Firebird Wire Protocol Carlos Guzman Alvarez, Mark Rotteveel Version 0.15, 26 December 2021 Table of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.6.2. Prepare with message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.1.1. Deviations for protocol version 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Message Handling with Boolean Algebra Ben Deane / CppCon / 2024-09-16 1Alternative Title "The Unreasonable Effectiveness of Boolean Algebra in Software Design, Showing the Particular Application of of a Message Handling Library, with an Excursion into the Roots of Programming" 2Frontmatter No AI/LLM was used in the creation of this talk. Code is simplified for slides; may have some errors in this talk is about The workings of a message-handling library. How messages and the fields in them are specified. Efficiently identifying (with matchers) a message coming off the wire. The role of Boolean

Serge Klochkov (Integrations Team) 31 October 2023 Agenda Motivation and Context 01 MySQL Wire Protocol Compatibility 02 MySQL SQL Dialect Compatibility 03 2 Motivation 3 ClickHouse and Other Databases not like that. MySQL user’s password has to be encrypted with Double SHA1 What does “MySQL Wire Protocol” mean? 6 ● TCP Connection ● MySQL authentication support ● Incoming command packets handler Result set protocols - text and binary * https://dev.mysql.com/doc/dev/mysql-server/latest/PAGE_PROTOCOL.html How it started … 7 What is “command \x16”? ? QuickSight Tableau Online How it started

We need a system Orchestrator to implement the robot behaviorRobot Behaviors This Coordinator or Task Planner is also the highest level of abstraction of our system, where we focus on WHAT the robot (*value) * 2; return NodeStatus::SUCCESS; } else { std::cout << "missing [message]: ", value.error() << "\n"; return NodeStatus::FAILURE; } } }; ● Ports are an message="{A}"/> // prints "42" message="{B}"/> // prints "45.14" message="{msg}"/> // prints "hello world"

used when we created them.” - Albert EinsteinSo what is there to Rethink?Rethinking: Task Queues Problem #1 - Task Queues Do Not Scale Well: ● Contention: ○ Even the most meticulously designed lock-free problems: ○ Task starvation ○ Load balancing ○ Forfeits strict FIFO behaviour ○ Increases memory footprint (or requires allocations) ○ Terrible task selection “fairness” Task Thread Thread Thread Task Task Task Task Task Task Task Task Back Front Task Queue Execute Task() Thread Thread PoolRethinking: Task Queues Problem #2 - No Inherent Support For Prioritization: ● Priority queues address this but

in a top-down task graph What is Task Graph-based Programming System (TGPS) Code 4• TGPS encapsulates function calls and their dependencies in a top-down task graph What is Task Graph-based Programming top-down task graph What is Task Graph-based Programming System (TGPS) Code A B C D B A C D 6• TGPS encapsulates function calls and their dependencies in a top-down task graph What is Task Graph-based sched; 2 task_a = sched.emplace([](&){ 3 // Code block A; 4 }); 5 task_b = sched.emplace([](&){ 6 // Code block B; 7 }); 8 task_c = sched.emplace([](&){ 9 // Code block C; 10 }); 11 task_d = sched

import asyncio import websockets async def echo(websocket, path): async for message in websocket: await websocket.send(message) start_server = websockets.serve(echo, "localhost", 8765) asyncio.get_event_loop() confidentiality and also reliability because they reduce the risk of interference by bad proxies. The WSS protocol is to WS what HTTPS is to HTTP: the connection is encrypted with Transport Layer Security (TLS) {name}!" await websocket.send(greeting) print(f"> {greeting}") ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER) localhost_pem = pathlib.Path(__file__).with_name("localhost.pem") ssl_context.load_

import asyncio import websockets async def echo(websocket, path): async for message in websocket: await websocket.send(message) asyncio.get_event_loop().run_until_complete( websockets.serve(echo, 'localhost' confidentiality and also reliability because they reduce the risk of interference by bad proxies. The WSS protocol is to WS what HTTPS is to HTTP: the connection is encrypted with TLS. WSS requires TLS certificates {name}!" await websocket.send(greeting) print(f"> {greeting}") ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER) ssl_context.load_cert_chain( pathlib.Path(__file__).with_name('localhost.pem')) start_server

import asyncio import websockets async def echo(websocket, path): async for message in websocket: await websocket.send(message) asyncio.get_event_loop().run_until_complete( websockets.serve(echo, 'localhost' confidentiality and also reliability because they reduce the risk of interference by bad proxies. The WSS protocol is to WS what HTTPS is to HTTP: the connection is encrypted with TLS. WSS requires TLS certificates {name}!" await websocket.send(greeting) print(f"> {greeting}") ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER) ssl_context.load_cert_chain( pathlib.Path(__file__).with_name('localhost.pem')) start_server

import asyncio import websockets async def echo(websocket, path): async for message in websocket: await websocket.send(message) asyncio.get_event_loop().run_until_complete( websockets.serve(echo, 'localhost' getElementsByTagName('ul')[0], message = document.createElement('li'), content = document.createTextNode(event.data); message.appendChild(content); messages.appendChild(message); }; document.body.appendChild(messages); consumer coroutine: async def consumer_handler(websocket, path): async for message in websocket: await consumer(message) 1.1. Getting started 5 websockets Documentation, Release 4.0 Iteration terminates