TCP ​

The quantum state of a TCP port is a nice read.

Links ​

• smoltcp - Standalone, event-driven TCP/IP stack that is designed for bare-metal, real-time systems.
• tcpgoon - Test concurrent connections towards a server listening to a TCP port.
• Warp speed Data Transfer (WDT) - Embeddedable library (and command line tool) aiming to transfer data between 2 systems as fast as possible over multiple TCP paths.
• netscanner - TCP/UDP scanner to find open or closed ports.
• TCP/IP Illustrated books
• Masscan - TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes. (HN)
• What I learned attempting the TCP Reset attack (2020)
• What every developer should know about TCP (2020) (HN)
• Building with async/await in Rust (2019)
• clobber - TCP load testing tool, written in async Rust.
• TCPause - Zero-downtime proxy for TCP and UNIX sockets written in Go.
• Toxiproxy - TCP proxy to simulate network and system conditions for chaos and resiliency testing.
• go-tun2socks - tun2socks implementation written in Go.
• Understand (a little) about TCP (2015) (HN)
• NAT Slipstreaming (Lobsters) (Code)
• ProxyChains - Tool that forces any TCP connection made by any given application to follow through proxy like TOR or any other SOCKS4, SOCKS5 or HTTP(S) proxy.
• ProxyChains-NG - Preloader which hooks calls to sockets in dynamically linked programs and redirects it through one or more socks/http proxies.
• Why TCP Over TCP Is A Bad Idea (2001) (HN)
• tcpdump - Powerful command-line packet analyzer. (Web) (Tutorial with examples)
• hping3 - Network tool able to send custom TCP/IP packets and to display target replies like ping do with ICMP replies.
• FreePort - Get a free open TCP port that is ready to use.
• wait-for-it - Pure bash script to test and wait on the availability of a TCP host and port.
• TCPProbe - TCP tool for network performance and path monitoring, including socket statistics.
• BerthaD - Simple, fast, no-nonsense TCP server to store blobs of data by its SHA256 hash.
• Chisel - Fast TCP/UDP Tunnel, Transported over HTTP, Secured via SSH.
• go-tcp - Provides TCP-level socket options that allow manipulation of TCP connection facilities.
• Writing a Simple TCP Server Using Kqueue (2021)
• Talking TCP and UDP with Adam Woodbeck (2021)
• microps - Implementation of a small TCP/IP protocol stack for learning.
• Low-level TCP server in Rust with MIO (2019) (Code)
• Nice illustration of TCP/IP vs. the OSI model
• Armada - High-Performance TCP SYN scanner.
• Name-based Virtual Hosting in TCP
• Let's code a TCP/IP stack (2016) (HN)
• tailscale-sidecar - TCP proxy used to expose services onto a tailscale network without root. Ideal for container environments.
• A TCP Proxy in 30 lines of Rust (Code)
• rproxy - Blazing fast cross-platform transparent TCP&UDP proxy.
• Increase HTTP Performance by Fitting In the Initial TCP Slow Start Window (2021)
• Transcript2Video - Efficient Clip Sequencing from Texts.
• Unit testing a TCP stack (2015) (HN)
• Linux implementation of Homa, a protocol to replace TCP for low-latency RPC (2021) (HN)
• tcpproxy - Proxy TCP connections based on static rules, HTTP Host headers, and SNI server names (Go package or binary).
• rshijack - TCP connection hijacker, rust rewrite of shijack.
• zazkia - TCP proxy to simulate connection problems.
• My Fractal Of Pain From Trying To Do TCP Sockets The First Time (2021)
• udig - Public-key addressed TCP tunnel broker.
• libuinet - Library version of FreeBSD's TCP/IP stack plus extras.
• go-finger - Finger protocol library. Finger protocol is an extremely simple TCP protocol.
• lwIP - Small independent implementation of the TCP/IP protocol suite.
• cproxy - Redirect TCP and UDP traffic made by a program to a proxy, without requiring the program supporting a proxy.
• TCP (Transmission Control Protocol) in OCaml
• Van Jacobson’s Congestion Avoidance and Control
• No PortScan - Watching for TCP port scanning behavior on your networks.
• Announcing Argo for Spectrum (2021) - Way to turbo-charge any TCP based application.
• http-tunnel - HTTP(S) Tunnel and TCP Proxy in Rust.
• The Sad Story of TCP Fast Open (2019)
• tun2socks - Powered by gVisor TCP/IP stack.
• Rabbit TCP - Multi-connection TCP forwarder created for accelerating TCP connections.
• gev - Lightweight, fast non-blocking TCP network library / websocket server based on Reactor mode.
• tun2proxy - Tunnel TCP traffic through SOCKS5 or HTTP using a TUN interface.
