For all those unconvinced it can work, please download and try the prototype project here! onelonecoder.itch.io/meaningless-cog

I have no idea what i'm watching, but thank you bearded man for the knowledge.

This man will always be the person I go to for difficult c++ programs

Stop and realize for one moment how great the content OLC has been posting. Really amazing.

I'm a web developer, but always love to see the other side of programming and especially channels that produce advanced materials, not always the "Hello, world" examples. Thank you for doing this.

For anyone else who's zip file did not match his, he made a small mistake at 3:04 and seemed to imply to download the boost_asio file, but in fact you want the non boost file.

Really great video! Some suggestions/notes: In net_message.h - use is_trivially_copiable instead of is_standard_layout to check if a datatype can be safely "memcopied" In net_tsqueue.h - make muxQueue mutable add the 'const' keyword to the methods where applicable. - fix push_front and push_back because you are moving a const T& which can't be moved (maybe add push_front(T&&) and push_back(&&) methods for this) - (just to increase the portability) use std::lock_guard instead of std::scoped_lock In net_connection.h - when deriving from std::enable_shared_from_this it is best practice to make the ctor private and add a factory method to create an shared_ptr of that class to be sure you can always call the method shared_from_this without having undefined behaviour or an exception, depending on the c++ version In general, I have noticed you always declare the destructor; be aware that when you declare the dtor, the move ctor and move assignment operator are deleted by default and you have to define them again so maybe defining them again could be a good idea.

Coder with 10 years of experience here but in other languages such as C# etc. Learning about C++ now and I gotta say your videos are on a very high technical level and you go through them step by step which I really appreciate. Great quality stuff, keep going. Also highly respect your professional skill level - it kinda makes me feel like a dumbass xD

I can't keep away from these videos. I've watched and listened to so many of them. I don't use C++.

I watched a lot of teaching videos in my life. Really a lot. But this one, it's the best of all. I like the language, intonation, and speaker's face, all of it brings live to the whole video. I'm impressed.

Thank you for the phenomenal video! + Thank you for not assuming that viewers already know what you know + Thank you for explaining things slowly, one small step at a time. That's the best method.

The first 20 minutes are beyond gold, bearded man.

I don't think I've ever clicked on a video faster

Everything on this channel is Gold. If I'm not interested in it right now, I'm certain I will be at some point. Great content... Delivered well... With just the right level of detail... at the perfect pace.

It took me a while to work it out so for those of you with an error that looks something like "undefined reference to `pthread_join`" (I'm on linux by the way). I fixed it by using - pthread in the compiling command: g++ Main.cpp -I [insert include directory] -o Main -pthread Hope this helps (:

I had a passion for software since I was a kid, but it was very small for what was sold at that time. It was difficult to find information in Turkish. After asking, I realized that even English was scarce on the internet at that time. Thank you for giving a lot of simple graphic emulators now.

this dude makes everything looks simple

I am really interested to see this !!! Much needed !!!

Golden content, yet it's free. Appreciate it people :-)

I love how you make your code ultra-wide and readable for most viewers. Teachers can use it in school. I can see it from 5m away, cozy in my bed!

javidx9 - thanks so much for your videos. I haven't done C/C++ since college 20 years ago. You've definitely re-sparked my interest in C. It was fun putting together a working example of the message buffer from your video. I got started writing games in my teens back in the early 90s but have done business software in my professional career. In college over a Christmas break I recall writing a centipede clone in java. Great stuff! Much appreciated!

Coming from a music production background, I was very confused by ASIO in the title...

I don't think it's an understatement to say that this video is something that I've wanted for years

A lot of mental effort was clearly put into making this video as informative as it could be. Thank you for your hard work.

love this youtube channel. I am a programmer but am not familiar with C++. You do such a great job explaining concepts for newer programmers! Keep it up!

A short while back I reverse engineered an MMO protocol, implementing a replacement server using ASIO. Ended up making heavy use of strands and IO services in order to handle most of the basic queuing. ASIO comes in pretty handy for writing performant servers! Prob my greatest frustration however was it's extremely difficult to find a good database library which works well with ASIOs async paradigm, so I ended up just using a threaded connection pool for the actual db queries. Will be interesting to see how you tackle that (if you are using a database in the backend). I also felt that it was lacking a bit when it came to actually handling packet data - you've often got to keep track of a lot of state to properly handle rate limiting, writing out packet data, handling bad packets, authentication, and so on. But then again in the long run, probably best to handle that yourself.

You always do something that not any ANY other KZfaq programming channel would do. I love that! without you there would probably not be anyone who spends effort into their videos as much as you do. Your the best!

