"

headers = CaseInsensitiveDict()

header_names = ["authority", "method", "path", "scheme", "accept", "accept_encoding", "accept-language", "authorization", "content-length", "content-type", "cookie", "origin", "referer", "sec-fetch-dest", "sec-fetch-mode", "sec-fetch-site", "user-agent", "x-super-properties"]
header_content = ["discord.com", "PATCH", "/api/v8/users/@me/settings", "https", "*/*", "gzip, deflate, br", "en-GB", "TOKEN", "79", "application/json", "__cfduid=dd3da19ce3fd060f9f486ff27f55606ff1618892516; __dcfduid=df64a4be6c464b739ed58af8bd429b25; locale=en-GB", "https://discord.com", "https://discord.com/channels/@me/775841711812902922", "empty", "cors", "same-origin", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) discord/1.0.9001 Chrome/83.0.4103.122 Electron/9.3.5 Safari/537.36", "eyJvcyI6IldpbmRvd3MiLCJicm93c2VyIjoiRGlzY29yZCBDbGllbnQiLCJyZWxlYXNlX2NoYW5uZWwiOiJzdGFibGUiLCJjbGllbnRfdmVyc2lvbiI6IjEuMC45MDAxIiwib3NfdmVyc2lvbiI6IjEwLjAuMTkwNDIiLCJvc19hcmNoIjoieDY0Iiwic3lzdGVtX2xvY2FsZSI6InB0LUJSIiwiY2xpZW50X2J1aWxkX251bWJlciI6ODI3NTAsImNsaWVudF9ldmVudF9zb3VyY2UiOm51bGx9"]
print(len(header_names))
print(len(header_content))

for i in range(0, len(header_names)):
    print(header_names[i] + " is " + header_content[i])
    header_names[i] = header_content[i]

data = """
{"custom_status":{"text":"diggytest6","expires_at":"2021-04-22T03:00:00.000Z"}}
"""

resp = requests.patch(url, headers=headers, data=data.encode("utf-8"))

print("\nRESPONSE: " + str(resp.status_code))

Why does this return "Unauthorized" ?

note: i put my token in place of "TOKEN"

sorry i don't know if this is the right channel to post

[molten anchor]

Any idea if it's possible to use Streams in a Client of the HTTPX library?
Not sure if it actually has anything to do with this channel

[spring wigeon]

false alarm* my bad

[ember ledge]

my token isn't there is it?

[spring wigeon]

my bad 😬

[ember ledge]

but thanks for being a bro

sorry for sounding rude, i didn't mean to, i only realized it now, thank you for worrying

[spring wigeon]

You didn't sound rude at all, no worries.

[bold pond]

hi does anyone know how to make a client-client interaction via a server ofc

[abstract crest]

With localhost only the machine that you are hosting can connect to the server

To host to the VPN you need discover what is your pc IP in the VPN

[abstract crest]

So you host your app in this IP

[desert ridge]

both client and server are unfortunately Windows

I was trying externally connect to the IPv4

[abstract crest]

.

[abstract crest]

localhost its only your machine

you cant host on localhost and access trough other devices

[desert ridge]

doesn't me broadcasting the app on 0.0.0.0 make it visble externally I thought?

I've also tried broadcasting on the actual IPv4 of my machine. Is there anything I've missed?

[kind furnace]

@desert ridge with flask running, can you try to telnet <windows_ip> <fask-port-number> # from the client

[desert ridge]

Appologies for the delay, VPN issues.

It's saying that telnet isn't reconised... is it a program I need to download/install?

Apparently I can't install telnet:

[abstract crest]

nope, broadcasting on 0.0.0.0 or 127.0.0.1 or localhost makes its only visible to the self machine

You need host on 172.20.2.101

to make visible to other devices

[prisma cobalt]

python socket servers use 0.0.0.0 to allow incoming connections from anywhere, be it local devices or external

127.0.0.1 is localhost only like you said

[abstract crest]

so i can access from my phone that is in the same wifi that the host machine only typing 0.0.0.0 ?

and, being in japan, i can access from my phone the host that is in the US only typing 0.0.0.0?

[prisma cobalt]

well your public ip factors into it

[tough dagger]

Guys guys

It's for binding network interface not for connecting to it

[prisma cobalt]

exactly

socket.bind((0.0.0.0, port)) "bind" with "0.0.0.0" allows incoming connections

[storm bison]

How can I create a ftp server with host url/address?

So I can give the host address and credentials to someone, so they can upload files to it

And the other person doesnt have to be on the same internet as us

[rare bough]

is this a good place to look for a help with communicating via bluetooth?

[ember ledge]

hi

[trim moth]

just give us a try lmao

[trim moth]

ello

[split idol]

hey i have a question, im trying to pass an image from me client to the server.
i wrote the function:

def send_image(received_socket, file):
    print('Sending...')
    byt = file.read(1024)
    while byt:
        print('Sending...')
        received_socket.send(byt)
        byt = file.read(1024)
    file.close()
    print("Done Sending")
    received_socket.shutdown(socket.SHUT_WR)

now this works fine, apart from the last line. without it sending an image doesn't work. with it i can't send other messages after the image which is very necessary for a chat app

if anyone got a fix/workaround it'll be much appreciated

[trim moth]

try socket.close()?

