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feat: initial setup for Meshtastic Heltec V4 node, custom CA HTTPS firmware, backups, and tooling

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Eric X. Liu
2026-09-07 18:15:58 -07:00
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README.md
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# Meshtastic Node Setup & Web Client Integration
This repository maintains the firmware build artifacts, local CA TLS provisioning, device configuration backups, and Kubernetes deployment integration for the local Meshtastic node.
---
## 1. Hardware & Network Overview
* **Hardware**: Heltec WiFi LoRa 32 (V4) / ESP32-S3 (16MB Flash, 2MB PSRAM, 0.96" OLED display)
* **Node MAC**: `f8:5b:1b:a1:bc:60` (Node ID: `!1ba1bc60`, Name: `Meshtastic bc60`)
* **Firmware Base**: Meshtastic `v2.7.26.54e0d8d`
* **Network Connectivity**:
* Wi-Fi DHCP IP: `192.168.20.140`
* mDNS Hostname: `meshtastic.local`
* TCP Port 4403: Meshtastic Protobuf API (CLI and internal RPC)
* TCP Port 443: Native HTTPS server serving `/api/v1/fromradio` and `/api/v1/toradio` with CORS enabled
---
## 2. Architecture & Challenges Solved
### A. Mixed Content & Browser Security
The self-hosted Meshtastic Web Client runs on Kubernetes at `https://meshtastic-web.ericxliu.local` via internal Nginx ingress with TLS. Because the Web Client is a client-side Single Page Application (SPA), the browser makes direct API requests to the radio on LAN:
* **Mixed Content Blocking**: The browser forbids plain HTTP calls from an HTTPS origin.
* **Self-Signed TLS Rejection**: Stock Meshtastic firmware generates a self-signed certificate (`CN=meshtastic.local, O=Meshtastic`), which browsers reject with `NET::ERR_CERT_AUTHORITY_INVALID`.
### B. Custom Local CA Provisioning
* A leaf certificate and private key were issued for `DNS:meshtastic.local` and `DNS:*.meshtastic.local` by Eric's private root CA (`ericxliu.local`, trusted in macOS Keychain).
* Stock Meshtastic stores its HTTPS key and certificate in ESP32 NVS preferences under the `MeshtasticHTTPS` namespace (`PK` and `cert`).
* The custom firmware in [`firmware-custom/`](./firmware-custom/) writes the DER-encoded CA-signed certificate and key directly into these NVS keys on startup. Because stock Meshtastic checks for existing keys before generating a self-signed pair, this CA certificate survives future upgrades.
### C. Handshake Latency & Web Client Timeout
* **Handshake Bottleneck**: In stock firmware (`WebServer.cpp`), `IDLE_INTERVAL_MS` was set to `1000ms`. The multi-round-trip TLS handshake plus 2048-bit RSA computation took **~4.5 to 5.4 seconds**.
* **Hardcoded Client Timeout**: The official web client bundle (`apps/web/src/pages/Connections/utils.ts`) had a hardcoded `2500ms` timeout on `testHttpReachable`. Every test attempt was aborted at 2.5s, marking the device as "Not reachable".
* **The Fix**:
1. Reduced `IDLE_INTERVAL_MS` in firmware to `50ms` (dropping handshake and response time to **~1.34 seconds**).
2. In [`k8s-flux`](https://github.com/eric-x-liu/k8s-flux), added an `initContainer` in `apps/myapp/meshtastic-web/release.yaml` that patches `testHttpReachable` timeout in the bundle from `t=2500` to `t=15000` (15s).
---
## 3. Directory Layout
```
.
