PortFlow

Neural bridge for Laravel × Hardware. Connect thermal printers, IoT sensors, RS-232 scales, barcode scanners, and any serial device to your Laravel application — all through a clean, driver-based architecture and the browser's Web Serial API.

What is PortFlow?
Architecture
Requirements
Installation
Quick Start
Available Drivers
Creating a Custom Driver
Web Serial Integration
Hardware → Events & Eloquent
- Queue-Based Routing
Thermal Printing Engine
IoT Frame Buffering
- Buffer Persistence Across Requests
Blade & Livewire Components
Security
Configuration Reference
Testing
Contributing
License

What is PortFlow?

Most Laravel packages live entirely in software. PortFlow does not.

It bridges physical hardware (printers, scales, sensors, microcontrollers) with Laravel's event system and database, translating raw serial bytes into typed, routable SerialFrame DTOs that your application can consume like any other event.

Browser (Web Serial API)
       │
       │  POST /portflow/ingest  { driver: "raw-json", chunk: "..." }
       ▼
Laravel (IngestController → PortFlowManager → DriverRegistry)
       │
       ├── parse inbound bytes → SerialFrame[]
       │
       ├── route synchronously or via Queue → Laravel Events
       │
       └── persist to Eloquent models

Architecture

PortFlow follows Clean Architecture — domain logic is completely isolated from infrastructure:

src/
├── Domain/
│   ├── Contracts/
│   │   ├── SerialDriver.php          ← Interface all drivers implement
│   │   └── SerialEvent.php           ← Marker interface for domain events
│   ├── DTO/
│   │   └── SerialFrame.php           ← Immutable parsed-frame value object
│   ├── Events/
│   │   └── ProductScanned.php        ← Example domain event
│   └── Services/
│       └── IoTFrameBuffer.php        ← Byte-stream accumulation buffer
│
├── Application/
│   ├── Jobs/
│   │   └── RouteSerialFrameJob.php   ← Queueable frame routing job
│   └── Services/
│       ├── DriverRegistry.php        ← Resolves driver instances
│       ├── HardwareMessageService.php← Orchestrates ingest / encode
│       └── MessageRouter.php         ← Routes frames → Events / Eloquent
│
├── Infrastructure/
│   ├── Drivers/
│   │   ├── RawJsonDriver.php         ← ESP32, Arduino, MQTT payloads
│   │   ├── BarcodeLineDriver.php     ← Barcode scanners (ASCII line mode)
│   │   ├── RfidAsciiDriver.php       ← STX/ETX RFID ASCII readers
│   │   ├── FingerprintPacketDriver.php ← Binary UART fingerprint modules
│   │   ├── EscPosDriver.php          ← Thermal printers + barcode scanners
│   │   └── Rs232Driver.php           ← RS-232 scales and legacy devices
│   ├── Http/Controllers/
│   │   └── IngestController.php      ← POST endpoint consumed by JS bridge
│   ├── Livewire/
│   │   ├── PortFlowConnector.php     ← Tracks port connection state
│   │   └── PortFlowStatus.php        ← Real-time status display
│   └── Printing/
│       ├── EscPosBuilder.php         ← Fluent ESC/POS byte builder
│       └── BladeEscPosRenderer.php   ← Renders Blade → ESC/POS bytes
│
├── Console/Commands/
│   ├── MakeDriverCommand.php         ← php artisan portflow:make-driver
│   └── ListenSerialCommand.php       ← php artisan portflow:listen
│
├── Exceptions/
│   └── PortFlowException.php
├── Facades/
│   └── PortFlow.php
└── PortFlowServiceProvider.php

Requirements

Dependency	Version	Notes
PHP	`^8.2`	PHP 8.3+ recommended for Laravel 13
Laravel	`^11.0 \| ^12.0 \| ^13.0`	All actively supported versions
Livewire	`^3.0`

Browser support for Web Serial API: Chrome 89+, Edge 89+. Not supported in Firefox or Safari.