[split idol]

i dont want to close the socket

[trim moth]

oh

[split idol]

i want my chat app to keep working after the image is sent

[trim moth]

calling socket.shutdown() indicates that the caller (the client or the server) has no more data to send and the socket is basically closed

https://docs.microsoft.com/en-us/windows/win32/winsock/graceful-shutdown-linger-options-and-socket-closure-2?redirectedfrom=MSDN

so just dont't call it

and continue with you chatting code

lol

[split idol]

without it sending an image doesn't work

not only the servers stays in an infinite loop

but the image it gets is corrupted, cant be opened

[trim moth]

whoa

is that in the same messaging loop as the messages?

coz once a file is transfered to the receiver 1024 bytes at a time and written to drive, it does'nt matter what happens with the sockets or the image (since the image is received and written on the receiver's side) right?

and if the code continues into the message sending/receiving loop after sending the image, i dont see how it'd enter a infinite loop

[split idol]

i found this code online. the explanation behind shutting down the socket is
Client need to notify that it finished sending, using socket.shutdown (not socket.close which close both reading/writing part of the socket):
so without it the server is going to keep trying to recv an image, getting stuck in an infinite loop. and when i do shut it down i cant continue to use it...

the output also is very weird

file = open(f'data/image#{3}.png', 'wb')
print("Receiving...")
byt = sender_socket.recv(1024)
while byt:
    print("Receiving...")
    file.write(byt)
    byt = sender_socket.recv(1024)
file.close()
print("Done Receiving")

and the output is:

Receiving...
Receiving...
Receiving...
Receiving...
Receiving...
Receiving...
Receiving...
Receiving...

it doesnt get stuck inside the while loop but it never leaves it either? (this is without shutting down the socket)

[trim moth]

so in the end of the image (i.e. when the image sending is done from the client side), send a string like "done" or something on receiving which the server would stop recv and image and avoid getting into the infinite loop

like the special keyword would tell the server to stop receiving/expecting and thus, the server should stop

