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Announces now carry an optional capabilities TLV (0x05): a little-endian bitfield with named bits for upcoming features (prekeys, wifiBulk, gateway, groups, board, vouch, meshDiagnostics). Old clients skip the unknown TLV; peers without it decode as nil so features can distinguish "legacy peer" from "advertises nothing". PeerCapabilities lives in BitFoundation with a minimal-length encoding that preserves unknown bits for forward compatibility. Peer capabilities are stored in the BLE peer registry on verified announce and exposed via BLEService.peerCapabilities(_:). The local advertisement set is empty until each feature ships its bit. Co-authored-by: jack <jackjackbits@users.noreply.github.com> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
44 lines
1.6 KiB
Swift
44 lines
1.6 KiB
Swift
//
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// PeerCapabilitiesTests.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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@testable import BitFoundation
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struct PeerCapabilitiesTests {
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@Test
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func encodingIsMinimalAndRoundTrips() {
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#expect(PeerCapabilities([]).encoded() == Data([0x00]))
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#expect(PeerCapabilities.prekeys.encoded() == Data([0x01]))
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#expect(PeerCapabilities.meshDiagnostics.encoded() == Data([0x40]))
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let high = PeerCapabilities(rawValue: 1 << 9)
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#expect(high.encoded() == Data([0x00, 0x02]))
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let all: PeerCapabilities = [.prekeys, .wifiBulk, .gateway, .groups, .board, .vouch, .meshDiagnostics]
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#expect(PeerCapabilities(encoded: all.encoded()) == all)
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#expect(PeerCapabilities(encoded: high.encoded()) == high)
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#expect(PeerCapabilities(encoded: PeerCapabilities([]).encoded()) == [])
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}
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@Test
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func decodingToleratesUnknownBitsAndOversizedFields() {
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// Unknown bits survive a round-trip untouched.
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let unknown = PeerCapabilities(encoded: Data([0xFF, 0xFF]))
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#expect(unknown.rawValue == 0xFFFF)
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#expect(unknown.contains(.gateway))
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// Fields longer than 8 bytes keep the low 64 bits and ignore the rest.
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let oversized = Data([0x01] + [UInt8](repeating: 0x00, count: 7) + [0xAA, 0xBB])
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#expect(PeerCapabilities(encoded: oversized) == .prekeys)
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// Empty value decodes to no capabilities.
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#expect(PeerCapabilities(encoded: Data()) == [])
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}
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}
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