Installation

composer require hamzi/portflow

Publish the config file:

php artisan vendor:publish --tag=portflow-config

Publish the JavaScript bridge (optional):

php artisan vendor:publish --tag=portflow-assets

Publish driver stubs (optional — for customising the make:driver template):

php artisan vendor:publish --tag=portflow-stubs

Quick Start

1. Add the JS bridge to your layout:

<script src="{{ asset('vendor/portflow/portflow-serial.js') }}"></script>

2. Drop in the Livewire connector component:

<livewire:portflow-connector :baud-rate="115200" :auto-connect-on-load="true" />

The connector now bootstraps sensible defaults from config/portflow.php automatically, including the ingest URL, default driver, and baud rate. Override them from Blade when needed instead of rendering a select box for the end user.

If :baud-rate is explicitly passed in Blade, PortFlow gives it priority over remembered localStorage values.

Useful Blade props:

<livewire:portflow-connector
  :baud-rate="115200"
  driver="raw-json"
  :auto-connect-on-load="true"
  :context="['device' => 'esp32-line-a']"
  :filters="[['usbVendorId' => 6790, 'usbProductId' => 29987]]"
  browser-chunk-event="esp32-browser-frame"
  livewire-chunk-event="esp32-livewire-frame"
/>

When auto-connect-on-load is enabled, PortFlow asks the browser for already-authorized serial devices with navigator.serial.getPorts() and reconnects automatically after reload when permission still exists.

3. Listen for hardware events in your application:

use Hamzi\PortFlow\Domain\Events\ProductScanned;

class HandleBarcodeScan
{
    public function handle(ProductScanned $event): void
    {
        $product = Product::where('barcode', $event->barcode)->firstOrFail();
        // process $product ...
    }
}

Event::listen(ProductScanned::class, HandleBarcodeScan::class);

Available Drivers

RAW / JSON Driver

Use case: ESP32, Arduino, MQTT-to-serial bridges, custom IoT sensors.

The driver accumulates bytes into an IoTFrameBuffer and emits complete JSON frames when a newline delimiter is detected. Invalid JSON is forwarded as { "raw": "..." } so data is never silently dropped.

// config/portflow.php
'default_driver' => 'raw-json',

'driver_options' => [
    'raw-json' => [
        'delimiter' => "\n",
        'max_bytes'  => 16384,   // rolling buffer ceiling
    ],
],

Inbound frame from an ESP32:

{ "type": "barcode.scan", "barcode": "4006381333931" }

Mapping it to a Laravel event:

'mappings' => [
    [
        'driver'              => 'raw-json',
        'payload_field'       => 'type',
        'equals'              => 'barcode.scan',
        'event'               => ProductScanned::class,
        'event_payload_field' => 'barcode',
    ],
],

ESC/POS Driver

Use case: Thermal receipt printers and USB barcode scanners (which behave like keyboards).

The ESC/POS driver handles both directions:

Inbound — scanner sends a barcode string that becomes a SerialFrame.
Outbound — PortFlow::encode('escpos', ['text' => $line]) returns bytes to send to the printer.

Printing a Blade template:

$bytes = PortFlow::print('receipts.order', ['order' => $order]);
// $bytes can be sent directly to the printer via Web Serial

Building ESC/POS bytes manually:

use Hamzi\PortFlow\Infrastructure\Printing\EscPosBuilder;

$bytes = (new EscPosBuilder)
    ->align('center')
    ->bold()
    ->text('ACME STORE')
    ->bold(false)
    ->divider()
    ->align('left')
    ->text('Item 1 ................. $9.99')
    ->text('Item 2 ................. $4.50')
    ->divider()
    ->bold()
    ->text('TOTAL ................. $14.49')
    ->bold(false)
    ->feed(3)
    ->cut()
    ->bytes();

Available EscPosBuilder methods:

Method	ESC/POS Command	Description
`text(string $value)`	—	Append a line of text
`bold(bool $on = true)`	`ESC E n`	Toggle bold
`underline(bool $on = true)`	`ESC - n`	Toggle underline
`align(string)`	`ESC a n`	`'left'`, `'center'`, `'right'`
`divider(int $width = 48)`	—	Print a dash line separator
`feed(int $lines = 1)`	`LF`	Feed blank lines
`cut(bool $partial = false)`	`GS V`	Cut paper (full or partial)
`bytes()`	—	Return accumulated byte string

RS-232 Driver

Use case: Industrial scales, label printers, and legacy serial devices using semicolon-delimited records.