like,

if received_data == "done_sending_image":
  break 
  (or leave, or whatever)
else:
  do whatever you want to do with the data
```or something similar if you get the idea

makes sense?

[split idol]

k ill try that out

[trim moth]

lol

do tell me if that works or not

[split idol]

huh

weird

even if im sending "done" it recieves nothing

i just changed the check slightly to check if it gets nothing, if it does break

and it works

[trim moth]

wierd indeed

[errant bay]

Hey @trim moth!

It looks like you tried to attach a Python file - please use a code-pasting service such as https://paste.pythondiscord.com

Hey @trim moth!

It looks like you tried to attach a Python file - please use a code-pasting service such as https://paste.pythondiscord.com

[trim moth]

f u

[errant bay]

Hey @trim moth!

It looks like you tried to attach file type(s) that we do not allow (.zip). We currently allow the following file types: .gif, .jpg, .jpeg, .mov, .mp4, .mpg, .png, .mp3, .wav, .ogg, .webm, .webp, .flac, .m4a.

Feel free to ask in #community-meta if you think this is a mistake.

[trim moth]

let it be

[trim moth]

file = open(f'data/image#{3}.png', 'wb')
print("Receiving...")
byt = sender_socket.recv(1024)
while byt:
    print("Receiving...")
    file.write(byt)
    byt = sender_socket.recv(1024)

    byt = byt.encode()
    if byt == 'done':
      break

file.close()
print("Done Receiving")

lmao

[lost hatch]

Is there a manual equivalent of socket.gethostbyaddr? My issue is that when doing socket.getfqdn, I am unable to in any way time it out, and I dont want my program(s) to get stuck checking an fqdn for 14 seconds (which is the highest ive been getting w/ my dataset).

Please @ when responding.

[trim moth]

@lost hatch just start a timer lmao and if it exceeds 14 seconds, call exit()

or close the socket

[lost hatch]

socket.getfqdn utilizes socket.gethostbyaddr, so I cant manually close the socket, unless I find out a manual way to do socket.gethostbyaddr where I have that type of control.

[opal orbit]

import socket

HOST, PORT = '', 8000
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((HOST, PORT))
s.listen()
index = open('index.html', 'rb')

while True:
    slave, addr = s.accept()
    slave.sendfile(index, 0)
    print(f'[*] {slave} : {addr}')
    data = slave.recv(8192)
    print('[*]', data.decode(), '[*]')

What am I missing? Wanted do the simplest http server using sockets

ERR_INVALID_HTTP_RESPONSE

[dense spruce]

are you getting that error when u run it? It's running fine here

[tough dagger]

Ummm end of transition was supposed to be signified by empty send (0bytes). Alternative is to have it prefixed with size or to make some kind of protocol over TCP or use existing one. Why while loop is there well yeah TCP is stream but one still gets it like a message it might be split or merged by stuff on the way but still it's bit tricky as it would change latency. So it depends on the network devices, APIs and implementation of those. In raw protocol one expect the message to be slit into packets and potentially fragmented when it's being sent through network. TCP is still over that so it guarantees a sequence and retransmission (to a point) so you get stream of data and shouldn't depend too much on the actual size and number of messages.

That being said it's highly pathological to get messages of few bytes. But it may happen just usually it means that user sends small chunks and forced small send window or forced merges off. Plus TCP reorders stuff and if it's for latency well it might not be the best protocol for such short messages or might be okay.

[tough dagger]

Umm your missing the http protocol part which at http 1.0 is pretty much prefix before the data.
https://en.m.wikipedia.org/wiki/HTTP_message_body.
IE minimally STH like:

HTTP/1.0 200 OK\r\n\r\n

Content-type might be nice thing to have for a client to know that the heck it had to do with it

[tough dagger]

Ummm frankly it's been pita and one may do that on separate thread and ignore the results but I don't know if it's solved or not in some compatible ways.

[errant bay]

Hey @balmy ember!

It looks like you tried to attach a Python file - please use a code-pasting service such as https://paste.pythondiscord.com

[tough dagger]

Ummmm direct connection is required so yeah host has to have some port available unless you want to put FTP over something like VPN with third-party maybe with umm no idea if it's still popular back in days I used hamashi and if worked. But the first part about writing FTP server well I didn't bothered to check what is the minimal set of commands to support to be useful but something like get or put seems to be minimal. Question remains whether some client will live with that or yap about missing ls and other stuff

Will see if I'm helpful here hehe

I'm not so much into network programming as in basics but why not you will just smack me if I say nonsense.

[ember ledge]

Does anyone use UDP socket?

[prisma cobalt]

they have a variaty of use cases

tcp is more common tho i think

since its lossess to an extent

[tough dagger]

Please try to be more refined in questions. Like anyone here ? Or anyone in umm some scope ? Or are you inquiring someone for help. Hehe 😊
Generally for the use it's almost raw IP frame so well you have more control over pockets and more responsibility as well. Stuff gets nasty here, but you get finer control if latency is killing you

Plus multicast and stuff like that

[trim moth]

ooooh sounds noice, only done tcp stuff till now tho
Is it like most things that can be done using tcp can be done using udp too?
rather its must be just a choice if yiu want to use tcp or udp

[ember ledge]

i get the error

on socket.io.js:1
pls help

[trim moth]

share code?

[atomic osprey]

What are the headers set in CORS and how do their values affect things?

[gloomy root]

They only apply to browsers really

They control how the browser can interact with responses from a server

E.g. The methods its allowed to read data from, headers allowed etc...

[vapid swift]

i was trying to make a script that will download and run another script but using the requests library i cant figure out how to get the data from the .py file?

[cold sphinx]

Hi, im trying to make a simple get request to this website however i keep getting a 403 error.
I used postman to get the headers.

        url = "https://www.games-workshop.com/en-GB/Home"

        headers = {
            'cache-control': "no-cache",
            'postman-token': "e7e7af22-60e4-8aed-f0df-9084abfe4a2d",
            'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36'
        }

        response = requests.request("GET", url, headers=headers)

        print(response.status_code)

Any reason why this is happening. I also tried copying all headers from the network tab and nothing happened.

[dense spruce]

once you have it, isnt it just an open() read()?

[vapid swift]

i got it to work now it was a server side issue on the server hosting the file

[dense spruce]

👍

[rotund grove]

does anyone know how to operate ec2 instances?

i'm trying to run a flask app on one but it's not connecting through HTTP

[pure furnace]

I'm gonna go to sleep now, but leaving this here overnight:
How could I go about making a web dashboard so my bot can be controlled from there?
Please ping me if you can help, hope this doesn't break any rules lol

[cold sphinx]

something like flask ?

[void wraith]

a 403 error means forbidden

are you allowed to access the resource?

The HTTP 403 is a HTTP status code meaning access to the requested resource is forbidden. The server understood the request, but will not fulfill it.

[cold sphinx]

Yeah its just a website

[void wraith]

hm

it looks like the request is being understood but you're just not allowed access, maybe it knows it's a request via python?

have you tried without the headers?

[cold sphinx]

Yeah same errors

if its being blocked ill have to figure out away around it

[void wraith]

hm yea good luck with it 😦

[limpid bay]

Can someone recommend a great solution to hosting a FastAPI on multiple servers so the load can be balanced and if one goes down the other can still handle the requests?

[lament dagger]

nginx , HAProxy ?

[lament dagger]

Or, the native loadbalancer your cloud provider is offering

[tough dagger]

Ummmm certificate any by perhaps ? Check with some network sniffer like wireshark on what is being sent during ssl handshake

[thorny talon]

How to get an OAuth2 authorised session in aiohttp?

[brisk comet]

Hi, I am running an async TCP server to control a few switches remotely. When I send a command to a switch, the switch sends back an acknowledgement message.

The issue is that I can't tell which device is sending the acknowledgement message when I send multiple commands.

I tried using the transport object and peername tuple but the issue the devices are under a NAT so that info doesn't help. What attribute in the socket can I use to figure out which device is sending the acknowledgement?

[trim moth]

Decide based on the content of the acknowledgement message that which device it is

?

[brisk comet]

That won't work. Each device has multiple switches. If I turn ON switch number 1 for all the devices then I will get the same acknowledgement message from all. And the device is a black box. I can't change its firmware :/

When I send a message using the device's transport object that is stored in a dict then the right device receives it but I am unable to identify the device when it sends the acknowledgement message. Is there something I can use in the transport object?

[cold sphinx]

I think cloudflare is blocking the request

[empty rune]

anyone know a python curl library because PYcURL is python 3.8 and i have python 3.9

[frozen drum]

why do you need a library?

you can't use something like subprocess.run() ?

[empty rune]

that worked
now just to figure out how to parse xml -> python class structure

(if this is wrong channel point me to the right one)

[frozen drum]

https://docs.python.org/3/library/xml.etree.elementtree.html

[empty rune]

because curling the api gets this
<NATION id="walksanator">\n<NEXTISSUETIME>1619502040</NEXTISSUETIME>\n</NATION>\n

i hope it parses right

wait

how do i get the nation
because i dont think you can acess a member of a class via a variable

re-phrasing
how do i acess a element in a python class by a string variable

[gloomy root]

getattr

[ember ledge]

udp proxy server

I want to create a proxy server.
But it hasn't been realized yet.
who can help me?

1. Quickly modify the data package.
2. Port multiplexing.

[empty rune]

#web-development message (cross channel posting because it may fit here but i dont want to spam the information which was allready posted)

[clear rock]

does socket have a readexactly method? i want to receive a specific amount of bytes, and the size is given by the header

[gloomy root]

mmm not really because it's fairly low level

it'd just be a while loop though reading until the amount is satisfied

[clear rock]

oh

ill do that then

[tough dagger]

Ummm it's somewhat possible to a quite small sizes if you have control over TCP or over UDP. But normaly you write something that can tell where the message starts and ends within virtually infinite stream - that's the approach over TCP

[clear rock]

