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https://github.com/jmcorgan/fips.git
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Johnathan Corgan
0fe4fc145f
Carries the experimental native datagram API up as its two commits: the API itself, where a client opens a flow to a peer's public key on a chosen port and reads datagrams off a descriptor the daemon hands it, and the macOS port that builds the listener over SOCK_DGRAM because Darwin has no SOCK_SEQPACKET for AF_UNIX. It is off by default and is not a stable interface. It changes no wire format on either line: every FSP data packet has carried a port pair inside its AEAD envelope since v0.2.0. No conflicts, and no adaptation. `git diff --numstat` for what this merge changes on next matches the master side file for file and count for count, so the merge took master's diff verbatim rather than resolving anything. The instrumentation step count needed no change this time: neither commit touches `src/instr/recorder.rs`, so the pinned figure the previous merge corrected to 28 still describes the tick.
How-To Guides
Task-oriented, step-by-step recipes for operators with a specific goal in mind. Each guide assumes the reader already knows what FIPS is and wants to get a particular thing done — enable a feature, deploy a component, troubleshoot a class of problem.
How-to guides do not teach concepts (that is the role of design/) and do not enumerate options (that is the role of reference/). They take the reader along the shortest correct path from "I want to do X" to "X is done".
Available Guides
| Guide | Goal |
|---|---|
| enable-mesh-firewall.md | Activate the default-deny nftables baseline on fips0 |
| enable-nostr-discovery.md | Turn on Nostr-mediated discovery (3 capabilities — resolve, advertise, open — across 5 scenarios) |
| deploy-tor-onion.md | Run a Tor onion service for inbound FIPS connections |
| tune-udp-buffers.md | Set host sysctls so FIPS UDP sockets don't get clamped |
| tune-file-descriptors.md | Raise RLIMIT_NOFILE so a busy node doesn't exhaust file descriptors (EMFILE) as peer count grows |
| run-as-unprivileged-user.md | Run the daemon under a dedicated unprivileged service account (drops the default-root posture) |
| deploy-gateway.md | Manually deploy fips-gateway on a non-OpenWrt Linux host (LAN-to-mesh outbound + mesh-to-LAN inbound port-forwards). For the OpenWrt path, see the gateway tutorial. |
| troubleshoot-gateway.md | Diagnostic recipes for the gateway, organised by half (outbound, inbound, common) |
| persistent-identity.md | Provision a stable Nostr keypair so the node keeps the same npub across restarts |
| host-aliases.md | Use shortnames (test-us01.fips, my-laptop.fips) instead of full npubs by editing /etc/fips/hosts or setting peer aliases |
| set-up-bluetooth-peer.md | Configure a Bluetooth Low Energy peer link |
| set-up-80211s-mesh-backhaul.md | Link OpenWrt FIPS routers over an open 802.11s radio backhaul (FIPS provides encryption, authentication, and routing) |
| set-up-open-access-ssid.md | Broadcast the open !FIPS access SSID so phones and laptops roam onto the mesh (one ESS: save once, roam every FIPS router) |
| diagnose-mtu-issues.md | Triage MTU-shaped failures and rule out their imposters (bufferbloat, transport saturation) |
| use-the-native-datagram-api.md | Enable the experimental native datagram API and write a program that sends and receives datagrams by pubkey and port (no IPv6 emulation, no TUN). Read the fips group warning first |
| write-a-native-api-client.md | Speak the native datagram API's line protocol directly from C, Python or Go, where there is no client library |
| serve-many-peers-on-one-thread.md | Handle every native API flow from one poll loop instead of a thread per peer |