├── README.md
├── certs/
│ ├── meshtastic.local.crt # Signed leaf certificate (valid to Oct 2027)
│ └── meshtastic.local.csr # Certificate Signing Request
├── firmware-custom/
│ ├── firmware-heltec-v4-2.7.26.54e0d8d.bin # Custom app0 image with CA cert + 50ms loop
│ ├── firmware-heltec-v4-2.7.26.54e0d8d.factory.bin # Full factory image (bootloader + part + app)
│ ├── MeshtasticTlsCertificate.h # DER cert & key header embedded into build
│ └── patches/
│ └── WebServer.cpp.patch # Diff applied to stock v2.7.26.54e0d8d
├── firmware-2.7.26/ # Stock vendor 2.7.26 firmware binaries
│ ├── firmware-heltec-v4-2.7.26.54e0d8d.factory.bin
│ ├── firmware-heltec-v4-2.7.26.54e0d8d.mt.json
│ ├── littlefs-heltec-v4-2.7.26.54e0d8d.bin
│ └── mt-esp32s3-ota.bin
├── backups/
│ ├── aideepen-lora-v4-factory-f85b1ba1bc60.bin # Original factory 16MB flash dump
│ └── nvs_backup_before_flash.bin # Live NVS partition backup (0x9000, 20KB)
├── docs/
│ └── 91Qt4C5SZBL.pdf # Heltec V4 board schematic and pinouts
└── scripts/
├── flash_custom_firmware.sh # Flash custom firmware to app0 over USB
└── backup_nvs.sh # Backup device NVS partition over USB
```
---
## 4. Maintenance & Operations
### Flash Custom Firmware via USB
Connect the Heltec V4 via USB-C:
```bash
./scripts/flash_custom_firmware.sh /dev/cu.usbmodem1101
```
Or directly with `esptool`:
```bash
esptool --port /dev/cu.usbmodem1101 --baud 921600 write_flash 0x10000 firmware-custom/firmware-heltec-v4-2.7.26.54e0d8d.bin
```
### Backup NVS Configuration
```bash
./scripts/backup_nvs.sh /dev/cu.usbmodem1101
```
### Verify TLS Handshake & API Endpoints
Verify certificate validity using macOS system trust:
```bash
# Must verify without -k / insecure flags
curl -v https://meshtastic.local/api/v1/fromradio
```
Verify CLI over Wi-Fi:
```bash
meshtastic --host meshtastic.local --info
```
### Accessing the Web Client
1. Open **[https://meshtastic-web.ericxliu.local](https://meshtastic-web.ericxliu.local)**.
2. Select **HTTP** connection and set URL to `meshtastic.local` (with **Use HTTPS** enabled).
3. Connection tests complete in ~1.3s and save cleanly.
backups/aideepen-lora-v4-factory-f85b1ba1bc60.bin
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-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
certs/meshtastic.local.csr
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-----BEGIN CERTIFICATE REQUEST-----
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-----END CERTIFICATE REQUEST-----
docs/91Qt4C5SZBL.pdf
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{
"version": "2.7.26.54e0d8d",
"build_epoch": 1782172800,
"platformioTarget": "heltec-v4",