hmm well the maximum amount of bytes is going to be around 12k

[tough dagger]

It's too big

[clear rock]

yeah..

thats why i needed a proper method

buff = b""
while n > 0:
   b = self.client.recv(n)
   buff += b
   n -= len(b)
return json.loads(buff.decode())``` i dont think this is gonna work properly

[tough dagger]

Why not ? It will work but how do you know n ?

Send it first before the message

[clear rock]

alright

[prisma cobalt]

@gloomy root as well, you can recieve an exact amount of bytes with: socket.recv(number_of_bytes)

[gloomy root]

that depends on your configuration but yes it can

[clear rock]

that could receive lower bytes than that sometimes right?

[gloomy root]

though IIRC it's not garenteed

it reads upto that amount

but you dont get that amount garenteed

[prisma cobalt]

yeah my bad, shouldve said that as well lol

[clear rock]

how do i make headers again 🤔 like how would i get n

[prisma cobalt]

but @clear rock if you send a set sized message (header) (say 16 bytes) only containing the size of the next message you can recv exactly that size

so you recv the header first which is 16 bytes (always will be) then decode it and find the size of the following message

you get me?

[clear rock]

hmm yes

so i need to send 2 times, one for the payload and one for the header?

i check if it is 16 bytes and assign that value to n

[tough dagger]

It's just a stream so might be one send but you need to make the message somehow so either in buffer or by send

[clear rock]

oh, so BytesIO?

[tough dagger]

Or bytes

Sends over TCP may be merged but it's not guaranteed I think at least

[prisma cobalt]

thats one option, on the other hand you could have a set message size (say 1024 bytes for example) and if the message your trying to send is longer then that then you split it up and send multiple messages containing the original message

[gloomy root]

What are you actually trying to achieve here

[clear rock]

well

[gloomy root]

it's sorta sounding like you want a HTTP server rather than raw sockets like this

[clear rock]

i am making a simple multiplayer board game, and it works for windows clients, but i dont know why but linux client gets about 1400 bytes from the 12k

[gloomy root]

You should probably use a higher level system for this

[prisma cobalt]

ooo cross platform, interesting

[gloomy root]

if its just a board game HTTP is probably the easiest and most reliable

[prisma cobalt]

eh they could but sockets still work

[clear rock]

oh

[prisma cobalt]

altho it would be easier yeah probably

[gloomy root]

sure, but you're gonna end up doing HTTP style anyway

[prisma cobalt]

lmao

why reinvent the wheel then, use http or something similar

[clear rock]

so websockets?

[gloomy root]

Like data flow and data management with sockets is a masiveeeee pain in the ass

websockets would work yeah

[prisma cobalt]

😂 yeah

[gloomy root]

have one player essentially be the host, others be the client

[clear rock]

wait

i want server client connection :(

not peer to peer

[prisma cobalt]

thats fine too

[gloomy root]

thats what websockets are

websockets aren't P2P

[clear rock]

oh okay, i think sockets is more suited for P2P

[prisma cobalt]

theres some confusion i think, i gather vinam wants to use an external server instead of a player server

[prisma cobalt]

not at all

[clear rock]

cause my program works on localhost and local network fine

[gloomy root]

I think you might miss understand what P2P means

[clear rock]

[gloomy root]

everything network based is built around sockets

[clear rock]

the player hosts the server

?

[gloomy root]

P2P is client to Client with no server intermediate

[prisma cobalt]

okay im gonna give you a solution Vinam, give me a sec

[gloomy root]

we cant read that im affraid, use

!paste

[errant bay]

Pasting large amounts of code

If your code is too long to fit in a codeblock in discord, you can paste your code here:
https://paste.pydis.com/

After pasting your code, save it by clicking the floppy disk icon in the top right, or by typing ctrl + S. After doing that, the URL should change. Copy the URL and post it here so others can see it.

[prisma cobalt]

before i start i assume you have an external server your running yourself?

[clear rock]

yes, on a vps

[prisma cobalt]

yep okay

[tough dagger]

Depends what you want to do. For plain stream of message over some kind of protocol over TCP separated from app is not so bad. Dynamic languages are easy to write state machines or else nice switch case ladder of doom XD

[prisma cobalt]

this is how to circumvent port forwarding as well (for the clients, not your server):

[clear rock]

i was actually doing this in rust tcp but yeah i gave up midway and switched to python

[gloomy root]

You'd end up with about 500+ lines of code to make a proper socket system like that

speaking from experience

[clear rock]

welp

[gloomy root]

it takes alot of data management with raw sockets

HTTP and websockets is by far the simplest and easiest method

[prisma cobalt]

1. make each client connect to the server you have running
2. any data the server recvs, broadcast it to all other connections

if your using sockets:
have a set message size (x bytes)
keep recv/sending untill the message has been completely sent or recved

[clear rock]

oh, ill go try out http.. gotta learn it first

[prisma cobalt]

i dont think messages for a boardgame will be that big

[prisma cobalt]

okay man, your choice

[clear rock]

uh well its battleship

so messages are just 6 bytes

but

[prisma cobalt]

lmao

[clear rock]

when 2 clients connect

i need to board data to both

from server

[gloomy root]

just have the server echo the client message to the others

[clear rock]

thats like one 10 by 10 2 dimensional array

a bool and some more data

[prisma cobalt]

Yeah so not much data

[clear rock]

it becomes 12k bytes though

12163, specificially

or 12162, depending on the bool

[prisma cobalt]

If you already know the size of the message then why are you worrying?

I would use sockets in that case

[tough dagger]

9 TCP/IP packets is not end of the word.

[clear rock]

hmmmmm

i wouldnt even be worrying if i didnt get incomplete packets in a linux client , idk the reason but i want to know how it works for windows

[tough dagger]

It's assuming that 1420 (40 bytes for extra Linux headers) so TCP/IPv4 over Ethernet by default.

So yeah TCP over Ethernet slices stream at 1500 bytes minus protocols headers (IP and TCP)

[clear rock]

oh

[tough dagger]

So yeah that's why it comes to you chunked, but you shouldn't rely on that

https://labs.apnic.net/?p=1249

[clear rock]

but shouldnt socket.recv ensure that every packet is reached and then return the data?

[prisma cobalt]

You seem very knowledgeable @tough dagger lol

[clear rock]

or does it return each packet

[prisma cobalt]

Returns each packet

[clear rock]

oh damn

[prisma cobalt]

You can get sendall and you can implement your own recvall tho

[clear rock]

that explains it i guess

i am just receiving once

thinking .recv gonna give me full data 🥴

it worked on localhost so it never occured to me

[prisma cobalt]

Lmao

[tough dagger]

Localhost is not network really

[clear rock]

yeah...

[tough dagger]

It's a loopback device

It might go to driver and back so has some latency but not real one

[clear rock]

so how do i send a header or something like that

so that i know how much to receive

and loop till i get that much

[prisma cobalt]

You already know the size of your data packet tho?

[tough dagger]

Send something small first or fit message in some buffer after header and then send

[clear rock]

it can be 12k or 6

12k in the start, 6 when the game is running

[clear rock]

wait, so like the first packet should be the header

and it should be small enough to fit in a packet

[tough dagger]

It will be chunked and sent, then it might be chunked on network device so you will get it in those (well in theory second end could merge it at random but it may affect latency). So on client you read what you have untill you read umm header and then you know the rest

[clear rock]

oh

[prisma cobalt]

so your saying surround the message in the header so you know when to recv and stop?

[tough dagger]

For the basics yeah

[prisma cobalt]

👍

[tough dagger]

It's what http actually do

Add feaking few lines separated with CR LF with message status, headers, and later on data, sometimes in header there's size

End is signified by read of zero size as the connection closes (logically or actually)

[gloomy root]

it either gives you a Content-Length or Transfer-Encoding: chunked or None in which case the default is 0

[clear rock]

do i send the header through the json?

hmm

[prisma cobalt]

no? wait what is that question, maybe im being dumb

[gloomy root]

This sorta goes back to the whole HTTP thing i suggested

[clear rock]

idk how to send a header

[gloomy root]

headers are just a virtual thing, not a direct TCP thing

[tough dagger]

Ummm you may by then it kind of beats the idea of fixed size item 😂

[gloomy root]

you cant/shouldnt put them in your JSON because you dont know if your JSON will be valid or not without reading all the data and at that point you dont need them

[clear rock]

yeah..

[gloomy root]

HTTP looking pretty 👌 rn

[prisma cobalt]

lol, didnt think i was going crazy

[prisma cobalt]

how would that work? a mixture of GET and POST requests?

im new to this side of networking

[gloomy root]

well no just use HTTP and WS

[prisma cobalt]

ah i dont know really how that works lol, something to research i guess

im more of a traditional socket person

[gloomy root]

you basically start with a HTTP request and it gets upgraded to WS via a upgrade call

[prisma cobalt]

whats WS?

[gloomy root]

websocket

[tough dagger]

Web socket is just a socket and bootstrap of http

[prisma cobalt]

ahh

[tough dagger]

Like mentioned

[prisma cobalt]

so its like normal sockets but in a special format?

[gloomy root]

well its bidirectional messaging for the web essentially

the advantage being that other people have already done the hard work of the body checking, size management etc...

so all you gotta do at the end of the data is just echo the messages your server is given to clients rather than directly checking it every time yourself

keeps stuff simple 😉

[prisma cobalt]

ohhh

but its build on top of sockets (with a HTTP aspect added)?

[gloomy root]

Just hide the messy logic under the hood

yes basically

[tough dagger]

Thx

[gloomy root]

has a great demonstration and break down

https://medium.com/platform-engineer/web-api-design-35df8167460

[prisma cobalt]

thx man

[clear rock]

def receive(self, size=default_buffer_size):
        buff = b""
        n = int.from_bytes(self.client.recv(8)[:4], "big")
        while n > 0:
            b = self.client.recv(n)
            buff += b
            n -= len(b)
        return json.loads(buff.decode())

    def send(self, *data):
        if len(data) == 1:
            data = data[0]
        final_data = b""
        final_data += len(data).to_bytes(4, "big")
        final_data += json.dumps(data).encode()
        self.client.send(final_data)
``` i still want to try work it out in tcp >.< this doesnt work though, json.loads(buff.decode()) here buff.decode seems to be returning nothing

