Network

HTTP/3 QUIC Handshake Anatomy

Dissect the HTTP/3 over QUIC handshake byte-by-byte. Visualise the 1-RTT fresh handshake, session-ticket resumption, and 0-RTT early-data scenarios, with sequence diagrams, per-packet field layouts, the Retry packet, and a side-by-side comparison against TCP + TLS 1.3. Built for interview prep, protocol learning, and performance engineering.

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/http-3-quic-handshake-anatomy' \
  -H 'Content-Type: application/json' \
  -d '{"scenario":"h3-fresh","detail":"detailed","showComparison":true,"showRetry":true}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/http-3-quic-handshake-anatomy

Parameters

Name	Type	Required	Description
scenario	select	No	—
detail	select	No	—
showComparison	checkbox	No	—
showRetry	checkbox	No	—

Response format

HTML result

JSON

{
  "result": "<div>Processed HTML content</div>",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-http-3-quic-handshake-anatomy": {
      "name": "http-3-quic-handshake-anatomy",
      "description": "Dissect the HTTP/3 over QUIC handshake byte-by-byte. Visualise the 1-RTT fresh handshake, session-ticket resumption, and 0-RTT early-data scenarios, with sequence diagrams, per-packet field layouts, the Retry packet, and a side-by-side comparison against TCP + TLS 1.3. Built for interview prep, protocol learning, and performance engineering.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=http-3-quic-handshake-anatomy",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "http-3-quic-handshake-anatomy",
    "arguments": {
  "scenario": "h3-fresh",
  "detail": "detailed",
  "showComparison": true,
  "showRetry": true
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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HTTP/3 QUIC Handshake Anatomy

html· HTML resultOpen tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/http-3-quic-handshake-anatomy' \ -H 'Content-Type: application/json' \ -d '{"scenario":"h3-fresh","detail":"detailed","showComparison":true,"showRetry":true}'

Name

Type

Required

Description

scenario

select

—

detail

select

—

showComparison

checkbox

—

showRetry

checkbox

—

{ "mcpServers": { "elysiatools-http-3-quic-handshake-anatomy": { "name": "http-3-quic-handshake-anatomy", "description": "Dissect the HTTP/3 over QUIC handshake byte-by-byte. Visualise the 1-RTT fresh handshake, session-ticket resumption, and 0-RTT early-data scenarios, with sequence diagrams, per-packet field layouts, the Retry packet, and a side-by-side comparison against TCP + TLS 1.3. Built for interview prep, protocol learning, and performance engineering.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=http-3-quic-handshake-anatomy", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "http-3-quic-handshake-anatomy", "arguments": { "scenario": "h3-fresh", "detail": "detailed", "showComparison": true, "showRetry": true } } }