Getting Started with QWK.NET

This guide provides a minimal first-success path for using QWK.NET to read and process QWK packets. For detailed API reference and advanced usage, see the links at the end of this page.

Prerequisites

To verify your .NET version:

dotnet --version

This should show version 10.x.x or later.

Installation

Install the QwkNet package from NuGet:

dotnet add package QwkNet

Or search for QwkNet in the NuGet Package Manager in Visual Studio.

The package is available at nuget.org/packages/QwkNet.

Minimal Workflow

The typical workflow follows: Open → Inspect → Validate → Access optional files.

Here’s a minimal example that opens a QWK packet and displays basic information:

using QwkNet;

// Open a QWK packet from a file path
using QwkPacket packet = QwkPacket.Open("DEMO1.QWK");

// Inspect control data (BBS information)
Console.WriteLine($"BBS Name: {packet.Control.BbsName}");
Console.WriteLine($"BBS ID: {packet.Control.BbsId}");
Console.WriteLine($"Created: {packet.Control.CreatedAt}");

// Enumerate messages
foreach (Message message in packet.Messages)
{
    Console.WriteLine($"{message.From} → {message.To}: {message.Subject}");
}

// Check validation status
ValidationReport report = packet.ValidationReport;
if (!report.IsValid)
{
    Console.WriteLine($"Found {report.Errors.Count} errors, {report.Warnings.Count} warnings");
}

Opening Packets from Different Sources

QWK.NET supports opening packets from file paths, streams, or memory:

using QwkNet;

// From file path (most common)
using QwkPacket packet1 = QwkPacket.Open("DEMO1.QWK");

// From stream
using var stream = File.OpenRead("DEMO1.QWK");
using QwkPacket packet2 = QwkPacket.Open(stream);

// From byte array
byte[] data = File.ReadAllBytes("DEMO1.QWK");
using QwkPacket packet3 = QwkPacket.Open(data);

Validation Modes

By default, QWK.NET uses Lenient mode, which logs warnings but continues parsing. This is recommended for most scenarios as it handles real-world format variations gracefully.

using QwkNet;
using QwkNet.Validation;

// Lenient mode (default) - recommended for most scenarios
using QwkPacket packet = QwkPacket.Open("DEMO1.QWK", ValidationMode.Lenient);

// Strict mode - throws exceptions on any specification violation
using QwkPacket strictPacket = QwkPacket.Open("DEMO1.QWK", ValidationMode.Strict);

// Salvage mode - best-effort recovery from damaged packets
using QwkPacket salvagePacket = QwkPacket.Open("damaged.qwk", ValidationMode.Salvage);

Accessing Optional Files

QWK packets may contain optional files like WELCOME, NEWS, or GOODBYE:

using QwkNet;

using QwkPacket packet = QwkPacket.Open("DEMO1.QWK");

// Check if an optional file exists
if (packet.OptionalFiles.HasFile("WELCOME"))
{
    // Read as text
    string welcome = packet.OptionalFiles.GetText("WELCOME");
    Console.WriteLine(welcome);
}

Next Steps

Now that you’ve completed the minimal workflow, explore these resources:

Common Tasks

Reading Message Bodies

foreach (Message message in packet.Messages)
{
    MessageBody body = message.Body;
    
    // Access decoded text lines
    foreach (string line in body.Lines)
    {
        Console.WriteLine(line);
    }
}

Checking Message Status

foreach (Message message in packet.Messages)
{
    if (message.IsPrivate)
    {
        Console.WriteLine("Private message");
    }
    
    if (message.IsRead)
    {
        Console.WriteLine("Already read");
    }
}

Accessing QWKE Extensions

foreach (Message message in packet.Messages)
{
    // Check for QWKE kludges (extended headers)
    if (message.Kludges.Count > 0)
    {
        foreach (var kludge in message.Kludges)
        {
            Console.WriteLine($"Kludge: {kludge.Key} = {kludge.Value}");
        }
    }
}

Further Reading