Deploying the Networking TS Robert Leahy Lead Software Engineer rleahy@rleahy.ca Opening DataConn socket on 0.0.0.0:11653... Started (send SIGINT or SIGTERM to exit) 2021-10-06T04:01:26.490694105Z async_write_state& state, WaitableTimer& timer, Events events, CompletionToken&& token); 16 Events Complex asynchronous operations contain many parts Encapsulating increasing complexity creates a shared framework Shared CompletionToken> decltype(auto) async_wait(CompletionToken&& token); }; 25 Injecting Asynchronous Operations If an asynchronous operation completes immediately (that is, within the thread of execution calling

Asynchronous programming in .NET by Gerardo Lijs Twitter @GerardoLijs C# MeetUp Barcelona April 2019 Content What is Asynchronous Programming CPU-bound vs IO-bound Obsolete patterns Tasks and general you will not need other methods of TaskFactory class @GerardoLijs Synchronous method Asynchronous method IO-bound operations • Hard drive • Network • Database • API calls • Hardware read/write the time you will need asynchronous to deal with IO-bound operations and the times you will use CPU-bound operations you will probably use a library that provides asynchronous methods for you to interact

microbenchmarks and a real-world application • Conclusion 26Synchronous/Asynchronous Mechanisms Boil the water Synchronous Asynchronous Wait Polling Callback Check Do your things Multitasking! 27Taro’s motivation behind Taro • We have presented the Taro C++ programming model - Synchronous and Asynchronous mechanisms • We have presented the Taro coroutine-aware scheduling algorithm • We have presented

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 5.4 Asynchronous networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 5.5 Coroutines 229 i ii Tornado Documentation, Release 5.1.1 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can listen(8888) tornado.ioloop.IOLoop.current().start() This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 5.1.1 6 Chapter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 6.4 Asynchronous networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Index 255 i ii Tornado Documentation, Release 6.4 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can wait() if __name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.4 6 Chapter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 6.4 Asynchronous networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Index 255 i ii Tornado Documentation, Release 6.4 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can wait() if __name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.4 6 Chapter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 6.4 Asynchronous networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 Index 255 i ii Tornado Documentation, Release 6.4 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can wait() if __name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.4 6 Chapter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 6.4 Asynchronous networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.5 251 i ii Tornado Documentation, Release 6.3.3 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can wait() if __name__ == "__main__": asyncio.run(main()) This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 6.3.3 6 Chapter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 4.4 Asynchronous networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 4.5 Coroutines 209 i ii Tornado Documentation, Release 4.5.3 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can listen(8888) tornado.ioloop.IOLoop.current().start() This example does not use any of Tornado’s asynchronous features; for that see this simple chat room. 5 Tornado Documentation, Release 4.5.3 6 Chapter

T C H Robert Leahy - rleahy@rleahy.caNetworking TS & Asio ISO C++ Networking is blocked on Executors (P0443) Target for Networking is currently C++23 (P0592) Used standalone Asio (1.18.0) to prepare P0443-friendly extensions to the Networking TS shipping in “standalone” Asio & Boost.Asio (P0958) 2async_wait_then_write 3Composed Asynchronous Operations Composing asynchronous operations enables the layered composed asynchronous operations from concrete types Customization points defer decisions to the consumer rather than the author making them arbitrarily 4async_wait_then_write 5Asynchronous Operations