I'm installing VS community after 5 years away from coding just to follow this tutorial, i think you have read this a million times but the way you structure the information is not so simplified that it became boring but not so advance that you basically need to be a master in the topic beforehand, after 10 minutes of your video i subscribed to your channel

this was great, can't wait for the rest of the series.

thanks a lot for sharing this content. Info like this is very ward to find, and the majorit times people discourage another developers to do this because it is "hard" or saying "you will never gona do this in you entirely life, do only platform games, cya"

The absence of comprehensive ASIO tutorials (I have seen only one good personal blog about using ASIO in C++) makes this tutorial a solid gold bar in the world of C++. Though I've used ASIO to build my own library in very similar fashion to yours - the learning threshold is very high even to professional programmers - I made many babysteps in a very long time to actually implement basic functionality. I had many thread running the context. I used JSON (nlohmann-json) as message payload to pass callable tied async function to ASIO context and get std::future as result. So it was basically a RPC library. Get message -> parse JSON -> find tied function in hash-table -> move function to asio context -> get future -> use future in needed thread. Looks simple but it took weeks of studying and I am very far from from C++ beginner. So you have my respect, sir. You did many people a great service for tearing apart and vivisecting this complex subject.

Nowadays as i grow older im getting more interested in how the worlds that hooked me as a child were developed, specifically MMOS. I hope to take the time to analyze this video deeply in the future. Thanks for the video sir!

For anyone following along with clion + mingw + cmak, be sure to add if(MINGW) target_link_libraries(learning_asio ws2_32) endif() to your CMakeLists.txt. Otherwise you'll get a bunch of "undefined reference to xxx..." errors when trying to compile around 9:00 mark.

"Oh no _not Boost_"... I laughed out loud.

I really appreciate the prep work that went into this video. Specifically I like that you first explore some of the dead ends to help drive home some of the subtleties of asyncronous behavior.

BEST place on the internet for learning C++!

Thanks for the video, lots of useful stuff. One minor thing @ 55:04, m_connection.release() is used here. The release has a return value to return a raw pointer from the unique pointer which is not really used here. Maybe the reset() is good enough for destroying the connection? And I think the video is missing few seconds about adding Send() interface into client_interface.

I always missed that "one" library for c++ networking.. THANK you! libcurl is nice but a pain to work with it's C syntax... ASIO is great! Thanks for showing me this! Also, thanks for taking the time for making all these videos. You truly are a gift for the c++ community.

I want to thank you for this awesome tutorial. It's the first time that I was able to use and understand asio. Such easy examples are so rare on youtube. Thank you again, sir.

I love that your video's doin't have distracting music because then I get to add my own distracting music while I continuously rewind your content run on sentence XD

Networking? WOOOOOOOOOOOO!

I don't understand how people could dislike this video 🙄

I have never clicked on part 2 of any video series as faster as I did for this one. Thank you so much.

Once again you managed to amaze me. At the beginnig I thought you were going to show and explain some standard socket programming, and have in the end the typical mini-chat server and client program. However I was completely wrong, and I am glad. I did not know of ASIO at all, and I simply loved your net implementation. Of course, your explanations pure gold. Very clear. Probably the best channel I am subscribed to. Congratulations once again.

i dont have enough IQ to understanding these courses so i watch these when i need to sleep

corporate: "so which versions of visual studio do you want to install on your computer ?" javidx9: "yes"

I don't even like C++, but I still watch these videos for the engineering thought going into the code. So much to learn from that alone.

Every. Single. Video you make... Is helpful and entertaining. Thanks!

Every time, the two different audio recordings throw me for a loop. Although it works, hearing the ambient room noise when you're facing the camera suddenly makes me feel like I'm in the room with you. ...

Me trying to learn C++: 🤓 Me trying to learn Server-Client in C#: 😎 Me when I get this video recommended: 🥵

As someone that loves MMOs, this is something I've always wanted to learn more about, thanks for the video!

Sir, they way you talk makes me very comfortable ❤ thank you.

Thanks a lot for making this video and that is incredibly helpful! However, I have some questions on the static_assert regarding the trivially copyable types (around 35:00 in the video). The first question is that since you mentioned "trivially copyable", I assumed that "is_trivially_copyable" trait should be used to enforce memcpy-safety, but why is "is_standard_layout" used instead in this case? The second question is that when you do the serialization/deserialization for data transmitted between different machines, how can we make sure the sizeof(header) or the bitwise representation of the custom data is the same on different platforms with the same code, given that the same structs may have different alignments and paddings? Although in the example you gave I guess a struct containing two uint32_t should generally be packed densely into a 64 bit chunk, I am worried that different compilers may treat other types of POD structs with different bit representation. Thanks!

anyone know how to fix the problem of std::scoped_lock not begin defined in the tsqueue

“Stepping through every line of code”, I wished my debuggers explained like you 👍

Reminiscent of an event driven pub sub. A very clean and simple approach to implementing, what is traditionally, a complex problem. As always and as expected, OLC describes everything in a very easy to understand and digest manner. Nicely done.

