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Good example, but there is a major bug in the code: The "buf" slice is being reused, but the buf is not copied before it's sent to the channel (msgch). buf[n:] only creates a new slice pointing to the same address but with a different length. TCP already comes with backpressure so I'm not sure how much use there is for the extra channel. But if you want to use a channel, allocate a new slice (buf) each iteration.
Thank you for your comment! I'm new to golang and was wondering why the channel data is being overwritten if I allocate small buffer and send a message longer than the buffer size. All makes sense now.
Shouldn't it be fine in this case? conn.Read() is blocking and so is the channel send operation. Since a separate go routine is spun up for every client, there shouldn't be a way of overwriting each other's data. A copy is created when it gets sent to the channel, and there's no way for other client's or new messages of the same client to interfere with the value of the buf until it gets to that point (basically buf will stay the same value until the copy into the channel has been made, it can then read again from the connection). Correct me if I'm wrong though, still new to go...
i have a question at 07:15 as i understand, the for loop inside readLoop function will keep reading data from connection by using conn.Read can we put read message process to goroutine? what will be the different between using goroutine and not using goroutine at this situation? thanks,
@@anthonygg_ I will also love if you could make a vim setup tutorial and all vim plugins you are using. In my company I do ssh to a server and I don't have sudo access and internet is blocked to that server, I can SFTP files from local device to that server if you could help in setting up vim with these constraint then I will be thankful. Maybe I asked too much :)
You probably fixed this by now (or moved on to something else!) but this error might be from not calling "go s.acceptLoop()" in Start(). Anthony doesn't get this error but he fixes this a little bit later in the video
"I dont know how to close telnet" It literally hints you how each you make a connection. "Escape character is '^]'." that is "control-]" Then you will get a telnet> prompt ... type "quit"
Hi, I want to thank you by providing this tutorial, It helps me a lot. May I confirm something? Is the reason you put goroutine of readloop() inside acceptloop() is for handling multiple message in the same connection? So lets say you send a request to the server, but the server still can receive another request while processing the first request isn't it?
Quick off-topic question. Is it a good to idea to use TCP for my backend app so I can build native desktop GUI and use it? GUI connects to my go backend app via localhost tcp. Anyway, great video, will use it for my pet-project as an example. Thanks!
guys chill, expecting a youtuber to annotate his own video with timestamps is not unreasonable. Also timestamp is useful when rewatching. I don't want to scroll on the timeline blindly, guessing which part discusses XYZ. Timestamps make the video more accessible and user-friendly, saving viewers time.
► Join my Discord community for free education 👉 discord.com/invite/bDy8t4b3Rz
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Thanks for watching
I am so glad I found your channel.
Thanks for the video! This is just what I was looking for
Thank you for creating the video man! Really enjoy your teaching style, +1 sub
Thanks my man!
Holy Shit...Just few days before your Subs. Were 2k now it's 3k .. Congratulations Anthony for This Badass videos🍻
now its 40k
I got a lot of inspiration from looking at your code. thank you
Exactly what i was looking for
Good example, but there is a major bug in the code: The "buf" slice is being reused, but the buf is not copied before it's sent to the channel (msgch). buf[n:] only creates a new slice pointing to the same address but with a different length.
TCP already comes with backpressure so I'm not sure how much use there is for the extra channel. But if you want to use a channel, allocate a new slice (buf) each iteration.
Yes. That a bug. Good catch.
Thank you for your comment! I'm new to golang and was wondering why the channel data is being overwritten if I allocate small buffer and send a message longer than the buffer size. All makes sense now.
Another option is to bring the buf declaration into the for loop so one exists per loop iteration.
Shouldn't it be fine in this case? conn.Read() is blocking and so is the channel send operation. Since a separate go routine is spun up for every client, there shouldn't be a way of overwriting each other's data.
