Coding a Web Server in 25 Lines - Computerphile

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  • Опубликовано: 9 янв 2025

Комментарии • 688

  • @uuu12343
    @uuu12343 10 месяцев назад +625

    He is a gift that keeps on giving
    A fundamental explanation of making a simple webserver in 25 LOC for easy understanding of its components
    A lecturer that
    1. Uses Rust
    2. Uses a framework laptop
    3. USES NEOVIM
    very nice

  • @AndreDeLimburger
    @AndreDeLimburger 10 месяцев назад +924

    The joy of modern programming languages. Listening on a socket in just one line.

    • @sumantagogoi
      @sumantagogoi 10 месяцев назад +97

      yep.. that itself was the main trick... that one line.. tcp listen..

    • @aawwmm
      @aawwmm 10 месяцев назад +66

      java had that in 1995... ServerSocket for those asking
      After looking into c it has Socket.h so even in c its there...

    • @dexio85
      @dexio85 10 месяцев назад +59

      It's not a programming language, it's the set of libraries it comes with. I think you are confusing two things here.

    • @AndreDeLimburger
      @AndreDeLimburger 10 месяцев назад +22

      The standard libraries that come with the language, are they considered part of the language?

    • @rogo7330
      @rogo7330 10 месяцев назад +27

      It's two syscalls to Linux kernel too. Not so heavy to implement that in any language that allows to do syscalls.

  • @samwalker4438
    @samwalker4438 10 месяцев назад +578

    I loved Laurie’s smile each time he wrote something he knew was absolutely dodgy!

    • @AdamSpurgin
      @AdamSpurgin 10 месяцев назад +14

      I write webservices for a living and I have that same energy when realizing I can cheat the system and completely ignore convention.

    • @Ybby999
      @Ybby999 22 дня назад

      @@samwalker4438 the smile is nice but it totally wrecks the value of the video. You're a bad teacher if you can't teach something clearly without going "oh disregard this part" every five seconds.

    • @MrJ4ckie
      @MrJ4ckie 5 дней назад +1

      @@Ybby999 Actually in this context it helps to reduce the information down to the relevant bits. How else would you expect him to write and explain a server in less than 15 minutes?

  • @vercolit
    @vercolit 10 месяцев назад +142

    I had this professor for a few lectures in my undergrad during covid. He was very enthusiastic, funny and explained things really well. He was also was explaining concepts with his neovim + rust setup. Happy to see him again on computerphile!

  • @OldShatterham
    @OldShatterham 10 месяцев назад +312

    Honestly I didn't expect the fundamentals of HTTP to be so easy. This sort of "from-the-ground-up" approach was really fun to watch!

    • @GottZ
      @GottZ 10 месяцев назад +19

      email is of similar complexity.

    • @Faladrin
      @Faladrin 10 месяцев назад +20

      Sure, when you have libraries in place that do all the actual on the ground stuff we don't see in the video.

    • @collinswisher6566
      @collinswisher6566 10 месяцев назад +16

      @@Faladrinreally the only library he used was the tcplistener implementing the protocol was all up to him.

    • @beentheredonethatunfortunately
      @beentheredonethatunfortunately 9 месяцев назад +1

      There's a degree of knowing I.T. being seen as knowing how to use Word and Excel. Been this way for a couple of decades at least. Very few people seem to know the basics.

    • @FinalManaTrigger
      @FinalManaTrigger 7 месяцев назад +1

      What you don't see is just how involved the library calls are, there's tons more lines of code behind the listner, for example.

  • @nullptr.
    @nullptr. 10 месяцев назад +42

    You can tell this guy loves what he does. Thanks for the video!

    • @Microphunktv-jb3kj
      @Microphunktv-jb3kj 10 месяцев назад

      highly paid serf is a happy and productive serf... : )

  • @wildwestrom
    @wildwestrom 10 месяцев назад +235

    Programming Rust on a Framework laptop running OpenBSD. Absolutely based.