"mcu": "esp32s3",
"repo": "meshtastic/firmware",
"files": [
{
"name": "firmware-heltec-v4-2.7.26.54e0d8d.elf",
"md5": "da898d4a96156262756bb491c0d35023",
"bytes": 22342760
},
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"name": "firmware-heltec-v4-2.7.26.54e0d8d.bin",
"md5": "373b8d2260799b9253d0e63b4944db85",
"bytes": 2117408,
"part_name": "app0"
},
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},
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"part_name": "spiffs"
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"part_name": "app1"
}
],
"has_mui": false,
"has_inkhud": false,
"part": [
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"name": "nvs",
"type": "data",
"subtype": "nvs",
"offset": "0x9000",
"size": "0x5000",
"flags": ""
},
{
"name": "otadata",
"type": "data",
"subtype": "ota",
"offset": "0xe000",
"size": "0x2000",
"flags": ""
},
{
"name": "app0",
"type": "app",
"subtype": "ota_0",
"offset": "0x10000",
"size": "0x640000",
"flags": ""
},
{
"name": "app1",
"type": "app",
"subtype": "ota_1",
"offset": "0x650000",
"size": "0x640000",
"flags": ""
},
{
"name": "spiffs",
"type": "data",
"subtype": "spiffs",
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},
{
"name": "coredump",
"type": "data",
"subtype": "coredump",
"offset": "0xFF0000",
"size": "0x10000",
"flags": ""
}
],
"hwModel": 110,
"hwModelSlug": "HELTEC_V4",
"architecture": "esp32-s3",
"activelySupported": true,
"displayName": "Heltec V4",
"supportLevel": 1,
"images": [
"heltec_v4.svg"
],
"tags": [
"Heltec"
],
"requiresDfu": true,
"partitionScheme": "16MB"
}
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#pragma once
inline constexpr unsigned char meshtasticTlsCertificateDer[] = {
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0xd7, 0xfc, 0xb7, 0xaa, 0x74, 0x89, 0xbc, 0x67, 0x43, 0x64, 0x34, 0xdf,
0xc4, 0xb3, 0x90, 0xbe, 0x5e, 0x7c, 0x9d, 0x8b, 0xbd, 0x53, 0x95, 0x02,
0x03, 0x01, 0x00, 0x01, 0xa3, 0x6d, 0x30, 0x6b, 0x30, 0x2f, 0x06, 0x03,
0x55, 0x1d, 0x11, 0x04, 0x28, 0x30, 0x26, 0x82, 0x10, 0x6d, 0x65, 0x73,
0x68, 0x74, 0x61, 0x73, 0x74, 0x69, 0x63, 0x2e, 0x6c, 0x6f, 0x63, 0x61,
0x6c, 0x82, 0x12, 0x2a, 0x2e, 0x6d, 0x65, 0x73, 0x68, 0x74, 0x61, 0x73,
0x74, 0x69, 0x63, 0x2e, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x30, 0x0e, 0x06,
0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x05,
0xa0, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x25, 0x04, 0x16, 0x30, 0x14,
0x06, 0x08, 0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x01, 0x06, 0x08,
0x2b, 0x06, 0x01, 0x05, 0x05, 0x07, 0x03, 0x02, 0x30, 0x09, 0x06, 0x03,
0x55, 0x1d, 0x13, 0x04, 0x02, 0x30, 0x00, 0x30, 0x0d, 0x06, 0x09, 0x2a,