A copy is created when it gets sent to the channel, and there's no way for other client's or new messages of the same client to interfere with the value of the buf until it gets to that point (basically buf will stay the same value until the copy into the channel has been made, it can then read again from the connection).
Correct me if I'm wrong though, still new to go...
Great tutorial, thank you.
i have a question
at 07:15
as i understand, the for loop inside readLoop function will keep reading data from connection by using conn.Read
can we put read message process to goroutine?
what will be the different between using goroutine and not using goroutine at this situation?
thanks,
Thanks a lot! I like your style.
It would be interesting to watch about vim shortkeys that you use.
Will make one !
@@anthonygg_ I will also love if you could make a vim setup tutorial and all vim plugins you are using.
In my company I do ssh to a server and I don't have sudo access and internet is blocked to that server, I can SFTP files from local device to that server if you could help in setting up vim with these constraint then I will be thankful. Maybe I asked too much :)
hey man, i loved the video, thanks a lot !
Thank you for a nice tutorial
man verrrryyyy helpfulll thanks
7:44 I'm getting a deadlock error!
goroutine 1 [chan receive]:
main.(*Server).start(0xc0000c9f48)
D:/projects/tcp/main.go:32 +0xc5
main.main()
D:/projects/tcp/main.go:67 +0x5c
exit status 2
how did you solve this problem?
Same here
You probably fixed this by now (or moved on to something else!) but this error might be from not calling "go s.acceptLoop()" in Start().
Anthony doesn't get this error but he fixes this a little bit later in the video
thx so much for the video)))
awesome stuff !
Thanks my man!
Lekker hoor Tony!
Great video
Please make video about your programming environment setup.
"I dont know how to close telnet"
It literally hints you how each you make a connection.
"Escape character is '^]'."
that is "control-]"
Then you will get a telnet> prompt ... type "quit"
Hi, I want to thank you by providing this tutorial, It helps me a lot. May I confirm something? Is the reason you put goroutine of readloop() inside acceptloop() is for handling multiple message in the same connection?
So lets say you send a request to the server, but the server still can receive another request while processing the first request isn't it?
Correcr
love your content again, when will you bring some Rust stuff? Also when would you pick Rust over Go and vice versa?
Will do some Rust this week!
@@anthonygg_ cant wait!
Close telnet with ^] or CTRL+]
Hell yeah watched an ad for you haha
I hope it was a good one 🎉
I didn't know GSP had a youtube channel about programming xD
you are gowsome !!
Thanks a lot
how about creating alternative open source for openssh
Ctrl-L - clear terminal
Clear
Quick off-topic question. Is it a good to idea to use TCP for my backend app so I can build native desktop GUI and use it? GUI connects to my go backend app via localhost tcp. Anyway, great video, will use it for my pet-project as an example. Thanks!
I would use json api for that.
Unable to accept your discord community invite
I got my channel back Anthony! Let’s do one where you teach me go and I teach you functional js
What happened with that channel?
@@anthonygg_ it got hacked, then deleted. youtube is slowly bringing it back to life
i havent had access in a few weeks now.
@@agenticmark what about all your subs?
@@anthonygg_ gone for now, we will see what happens
@@agenticmark thats to bad. Keep going they will come back
tks!!
Where is git repo for this video.
github code repo?
You didn't show how to use the quitch
Please add timestamps
The content is already free, now you want it with stamps?
It’s a 19 min video dude.
Consider paying him some money 💰.
guys chill, expecting a youtuber to annotate his own video with timestamps is not unreasonable. Also timestamp is useful when rewatching. I don't want to scroll on the timeline blindly, guessing which part discusses XYZ. Timestamps make the video more accessible and user-friendly, saving viewers time.
tpc or tcp? 1:28
Cpt
7:24
@@anthonygg_ HAHAHAHHA
@@anthonygg_ pct
why do you keep moving your pointer when you are writing? it is very distracting haha. Apart from that good video!
Adhd
Aggravating variable names
Ho wld it feel to hve wrds typ lik this