Example record:

12.500;kg;SCALE-A1

Parsed into:

$frame->payload['weight']   // "12.500"
$frame->payload['segments'] // ["12.500", "kg", "SCALE-A1"]
$frame->payload['raw']      // "12.500;kg;SCALE-A1"

Encoding outbound commands:

PortFlow::encode('rs232', ['TARE', '0', 'RESET']);
// → "TARE,0,RESET\n"

Creating a Custom Driver

Using the Artisan Generator

php artisan portflow:make-driver MyScale
# creates app/SerialDrivers/MyScaleDriver.php

php artisan portflow:make-driver Modbus --namespace="App\\Hardware\\Drivers"
# creates app/Hardware/Drivers/ModbusDriver.php

Then register it in your config:

// config/portflow.php
'drivers' => [
    'my-scale' => \App\SerialDrivers\MyScaleDriver::class,
],

Manually Implementing the Interface

Implement Hamzi\PortFlow\Domain\Contracts\SerialDriver and, for type safety, also implement SerialEvent on any event classes you create:

use Hamzi\PortFlow\Domain\Contracts\SerialDriver;
use Hamzi\PortFlow\Domain\DTO\SerialFrame;

final class MyModbusDriver implements SerialDriver
{
    public function name(): string
    {
        return 'modbus';
    }

    public function configure(array $options = []): void
    {
        // Store $options for use in parse/encode
    }

    public function encodeOutbound(array|string $payload): string
    {
        // Serialize $payload to device-specific bytes
        return is_string($payload) ? $payload : json_encode($payload);
    }

    /** @return array<int, SerialFrame> */
    public function parseInbound(string $chunk, array $context = []): array
    {
        return [
            SerialFrame::now($this->name(), ['data' => $chunk], $context),
        ];
    }
}

PortFlow::registerDriver('modbus', MyModbusDriver::class);

Defining a Typed Domain Event

use Hamzi\PortFlow\Domain\Contracts\SerialEvent;

final class WeightReceived implements SerialEvent
{
    public function __construct(
        public readonly string $value,
        public readonly array  $context = [],
    ) {}
}

Events that do not implement SerialEvent will still be dispatched, but a Log::warning will be emitted to encourage type safety.

Web Serial Integration

portflow-serial.js provides a thin wrapper around the Web Serial API that POSTs incoming chunks to Laravel automatically.

<button id="connect">Connect Device</button>

<script src="{{ asset('vendor/portflow/portflow-serial.js') }}"></script>
<script>
  const bridge = new PortFlowBridge({
    ingestUrl: '{{ route("portflow.ingest") }}',
    driver:    'raw-json',
    baudRate:  115200,
    autoConnectOnLoad: true,
    filters: [{ usbVendorId: 6790, usbProductId: 29987 }],
    browserChunkEvent: 'esp32-browser-frame',
    livewireChunkEvent: 'esp32-livewire-frame',
    csrfToken: document.head.querySelector('meta[name="csrf-token"]').content,
  });

  document.getElementById('connect').addEventListener('click', () => bridge.connect());
</script>

Constructor options:

Option	Type	Default	Description
`baudRate`	`number`	`9600`	Serial baud rate
`autoConnectOnLoad`	`boolean`	`true`	Reconnect automatically after reload when the browser already trusts the port
`driver`	`string`	`'raw-json'`	PortFlow driver name
`ingestUrl`	`string`	`'/portflow/ingest'`	Backend endpoint
`csrfToken`	`string`	auto-detected	CSRF token for POST
`rememberBaudRate`	`boolean`	`true`	Persist the last selected baud rate in `localStorage`
`filters`	`array`	`[]`	Web Serial port filters used by `requestPort()`
`browserChunkEvent`	`string`	`'portflow-frame-received'`	Browser event name emitted for received chunks
`livewireChunkEvent`	`string`	`'portflow-frame-received'`	Livewire event name emitted for received chunks
`livewireStatusEvent`	`string`	`'portflow-status-updated'`	Livewire event name emitted for connection status
`livewireErrorEvent`	`string`	`'portflow-error'`	Livewire event name emitted for bridge errors
`autoReconnect`	`boolean`	`true`	Auto-reconnect on disconnect
`maxRetries`	`number`	`5`	Max reconnect attempts
`retryDelay`	`number`	`2000`	Base delay in ms (exponential back-off)

Window events:

// Fired on every status change (connect, disconnect, reconnect attempt)
window.addEventListener('portflow-status', (e) => {
  console.log('Connected:', e.detail.connected);
  console.log('Driver:', e.detail.driver);
  console.log('Frames received:', e.detail.frames);
  console.log('Retry count:', e.detail.retryCount);
});

// Fired for every raw chunk POSTed to the backend
window.addEventListener('portflow-frame-received', (e) => {
  console.log('Raw chunk:', e.detail.chunk);
});

// Fired on each reconnect attempt
window.addEventListener('portflow-reconnecting', (e) => {
  console.log(`Reconnect attempt ${e.detail.attempt} in ${e.detail.delay}ms`);
});

// Fired when max retries are exhausted
window.addEventListener('portflow-reconnect-failed', (e) => {
  console.error(`Failed after ${e.detail.retries} retries`);
});

// Fired immediately when the browser does not support Web Serial API
window.addEventListener('portflow-unsupported', (e) => {
  console.warn(e.detail.reason);
  console.info('Supported browsers:', e.detail.suggestedBrowsers);
});

Auto-Reconnect

When a serial connection drops unexpectedly, the bridge automatically attempts to reconnect using exponential back-off (2 s, 4 s, 8 s, …) up to maxRetries attempts. This is enabled by default and requires no configuration.

Backend Direct Serial Mode

Some devices are easier or safer to integrate from the backend (Linux service, kiosk daemon, headless station) rather than browser Web Serial. PortFlow includes an Artisan listener:

php artisan portflow:listen /dev/ttyUSB0 --driver=barcode-line --baud=115200

Windows example:

php artisan portflow:listen COM3 --driver=barcode-line --baud=115200

Advanced UART parameters:

php artisan portflow:listen /dev/ttyUSB1 \
  --driver=rfid-ascii \
  --baud=9600 \
  --parity=none \
  --data-bits=8 \
  --stop-bits=1 \
  --flow-control=none \
  --context='{"station":"gate-a"}'

Show incoming serial payloads in the console while still ingesting frames:

php artisan portflow:listen /dev/ttyUSB0 \
  --driver=raw-json \
  --baud=921600 \
  --show-data=1 \
  --show-data-format=json

Data preview options:

--show-data=1 enables payload preview logs.
--show-data-format=auto|raw|plain|json|hex|base64 controls rendering format.
--show-data-max=512 limits displayed bytes per chunk to keep logs readable.

Security and hardening notes:

Device path validation supports /dev/* on Linux/macOS and COMx / \\.\COMx on Windows.
Use portflow.backend.allowed_devices to allowlist exact/glob device paths.
Listener configures serial parameters with platform-native tooling (stty on POSIX, mode on Windows).
Ingest now validates decoded base64 chunk size against max_chunk_bytes.

config/portflow.php backend section:

'backend' => [
    'allowed_devices' => [
        '/dev/ttyUSB0',
        '/dev/ttyACM*',
        'COM*',
        '\\\\.\\COM*',
    ],
    'default_chunk_bytes' => 256,
    'default_read_sleep_us' => 20000,
],

To disable:

const bridge = new PortFlowBridge({ autoReconnect: false });

Alpine.js integration (built-in):

<div x-data="portflowConnector()" x-init="init()">
  <button @click="connect()" :disabled="connecting">
    <span x-text="connected ? 'Connected' : (connecting ? 'Connecting…' : 'Connect Device')"></span>
  </button>
  <span x-show="connected" x-text="'Frames: ' + frames"></span>
  <span x-show="retryCount > 0" x-text="'Reconnecting… attempt ' + retryCount"></span>
</div>

<script>
  window.portflowConfig = {
    ingestUrl: '{{ route("portflow.ingest") }}',
    driver:   'raw-json',
    baudRate:  115200,
  };
</script>

Browser Compatibility

The Web Serial API is only available in Chromium-based browsers (Chrome 89+ / Edge 89+). Firefox and Safari do not support it.

Check support in JavaScript:

if (!PortFlowBridge.isSupported()) {
  // Show a fallback UI, redirect, or degrade gracefully
  console.warn('Web Serial not available in this browser.');
}

Check support in Blade (no Alpine required):

{{-- Wraps any content; shows a warning banner in unsupported browsers --}}
<x-portflow::portflow-browser-check>
    <livewire:portflow-connector />
</x-portflow::portflow-browser-check>

The component renders a yellow warning banner with a "Download Chrome" link in Firefox/Safari, and leaves the content untouched in supported browsers.

