Originally posted August 21, 2019 to the Libra developer forum at
community.libra.org/t/async-await-in-libra-core/1566, which is no longer online. Recovered from the Wayback Machine and republished here. Referenced in this RustConf 2019 talk.
A couple of months ago I promised I would write up an experience report of Libra's use of Async/Await. Its taken me a bit longer than I had hoped to find time to write this up, but here we go!
| 11:07:12.167816 IP 127.0.0.1.8081 > 127.0.0.1.8080: UDP, length 37 | |
| 0x0000: 4502 0041 f467 0000 4011 0000 7f00 0001 E..A.g..@....... | |
| 0x0010: 7f00 0001 1f91 1f90 002d fe40 3de3 3c50 .........-.@=.<P | |
| 0x0020: a5ac 2080 94ec ba54 c1dd b788 6a1d c25a .......T....j..Z | |
| 0x0030: fbbe f7a9 ea3a 0b07 58f6 34a4 0a6c e5c3 .....:..X.4..l.. | |
| 0x0040: 08 . | |
| 11:07:12.167992 IP 127.0.0.1.8081 > 127.0.0.1.8080: UDP, length 184 | |
| 0x0000: 4502 00d4 a6ae 0000 4011 0000 7f00 0001 E.......@....... | |
| 0x0010: 7f00 0001 1f91 1f90 00c0 fed3 6ae3 3c50 ............j.<P | |
| 0x0020: a5ac 2080 94ab 36ea 0c84 9253 571c 15b0 ......6....SW... |
OUTDATED
This document will try to give a short tutorial of how to use the new style futures (0.3), how to use Async/Await, and how to use the compatibility layer to interoperate with old futures (0.1) and tokio.
When dealing with futures in this new world there are a lot of different parts and it can be difficult to keep things straight at times. As such here is a quick run down of the different parts and what they are.