hmm well i am getting this in server

oh wait

it is supposed to be len(str(data))

or len(json.dumps(data))

[tough dagger]

It's bit more tricky with dynamically sized first message you need to parse the end first and buffer it on the way if you're so into JSON but darn simple HTTP + JSON would make it so much easier you would get message not a stream.

Not saying against as hell play all hell loose why not. But pure TCP is basically like previously mentioned designed as a raw steam

The is no end virtually

So parse JSON makes no sense untill you say that from here to there is a JSON

HTTP uses double CR LF sequence to find the end of its header and start of get body in response

[clear rock]

[tough dagger]

Just think about the hustle you need to limit headers not to be a sucker the allows one byte transfers just to get server out of open ports XD

And maximum delayed time of byte transmission

Then you need to limit not just max header size but also possibly the rascalityness of a (ab)user and disconnected

Which is why I adviced for a prefix notation with a fixed size start at the very least, it's simpler that way

[clear rock]

😩

ahhh

ill just go learn http

[tough dagger]

Damn dude you're as stubborn as hell hahaha it's actually easier (to go with http) ..

Than what you do but stubbornness is a good quality if used right

Might as well sit till midnight till you get it working

Why the hell not if that is what you want to spent time on

[clear rock]

oh actually

i change my mind

the header thingy works for the data server sends in the start

but now the game doesnt work

like the small communication of 6 bytes aint working

oh i forgot to restart server it works now

done now time to check on vps

[fresh bear]

hi i have a question in socket i need to add my locale ip and port but how to do this in host like repl?

[tough dagger]

No idea 🤔😺
Guys ?! Panic mode 🤣

[prisma cobalt]

i dont think REPL allows connections...

[clear rock]

omg yes

it works on the vps too

thanks guys

[prisma cobalt]

they cant assign an ip to every REPL since there are thousands

[clear rock]

[prisma cobalt]

can i see your code @clear rock

[clear rock]

sure, ```py
def receive(self, size=default_buffer_size):
buff = b""
n = int.from_bytes(self.client.recv(4)[:4], "big")
while n > 0:
b = self.client.recv(n)
buff += b
n -= len(b)
return json.loads(buff.decode())

def send(self, *data):
    if len(data) == 1:
        data = data[0]
    final_data = b""
    data = json.dumps(data)
    final_data += len(data).to_bytes(4, "big")
    final_data += data.encode()
    self.client.send(final_data)```

[prisma cobalt]

thats the server?

[clear rock]

both actually

i use the same send and receive method for client and server

[prisma cobalt]

so your using normal sockets instead of HTTP?