0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00, 0x03, 0x82,
0x02, 0x01, 0x00, 0x8d, 0xed, 0xa2, 0x76, 0x48, 0xe5, 0x71, 0x03, 0x31,
0x1a, 0xbc, 0x6b, 0x88, 0x3f, 0xdb, 0x2c, 0xfb, 0xa5, 0xed, 0x36, 0x81,
0x42, 0x31, 0x2b, 0xbe, 0xde, 0x80, 0x3a, 0x73, 0x3b, 0x01, 0xdb, 0x13,
0xe9, 0xc6, 0xcb, 0xde, 0x11, 0xcb, 0x4a, 0xb9, 0x93, 0x73, 0xcc, 0xdf,
0xc7, 0xe6, 0xb7, 0x34, 0x7a, 0x90, 0x03, 0xd2, 0x87, 0x37, 0x7a, 0x93,
0x3a, 0x92, 0x22, 0x30, 0x17, 0x21, 0xb4, 0x1e, 0xb4, 0xc1, 0xf0, 0x7f,
0x41, 0xf9, 0x88, 0xa2, 0xc6, 0x38, 0x76, 0x78, 0x07, 0xe8, 0xe5, 0x83,
0xef, 0xcb, 0xd8, 0xd2, 0x56, 0xff, 0x19, 0xce, 0x17, 0x4b, 0x44, 0x55,
0x89, 0x80, 0xe0, 0xfa, 0x97, 0x7b, 0x2d, 0xe9, 0x6b, 0x4b, 0x5a, 0x93,
0x11, 0xe0, 0x13, 0xd2, 0x81, 0xec, 0xce, 0x92, 0x78, 0xaf, 0x19, 0x1a,
0x33, 0x4f, 0x01, 0x3f, 0xaa, 0x77, 0x10, 0xb4, 0xac, 0xcc, 0x78, 0x69,
0xcf, 0xbb, 0xc2, 0x58, 0x6e, 0xe5, 0xc4, 0x1c, 0x22, 0x04, 0x94, 0xd3,
0xaf, 0x6f, 0x96, 0xbc, 0x11, 0xeb, 0xdd, 0x89, 0xcc, 0x45, 0x3a, 0xb1,
0x8a, 0xfa, 0xc0, 0xf5, 0x5d, 0x61, 0x84, 0x18, 0xe8, 0x99, 0x27, 0x77,
0xe4, 0xc2, 0xbb, 0x78, 0x8c, 0xd0, 0xa8, 0xef, 0x47, 0x1c, 0xa7, 0xb8,
0x21, 0x1a, 0x3d, 0xeb, 0x38, 0x2f, 0x00, 0x1a, 0xae, 0xc7, 0x2f, 0x41,
0xa7, 0x13, 0xb9, 0x5c, 0xe5, 0x60, 0x6e, 0x42, 0x74, 0xd4, 0xb9, 0x2e,
0xee, 0x78, 0xb3, 0xea, 0xb7, 0x18, 0x36, 0xe8, 0xc6, 0x41, 0xed, 0xa2,
0xf3, 0xae, 0x5e, 0x4d, 0xbb, 0x7f, 0xad, 0xb0, 0x1d, 0x3c, 0xae, 0x54,
0xc5, 0xa2, 0x44, 0xfd, 0x3a, 0xaf, 0x15, 0xd9, 0xb4, 0xd7, 0xd0, 0x8f,
0xa4, 0xe5, 0xd4, 0x7c, 0x5c, 0x7a, 0x35, 0x07, 0xc7, 0xf2, 0x6a, 0x78,
0x22, 0xe7, 0x6c, 0x23, 0xd2, 0xba, 0x3c, 0xa4, 0x27, 0x1b, 0x39, 0xa5,
0x6e, 0xa2, 0x23, 0x86, 0xa2, 0x6a, 0x16, 0x3a, 0x9e, 0x8c, 0x1e, 0x48,
0x34, 0x81, 0x43, 0x5d, 0x7f, 0xaa, 0x9c, 0x5b, 0x15, 0x70, 0xef, 0xd2,
0x4f, 0x82, 0x3a, 0xb2, 0x4a, 0x1e, 0x60, 0x53, 0xcb, 0xc5, 0xcb, 0x8d,
0x16, 0xf8, 0xd1, 0x00, 0x75, 0x1a, 0x21, 0x4c, 0x22, 0x46, 0x44, 0x75,
0xb8, 0xd9, 0x37, 0x5e, 0x5a, 0xb4, 0xe8, 0x12, 0x91, 0x45, 0xa6, 0x1f,
0x26, 0x76, 0x50, 0x11, 0xcb, 0x40, 0xe6, 0x30, 0x00, 0x6f, 0x1e, 0x1d,
0x1a, 0x45, 0xb3, 0x01, 0x6d, 0x54, 0x08, 0xe2, 0xd7, 0x62, 0xaf, 0x47,
0x0d, 0x94, 0xe1, 0x50, 0x4e, 0xf5, 0x28, 0x2a, 0x54, 0x7b, 0x91, 0xfe,
0x9d, 0x58, 0xca, 0xaf, 0xff, 0x70, 0xfc, 0x12, 0x1a, 0x8f, 0x86, 0x34,
0xd8, 0x82, 0x3c, 0x1f, 0xe4, 0xb0, 0x44, 0xae, 0x38, 0x33, 0x67, 0x7b,
0x74, 0x1a, 0x6f, 0xb6, 0x8a, 0xf6, 0xdf, 0xf7, 0xc2, 0xc4, 0x53, 0x93,
0x5e, 0x26, 0x7f, 0x20, 0x2e, 0x74, 0xb5, 0x1c, 0x8b, 0x99, 0x31, 0xb0,
0x7f, 0xe9, 0x42, 0xff, 0xfd, 0x54, 0xbc, 0x77, 0x5b, 0x5e, 0xce, 0xad,