    • @gg-gn3re
      @gg-gn3re 10 месяцев назад +34

      neovim and looks like alacritty as well

    • @udasai
      @udasai 10 месяцев назад +12

      I fully expected Python, the Visual Basic of the modern age. It's the only reason I clicked the link, to see if I was right, since for any modern environment you can write a "web server" with three statements: import web library, set default response string, invoke the listener.

    • @jumbledfox2098
      @jumbledfox2098 9 месяцев назад +2

      incredibly based.

    • @hachikuku_
      @hachikuku_ 9 месяцев назад +9

      you all sound like reddit and hn nerds absolutely cooming over a dude's setup.

    • @gg-gn3re
      @gg-gn3re 9 месяцев назад +5

      @@hachikuku_That's the point, poindexter.

  • @TheHenrik225
    @TheHenrik225 10 месяцев назад +27

    Great format for explaining web servers. Those 17 minutes flew by

  • @Sonex1542
    @Sonex1542 10 месяцев назад +3

    This was awesome. I was a programmer, now a DBA. Having someone explain code like this is what a learning experience should be.

  • @pmmeurcatpics
    @pmmeurcatpics 10 месяцев назад +50

    Don't know if it's a coincidence, but the code really reminded of the one in the first chapters of the Rust Book - Building a Multithreaded Web Server. I've just been reading it a couple of weeks ago, and can definitely recommend taking a look if you're interested! Though it's worth mentioning that the code does contain some difficult Rust

    • @vincei4252
      @vincei4252 10 месяцев назад +1

      Difficult Rust can't be as bad as "modern" C++ with templates and meta-programming? Can it?

    • @pmmeurcatpics
      @pmmeurcatpics 10 месяцев назад +5

      @@vincei4252 unfortunately I can't make this comparison since I barely know C++, let alone "modern" C++. Rust does meta-programming using things called macros - from what I've heard, they're quite powerful and reasonably easy to understand? Though they're definitely WIP, so there're a couple of rough edges here and there. There was a talk recently, called something like "Anything you can do, I can do it worse with macro_rules!", where the host showed a somewhat extreme example - a macro they created that can automatically create a fully functional XML representation of a token tree of Rust code

    • @framegrace1
      @framegrace1 10 месяцев назад +1

      This code will be very similar on any language, really. Even the ones with no sugar added.

    • @TAP7a
      @TAP7a 10 месяцев назад +2

      @@vincei4252they’re as bad as each other syntactically, Rust is probably a little more coherent, but the precision demanded by the Rust compiler is simultaneously much more reassuring and frustrating. Whereas modern C++ is less coherent, but quicker to get running, but only if you accept all the footguns that come with it.

  • @vincei4252
    @vincei4252 10 месяцев назад +1484

    You can build the web server in one line of code if you put your 25 lines of code in a library. 😂

    • @ai-spacedestructor
      @ai-spacedestructor 10 месяцев назад +103

      or write all of the code in one line, even if we dont strip down the server to the bare minimum, a full server is still just 1 line of code if you format it in such a way that its all on the same line.

    • @vincei4252
      @vincei4252 10 месяцев назад +70

      @@ai-spacedestructor isn't every application just one line of code/one function? main() {... } It's turtles all the way down.

    • @mail2ajm
      @mail2ajm 10 месяцев назад +39

      Low level programmer:

    • @ai-spacedestructor
      @ai-spacedestructor 10 месяцев назад +5

      @@vincei4252 depends on the programming language, im not too familiar with rust to know how that is exactly.

    • @zfold4702
      @zfold4702 10 месяцев назад +8

      Nodejs😂

  • @YandiBanyu
    @YandiBanyu 10 месяцев назад +13

    I always recommend everyone trying to one up their programming skill is to create web server using the HTTP spec. It really teaches a lot about what programming is. There is a document that you have to follow and the expected behaviour, how you handle edge cases, how you optimize some algorithm, etc. Why HTTP and not anything else is jusy because the sheer number of implementation available that you can use as a reference.

    • @laptoprelaks
      @laptoprelaks 10 месяцев назад

      interesting will try soon😂

  • @dylanmeeks54
    @dylanmeeks54 10 месяцев назад +650

    Rust user? Framework laptop owner? Based prof.

