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ultrafast single TCP packet audio/visual experience

Home Page: http://packet.city/

License: GNU General Public License v3.0

HTML 21.64% Makefile 3.88% C 57.56% Python 16.92%

fastestwebsiteever's Introduction

what is this?

the greatest website to ever fit in a single TCP packet

optimizations

HTTP compression: choose DEFLATE over GZIP because most browsers accept raw DEFLATE output without a header or checksum so it's shorter/faster. #yolo
send response immediately after TCP session init: avoids 1 round trip (not to spec, seems to confuse Chrome results in Wireshark).
SO_BUSY_POLL: asks the kernel to poll for packets for a given amount of time.
TCP_NODELAY: disable Nagle's algorithm.
echo 1 > /proc/sys/net/ipv4/tcp_low_latency: TCP stack makes decisions that prefer lower latency as opposed to higher throughput.
favicon: reduced gif to 1/2 original frame count, applied lossy LZW compression.
HTML mangling: closing tags are for losers.
bespoke webserver written in C
remove GIF comment extension block, saving 36 bytes (thanks Samy Kamkar)

who made this?

eV ([email protected]), yan ([email protected])

Get in touch today to hear about our 120-byte ad sponsorship opportunities!

credits

visuals based on http://www.p01.org/128b_raytraced_checkboard/ by Mathieu 'p01' Henri
favicon based on http://cultofthepartyparrot.com/
thank you to Candy Japan for the generous sponsorship! surprise Japanese candy boxes twice a month!!

fastestwebsiteever's People

Contributors

Stargazers

Watchers

Forkers

moneytech revista-occams-razor glench justinormont p01 danielandersson ezhangle lgarron shekkbuilder bmeck devlato srdjan amitmotgi amitbmas90 partouf jaskru samyk puppycodes johnjohnsp1 v2-dev adnils e1101 schofieldtyler dimi-kr curioustauseef openube candeira silky fritzhuie jimboweb windlessstorm simple555a bastinrobin malisetti artisdom 7h0m4s vdt meai1 rmmh ideaplexus sthysel beaglebets olivierh59500 neversatisfied paddymahoney lyrl marslabtron mishraabhigyan hoangpq benjamesbabala cwonrails intfrr hhy5277 emamatcyber90 ganapativs guoyu07 jboggs-world bossjones samjaninf vkanko ivmos gmichokostas gigi199596 thezedwards dhirajkanchan alexbudin fnzv kerscher sigttou skyformat99 peter-holm jlollis afcarl maxsaxedesignweb cybersme brianjd supertanglang jomes justforkin seanwestfall mozfreddyb cliffordfajardo ykankaya 5l1v3r1 resonancellc reanimat0r fmarier drarnold ngash icodein

fastestwebsiteever's Issues

ow my ears

Safari

It doesn't seem to work under Safari 11 (macOS 10.13).

Buffer overflow, every time

I recognize that it wouldn't be C without a buffer overflow or two. That said:

    send_buffer = (char*)calloc(numbytes, sizeof(char));	
    hdrbytes = sprintf(send_buffer, "HTTP/1.1 200 k\nContent-Length: %d\ncontent-encoding: deflate\n\n", numbytes);
    memcpy(send_buffer+hdrbytes, buffer, numbytes);

send_buffer has size numbytes. You then copy numbytes worth of data onto a place starting after the beginning of send_buffer. Looks like a buffer overflow to me! Simplest fix is to have an intermediate buffer for the header, and only allocate send_buffer once we know how big it needs to be.

Save some bytes

hdrbytes = sprintf(send_buffer, "HTTP/1.1 200 OK\r\nContent-Length: %d\r\ncontent-encoding: deflate\r\n\r\n", numbytes);

Clients should accept just \n for line termination, so you can shave off 4 \rs
The reason-phrase isn't checked, so you should be able to get away with a single byte here, maybe even zero. Try O.

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