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Add one hop trace

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This commit is contained in:
Jack Kingsman
2026-02-04 15:29:33 -08:00
parent 878626b440
commit fcbab3bf72
11 changed files with 135 additions and 26 deletions
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12
app/models.py
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@@ -195,6 +195,18 @@ class TelemetryResponse(BaseModel):
)
class TraceResponse(BaseModel):
"""Result of a direct (zero-hop) trace to a contact."""
remote_snr: float | None = Field(
default=None, description="SNR at which the target heard us (dB)"
)
local_snr: float | None = Field(
default=None, description="SNR at which we heard the target on the bounce-back (dB)"
)
path_len: int = Field(description="Number of hops in the trace path")
class CommandRequest(BaseModel):
"""Request to send a CLI command to a repeater."""

60
app/routers/contacts.py
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@@ -1,5 +1,6 @@
import asyncio
import logging
import random
from fastapi import APIRouter, BackgroundTasks, HTTPException, Query
from meshcore import EventType
@@ -15,6 +16,7 @@ from app.models import (
NeighborInfo,
TelemetryRequest,
TelemetryResponse,
TraceResponse,
)
from app.packet_processor import start_historical_dm_decryption
from app.radio import radio_manager
@@ -532,3 +534,61 @@ async def send_repeater_command(public_key: str, request: CommandRequest) -> Com
finally:
# Always restart auto-fetch, even if an error occurred
await mc.start_auto_message_fetching()
@router.post("/{public_key}/trace", response_model=TraceResponse)
async def request_trace(public_key: str) -> TraceResponse:
"""Send a direct (zero-hop) trace to a contact and wait for the result.
This sends a trace with no path (direct only, no repeaters) and waits
up to 15 seconds for the TRACE_DATA response.
"""
mc = require_connected()
contact = await ContactRepository.get_by_key_or_prefix(public_key)
if not contact:
raise HTTPException(status_code=404, detail="Contact not found")
tag = random.randint(1, 0xFFFFFFFF)
# Note: unlike command/telemetry endpoints, trace does NOT need
# stop/start_auto_message_fetching because the response arrives as a
# TRACE_DATA event through the reader loop, not via get_msg().
async with pause_polling():
# Ensure contact is on radio so the trace can reach them
await mc.commands.add_contact(contact.to_radio_dict())
logger.info("Sending direct trace to %s (tag=%d)", contact.public_key[:12], tag)
result = await mc.commands.send_trace(path=None, tag=tag)
if result.type == EventType.ERROR:
raise HTTPException(status_code=500, detail=f"Failed to send trace: {result.payload}")
# Wait for the matching TRACE_DATA event
event = await mc.wait_for_event(
EventType.TRACE_DATA,
attribute_filters={"tag": tag},
timeout=15,
)
if event is None:
raise HTTPException(status_code=504, detail="No trace response heard")
trace = event.payload
path = trace.get("path", [])
path_len = trace.get("path_len", 0)
# remote_snr: first entry in path (what the target heard us at)
remote_snr = path[0]["snr"] if path else None
# local_snr: last entry in path (what we heard them at on the bounce-back)
local_snr = path[-1]["snr"] if path else None
logger.info(
"Trace result for %s: path_len=%d, remote_snr=%s, local_snr=%s",
contact.public_key[:12],
path_len,
remote_snr,
local_snr,
)
return TraceResponse(remote_snr=remote_snr, local_snr=local_snr, path_len=path_len)

4
frontend/dist/assets/BotCodeEditor-B21OpXam.js → frontend/dist/assets/BotCodeEditor-BHtq6NSR.js vendored
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2
frontend/dist/assets/BotCodeEditor-B21OpXam.js.map → frontend/dist/assets/BotCodeEditor-BHtq6NSR.js.map vendored
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42
frontend/dist/assets/index-CWnjp-zX.js → frontend/dist/assets/index-Bns2erWl.js vendored
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1
frontend/dist/assets/index-Bns2erWl.js.map vendored Normal file
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frontend/dist/assets/index-CWnjp-zX.js.map vendored
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2
frontend/dist/index.html vendored
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@@ -13,7 +13,7 @@
<link rel="shortcut icon" href="/favicon.ico" />
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
<link rel="manifest" href="/site.webmanifest" />
<script type="module" crossorigin src="/assets/index-CWnjp-zX.js"></script>
<script type="module" crossorigin src="/assets/index-Bns2erWl.js"></script>
<link rel="stylesheet" crossorigin href="/assets/index-DJA5wYVF.css">
</head>
<body>

26
frontend/src/App.tsx
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@@ -693,6 +693,22 @@ export function App() {
[fetchUndecryptedCount]
);
// Handle direct trace request
const handleTrace = useCallback(async () => {
if (!activeConversation || activeConversation.type !== 'contact') return;
toast('Trace started...');
try {
const result = await api.requestTrace(activeConversation.id);
const parts: string[] = [];
if (result.remote_snr !== null) parts.push(`Remote SNR: ${result.remote_snr.toFixed(1)} dB`);
if (result.local_snr !== null) parts.push(`Local SNR: ${result.local_snr.toFixed(1)} dB`);
const detail = parts.join(', ');
toast.success(detail ? `Trace complete! ${detail}` : 'Trace complete!');
} catch {
toast.error('No trace response heard');
}
}, [activeConversation]);
// Handle sort order change via API with optimistic update
const handleSortOrderChange = useCallback(
async (order: 'recent' | 'alpha') => {
@@ -879,6 +895,16 @@ export function App() {
})()}
</span>
<div className="flex items-center gap-1 flex-shrink-0">
{/* Direct trace button (contacts only) */}
{activeConversation.type === 'contact' && (
<button
className="p-1.5 rounded hover:bg-accent text-xl leading-none"
onClick={handleTrace}
title="Direct Trace"
>
&#x1F6CE;
</button>
)}
{/* Favorite button */}
{(activeConversation.type === 'channel' ||
activeConversation.type === 'contact') && (

5
frontend/src/api.ts
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@@ -13,6 +13,7 @@ import type {
RadioConfig,
RadioConfigUpdate,
TelemetryResponse,
TraceResponse,
UnreadCounts,
} from './types';
@@ -114,6 +115,10 @@ export const api = {
method: 'POST',
body: JSON.stringify({ command }),
}),
requestTrace: (publicKey: string) =>
fetchJson<TraceResponse>(`/contacts/${publicKey}/trace`, {
method: 'POST',
}),
// Channels
getChannels: () => fetchJson<Channel[]>('/channels'),

6
frontend/src/types.ts
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@@ -199,6 +199,12 @@ export interface CommandResponse {
sender_timestamp: number | null;
}
export interface TraceResponse {
remote_snr: number | null;
local_snr: number | null;
path_len: number;
}
export interface UnreadCounts {
counts: Record<string, number>;
mentions: Record<string, boolean>;