Haukcode.RtpMidi

Haukcode.RtpMidi

RTP-MIDI (RFC 6295) for .NET — bidirectional MIDI over IP with full Apple MIDI session protocol support.

Key Features

• Apple MIDI session protocol (IN/OK/NO/BY/CK) — both initiator and responder roles
• Mandatory clock sync (CK0→CK1→CK2) — compatible with hardware bridges
• IObservable<T> streams for received MIDI and state changes (System.Reactive)
• Cross-platform: Windows, Linux ARM64, macOS — pure managed C#

Installation

dotnet add package Haukcode.RtpMidi

For mDNS peer discovery:

dotnet add package Haukcode.RtpMidi.Mdns

Quick Start

await using var session = new RtpMidiSession("My App");

session.MidiReceived.Subscribe(midiBytes =>
    Console.WriteLine($"MIDI: {BitConverter.ToString(midiBytes.ToArray())}"));

// Control port N; data port N+1 derived automatically
await session.ConnectAsync(new IPEndPoint(IPAddress.Parse("192.168.1.50"), 5004));

// Send LED feedback to hardware controller
await session.SendMidiAsync(new byte[] { 0xF0, 0x47, 0x7F, 0x30, 0x2C, 0x01, 0x00, 0xF7 });

Compatible Bridges

• macOS — Built-in Network MIDI (Audio MIDI Setup)
• Windows — rtpMIDI (free)
• Linux — raveloxmidi
• Hardware — iConnectivity mioXM and similar

Links

• GitHub
• RFC 6295