3:03 he mistakenly says "boost asio" and hovers over boost_asio_1_18_0.zip Just to clear up confusion it is just asio-1.18.0.zip

"We're not going to use sockets because...." First thing we do is create a socket

I would vote this serious one of the best video series in youtube. Top 3 definitely.

I did not know ASIO until your video, it looks having a clean API. Nice !

For MacOSX use $ brew install asio

hello

Oh no! This video came out 3 days ago, and I was hoping to hop right into Part 2 to see how the rest of the code comes together. I am actually starting to write a client / server infrastructure and this is a VERY good introduction into ASIO.

Imma click on this video and like it because a few months ago, I was trying to do networking in C++ and found ZERO good video references. Good work sir.

Why did you have to do this after I just spent the last six months learning socket programming.

the Australian Security Intelligence Organisation? sus

In my opinion really the best c++ and programming in general Tutorials out there, I know its a big statement, but I´ve watched a lot of tutorials and read a lot of them.

I was looking for a quick intro to asio and this was great. Thank you.

I have never been far enough along in one of my projects to need to dive into networking. Thus, I know that the day that I need to make this dive, I will have made real progress. It will be a cause for celebration, possibly with champagne.

What an excellent C++ demo, javidx9

Finally an explanation for this kafkaesque and nebulous library in English, unlike the confusing "tutorials" on the Boost::Asio site.

I have been waiting a long while for this video

Haven’t touched C/C++ in years to be honest - but the way you describe and explain makes me want to pick it up again for fun. Great videos!

Looking forward to this. Cheers, mate!

Let's fucking go!!!! I changed to and learned c++ in last 6 months for mmo networking

The timing couldn't be perfect! I am making a raycaster with LAN. You are so helpful!

This is the 3rd time that I am going to see this videos to completely understand them and I will say that THIS IS PURE GOLD. This will save weeks of study and therefore THANK YOU. That said, it will be I think be clarifying I think for everyone if you could dedicated some minutes to explain asio executors and completion handlers even tho I know that this can be out of the scope of this videos but just with the intention of clarifying some important concepts. Thank you so much for your contribution.

Thank you for providing this quality content for free!

Excellent indeed. One of the best modern C++ videos I have seen & you get ASIO thrown in as well. MANY thanks. You are a very cool guy 🙂

Now it’s time I actually try this. Dude is so fucking resourceful. Must’ve somehow avoided playing OSRS his whole life. What a codified gangster. Thanks!

@30:31 (Creating Message) your memberfunction size_t size() on the video calculate the size of the msg (msgheader + body), but on the github repo you use only the bodysize. If you create msg like @(30:31) the client program will only do one ping to the server (the roundtime is miscalculated) and you can press the "1"-key so often you want, you dont get any pingmsgs. Btw: great explanation of the architecture and of the new c++ sugar. -- thx --

I am so looking forward to the next parts. I enjoyed so much watching you opening new doors for so many possibilities for a game I have on my mind. Thank you sir! Much love. :)

I truly enjoy your content, keep up the work, I'll contribute as soon as this specific timeline that we are in right now comes to pass.

"They just happen to be the ones that I like, except for chrono" lol, ah... That got me, that was good.

This is explained in a really easy to digest manner and I'm really happy it showed up in my recommendations. If all your videos are of this quality then I have a lot to sit through in the nearest future! Great work!

Great vid !!! I've been using ASIO for many projects at work. I really love the way you introduced it.

I'm looking forward to part 2!

Such amazing coding skills and teaching technique. I really like your content. THanks

Really clear and detailed, keep it up!

Waiting for the following series! 31:24 Oh god, my eyes just exploded when you switched from the black to white screen

I must say this is really an enjoyable video, it's like an sci-fi movie 😁, it's always amazing to see someone with really great skill.

I've been waiting for this video FOREVER

Thank you so much, i'm working on a (boost asio) TCP-UDP hybrid protocol, I've been stuck for the past three hours and you helped me figure out my problem ! You got a sub

Hey, guy. I'm so glad that I can see your video from a single KZfaq Searching. It really impresses me when I have the first glance on the content of your video. I'm sure it's what I'm searching for. Don't be bothered by those negitive comments. Just let it go. BTW, I'm curious about do you have any serious about multi-threading of C++. I'm really eager to find such kind of materials. Since I want to switch my career from a SDET to C++ developer. They're so many things I need to learn and your course are just what I need. They're not just "hello world", they're valuable resources that can help me in my actual work and interview. Thank you so much again.

I never thought of doing this type of thing with C++(did it with Java in the past). - I am really excited about this series!

I found this very useful and I enjoyed your presentation. It was fun, and has lots of value. Pedagogical goodness! (also, your chrono dig was funny!)

one of the best presentation of Asio.

Well done Javid and thanks for making all these tutorials and great stuff

If you're using modern c++, why use std::vector instead of std::vector ?

You also can use SFML Network module, it have a very simple interface to TCP\UDP Sockets and also have a SocketSelector!