Hacker News with Generative AI: TCP

Multi-Path TCP: revolutionizing connectivity, one path at a time (cloudflare.com)
The Internet is designed to provide multiple paths between two endpoints. Attempts to exploit multi-path opportunities are almost as old as the Internet, culminating in RFCs documenting some of the challenges. Still, today, virtually all end-to-end communication uses only one available path at a time.

Networking, TCP, Internet, Cloud Computing, Performance

17 points by da768 14 days ago | 1 comments

Cloudflare Talks Up Multi-Path TCP but Dings Linux's Less Than Ideal Support (phoronix.com)
The folks at Cloudflare have published another great engineering blog post with this time covering Multi-Path TCP (MPTCP) as a very interesting addition to the TCP spec. But there they acknowledge the less than ideal Linux support especially on the client side.

Networking, Linux, Cloudflare, TCP, Software

4 points by ksec 14 days ago | 0 comments

Linux TCP So_reuseport: Usage and Implementation (rubdos.be)
HAProxy and NGINX are some of the few applications that use the TCP SO_REUSEPORT socket option of the Linux networking stack.

Linux, Networking, TCP, Socket Options, HAProxy

33 points by todsacerdoti 45 days ago | 9 comments

It's time to replace TCP in the datacenter (2023) (arxiv.org)
In spite of its long and successful history, TCP is a poor transport protocol for modern datacenters.

Networking, Data Centers, TCP, Protocol

189 points by ilove_banh_mi 61 days ago | 156 comments

TCP Fast Open? Not so fast (2021) (apnic.net)
In this post I will talk about my experience implementing TCP Fast Open (TFO) while working on PowerDNS Recursor.

Networking, TCP, Performance

36 points by fanf2 87 days ago | 8 comments

Falsehoods programmers believe about TCP (lwn.net)
FWIW, I dropped NetworkManager years ago for `wpa_supplicant`-based management because I had flaky wireless situations (thick concrete walls in the dorms, roaming across campus, etc.) and any whiff of packet loss would announce to the whole machine "no network" and apps would start to freak out and react. However, it was likely to be back Real Soon™ and normal TCP recovery would make it "transparent" (if with a spike in latency).

Networking, TCP, Programming, Software

290 points by todsacerdoti 125 days ago | 223 comments

Bringing insights into TCP resets and timeouts to Cloudflare Radar (cloudflare.com)
Cloudflare handles over 60 million HTTP requests per second globally, with approximately 70% received over TCP connections (the remaining are QUIC/UDP). Ideally, every new TCP connection to Cloudflare would carry at least one request that results in a successful data exchange, but that is far from the truth.

Networking, Cloud Computing, Performance, Security, TCP

68 points by dbelson 135 days ago | 10 comments

Optimizing global message transit latency: a journey through TCP configuration (ably.com)

Networking, Optimization, TCP

90 points by amnonbc 152 days ago | 18 comments

RFC: 64-Bit Sequence Numbers for TCP (watersprings.org)

Networking, TCP, RFC

8 points by hyzyla 154 days ago | 3 comments

Slow TCP Connect on Windows (haxx.se)

Windows, Networking, TCP

21 points by rom1v 157 days ago | 1 comments

Comparing TCP and QUIC (2022) (potaroo.net)