[clear rock]

i have a common Network class

yess

[prisma cobalt]

nice

[tough dagger]

Yup minimal working set and if it works well 😊 it's enough

[prisma cobalt]

I always prefer lower level stuff over higher level stuff

Makes it more interesting

[ember ledge]

Hi,
is there anyone familiar with ZeroMQ (async pyzmq)?

[tough dagger]

Nope but had some time with ∅MQ

And nanoMQ both from C++

No idea if it's enough for what you need but well might give it a try

[ember ledge]

Thanks, unfortunately I need some sleep. Maybe we can chat tomorrow...

[ember ledge]

#discord-bots

[north igloo]

data, addr = sock.recvfrom(1024) will wait until receiveing a message until it will continue, is there any method to overcome this? Like check it, and if nothing is received at the moment continue?

[clear bobcat]

Check socket.setblocking

!d socket.socket.setblocking

[errant bay]

socket.socket.setblocking

socket.setblocking(flag)```
Set blocking or non-blocking mode of the socket: if *flag* is false, the socket is set to non-blocking, else to blocking mode.

This method is a shorthand for certain [`settimeout()`](https://docs.python.org/3/library/socket.html#socket.socket.settimeout "socket.socket.settimeout") calls:

• `sock.setblocking(True)` is equivalent to `sock.settimeout(None)`

• `sock.setblocking(False)` is equivalent to `sock.settimeout(0.0)`

Changed in version 3.7: The method no longer applies [`SOCK_NONBLOCK`](https://docs.python.org/3/library/socket.html#socket.SOCK_NONBLOCK "socket.SOCK_NONBLOCK") flag on [`socket.type`](https://docs.python.org/3/library/socket.html#socket.socket.type "socket.socket.type").

[north igloo]

thx

[trim moth]

lol the python bot is pretty vool

[clear rock]

  self.client.connect(self.address)
OSError: [Errno 106] Transport endpoint is already connected```

what does this error mean?

i am pretty sure my client is not connected already

oh nevermind i fixed it

[deft thistle]

Probably a silly question but...

How do you code ... on linux? I've been using Atom on Windows and running the scripts through powershell.

Now I'd like to use pyats, and that only supports Linux.

Spinning up a VM, using windows linux subsytem, it all seems pretty laborious?

[clear bobcat]

It's probably wrong channel
WSL is nice solution to start with Linux in my opinion

[trim moth]

lol start with zorin, it's basically windows of the linux world, then go on to something like manjaro or smthng and if you wanna advance, go arch, then voila! You're a linux chad

[storm bison]

Hi, I'm trying to connect to FileZilla Server, but when I start it, it keeps giving this error message:

And the options are greyed out, so I cant go to settings:

[storm saffron]

i mean if you want to actually 'code on linux' then you can use a VM or just boot into a linux distro

for coding in linux for compatibility or support, WSL is a good option

[fluid swan]

Hi, I want to write a program that will capture the network packets and save it to a differen
file every 15 seconds and parallely i want to do an operation(running cicflowmeter) on the "pcap" file. Can someone help me?

The code that I have written is below

from scapy.all import *
import datetime
import time
import threading

pcapfile = ""

def threadWork():
    x = datetime.datetime.now().strftime("%m%d%Y%H%M%S")
    global pcapfile
    pcapfile = x + ".pcap"
    csvfile = x + ".csv"
    record = AsyncSniffer(iface=interface, store= False,prn= packet_filter, timeout=waitingTime)
    record.start()
    print("Generating your pcap file, hold on")
    while(record.running):
        continue
    subprocess.run(["sudo","cicflowmeter","-f",pcapfile,"-c",csvfile])

def packet_filter(packets):
    wrpcap(pcapfile, packets, append=True)

# sniffer("enp0s3")
interface = "enp0s3"
waitingTime = 15

while True:
    lagging = threading.Thread(target=threadWork)
    leading = threading.Thread(target=threadWork)
    lagging.start()
    # time.sleep(waitingTime-2)
    lagging.join(timeout= waitingTime)

    leading.start()
    # time.sleep(waitingTime-2)
    leading.join(timeout= waitingTime)

But this code is missing packets of about 7 to 8 sec and I don't know how to minimize it.

Someone please help, I have to finish my final year project and this part is making it inefficient.

[clear bobcat]

I used nfqueue to capture (and modify on the fly) all outgoing packets

[fluid swan]

Ya here also I am able to capture the packet but on that packet I want to do some operations, which takes time and thus during that time neglecting all the packets

Here I want to run cicflowmeter command

[clear bobcat]

As far as I remember nfqueue will wait for your operation and add packets to queue

[fluid swan]

No but here I want that I can save the packet capturing for every duration of say 15 sec and with the captured packet I want to parallely process it to convert it into csv file using cicflowmeter

I don't want to miss a single packet

[clear bobcat]

Why do you capture them in parallel?

!pypi NetfilterQueue

[errant bay]

NetfilterQueue v0.8.1

Python bindings for libnetfilter_queue

[clear bobcat]

Check this example

from netfilterqueue import NetfilterQueue

def print_and_accept(pkt):
    print(pkt)
    pkt.accept()

nfqueue = NetfilterQueue()
nfqueue.bind(1, print_and_accept)
try:
    nfqueue.run()
except KeyboardInterrupt:
    print('')

nfqueue.unbind()

[fluid swan]

@clear bobcat ,yaye thank you for your help, but what here I am trying to ask is how to parallely capture the network traffic and at an interval and do some processing on it.

[clear bobcat]

The key is to understand that packets are being send in sequence, unless you have several network interfaces.

With nfqueue you can look at every packet and you can even send them to different queues, process in some intervals and so on. The main feature is to catch all packets, what you do with catched packets is your choice

[fluid swan]

Ooh thank u @clear bobcat ,I am seeing it in detail

[ember ledge]

how do i multithread client sockets? so i can establish multiple connections to different hosts at the same time

[urban stream]

how to start learning networking?

not only by using python, but as a whole

[clear bobcat]

You can start with understanding what the network is, why it was invented, next what is IP protocol, how it works, next you should take a look at UDP and TCP, differences between those two and possible usages

[urban stream]

got it. can you recommend me some resource? any book/website/or tutorial?

