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Design documentation illustration pass and FLP→FMP rename

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Rename FIPS Link Protocol (FLP) to FIPS Mesh Protocol (FMP)

  The "Link Protocol" name understated the layer's scope — spanning tree
  construction, bloom filter routing, greedy forwarding, and mesh-wide
  coordination go well beyond link-level concerns. Rename fips-link-layer.md
  to fips-mesh-layer.md, update FLP→FMP throughout docs and source code
  (FLP_VERSION→FMP_VERSION, wire.rs, rx_loop.rs, spanning_tree.rs).

New SVG illustrations

  - Protocol stack: color-coded layer diagram replacing ASCII art
  - OSI mapping: side-by-side comparison with traditional networking layers
  - Bloom filter propagation: 6-node tree with sender-colored filter boxes
    showing split-horizon computation per link
  - Routing decision flowchart: 5-step priority chain with candidate ranking
    by tree distance and link performance
  - Coordinate discovery: sequence diagram showing LookupRequest propagation,
    response caching, and SessionSetup cache warming

Redesigned existing SVGs

  - Architecture overview: uniform node layout, U-shaped encrypted link
    connectors, separate end-to-end session line
  - Node architecture: split Router Core into FSP and FMP layers, reorganize
    transports into Overlay/Shared Medium/Point-to-Point categories
  - Identity derivation: wider boxes, visible encode arrow, dashed npub line

fips-intro.md revisions

  - Add inline references to prior work: Yggdrasil/Ironwood for coordinate
    routing, Noise Protocol Framework for IK handshakes, WireGuard for
    index-based session dispatch, Wikipedia for bloom filters, split-horizon,
    and greedy embedding
  - Add explanatory paragraphs after bloom filter diagram describing
    split-horizon filter computation and candidate selection behavior
  - Simplify transport abstraction language, remove I2P/LoRa references
  - Fix LookupRequest wording ("propagates" not "floods"), note intermediate
    node coordinate caching on lookup responses
  - Rewrite architecture overview prose to match redesigned diagrams
This commit is contained in:
Johnathan Corgan
2026-02-21 22:05:44 +00:00
parent 19efe06622
commit 0a72317b59
27 changed files with 997 additions and 502 deletions
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src/node/tests/spanning_tree.rs
+2 -2
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@@ -204,7 +204,7 @@ pub(super) fn print_tree_snapshot(label: &str, nodes: &[TestNode]) {
///
/// Returns the number of packets processed.
pub(super) async fn process_available_packets(nodes: &mut [TestNode]) -> usize {
use crate::node::wire::{CommonPrefix, FLP_VERSION, PHASE_ESTABLISHED, PHASE_MSG1, PHASE_MSG2, COMMON_PREFIX_SIZE};
use crate::node::wire::{CommonPrefix, FMP_VERSION, PHASE_ESTABLISHED, PHASE_MSG1, PHASE_MSG2, COMMON_PREFIX_SIZE};
let mut count = 0;
for node in nodes.iter_mut() {
@@ -213,7 +213,7 @@ pub(super) async fn process_available_packets(nodes: &mut [TestNode]) -> usize {
continue;
}
if let Some(prefix) = CommonPrefix::parse(&packet.data) {
if prefix.version != FLP_VERSION {
if prefix.version != FMP_VERSION {
continue;
}
match prefix.phase {