Multiple Chat Clients: One Thread (in C++)

#networking #sockets #multipleclients #nothread

This is an introduction to network programming by building a server in C++ that echos the client's messages back. It allows multiple clients to connect using the fd_set structure, the select() function and three macros: FD_CLR, FD_SET and FD_ZERO

[medjassertoubib]

watching your videos I feel like I've taken a full year of school in just 10 minutes .#stupied_school_system

[EDemircivi]

Excellent tutorial! Thanks for your time :)

[tmy]

Well you managed to do a great job explaining select and how to handle multiple sockets on a server. I learned way more in 20 minutes from this video than from a few hours online. Thanks a ton

[beauvisagecolin]

Very nice explication, im glad to find a video like that ! (u saved my project for my technical degree)

[DaniiTheFox]

you really explain perfectly what the book didnt explained well you did it!

[anlakkaya]

Thanks man, you are awesome at teaching :)

[mucomplex]

no reason for me to not like this video. thumb up!

[caseyli]

Very helpful! Ty. Also - are you Bahamian? And/or Canadian? Noticed the bill on the board and "CRA, Eh"

[AvivCMusic]

Hello sir, I'm a relatively experienced programmer, and your networking series is great for me to get into C++ network programming. Thank you very much!

[slimbdeful]

Thank you for your tutorial. Really useful and well described. By the way. You made a little mistake when you added a new bonus function \quit in your shared code. When you type \quit in putty, it returns "\quit\r\n" instead of "\quit". That's why you would never killed your server :) I have been investigating your code with debugger about hour and a half )) Sorry for my english. Thank you again. Nice job!

[KFRogers]

This was super informative but I feel like I missed something. What does using select and associated macros etc buy me in this case that I can't do with a std::vector? Just seems like a list of fd's? Having not modified my code to try this yet ;), I feel like I'd just keep the listening socket out of the whole array as well...but maybe there is something with the flow where I need it?! We will see...thanks though! love learning this stuff

[thienthanhquach]

How to code it with linux & C++ ? Please teach me. Thank you.

[jamesmorrison]

Sloan your tutorials are excellent. Please do a multi client asynchronous server.

[tiandizhong]

Great tutorial, man! I'm currently implementing a easy database like redis, and the communication between multiple clients and single server in windows is tough for me. This video really help me a lot. : )🥳

[alexwilson]

Thank you for posting this. I'm currently working on an assignment similar to this and you have helped me so much and explained everything so well!

[xetop]

Thanks for doing this video ! Awesome stuff. Appreciate it.

[hemanta]

Absolutely great tutorial, also very helpful that you subtly encouraged me to the debugging process. I recommend anyone to just hit a breakpoint and see what the 'select' function actually does each time you (disconnect, reconnect or send messages) from one of the clients.
For me, the confusion cleared up when I saw 'select' blocking the while loop for any activity and modifying the 'copy' fd set and the socketCount, to only include active sockets.
Thank you so much for this.

[QouteOfTheDay]

That was just wonderful. Thank you very much.

[raynopowell]

Awesomeness! Always wondered what the FD stands for :-)
Will have to play with the select() function in order to see how it can handle client specific data! Thank you for the help!

[higheredjohn]

You have no clue how happy this video made me. Thank you for taking the time to show this - really helped me understand things.