0xcb, 0x45, 0x0d, 0x9c, 0xa0, 0xc4, 0xf3, 0x99, 0x46, 0xbe, 0xcd, 0xc8,
0x47, 0x0a, 0x4f, 0x20, 0x62, 0x8f, 0xf6, 0x59, 0xc7, 0x11, 0xcf, 0xba,
0xf7, 0x76, 0x2b, 0xb8, 0x1d, 0xa2, 0x5d, 0x58, 0x4c, 0xdb, 0xd2, 0x5a,
0x7e, 0x4e, 0x84, 0xa5, 0xc6, 0xbb, 0x8d, 0x88, 0x11, 0xea, 0x7e, 0x7f,
0x0a, 0xff, 0x64, 0x1d, 0x77, 0x9b, 0xc1, 0x1c, 0x4a, 0x7f, 0x4a, 0xe2,
0xfc, 0xd3, 0xf0, 0x04, 0xdb, 0xf6, 0x4e, 0x11, 0xa3, 0xdd, 0x0a, 0x6b,
0xca, 0xfb, 0x49, 0x5e, 0xee, 0x9e, 0xba, 0x3a, 0x88, 0xaf, 0xc9, 0x7b,
0x33, 0xa3, 0x5e, 0xde, 0xff, 0x3d, 0x1d, 0x7d, 0x09, 0xbc, 0x0d,
};
inline constexpr unsigned char meshtasticTlsPrivateKeyDer[] = {
0x30, 0x82, 0x04, 0xa4, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00,
0xbd, 0x0e, 0xd7, 0x26, 0x6f, 0xe3, 0x78, 0x6f, 0xf7, 0x83, 0xd0, 0x16,
0x20, 0x9e, 0xb0, 0xd2, 0xca, 0x90, 0x55, 0x8a, 0x3a, 0x7c, 0x06, 0xd8,
0x32, 0xc1, 0x31, 0x4e, 0xe5, 0xc8, 0xbe, 0x3a, 0xac, 0xfe, 0x37, 0xcc,
0x33, 0xa3, 0x5c, 0x6e, 0xa3, 0xfa, 0xb5, 0xb9, 0x1c, 0x4e, 0x99, 0xba,
0x74, 0x45, 0xec, 0xb4, 0x7a, 0x87, 0xd3, 0xa9, 0x15, 0xdc, 0x36, 0xcc,
0x53, 0x87, 0xd8, 0xa4, 0x50, 0xde, 0xfe, 0x11, 0xc9, 0x2f, 0xc8, 0xb2,
0x5a, 0xf6, 0x6d, 0x33, 0x27, 0x15, 0xbb, 0x6b, 0xb4, 0xbf, 0xe3, 0xd3,
0x70, 0x73, 0xa8, 0x53, 0x83, 0x16, 0x36, 0xf3, 0xdd, 0x0e, 0x8e, 0x2f,
0x32, 0x22, 0x82, 0x0e, 0xe0, 0x5e, 0xc2, 0x47, 0xb0, 0x0b, 0xa2, 0x7c,
0x3a, 0x91, 0x87, 0xe7, 0xe9, 0xef, 0x1d, 0xa2, 0xe9, 0x1a, 0xda, 0x7b,
0x0e, 0x4b, 0xd4, 0x87, 0x79, 0x51, 0x72, 0x2a, 0x0f, 0x96, 0x82, 0x0a,
0x27, 0x1d, 0xdc, 0x06, 0x53, 0xf2, 0xc7, 0xcc, 0x80, 0x38, 0x3a, 0xd7,
0x71, 0x7b, 0xad, 0x8f, 0x44, 0xf2, 0xed, 0xff, 0x0a, 0xde, 0xe6, 0x2c,
0x6e, 0x61, 0xfa, 0x24, 0x3e, 0x6e, 0xff, 0x01, 0x01, 0x89, 0xbc, 0x84,
0xf9, 0x71, 0xc7, 0x5c, 0x0b, 0xba, 0x56, 0x8b, 0xbc, 0x4e, 0x43, 0xeb,
0x53, 0x80, 0xd1, 0x11, 0x27, 0x5e, 0x3b, 0xa5, 0x72, 0x73, 0xac, 0xe6,
0x4b, 0x86, 0x96, 0xae, 0xb9, 0x70, 0x3b, 0xa9, 0x2e, 0x71, 0xca, 0xb1,
0x30, 0x86, 0x21, 0xaf, 0xf6, 0xef, 0xa7, 0x5c, 0xc0, 0x87, 0x0f, 0xb5,
0x13, 0x4e, 0x41, 0x2c, 0x99, 0xcc, 0x49, 0x47, 0x9d, 0x77, 0x90, 0x1c,
0x21, 0x9a, 0x55, 0x31, 0x9d, 0xd7, 0xfc, 0xb7, 0xaa, 0x74, 0x89, 0xbc,
0x67, 0x43, 0x64, 0x34, 0xdf, 0xc4, 0xb3, 0x90, 0xbe, 0x5e, 0x7c, 0x9d,
0x8b, 0xbd, 0x53, 0x95, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01,
0x01, 0x00, 0xae, 0x26, 0x4a, 0x77, 0xa4, 0x9f, 0x83, 0xa4, 0x97, 0xfa,
0x7a, 0xa6, 0xb7, 0x5b, 0x96, 0x84, 0x45, 0x85, 0x98, 0xd6, 0x20, 0xb3,
0x78, 0xd6, 0x94, 0x42, 0x33, 0xba, 0x7a, 0x9e, 0x64, 0xe4, 0xc5, 0xcf,
0xd2, 0xf4, 0x2e, 0x28, 0xf0, 0x0f, 0x16, 0xcb, 0xed, 0xb3, 0x5b, 0x68,
0xe7, 0xe0, 0xc2, 0x14, 0x5b, 0x4b, 0x90, 0x87, 0x27, 0xa8, 0xdc, 0x73,