Customise the message and hide the download link:

<x-portflow::portflow-browser-check
    message="Serial device features require Google Chrome or Microsoft Edge."
    :show-download-link="false"
>
    <livewire:portflow-connector />
</x-portflow::portflow-browser-check>

Browser	Web Serial	Status
Chrome 89+	✅	Supported
Edge 89+	✅	Supported
Firefox	❌	Not supported (flag-only, no stable release)
Safari / iOS	❌	Not supported
Opera (Chromium)	✅	Supported

Hardware → Events & Eloquent

The mappings config key lets you automatically route frames to Laravel events or Eloquent models without writing controller code.

// config/portflow.php
'mappings' => [
    // Fire ProductScanned when a raw-json frame has type = "barcode.scan"
    [
        'driver'              => 'raw-json',
        'payload_field'       => 'type',
        'equals'              => 'barcode.scan',
        'event'               => ProductScanned::class,
        'event_payload_field' => 'barcode',
    ],

    // Match every ESC/POS frame (no payload filter)
    [
        'driver' => 'escpos',
        'event'  => ProductScanned::class,
        'event_payload_field' => 'barcode',
    ],

    // Persist weight readings directly to an Eloquent model
    [
        'driver'    => 'rs232',
        'model'     => \App\Models\WeightReading::class,
        'field_map' => [
            'value' => 'weight',   // model column => payload key
            'unit'  => 'segments.1',
        ],
    ],
],

If a mapping's event or model throws an exception, it is caught and written to Log::error so one bad handler never breaks other mappings or the HTTP response.

Queue-Based Routing

For high-throughput or slow listeners, route frames asynchronously via the queue:

// config/portflow.php  (or .env)
'queue_routing' => env('PORTFLOW_QUEUE_ROUTING', false),

Or in .env:

PORTFLOW_QUEUE_ROUTING=true

When enabled, each SerialFrame is dispatched as a RouteSerialFrameJob (3 retries by default) on the configured queue connection. The HTTP response is returned immediately.

php artisan queue:work

Thermal Printing Engine

PortFlow ships a Blade-to-ESC/POS renderer so you can design receipts in familiar Blade syntax:

resources/views/receipts/order.blade.php

Order #{{ $order->id }}
Date: {{ $order->created_at->format('d/m/Y H:i') }}
------------------------------------------------
@foreach ($order->items as $item)
{{ str_pad($item->name, 38) }}{{ number_format($item->price, 2) }}
@endforeach
------------------------------------------------
TOTAL: {{ number_format($order->total, 2) }}

In a controller or job:

$bytes = PortFlow::print('receipts.order', ['order' => $order]);
// Send $bytes to the printer via Web Serial write() or a TCP socket

IoT Frame Buffering

IoTFrameBuffer is a standalone utility that accumulates streaming bytes and emits complete frames when a delimiter is found. Use it independently for any stream protocol:

use Hamzi\PortFlow\Domain\Services\IoTFrameBuffer;

$buffer = new IoTFrameBuffer(delimiter: "\n", maxBytes: 8192);

$frames = $buffer->push("partial-");  // → []
$frames = $buffer->push("data\n");    // → ["partial-data"]

// Flush any incomplete frame before closing the connection
$remainder = $buffer->flushRemainder();

Buffer Persistence Across Requests

IoT devices may split a JSON packet across multiple HTTP requests. Pass a session_id in the request context and the RawJsonDriver will automatically persist the buffer state in the Laravel cache between requests (5-minute TTL):

JavaScript (add session_id to the context):

const bridge = new PortFlowBridge({
  driver: 'raw-json',
  ingestUrl: '/portflow/ingest',
});
// PortFlowBridge sets context.source automatically.
// To enable persistence, pass session_id from the server:

Or POST directly from firmware:

{
  "driver":  "raw-json",
  "chunk":   "{\"sensor\":\"temp\",\"val",
  "context": { "session_id": "device-esp32-A4:CF:12" }
}

A subsequent request with the same session_id will complete and emit the frame:

{
  "driver":  "raw-json",
  "chunk":   "ue\":22.5}\n",
  "context": { "session_id": "device-esp32-A4:CF:12" }
}

The backend will emit one complete SerialFrame with { "sensor": "temp", "value": 22.5 }.