• smoltcp-nal - embedded-nal implementation for smoltcp. Implementation of a TCP- and UDP-capable network stack that can be used for any library that leverages the embedded-nal.
• Phantun - Transforms UDP stream into (fake) TCP streams that can go through Layer 3 & Layer 4 (NAPT) firewalls/NATs.
• Linux bcc/BPF tcplife: TCP Lifespans (HN)
• brink - Lightweight Identity-Aware Proxy (IAP) for TCP forwarding.
• flex - Using TCP congestion control methods to find/set real limits of a system over time.
• Going Big with TCP Packets (2022) (HN)
• TCP is harder than it looks (2014)
• get-port - Get an available TCP port.
• Going multipath without Multipath TCP (2022) (HN)
• Bondcat - Netcat like system utility that has the ability to combine multiple TCP connections for better transfer speeds, but also better reliability.
• Socklab - Interactive tool to learn about the socket API for UDP and TCP, without having to actually write C code.
• Benchmark TCP bandwidth and latency with Rust
• TCP Checker - Performing TCP handshake without ACK in Go, useful for health checking, that is SYN, SYN-ACK, RST.
• pync - Arbitrary TCP and UDP connections and listens (Netcat for Python).
• udp-over-tcp - Library (and binaries) for tunneling UDP datagrams over a TCP stream.
• mirage-tcpip - TCP/IP networking stack in pure OCaml, using the Mirage platform libraries. Includes IPv4/6, ICMP, and UDP/TCP support.
• Witness - Run commands when a file is modified or upon receiving TCP/UDP packets.
• ilock - Detect TCP connections, on specific ports, in order to block the corresponding IP addresses, through Packet Filter.
• get-port-please - Get an available TCP port to listen.
• TCP Server GUI - TCP Server with GUI to debug tcp connections.
• Accord - Instant messaging chat system in Rust over TCP with encryption.
• Proximac - Command-line open-source alternative to Proxifier. Force App to use SOCKS5 proxy.
• tsyncp - Simple channel-like APIs over TCP streams for communications between rust services.
• Lurker - Network based honeypot for capturing payload for all TCP ports.
• Ranch - Socket acceptor pool for TCP protocols.
• TCPLS: Modern Transport Services with TCP and TLS (2022)
• moproxy - Transparent TCP to SOCKSv5/HTTP proxy on Linux written in Rust.
• tproxy - CLI tool to proxy and analyze TCP connections.
• Optimizing TCP for high WAN throughput while preserving low latency (2022)
• redsocks - Transparent TCP-to-proxy redirector.
• Introduction to TCP and Sockets (2001) (HN)
• When the window is not fully open, your TCP stack is doing more than you think (2022) (Lobsters)
• speedbump - TCP proxy for simulating variable network latency. (HN)
• TCP over HTTP - TCP proxy using HTTP - Reach SSH behind a Nginx reverse proxy.
• unproxy - Map TCP services behind an HTTP(S) proxy to local ports.
• mixctl - Tiny TCP load balancer.
• p0f - TCP Packet Fingerprinting. (HN)
• Linux Kernel MultiPath TCP Project (HN)
• We need a replacement for TCP in the data center (2022) (HN)
• [Moving past TCP in the data center (2022)]](https://lwn.net/SubscriberLink/913260/8819c42491a70e9b/)
• wa-tunnel - HTTP Tunneling through WhatsApp. (HN)
• rtun - Tool for exposing TCP and UDP ports to the Internet via a public gateway server.
• Fuzzotron - TCP/UDP based network daemon fuzzer.
• Tuntox - Forwards TCP connections over the Tox protocol. This allows low-latency access to distant machines behind a NAT you can't control or with a dynamic IP address.
• zstd-proxy - High-performance real-time TCP compression.
• teeceepee - Mini-TCP stack in Python.
• Tonel - Multi-Stream UDP over TCP Tunneler for Lightning-Fast Network Layer 3 Transmission with TUN Interface.
• tcpdump is amazing (2016) (HN)
• Is It Time to Replace TCP in Data Centers? (2023) (HN)
• dill - Cloud ready L4 TCP proxy with first-class support for dynamic listeners.
• TCP Stream Extractor - Utility that can read in a PCAP file, search through it for TCP streams, and write out each stream to a separate new PCAP file.
• The quantum state of a TCP port (2023)
• EasyTCP - Light-weight TCP framework written in Go (Golang), built with message router. EasyTCP helps you build a TCP server easily fast and less painful.
• Tunnel via Cloudflare to any TCP service (2023) (HN)
• TCP Chat - Simple, quick and lightweight chat built over TCP and Rust. (Reddit)
• Deep-Dive into the Internals of TCP Connection Establishment Process (2023)
• SDL_net - Simple, cross-platform wrapper over TCP/IP sockets.
• tcpproxy - Cross-platform TCP proxy in tokio and rust.