[clear bobcat]

Hmm, I think that I don't know any resources in English language

You have RFCs but it's not the good point to start

[urban stream]

oh, no problem. thanks for the help tho. uhmm, RFC??

[clear bobcat]

For example IP RFC: https://tools.ietf.org/html/rfc791

You can start with Wikipedia articles

[clear bobcat]

Article is from the times when dinos are all around the Earth lol 🦖

[urban stream]

at first i read updated on 1349 😂 😂 .

[obsidian escarp]

Hey @urban stream, "Computer Networks" by Andrew Tanenbaum is a book I can highly recommend. I've used it for my networking classes at university, it guide you quite well through all the network layers.

[urban stream]

thanks, i'll check it out.

[solar pecan]

how does anyone recommend getting started on python

[prisma cobalt]

by not asking a question unrelated to networking in the networking channel in the python server

[solar pecan]

sorry man

[trim moth]

lol try asking in #python-discussion

[iron phoenix]

how to use proxy ?

[kind furnace]

what do you want to proxy?

[gentle tusk]

Hi! I'm not sure if this is the correct topic but I have a question regarding the request module.

I want to upload an image to a url and get the html data afterwards

url = 'https://smallseotools.com/image-to-text-converter/'
files = {'media': open(r'image.png', 'rb')}
with requests.Session() as s:
r = s.post(url, files=files)
jsonn = json.loads(r.text)
print(jsonn)

this is the code im currently working with

[whole prawn]

What's the problem?

You can use ```py
jsonn = r.json()

also

[inland rampart]

(for context: they're in #help-coconut and the reason this doesn't work for them is because the URL they're making requests to isn't an API endpoint, but a normal page with a text form. That site might not even provide a public API, in fact.)

[light zealot]

Can you somehow host a socket server on a cloud platform for free?

like google cloud console, aws etc.
please do ping me if you're answering this

[prisma cobalt]

Aws works for free, little complicated to set up tho

[light zealot]

I don't have any idea, can you help me?

[prisma cobalt]

Ive been through the setup already with someone else, took more then an hour and im in school rn, maybe when i get home

[light zealot]

ah sure np

[prisma cobalt]

I would start by creating an ccount tho, yes you have to enter bank details but the first year is free

[light zealot]

So do I have to enter credit card details too?

I dont have a credit card, I'm 14

[prisma cobalt]

Yeah thats what i meant

you have to enter them to set up your account

maybe borrow a parents?

[light zealot]

they won't allow me

[prisma cobalt]

Then you cant use aws sorry

Ive never used heroku but maybe look into that

then theres the google one you mentioned or microsofts azure maybe? Idk how they work since ive never used them

[light zealot]

thanks for your time, I'll look into these

[trim moth]

lol i had to sneak out at night to get it when i did that

do look into something like heroku tho

[light zealot]

yeah I will

[light zealot]

probably not a good idea

[trim moth]

lol ik, but it just cost me a couple of pennies

[light zealot]

lol

[trim moth]

heroku is completely free tho

no catches there

[light zealot]

yeah, I had hosted my django website on heroku

probably a month ago

[trim moth]

noice

[prisma cobalt]

show us the code

huh?

[trim moth]

lmao

[radiant vortex]

Hi

I'm going to be creating a python program for networking. It will need to console port in to L2 and L3 Switches and do things such as send commands and catch outputs like a list with all the vlans in it.

Does anyone know the best way/ library I should look at/use

[whole prawn]

I've used paramiko for this kind of thing in the past but I don't recall it being particularly fun or easy tbh :https://github.com/paramiko/paramiko

[pure furnace]

How can I use the requests module to work with the mail.tm API?

import requests ## Imports the requests module.

headers = {}
payload = {
    "address": "[e-mail]",
    "password": "password"
}
json = '"address": "[e-mail]","password": "password'
r = requests.post("https://api.mail.tm/token", json=json)
print(r)

Currently got this, but keep getting error 400

I'm assuming it's just me, but idk what lol

please ping me if you can help, thanks!

[whole prawn]

Oh -I think your json string is borked

Just pass the payload dict to the json param

[pure furnace]

doesn't allow me to i think

I get error 401

[whole prawn]

Yeah

Which is the correct error if the user/pass is wrong

[pure furnace]

oh

lol

[whole prawn]

Which I guess it is?

[pure furnace]

waitwait wait i'm stupid

[pure furnace]

correct 🙂

thanks!

i'm being fucking stupid again

lol

[whole prawn]

lol np

[pure furnace]

import requests
import json

headers = {}
payload = {
    "address": "[e-mail]",
    "password": "password was 'ere"
}
making_account_thingy = {
  "address": "[e-mail]",
  "password": "helpmepls"
}
r = requests.get("https://api.mail.tm/me")
print(r)

Now I get error 401, why?

[whole prawn]

Quick look at their API doc suggests that you need to hit the /token endpoint to get a JWT and then include that token in a header for subsequent requests I think

One of these: https://api.mail.tm/docs?ui=re_doc#section/Authentication/apiKey

Not sure I see a /me endpoint in there either tbh

[pure furnace]

totally understand....

lol

OHHHHHHHH

fuck yeah this is the dumbass me

[rocky dirge]

so im trying to send requests with proxies using the request module. This is what I have so far

import requests


file1 = open('proxies.txt', 'r')
Lines = file1.readlines()
count = 0
# Strips the newline character
count = 0
    # Strips the newline character
for line in Lines:
    count += 1
ses = ("Line{}: {}".format(count, line.strip()))
url = "https://google.com"



r = requests.post(url,proxies={ses})
print('request sent')```

but for some reason I get

File "C:\Users\clutz\desktop\USB\bot visitors\Main.py", line 17, in <module>
r = requests.post(url,proxies={ses})

File "C:\Users[name]\AppData\Local\Programs\Python\Python39-32\lib\site-packages\requests\api.py", line 119, in post
return request('post', url, data=data, json=json, **kwargs)