Requires a cache driver other than array in production (e.g., redis, database).

Blade & Livewire Components

Blade

{{-- Connection toggle button + port label --}}
<x-portflow::connector />

{{-- Real-time driver status badge --}}
<x-portflow::status />

{{-- Browser compatibility warning (no Alpine required) --}}
<x-portflow::portflow-browser-check>
    <livewire:portflow-connector />
</x-portflow::portflow-browser-check>

portflow-browser-check wraps any slot content and injects a styled warning banner when the browser does not support the Web Serial API. See the Browser Compatibility section for full options.

Livewire

<livewire:portflow-connector />
<livewire:portflow-status />

The PortFlowStatus component listens for the portflow-status-updated browser event dispatched by the JS bridge automatically.

Security

Protection	Detail
Rate limiting	`60` requests / minute per IP by default. Configurable via `portflow.ingest_rate_limit` or `PORTFLOW_RATE_LIMIT` env. Returns `429` when exceeded.
Chunk size limit	Inbound `chunk` field capped at `16 384` bytes (configurable). Returns `422` on violation.
CSRF	Ingest endpoint inherits the `web` middleware group (CSRF enforced). Switch to `['api']` if using token auth.
Event type safety	Events used in mappings should implement `SerialEvent`. A `Log::warning` is emitted for non-conforming classes.

Configuration Reference

// config/portflow.php

return [
    /*
    |--------------------------------------------------------------------------
    | Default Driver
    |--------------------------------------------------------------------------
    */
    'default_driver' => env('PORTFLOW_DEFAULT_DRIVER', 'raw-json'),

    /*
    |--------------------------------------------------------------------------
    | Ingest Endpoint
    |--------------------------------------------------------------------------
    */
    'ingest_path' => env('PORTFLOW_INGEST_PATH', '/portflow/ingest'),

    /*
    |--------------------------------------------------------------------------
    | Ingest Middleware
    |--------------------------------------------------------------------------
    | Do NOT add TrimStrings or ConvertEmptyStringsToNull — they corrupt
    | binary delimiters (\n, \r\n) in serial chunk data.
    */
    'ingest_middleware' => ['web'],

    /*
    |--------------------------------------------------------------------------
    | Security
    |--------------------------------------------------------------------------
    */
    'max_chunk_bytes'   => env('PORTFLOW_MAX_CHUNK_BYTES', 16384),
    'ingest_rate_limit' => env('PORTFLOW_RATE_LIMIT', 60),

    /*
    |--------------------------------------------------------------------------
    | Queue Routing
    |--------------------------------------------------------------------------
    | Set to true to dispatch SerialFrames via the queue instead of
    | processing them synchronously inside the HTTP request cycle.
    */
    'queue_routing' => env('PORTFLOW_QUEUE_ROUTING', false),

    /*
    |--------------------------------------------------------------------------
    | Drivers
    |--------------------------------------------------------------------------
    */
    'drivers' => [
        'raw-json' => \Hamzi\PortFlow\Infrastructure\Drivers\RawJsonDriver::class,
        'escpos'   => \Hamzi\PortFlow\Infrastructure\Drivers\EscPosDriver::class,
        'rs232'    => \Hamzi\PortFlow\Infrastructure\Drivers\Rs232Driver::class,
    ],

    /*
    |--------------------------------------------------------------------------
    | Driver Options
    |--------------------------------------------------------------------------
    */
    'driver_options' => [
        'raw-json' => [
            'delimiter' => "\n",
            'max_bytes' => 16384,
        ],
        'rs232' => [
            'delimiter' => "\n",
        ],
        'escpos' => [],
    ],

    /*
    |--------------------------------------------------------------------------
    | Mappings
    |--------------------------------------------------------------------------
    | Automatically route frames to Events or Eloquent models.
    | Supported keys per mapping:
    |   driver              — match only frames from this driver (optional)
    |   payload_field       — payload key to match on (optional)
    |   equals              — expected value of payload_field (optional)
    |   event               — fully-qualified event class to dispatch
    |   event_payload_field — payload key passed as first constructor arg
    |   model               — Eloquent model class to create
    |   field_map           — [ 'column' => 'payload_key' ]
    */
    'mappings' => [
        [
            'driver'              => 'raw-json',
            'payload_field'       => 'type',
            'equals'              => 'barcode.scan',
            'event'               => \Hamzi\PortFlow\Domain\Events\ProductScanned::class,
            'event_payload_field' => 'barcode',
        ],
        [
            'driver'              => 'escpos',
            'event'               => \Hamzi\PortFlow\Domain\Events\ProductScanned::class,
            'event_payload_field' => 'barcode',
        ],
    ],
];

Barcode Line Driver

Use case: common 1D/2D barcode scanners in serial mode (USB CDC, TTL UART, RS-232 adapters).

