Bloc Bootstrap Server

A QUIC-based bootstrap server for the Bloc blockchain network.
Its sole responsibility is peer discovery and coordination — not consensus, validation, or block storage.

This server allows nodes behind NAT/firewalls to:

• register themselves
• discover other peers
• prepare for UDP hole punching

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🚀 Features

• QUIC (UDP + TLS) based transport
• Secure peer registration
• Stateless protocol design (no blockchain state)
• JSON-based message envelope
• Graceful session handling
• Designed for NAT traversal workflows

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🧠 Architecture Overview

Node ──QUIC──▶ Bootstrap Server │ │ │ register │ │────────────────▶│ │ │ stores observed addr │ │ │◀──────── peer list / responses

• One QUIC session per peer
• One stream per request
• Server does not retain long-term state (yet)

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📡 Network Details

• Protocol: QUIC
• Transport: UDP
• Default Port: 4242
• TLS: Self-signed certificates (for now)

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📂 Project Structure

bootstrap/ ├── certificate/ │ ├── server.crt │ └── server.key ├── types/ │ ├── message.go │ └── peer.go ├── utils/ │ └── logger/ ├── main.go ├── peers.json └── README.md

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🧾 Message Protocol

All messages follow a common envelope:

{
  "version": 1,
  "header": {
    "application/json": "true"
  },
  "type": "register",
  "length": 17,
  "payload": { ... }
}

Type	Description
register	Register node with bootstrap
ping	Health check
punch	Hole punching coordination (WIP)

🧩 Example: Register Message

{
  "version": 1,
  "header": {
    "application/json": "true"
  },
  "type": "register",
  "length": 17,
  "payload": {
    "id": "node-123"
  }
}