0x22, 0xa3, 0x2a, 0xda, 0xba, 0xeb, 0xf9, 0x76, 0xbf, 0xd1, 0x00, 0x63,
0x1c, 0xdb, 0x76, 0x41, 0x03, 0x2c, 0x18, 0x77, 0xc3, 0x52, 0x1e, 0x88,
0x98, 0x43, 0x7f, 0x95, 0x7a, 0x5b, 0x9b, 0x27, 0xce, 0x6c, 0xea, 0x96,
0xea, 0xd0, 0x7c, 0xbd, 0x1e, 0xd2, 0xb7, 0x49, 0x72, 0x6a, 0xf8, 0xb6,
0x6e, 0xf1, 0x42, 0x3e, 0x26, 0x53, 0xb1, 0xc0, 0xca, 0xaa, 0xf3, 0x51,
0x02, 0x2a, 0x52, 0x6b, 0xf5, 0x94, 0xe9, 0x62, 0xe5, 0xe6, 0x53, 0x77,
0xc8, 0x76, 0x00, 0xfc, 0xe0, 0x6e, 0xe9, 0x3f, 0xe4, 0x71, 0x23, 0xf4,
0xc0, 0x5e, 0x34, 0x96, 0x1e, 0x3b, 0xda, 0xfa, 0xa1, 0xb3, 0xf9, 0x28,
0xef, 0x88, 0xc2, 0xf0, 0x00, 0x71, 0x6c, 0x22, 0xe5, 0x27, 0xa8, 0xe8,
0xc2, 0x54, 0x65, 0x9c, 0x14, 0x48, 0x5e, 0x90, 0x10, 0xd4, 0xa6, 0x81,
0xca, 0xbd, 0x8d, 0xc5, 0xbc, 0xb9, 0x40, 0xbb, 0x3d, 0x99, 0xfa, 0x5c,
0x1e, 0x28, 0x0f, 0xf0, 0x9f, 0xd9, 0x31, 0x38, 0x3e, 0x3e, 0x91, 0x3c,
0x68, 0xab, 0x75, 0x43, 0xa3, 0xeb, 0x2b, 0xec, 0xd5, 0xa8, 0x4f, 0x2b,
0xfa, 0x3e, 0xbd, 0x81, 0x47, 0x2b, 0x49, 0x12, 0x23, 0xc9, 0x65, 0xf3,
0xef, 0xb3, 0xa7, 0xd1, 0xb3, 0x11, 0x4e, 0xe7, 0x88, 0x68, 0x51, 0xd9,
0x73, 0x4c, 0x59, 0xc7, 0x4a, 0x50, 0x78, 0x3b, 0xef, 0x45, 0x93, 0x37,
0xf8, 0x7a, 0x36, 0x0f, 0xec, 0x81, 0x02, 0x81, 0x81, 0x00, 0xf2, 0xd1,
0xa3, 0x5e, 0x05, 0xc3, 0xa5, 0x76, 0x37, 0x0b, 0x3f, 0x36, 0x65, 0xfb,
0xd9, 0x6b, 0x04, 0xb6, 0xa9, 0xe5, 0xc3, 0x45, 0xf9, 0xb4, 0xec, 0x18,
0xe6, 0x17, 0xd4, 0x73, 0x0d, 0x71, 0x68, 0x9b, 0x0e, 0x56, 0x63, 0x60,
0xc2, 0xe7, 0xe2, 0x6a, 0x4c, 0x04, 0x39, 0x57, 0x6f, 0x09, 0x1c, 0xc0,
0x43, 0x73, 0xf4, 0x8e, 0x44, 0xee, 0xf1, 0x26, 0xc6, 0xd1, 0x37, 0x90,
0x42, 0x05, 0xbe, 0xee, 0x18, 0xdd, 0x93, 0xf0, 0x78, 0xb6, 0x81, 0x2d,
0xe9, 0x4d, 0x78, 0x76, 0xd9, 0x10, 0x63, 0xe5, 0xbc, 0x60, 0xc4, 0x6e,
0xad, 0x6b, 0x67, 0x4d, 0x04, 0x18, 0x3d, 0x63, 0xe5, 0x87, 0xb5, 0x7c,
0x29, 0xd3, 0x2d, 0xa2, 0x82, 0x66, 0x07, 0x1a, 0x64, 0x6a, 0x1e, 0x00,
0x11, 0x1d, 0xcf, 0x4e, 0x3f, 0x46, 0x05, 0xf8, 0x8a, 0xe2, 0x75, 0xb2,
0xae, 0x66, 0x9f, 0x9c, 0x3b, 0x75, 0x02, 0x81, 0x81, 0x00, 0xc7, 0x52,
0x1b, 0x6b, 0x71, 0x45, 0x60, 0x99, 0xcc, 0xbc, 0xa9, 0x9a, 0x79, 0x0c,
0x20, 0x23, 0xcf, 0x2b, 0xc9, 0x23, 0x4d, 0xc4, 0xcc, 0xe8, 0xac, 0x0e,
0xb5, 0xf1, 0x8e, 0x1a, 0x62, 0x80, 0x12, 0xae, 0xe6, 0xce, 0x04, 0x99,
0x1f, 0xf5, 0xe9, 0xde, 0x83, 0x92, 0x77, 0x2e, 0xa4, 0x44, 0xb9, 0xe9,
0x8d, 0x01, 0xa0, 0xf9, 0xf5, 0x34, 0xfa, 0x8b, 0x94, 0x68, 0x62, 0x32,
0xbc, 0x48, 0x6e, 0x32, 0x3c, 0x1f, 0x61, 0x7a, 0xf6, 0xa4, 0x3a, 0x68,
0xb1, 0x80, 0x4a, 0xd6, 0xb6, 0xa6, 0x81, 0x10, 0x18, 0x0e, 0x91, 0x56,
0x56, 0x4f, 0x2f, 0x8b, 0x24, 0xd4, 0x58, 0x13, 0x8a, 0x54, 0x05, 0xc3,
