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jackandClaude Fable 5
18dcc747d7
Part A — source-route origination policy: - Gate route application (BLESourceRouteOriginationPolicy): only packets we author, directed at a single peer, with TTL headroom, whose recipient is not directly connected. Relays no longer attach routes to (and re-sign) packets they merely forward. - Version-gate paths: MeshTopologyTracker records the highest protocol version observed per peer; BFS routes require every intermediate hop and the recipient to be v2-observed, capped at 4 intermediate hops. - Degrade on failure: BLESourceRouteFailureCache marks a routed send that sees no inbound traffic from the recipient within 10s as failed and floods for 60s before retrying routes. Part B — REQUEST_SYNC fragmentIdFilter (TLV 0x06): - Requester: BLEFragmentAssemblyBuffer reports stalled broadcast reassemblies (no new fragment for 5s, retried at most every 10s); the maintenance pass sends a types=fragment REQUEST_SYNC naming the stalled 8-byte fragment stream IDs to each connected peer. - Responder: GossipSyncManager restricts the fragment diff to exactly the named streams, bypassing the since-cursor while the GCS filter still excludes pieces the requester holds; RSR/TTL-0/rate-limit semantics unchanged and REQUEST_SYNC stays link-local. - Bounds: at most 60 IDs per request (60*17-1 = 1019 bytes <= the 1024-byte decoder cap); oversized 0x06 values are ignored, not fatal. Docs: SOURCE_ROUTING.md gains the iOS origination policy (§8); REQUEST_SYNC_MANAGER.md documents 0x05/0x06 as implemented. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
99 lines
3.2 KiB
Swift
99 lines
3.2 KiB
Swift
//
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// BLESourceRouteOriginationPolicyTests.swift
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// bitchatTests
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//
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// This is free and unencumbered software released into the public domain.
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// For more information, see <https://unlicense.org>
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//
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import Testing
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import Foundation
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import BitFoundation
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@testable import bitchat
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struct BLESourceRouteOriginationPolicyTests {
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private let localPeerIDData = Data(hexString: "0102030405060708")!
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private let recipient = PeerID(str: "1112131415161718")
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private let hop = Data(hexString: "2122232425262728")!
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private func makePacket(
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senderID: Data? = nil,
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recipientID: Data? = Data(hexString: "1112131415161718"),
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ttl: UInt8 = 7
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) -> BitchatPacket {
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BitchatPacket(
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type: MessageType.noiseEncrypted.rawValue,
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senderID: senderID ?? localPeerIDData,
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recipientID: recipientID,
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timestamp: UInt64(Date().timeIntervalSince1970 * 1000),
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payload: Data([0x01]),
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signature: nil,
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ttl: ttl
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)
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}
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private func route(
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packet: BitchatPacket,
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isRecipientConnected: Bool = false,
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shouldAttemptRoute: Bool = true,
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computedRoute: [Data]? = nil
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) -> [Data]? {
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BLESourceRouteOriginationPolicy.route(
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for: packet,
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to: recipient,
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localPeerIDData: localPeerIDData,
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isRecipientConnected: { _ in isRecipientConnected },
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shouldAttemptRoute: { _ in shouldAttemptRoute },
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computeRoute: { _ in computedRoute ?? [self.hop] }
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)
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}
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@Test func routesWhenAllGatesPass() {
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#expect(route(packet: makePacket()) == [hop])
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}
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@Test func relayedPacketNeverGetsRoute() {
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let relayed = makePacket(senderID: Data(hexString: "aabbccddeeff0011"))
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#expect(route(packet: relayed) == nil)
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}
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@Test func broadcastRecipientNeverGetsRoute() {
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let broadcast = makePacket(recipientID: Data(repeating: 0xFF, count: 8))
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#expect(route(packet: broadcast) == nil)
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let noRecipient = makePacket(recipientID: nil)
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#expect(route(packet: noRecipient) == nil)
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}
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@Test func linkLocalTTLNeverGetsRoute() {
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// TTL 0/1 packets (e.g. REQUEST_SYNC) cannot traverse hops.
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#expect(route(packet: makePacket(ttl: 0)) == nil)
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#expect(route(packet: makePacket(ttl: 1)) == nil)
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}
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@Test func directlyConnectedRecipientNeverGetsRoute() {
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#expect(route(packet: makePacket(), isRecipientConnected: true) == nil)
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}
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@Test func suppressedRecipientFallsBackToFlood() {
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#expect(route(packet: makePacket(), shouldAttemptRoute: false) == nil)
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}
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@Test func missingOrEmptyRouteFallsBackToFlood() {
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var sawComputeRoute = false
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let result = BLESourceRouteOriginationPolicy.route(
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for: makePacket(),
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to: recipient,
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localPeerIDData: localPeerIDData,
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isRecipientConnected: { _ in false },
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shouldAttemptRoute: { _ in true },
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computeRoute: { _ in
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sawComputeRoute = true
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return nil
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}
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)
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#expect(result == nil)
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#expect(sawComputeRoute)
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#expect(route(packet: makePacket(), computedRoute: []) == nil)
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}
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}
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