    • @KarunaMurti
      @KarunaMurti 10 месяцев назад +57

      Bet prof use Arch too btw.

    • @Lb8068
      @Lb8068 10 месяцев назад +30

      Based on what?

    • @beatboy6690
      @beatboy6690 10 месяцев назад +92

      Rust user, framework laptop and vim user. Mega based

    • @UnevenMike
      @UnevenMike 10 месяцев назад +25

      And neovim and firefox

    • @AntonAdelson
      @AntonAdelson 10 месяцев назад +5

      What's framework laptop?

  • @linuxguy1199
    @linuxguy1199 10 месяцев назад +28

    Nice! One of my first projects was writing my own webserver in Java, later added PHP support and used it to host my website.

    • @andiuptown1711
      @andiuptown1711 9 месяцев назад

      How did making a Java web server go? Any tips?

  • @NetherFX
    @NetherFX 10 месяцев назад +71

    The funny thing is, there's an async tutorial in the Rust Book that explains how to use threads with a web server do handle 4 workers. If I remember correctly it's not even 10 lines more. Would've been a cool addition!

    • @Gnarkson
      @Gnarkson 10 месяцев назад

      which rust book?

    • @NetherFX
      @NetherFX 10 месяцев назад +3

      @@Gnarksonshould be chapter 20 in "the book" (referring to the official book)

    • @Gnarkson
      @Gnarkson 10 месяцев назад

      @@NetherFX thanks

  • @halfsourlizard9319
    @halfsourlizard9319 10 месяцев назад +222

    'I am abusing this monstrously.' == always the sign of well-written code.

    • @TAP7a
      @TAP7a 10 месяцев назад +31

      “What I’m doing is a crime against silicon” = writing some of the most ingenious code possible to write

    • @phill6859
      @phill6859 10 месяцев назад

      No, not even close

    • @phill6859
      @phill6859 10 месяцев назад +2

      ​@@TAP7aif you think it's ingenuous then it's more about what you think than the code itself.

    • @kevinmcdonough9097
      @kevinmcdonough9097 10 месяцев назад +1

      Genius or, more likely, brittle code only workable by the original author. Could be either. Could be both.

    • @halfsourlizard9319
      @halfsourlizard9319 10 месяцев назад +1

      @@kevinmcdonough9097 Oh, very probably both 😜

  • @lanatrzczka
    @lanatrzczka 10 месяцев назад +4

    Even before the rest was completed, just the bit that sent back "Hello Computerphile" was totally amazing to me.

  • @1111-z8h
    @1111-z8h 10 месяцев назад

    Although my English is not good, I spent an afternoon watching and learning from this video. This video is really simple and easy to understand for beginners like me.

  • @TallMoose
    @TallMoose 10 месяцев назад +8

    Great video! Just a few weeks ago my collegues and I were chatting about a web project I was working on, and the question of "How exactly does a web server even work?" came up. At the time we didn't look too deep into it, since we are all high level programmers who don't remember our college days. This really pointed out how simple you can really do it!

  • @ayanSaha13291
    @ayanSaha13291 10 месяцев назад +1

    Learnt something nice today! Thanks for uploading, Lastly the authors enthusiasm regarding his craft was quite infectious.

  • @comosaycomosah
    @comosaycomosah 10 месяцев назад +21

    this channel is fire tbh

  • @Lurco8
    @Lurco8 10 месяцев назад +4

    Fantastic content, that's what I was always missing in the "basic" server setup - the way the server actually functions!

  • @teej_dv
    @teej_dv 10 месяцев назад +168

    TELESCOPE USED!! LETS GOOOOOOO!!!!!

    • @mjhika
      @mjhika 10 месяцев назад +4

      TELESCOPE!!!

    • @Pbertrand_dev
      @Pbertrand_dev 10 месяцев назад +11

      wait arent you teej the creator of telescope but you also stream on twitch?