0x23, 0x0c, 0x46, 0xc6, 0xd8, 0x59, 0xb4, 0x28, 0x81, 0xdd, 0xd9, 0xba,
0x58, 0xd0, 0xe1, 0xe3, 0xb7, 0x0e, 0x61, 0xa6, 0xc6, 0xa7, 0x39, 0xb7,
0x6b, 0xf9, 0xf0, 0xc1, 0x53, 0xa1, 0x02, 0x81, 0x81, 0x00, 0x91, 0x45,
0x9c, 0xf0, 0xbe, 0x90, 0x1b, 0xa9, 0x0b, 0x2b, 0x7e, 0x69, 0x24, 0x40,
0xb6, 0x06, 0x11, 0xee, 0xda, 0xdc, 0xac, 0xa4, 0x6b, 0xcd, 0xb3, 0x46,
0xfe, 0x3a, 0x19, 0x8f, 0xaf, 0xe6, 0x3e, 0xc8, 0x2d, 0x9e, 0xbf, 0x9b,
0xff, 0x5f, 0xce, 0x14, 0xfc, 0x5f, 0xb6, 0x92, 0xb9, 0xca, 0x80, 0xda,
0x02, 0x41, 0x18, 0x7a, 0x19, 0x81, 0xbe, 0xe3, 0x0d, 0x25, 0xd4, 0x91,
0x48, 0xfe, 0xb9, 0x09, 0x27, 0xf5, 0x40, 0xf2, 0x28, 0xb6, 0x3f, 0xb8,
0xe1, 0x10, 0xc9, 0x56, 0x89, 0x6d, 0x05, 0xe7, 0x47, 0x79, 0xb9, 0x6b,
0xe1, 0xf3, 0x14, 0xfd, 0x7d, 0xca, 0xa6, 0xc7, 0xe2, 0x65, 0xfb, 0xcd,
0x4a, 0x14, 0x9f, 0x03, 0xcf, 0xf2, 0x0c, 0xa3, 0xdc, 0x99, 0xa4, 0x53,
0x33, 0xea, 0x5a, 0xc1, 0x9c, 0x97, 0x5f, 0x31, 0x20, 0x9e, 0x75, 0xfe,
0x2d, 0xdb, 0x15, 0xf8, 0xd9, 0x95, 0x02, 0x81, 0x80, 0x5e, 0x3d, 0x39,
0xed, 0xa0, 0xce, 0x96, 0x8f, 0xe1, 0x37, 0x4a, 0x51, 0x58, 0xee, 0x1c,
0xbc, 0x11, 0x95, 0xb8, 0x31, 0xd2, 0xf1, 0x3b, 0x98, 0xbe, 0xd0, 0xed,
0xc1, 0x59, 0xd8, 0xab, 0xbd, 0xb6, 0x17, 0xaf, 0xd4, 0xb4, 0x63, 0xd9,
0xb2, 0xa1, 0x72, 0xad, 0x6e, 0xb0, 0x9f, 0x02, 0xd7, 0xe3, 0xb6, 0xc3,
0x0e, 0x84, 0x17, 0xea, 0x91, 0xb3, 0xec, 0x0e, 0xad, 0x13, 0xd0, 0xbd,
0x28, 0xd9, 0xc1, 0x32, 0x9f, 0xfb, 0xac, 0xf1, 0xb4, 0x50, 0x51, 0x73,
0xab, 0x1e, 0xb7, 0x4a, 0x00, 0x8b, 0x81, 0x1a, 0x7e, 0xb8, 0xc4, 0xc3,
0x66, 0x09, 0x2a, 0x96, 0xad, 0x37, 0x3f, 0x75, 0xe5, 0xa8, 0x1b, 0xcd,
0x14, 0x5e, 0xda, 0x61, 0x2c, 0x78, 0x7b, 0xb6, 0x7b, 0x38, 0x18, 0x5d,
0x29, 0xd5, 0xc3, 0x9e, 0xa7, 0x54, 0x10, 0x50, 0x58, 0x7c, 0x77, 0x76,
0xbb, 0xe3, 0xd2, 0xe4, 0x41, 0x02, 0x81, 0x80, 0x26, 0xb2, 0xde, 0x69,
0xb8, 0x48, 0x01, 0x1c, 0x90, 0x9b, 0x4b, 0x67, 0x70, 0x6a, 0x4e, 0xb5,
0xfe, 0x9a, 0x5a, 0xb3, 0x2b, 0x60, 0x1f, 0xf7, 0xa3, 0x25, 0xd2, 0x3e,
0x9e, 0x90, 0xf9, 0x5b, 0x88, 0x55, 0x6c, 0x61, 0x7a, 0x24, 0x6e, 0x97,
0x78, 0x4d, 0x26, 0xd7, 0x87, 0xc8, 0x75, 0xec, 0xdd, 0x24, 0xfd, 0x81,
0x24, 0x76, 0xa3, 0x23, 0x73, 0x26, 0xe3, 0x89, 0xba, 0x08, 0xbc, 0x99,
0x2b, 0xd0, 0xee, 0x4b, 0xe5, 0x2b, 0x8a, 0x34, 0xf6, 0xdb, 0x33, 0xad,
0x12, 0xd1, 0x3b, 0x50, 0xb2, 0x0e, 0x12, 0xc3, 0x52, 0xdf, 0xbf, 0x26,
0x40, 0x0d, 0x09, 0x09, 0xb1, 0x36, 0x66, 0x1c, 0xb4, 0x12, 0xdb, 0x79,
0x3d, 0x16, 0x5a, 0xe2, 0xee, 0x96, 0x96, 0x56, 0xf0, 0x21, 0x07, 0x20,
0xda, 0xdc, 0x52, 0x97, 0x3a, 0xa9, 0xfa, 0xc5, 0x68, 0x45, 0xe4, 0xc6,
0x0f, 0x2c, 0xa4, 0x05,
};
firmware-custom/firmware-heltec-v4-2.7.26.54e0d8d.bin
BIN
View File
Binary file not shown.