File "C:\Users[name]\AppData\Local\Programs\Python\Python39-32\lib\site-packages\requests\api.py", line 61, in request
return session.request(method=method, url=url, **kwargs)

File "C:\Users[name]\AppData\Local\Programs\Python\Python39-32\lib\site-packages\requests\sessions.py", line 520, in request
settings = self.merge_environment_settings(

File "C:\Users[name]\AppData\Local\Programs\Python\Python39-32\lib\site-packages\requests\sessions.py", line 698, in merge_environment_settings
no_proxy = proxies.get('no_proxy') if proxies is not None else None
AttributeError: 'set' object has no attribute 'get'

[pure furnace]

import requests

headers = {
    "Authorization": "token is here"
}
payload = {
    "address": "[e-mail]",
    "password": "password is hereeeeeeeee"
}
making_account_thingy = {
    "address": "[e-mail]",
    "password": "helpmepls"
}
r = requests.get("https://api.mail.tm/me", auth=headers)
print(r)
print(r.text)

Hey, does anybody know why this doesn't work?

Please ping me if you can help, thank you!

[lucid lintel]

Trying to use PySerial to write to a STM32F7 disco board, I've basically got a number of this max length '2.1785714285714284' and want to be able to write that serially through USB, to drive a servo. The programme itself is running from a Linux 18.04 VirtualBox environment running Conda with a 3.7 env. I want to write 1 or 2 dependent on the values I'm pulling from my main code if any examples of my code are needed I can provide them. I've read the API but am unsure how to implement and use it properly, has anyone got any experience doing this before?

[primal moon]

my tun0 interface appears to only be operable as root (sudo curl google.com --interface tun0 works, but curl google.com --interface tun0 does not). I do not want my python code running as root. How can I make tun0 useable by non root users

[ember ledge]

There are several ways to accomplish this depending on what your needs are...

[pure furnace]

import requests
import json

headers = {
    "token": "mytoken"
}
making_account_thingy = {
    "address": "[e-mail]",
    "password": "helpmepls"
}
r = requests.get("https://api.mail.tm/me", headers=headers)
print(r)
print(r.text)

I've tried to do this to access the mail.tm api, but it says this:

<Response [401]>
{"code":401,"message":"JWT Token not found"}

I'm assuming it's an authorization issue, but I don't know how to fix it.

If you can help me, then please ping, thank you!

[opaque nymph]

Hello i need your help. I am working on server and i need auto discovery feature. So i need function, that scans the LAN and then it returns list of online clients (IN: IP of server/Network and mask of Network, OUT: list of online devices).
I found one, but it only scans LAN with /24 prefix. Thank you so much.
P.S. pls ping me, so i do not miss it thanks

[prisma cobalt]

looks like your definition of "help" is dissimilar to mine since it looks like you want other people to simply do it for you

[pure furnace]

what's the point in learning when you can have slavessssss

[opaque nymph]

No i looked it up but i couldn't found anything. So i am asking, if anyone did not found similar library.

[pure furnace]

??

[opaque nymph]

I could not found library/script, that would do the thing i want (described in my message) so i am just asking if anyone found on internet something like that or used script like that. (reply to @prisma cobalt )

[pure furnace]

Okay, you mean you couldn't find a library to do the thing described earlier.
However, your earlier message seemed to phrase it as if you wanted someone to do it for you.

just be careful with your wording next time

[opaque nymph]

Yeah sorry 😄

[pure furnace]

npnp

[prisma cobalt]

i cant think of any lib's but in look up "port scanner in python" and you should be able to glean some info from that

[pure furnace]

import requests
import json

headers = {
    "token": "mytoken"
}
making_account_thingy = {
    "address": "[e-mail]",
    "password": "helpmepls"
}
r = requests.get("https://api.mail.tm/me", headers=headers)
print(r)
print(r.text)

I've tried to do this to access the mail.tm api, but it says this:

<Response [401]>
{"code":401,"message":"JWT Token not found"}

I'm assuming it's an authorization issue, but I don't know how to fix it.

If you can help me, then please ping, thank you!

[prisma cobalt]

you really want to know the answer to this question lol, youve asked 5 times in the past 2 days

[pure furnace]

i just can't figure it out haha

i'm very stupid

literally nobody seems to know about the mail.tm API

[prisma cobalt]

i dont know the answer to your question so i havent been answering it lol

[pure furnace]

true true

[prisma cobalt]

no lol, for emails most people use smtplib

[pure furnace]

what's that?

[prisma cobalt]

a lib for sending emails in python

[pure furnace]

oooooooohhhhhhhhhh

does it have something for tempmails?

[opaque nymph]

I looked into docs, and it seems like you first need to generate api key with /token function and pass the account data there. Then use that token

[pure furnace]

i have

how can I use the token in later requests though?

[opaque nymph]

It should (?) be enough to do it on the start of the program.

[pure furnace]

hm, okay, thanks!

[opaque nymph]

You are welcome. Come here with results.

[pure furnace]

alright, thanks

[opaque nymph]

so it works?

[pure furnace]

idk haha

not had time to try

[opaque nymph]

Ok 😄

[pure furnace]

didn't work lol

import requests
import json

headers = {
    "token": "token"
}
payload = {
    "address": "address",
    "password": "pass"
}
making_account_thingy = {
    "address": "[e-mail]",
    "password": "helpmepls"
}
r = requests.post("https://api.mail.tm/token", json=payload)
print(r)
print(r.text)
r = requests.get("https://api.mail.tm/me")
print(r)
print(r.text)

[opaque nymph]

import requests
import json

payload = {
    "address": "address",
    "password": "pass"
}
making_account_thingy = {
    "address": "[e-mail]",
    "password": "helpmepls"
}
r_token = requests.post("https://api.mail.tm/token", json=payload)
headers = {
    "token": r_token.text
}
r = requests.get("https://api.mail.tm/me", headers=headers)

i think something like this should work

[pure furnace]

alright, thanks!

[opaque nymph]

Maybe you will need to edit it a little bit

You are welcome

[pure furnace]

didn't work, prolly me tho