    • @n0kodoko143
      @n0kodoko143 10 месяцев назад +2

      Telescope, Lets GOOOOOO

    • @RenXZen
      @RenXZen 10 месяцев назад +5

      timestamp 1:51 woooooooooooo

    • @DamnitDutch
      @DamnitDutch 10 месяцев назад +5

      🔭 NeoVim without Telescope LITERALLY unusable 🔭

  • @smccrode
    @smccrode 10 месяцев назад +5

    Great video! If you want to remove the duplicate INSERT mode you can add: set noshowmode into your config.

  • @Norman_Fleming
    @Norman_Fleming 10 месяцев назад +36

    it is important to remember that whichever end you are writing, you need to consider the other end a bad actor or buggy AF.

    • @Ebiko
      @Ebiko 10 месяцев назад +2

      That's what he's saying.
      He's ignoring any safety concerns for this example like error handling or exploit fixing

  • @joaopedrorocha4790
    @joaopedrorocha4790 10 месяцев назад +1

    I love this guy's computherphile videos! He's always very clear and bring practical stuff.

  • @MegaAresik
    @MegaAresik 10 месяцев назад +1

    Didn't expect the video to include the Rust programming language. As always valuable materials presented for pure knowledge:)

  • @pedroth3
    @pedroth3 10 месяцев назад +4

    Like all computerphile video of Dr Laurence Tratt. Great work!

  • @cthoadmin7458
    @cthoadmin7458 8 месяцев назад

    Tried it and damn! It worked! Utterly brilliant. What a fantastic way to learn! Yesterday it was Rust hello world for me, now I have a basic web server running.

  • @slluxxx
    @slluxxx 10 месяцев назад +3

    awesome. even though i am a fullstack dev, this seemed always daunting and i never wanted to look into it but its actually super super easy. really well made!

  • @gerokatseros
    @gerokatseros 10 месяцев назад

    Best channel in you tube ... i am surprised by how well and simply everything is explained. I don't use rust but i already figured out how to do it in Python!

  • @yugshende3
    @yugshende3 10 месяцев назад +1

    I like this transition. We went from Perl one liners or insane algorithimic one liners to now people applying creativity to web servers and api designs. I was just thinking about how computer science is getting boring nowadays but I’m glad that there’s still a few breaths left until it totally becomes the next accounting-esque profession.

    • @sofianikiforova7790
      @sofianikiforova7790 10 месяцев назад

      I’m not sure it will ever be an accounting-esque profession. The amount of creativity involved and flexibility of tooling, and solutions are always going to be more open ended than accounting.

    • @yugshende3
      @yugshende3 10 месяцев назад

      @@sofianikiforova7790 I agree but I think the creativity part of it is tied behind the language. once people can code in their native languages I think more or less the syntactical accuracy will become a matter of just putting the right structure in place. So, more or less like accounting. Similarly how people still do creative stuff with accounting (eg new ways of building ledgers like crypto) but the basic premise has converged onto a more or less singular agreed-upon convention. Computer Science was fighting that premise at its very core I think with several languages and several programming paradigms. But with the advent of AI the programming paradigms or "code structure" might become meaningless. A computer for example doesn't care if the JS file is minified or beautified. We do.

  • @dougclendening5896
    @dougclendening5896 10 месяцев назад +1

    Realizing that someone needed to program the libraries you were using feels like a lost art.
    We stand on the shoulder of giants.

  • @daze8410
    @daze8410 10 месяцев назад +37

    @ThePrimeTime needs to see this

    • @taylorswe
      @taylorswe 10 месяцев назад +14

      the "I'm abusing this monstrously - agen"

    • @romevang
      @romevang 10 месяцев назад +6

      I think he watched it on today’s stream, we’ll see if it gets posted.

  • @sneaksneak6522
    @sneaksneak6522 10 месяцев назад +1

    Awesome video, great job at explaining the questions asked. Absolute chad energy Laurence
    Please do more videos like this!

  • @PatrickPoet
    @PatrickPoet 9 месяцев назад +1

    "you could call it a good listener," you startled a laugh out loud out of me:) Thanks.