firmware-custom/firmware-heltec-v4-2.7.26.54e0d8d.factory.bin
BIN
View File
Binary file not shown.
firmware-custom/patches/WebServer.cpp.patch
+38
View File
@@ -0,0 +1,38 @@
diff --git a/src/mesh/http/WebServer.cpp b/src/mesh/http/WebServer.cpp
index 90fd8b0..c47f50a 100644
--- a/src/mesh/http/WebServer.cpp
+++ b/src/mesh/http/WebServer.cpp
@@ -3,6 +3,7 @@
#include "NodeDB.h"
#include "graphics/Screen.h"
#include "main.h"
+#include "mesh/http/MeshtasticTlsCertificate.h"
#include "mesh/http/WebServer.h"
#include "mesh/wifi/WiFiAPClient.h"
#include "sleep.h"
@@ -52,9 +53,9 @@ using namespace httpsserver;
static const uint32_t ACTIVE_THRESHOLD_MS = 5000;
static const uint32_t MEDIUM_THRESHOLD_MS = 30000;
-static const int32_t ACTIVE_INTERVAL_MS = 50;
-static const int32_t MEDIUM_INTERVAL_MS = 200;
-static const int32_t IDLE_INTERVAL_MS = 1000;
+static const int32_t ACTIVE_INTERVAL_MS = 20;
+static const int32_t MEDIUM_INTERVAL_MS = 50;
+static const int32_t IDLE_INTERVAL_MS = 50;
// Maximum concurrent HTTPS connections (reduced from default 4 to save memory)
static const uint8_t MAX_HTTPS_CONNECTIONS = 2;
@@ -97,6 +98,12 @@ static void taskCreateCert(void *parameter)
{
prefs.begin("MeshtasticHTTPS", false);
+ // Provision the CA-signed meshtastic.local certificate into the same NVS
+ // keys used by the stock firmware. The certificate survives later OTA
+ // upgrades back to an unmodified Meshtastic build.
+ prefs.putBytes("PK", meshtasticTlsPrivateKeyDer, sizeof(meshtasticTlsPrivateKeyDer));
+ prefs.putBytes("cert", meshtasticTlsCertificateDer, sizeof(meshtasticTlsCertificateDer));
+
#if 0
// Delete the saved certs (used in debugging)
LOG_DEBUG("Delete any saved SSL keys");
scripts/backup_nvs.sh
Executable
+14
View File
@@ -0,0 +1,14 @@
#!/usr/bin/env bash
set -euo pipefail
PORT="${1:-/dev/cu.usbmodem1101}"
BACKUP_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/backups"
TIMESTAMP="$(date +%Y%m%d_%H%M%S)"
TARGET_FILE="${BACKUP_DIR}/nvs_backup_${TIMESTAMP}.bin"
ESPTOOL_BIN="$(which esptool || which esptool.py || echo "${HOME}/.local/bin/esptool.py")"
mkdir -p "$BACKUP_DIR"
echo "Backing up NVS partition (0x9000, 0x5000) to $TARGET_FILE..."
"$ESPTOOL_BIN" --port "$PORT" read_flash 0x9000 0x5000 "$TARGET_FILE"
echo "NVS backup complete: $TARGET_FILE"
scripts/flash_custom_firmware.sh
Executable
+18
View File
@@ -0,0 +1,18 @@
#!/usr/bin/env bash
set -euo pipefail
PORT="${1:-/dev/cu.usbmodem1101}"
OFFSET="${2:-0x10000}"
BIN_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/firmware-custom"
BIN_FILE="${BIN_DIR}/firmware-heltec-v4-2.7.26.54e0d8d.bin"
if [[ ! -f "$BIN_FILE" ]]; then
echo "Error: Firmware binary not found at $BIN_FILE" >&2
exit 1
fi
ESPTOOL_BIN="$(which esptool || which esptool.py || echo "${HOME}/.local/bin/esptool.py")"
echo "Flashing $BIN_FILE to $PORT at offset $OFFSET..."
"$ESPTOOL_BIN" --port "$PORT" --baud 921600 write_flash "$OFFSET" "$BIN_FILE"
echo "Flash completed successfully."