Most scanners send ASCII text followed by a line terminator (\r, \n, or both). barcode-line normalizes this into:

[
  'barcode' => '4006381333931',
  'raw' => '4006381333931\r',
  'length' => 13,
]

Recommended config:

'default_driver' => 'barcode-line',

'driver_options' => [
    'barcode-line' => [
        'delimiter' => "\n",
        'strip_prefix' => [],
        'strip_suffix' => ["\r", "\n", "\t"],
    ],
],

RFID ASCII Driver

Use case: 125kHz serial readers (for example ID-12/ID-20 family) that send framed ASCII.

A common frame format is:

STX (0x02)
ASCII tag bytes
CR + LF
ETX (0x03)

rfid-ascii parses this safely and emits payload like:

[
  'tag' => '7A005B0FF8D6',
  'raw' => '7A005B0FF8D6\r\n',
  'raw_hex' => '023741303035423046463844360D0A03',
  'format' => 'stx-etx-ascii',
]

Recommended config:

'driver_options' => [
    'rfid-ascii' => [
        'stx' => "\x02",
        'etx' => "\x03",
        'uppercase' => true,
    ],
],

Fingerprint Packet Driver

Use case: optical/capacitive UART fingerprint modules that speak binary packet protocol (common start code 0xEF01).

Unlike barcode/RFID text streams, fingerprint sensors are binary. PortFlow now supports binary chunks over web ingest using chunk_encoding: base64 automatically in the JS bridge.

fingerprint-packet validates checksums and emits parsed packet metadata:

[
  'packet_type' => 7,
  'packet_type_name' => 'ack',
  'address_hex' => 'FFFFFFFF',
  'data_hex' => '00',
  'checksum' => 11,
  'checksum_calculated' => 11,
  'checksum_valid' => true,
  'raw_hex' => 'EF01FFFFFFFF07000300000B',
]

Recommended config:

'driver_options' => [
    'fingerprint-packet' => [
        'start_code_hex' => 'EF01',
    ],
],

Device Patterns Supported Out-of-the-box

Device Type	Common Serial Pattern	Recommended Driver
Barcode scanners	ASCII + CR/LF terminator	`barcode-line`
RFID serial readers	`STX + TAG + CRLF + ETX`	`rfid-ascii`
Fingerprint sensors	Binary framed packets (`EF01 ... checksum`)	`fingerprint-packet`

Testing

composer test

Run with coverage:

composer test -- --coverage

Lint & style:

composer format              # fix in place
composer format -- --test    # check only (CI mode)

Static analysis:

composer analyse

Contributing

Contributions are welcome. Please:

Fork the repository and create a feature branch.
Write tests for all new behaviour.
Run composer format and composer analyse before submitting.
Open a Pull Request with a clear description of the change.

See CONTRIBUTING.md for full guidelines.

License

The MIT License. See LICENSE for details.

Portflow Laravel Package

PortFlow

Contents

What is PortFlow?

Architecture

Requirements

Installation

Quick Start

Available Drivers

RAW / JSON Driver

ESC/POS Driver

RS-232 Driver

Creating a Custom Driver

Using the Artisan Generator

Manually Implementing the Interface

Defining a Typed Domain Event

Web Serial Integration

Auto-Reconnect

Backend Direct Serial Mode

Browser Compatibility

Hardware → Events & Eloquent

Queue-Based Routing

Thermal Printing Engine

IoT Frame Buffering

Buffer Persistence Across Requests

Blade & Livewire Components

Blade

Livewire

Security

Configuration Reference

Barcode Line Driver

RFID ASCII Driver

Fingerprint Packet Driver

Device Patterns Supported Out-of-the-box

Testing

Contributing

License