  • @sundhaug92
    @sundhaug92 10 месяцев назад +4

    One difficulty with supporting multiple sites in a webserver is that you have to support it using both raw HTTP ... and TLS SNI (ServerName Indication) and ideally TLS ESNI (Encrypted SNI)

  • @dehrk9024
    @dehrk9024 9 месяцев назад

    I love listening to these smart people it's so motivation and takes you into the presence, sharpening your mind..

  • @shad0wman
    @shad0wman 10 месяцев назад +1

    ive always loved how "gobblygoop" is an official industry term

  • @nelioasousa
    @nelioasousa 9 месяцев назад +1

    Absolutely amazing! Thank you very much, Mr. Tratt.

  • @Simon-ir6mq
    @Simon-ir6mq 10 месяцев назад

    This was really nice! I'm so used to getting everything low-level served to you as a library call when you actually need so little of the library you could just do the thing yourself.

  • @DoRullings
    @DoRullings 10 месяцев назад +15

    They could do a http path traversal, e.g.: [address to server]/../../../../etc/passwd

    • @Turalcar
      @Turalcar 10 месяцев назад

      I think you could just start with // to get to the root

    • @sofianikiforova7790
      @sofianikiforova7790 10 месяцев назад

      He acknowledged this insecurity.

    • @DoRullings
      @DoRullings 10 месяцев назад

      @@sofianikiforova7790 Yes he does. I only showed one way to access directories you don't want other people to access. It wasn't meant as a "gotcha" moment. 😉

    • @DoRullings
      @DoRullings 10 месяцев назад

      ​@@Turalcar I'm not sure if it would have worked on that server, tbh. In any case, I would have written the comment in the same way as it makes it easier to read/recognize, and RUclips comments are not suitable for this as anything resembling a URL is easily caught by the scam filter.

  • @tmnt9001
    @tmnt9001 10 месяцев назад +1

    First of all, fantastic video. It's amazing how you managed to simplify such a complex topic.
    Second of all - as a software engineer - your corner cutting made my skin crawl. 😅

  • @codewizard58
    @codewizard58 10 месяцев назад +3

    You can make a secure web site with about 60 lines of C that is extensible. Did this 28 years ago and was used as part of one the the first internet proxy firewalls.

  • @Meow_YT
    @Meow_YT 10 месяцев назад +55

    "In 25 lines" is doing a lot of heavy lifting with those libraries wrapping so much networking code.

    • @CramBL
      @CramBL 10 месяцев назад +12

      "Those libraries" he's using one library and it's the relatively tiny Rust standard library. Try writing to stdout in less than 25 lines without calling 50 lines of C or another binary that does just that.

    • @zerker2000
      @zerker2000 10 месяцев назад +12

      ​@@CramBLNot wrong in spirit, but "call the SYS_WRITE syscall" is like 5 lines of assembly, or a hardware serial port equivalent in low-level systems

    • @Meow_YT
      @Meow_YT 10 месяцев назад

      ​@@CramBLOh stop. It's just a bait title. So much is going on behind the scenes. People slowly forgetting how much work has been done by others in the past, and it boils down to "in 25 lines". It's a bit tiring. And it's all going to be forgotten if anything major happens and people don't know how to fix the problems. Cos all we'll have are the imports and no one knows the magic inside. Just 1 billion lazy devs that know the 25 lines.

    • @gg-gn3re
      @gg-gn3re 10 месяцев назад

      @@CramBL yea and try doing it without a kernel, that's even more lines!

    • @habl844
      @habl844 10 месяцев назад +4

      Libraries like... the kernel??? That's where the whole IP stack and sockets are implemented. Even in assembly this code wouldn't be massively longer.

  • @Vl_OLET
    @Vl_OLET 10 месяцев назад

    no way y’all happened to upload the exact type of thing i’ve been looking for lately

  • @Lion_McLionhead
    @Lion_McLionhead 10 месяцев назад +4

    Remember the good old days when writing a 1 line web server in perl was the rage.

  • @bersl2
    @bersl2 10 месяцев назад +12

    0:34 I am currently waist-deep in the Apache internals at work, so I can attest to this.

  • @rkin2009
    @rkin2009 10 месяцев назад +1

    I don't know why, but I just thought about how to make a web server and this video came up. What a coincidence!

  • @MyCodingDiary
    @MyCodingDiary 10 месяцев назад +1

    Wow, this is exactly what I needed. You're a lifesaver!

  • @ollienx
    @ollienx 10 месяцев назад +1

    What's the line merging referred at 7:30? I don't think I've ever heard of that

  • @AliciaSykes
    @AliciaSykes 10 месяцев назад +14

    Me expecting him to run `npx http-server index.html` and be done with it 😆
    Great video, thanks Laurence!

    • @philrod1
      @philrod1 10 месяцев назад +4

      25 lines of code plus 4.6 gigs of node packages for some reason 😂

  • @FabianVilersBe
    @FabianVilersBe 10 месяцев назад +1

    10:50 you could use the split_whitespace() function 😊

  • @ddude27
    @ddude27 10 месяцев назад

    Crazy to think we've abstracted all the low level aspects for creating a web server. Just going through all the standards/protocols invented to get this web server going that looks simplistic would take a lot of computer science courses to get a deep understanding of it all.

  • @MyCodingDiary
    @MyCodingDiary 10 месяцев назад +1

    I wish I could give this video more than one like. It's that good!

  • @DevduttShenoi
    @DevduttShenoi 10 месяцев назад +18

    This guy's the kinda professor I wanted all my academic life!
    nvim, rust in linux on a framework laptop!
    Be my guide sensei 😭❤

    • @wbfaulk
      @wbfaulk 10 месяцев назад +4

      Pretty sure he was running FreeBSD, based on the browser's "user-agent", not Linux.

    • @gspapp
      @gspapp 10 месяцев назад

      OpenBSD @@wbfaulk

    • @smikkelbeer6352
      @smikkelbeer6352 10 месяцев назад +2

      ​@@wbfaulk OpenBSD, even

    • @wbfaulk
      @wbfaulk 10 месяцев назад

      @@smikkelbeer6352 dammit

  • @BillySugger1965
    @BillySugger1965 9 месяцев назад +2

    What I want to know it, how to connect a TCP socket to a serial COM port and then write a crude web server on an Arduino to simplify remote connections to embedded projects.

  • @comradepeter87
    @comradepeter87 10 месяцев назад +11

    Glad to see Rust having reached a point where it's no longer "Building a web server in Rust" but just building a web server, oh and btw we chose this whatever language because it's mainstream enough and understandable enough to not take away from the main point of the lesson.

    • @em_the_bee
      @em_the_bee 7 месяцев назад +2

      I'm sorry, you forgot to add .unwrap() and a semicolon, so your comment does not compile

  • @slendi9623
    @slendi9623 10 месяцев назад +3

    11:58 this path traversal makes me cry

  • @patrickle2500
    @patrickle2500 10 месяцев назад

    You have taught more about general services (it doesn’t have to be for web) than college ever did for me

  • @AndrewTSq
    @AndrewTSq 10 месяцев назад +1

    Loved this episode!. Thanks.

  • @MJ-xh8co
    @MJ-xh8co 10 месяцев назад

    I did the same project for a distributed systems course. What a great small project.

  • @tombeers5445
    @tombeers5445 7 месяцев назад

    He said at 7:30 that you have to merge lines instead of reading them one line at a time. What was meant by this?

  • @metcaelfe
    @metcaelfe 9 месяцев назад

    Oauth clients are an incredibly useful implementation of these

  • @marcruijs1039
    @marcruijs1039 10 месяцев назад

    Love seeing the framework laptop!

  • @Eunakria
    @Eunakria 10 месяцев назад +1

    it's probably worth noting that even after fixing the path traversal attack, there are a number of other vulnerabilities in this implementation that make it very unlikely for me to recommend it for even small-scale deployments. just off the top of my head: rate limiting of any kind is nonexistent, resource exhaustion is trivially possible by sending an arbitrarily large request, any client can take down the server by requesting a nonexistent file, etc.. there are also a number of more subtle path traversals; even if you check for paths that contain `..` segments, you still have to account for paths that start with two slashes, etc..

  • @jslay88
    @jslay88 10 месяцев назад +1

    While its nice to see this broken down for people, I also want to stress how dangerous this is without proper security and exploit handling. It is almost always better to implement some well known http server library if you need this functionality.
    It's not just handling files to have basic security here. There are all sorts of RCE via injection you have to be concerned with, etc, depending on which language you implement this in.
    However, this is a great exercise for learning this!

  • @likebot.
    @likebot. 10 месяцев назад

    I remember a time when this webserver would have sufficed, when we could "leave our doors unlocked" metaphorically speaking, when the most malicious of actors were simply trying to bypass front door security for the sake of learning. But that time predates the webserver, the web, and even _The Cuckoo's Egg._

  • @SrFrancia0
    @SrFrancia0 10 месяцев назад +4

    You didn't have to flex your vim skillz that hard lmao what a legend. Also noticed the framework laptop

  • @rursus8354
    @rursus8354 10 месяцев назад +1

    I knew almost all, and I detest Rust, but I just learned the proper layout of the server response!

  • @GwixbkVxoehf
    @GwixbkVxoehf Час назад

    看了这个视频,我感觉每一分每一秒都不浪费,太精彩了

  • @SoreBrain
    @SoreBrain 10 месяцев назад +1

    Great video, loved it!

  • @deadlock107
    @deadlock107 10 месяцев назад

    Recreated it in python and learned a lot. Thank You!

  • @ifcoltransg2
    @ifcoltransg2 10 месяцев назад +1

    Could use cap-std instead of std for the file access to eliminate all the path traversal vulnerabilities, although that's obviously not the point of the video.

  • @HarryHelsing
    @HarryHelsing 10 месяцев назад +23

    Rust and Neovim, I like your style.

    • @PbPomper
      @PbPomper 10 месяцев назад +3

      Can't get used to Rust syntax.

  • @chiroyce
    @chiroyce 10 месяцев назад +1

    6:34 - isnt there a blank line between all the headers and the body (for non GET requests)?

    • @trevinbeattie4888
      @trevinbeattie4888 10 месяцев назад

      This trivial example doesn’t support any method but GET.

    • @chiroyce
      @chiroyce 10 месяцев назад

      @@trevinbeattie4888 Gotcha

  • @OBGynKenobi
    @OBGynKenobi 5 месяцев назад +1

    25 lines = Decades of research and building optimized libraries.
    I'd like to see someone build a web server with assembly from scratch.

  • @tramsgar
    @tramsgar 10 месяцев назад +1

    Alright, ship it! We'll send out a patch later if we can be bothered.
    Now write a web broswer in 51 lines. Release is on friday afternoon, chop chop.

  • @petersuvara
    @petersuvara 10 месяцев назад +3

    Great to see someone coding in rust! Thank you. 🙏🏻

  • @dotdotlar
    @dotdotlar 10 месяцев назад +1

    What (Neo)Vim plugins did you use? That’s a great looking setup.

  • @awaismushtaq5719
    @awaismushtaq5719 10 месяцев назад +1

    I still love C over this Rust thingy!

  • @emjizone
    @emjizone 10 месяцев назад

    Laurence Tratt and @Computerphile, I hope you'll soon make a video explain how an why this naive server is so damn *vulnerable* to many sorts of attacks, particularly BF, DoS and LL attacks.

  • @slmjkdbtl
    @slmjkdbtl 10 месяцев назад +3

    It'll also be very informative to show people how to build a http server in C in 100 lines, with socket(), recv() etc. Rust already wraps things in pretty std packages, and it has syntax noise which can confuse people who aren't familiar with it (compared to the simplicity of C)

  • @groverphonic
    @groverphonic 10 месяцев назад

    Good to see another openBSD enjoyer :)

  • @NonameEthereal
    @NonameEthereal 10 месяцев назад +2

    Using a slightly different one eh? I checked, and I spot some OpenBSD httpd! High Five Laurence Tratt!
    (And OpenBSD does run very nice on the Framework laptop. :D )

  • @wcheswick
    @wcheswick 10 месяцев назад

    Lovely sample. I used to do all this with a shell script. Same approach, and potentially quite safe.

  • @Spymask-AoC
    @Spymask-AoC 9 месяцев назад

    I have seen many 'a' production websites that will happyly give you index if the url ends with a / so Laurence is onto something here lol

  • @pradyumnabilagi7661
    @pradyumnabilagi7661 9 месяцев назад +1

    ok I thought it was impossible to do this with such a simple view. I going to try and create this in c++ using websockets which I have used before but have failed.

  • @LPArabia
    @LPArabia 10 месяцев назад

    I guess this useful if I wanted to build a server for an embedded system or one of those wireless sensor networks? It should take almost no space and minimum processing, given that we have single user.

  • @shadowmil
    @shadowmil 10 месяцев назад +1

    If this webserver is a shovel. Things like nginx and apache are excavators. Sure, they both can dig holes. But really aren't comparable beyond that.

  • @engineeringdisillusion
    @engineeringdisillusion 9 месяцев назад

    - How many holes and edge cases do you want?
    - YES

  • @dbreise
    @dbreise 10 месяцев назад +1

    Thank you for this. I work for a hosting provider and deal with Web Services of all kinds so It's really cool get an idea of how it all works under the hood. But for real though, you need to iron that shirt! 😅🤣😂

  • @user-td5gy2fh3p
    @user-td5gy2fh3p 10 месяцев назад +2

    can someone tell me the name of the neovim theme he is using? thanks.

  • @dehrk9024
    @dehrk9024 9 месяцев назад

    Bob Ross of building a web server in 25 lines

  • @varantavers
    @varantavers 10 месяцев назад +12

    Rust mentioned, uses Framework. Instant like.

  • @max-mr5xf
    @max-mr5xf 9 месяцев назад

    I’d like to see this approach in Erlang or Elixir. On the other hand, OTP already has a HTTP/1.1 server included.

  • @RetroRogersLab
    @RetroRogersLab 10 месяцев назад

    Would you say there is a use case for this in Internet of Things projects? I've heard of MQTT and other messaging technologies but for a private home network behind a firewall this is pretty low point of entry. I guess I should look into Rust and add that to my Resume too.

  • @addas4
    @addas4 10 месяцев назад +2

    Thank you! You gave me courage!

  • @AntonAdelson
    @AntonAdelson 10 месяцев назад +2

    I have a question! How come the binary files are still served properly? I mean pics. Is the browser smart enough to figure out the media type without telling it??

    • @trevinbeattie4888
      @trevinbeattie4888 10 месяцев назад +1

      The response has to include a “Content-Type:” header which identifies the MIME type of the data. In many cases there may also need to be a “Content-Encoding:” which indicates whether the data is ASCII text vs UTF-8, raw vs. gzip compressed, etc.

    • @spookycode
      @spookycode 10 месяцев назад +5

      A normal web server would send the proper response headers detailing the information. Ours however doesn’t, the browser simply receives the data and looks into the first byte of the file, if it’s a well known magic bit it’s recognized. If not, it checks if the contents is valid ascii/utf8 if yes, it will be rendered as html. If not it’s simply a byte stream and is downloaded.

    • @odomobo
      @odomobo 10 месяцев назад +2

      ​@@trevinbeattie4888 Yeah exactly, this server doesn't do that. I think the browser must be making educated guesses as to the content type of each file

    • @bobthecomputerguy
      @bobthecomputerguy 10 месяцев назад +1

      The browser is the one requesting the file and knows what type of file it's requesting. If it's expecting a text file, it will render it as text. Same for images. It's not up to the server to make that determination. The contents of the file should be defined by the html page requesting it (whether it's an image file, another text based web page, etc). You can write a web page referencing nothing but files on your local computer, and it will render just fine without any webserver between the browser and your file system. Fundamentally, a web server if just a file server giving out the binary data of the files that were asked of it.

  • @lolcat23
    @lolcat23 10 месяцев назад

    I absolutely see how something static like an iot device would want something as simple as this, lock down the folders on the operating system, don’t have anything that can be abused(I’m assuming that’s trivial, I know nothing), and just a tiny really quick server would be ideal, right?