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Driver: Automate (re)connection logic (#81)

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This PR adds several enhancements to Driver connection logic:
* Driver (re)connection attempts now have a default timeout of around 10s.
* The driver will now attempt to retry full connection attempts using a user-provided strategy: currently, this defaults to 5 attempts under an exponential backoff strategy.
* The driver will now fire `DriverDisconnect` events at the end of any session -- this unifies (re)connection failure events with session expiry as seen in #76, which should provide users with enough detail to know *which* voice channel to reconnect to. Users still need to be careful to read the session/channel IDs to ensure that they aren't overwriting another join.

This has been tested using `cargo make ready`, and by setting low timeouts to force failures in the voice receive example (with some additional error handlers).

Closes #68.
This commit is contained in:
Kyle Simpson
2021-06-23 17:11:14 +01:00
parent 8381f8c461
commit 210e3ae584
17 changed files with 672 additions and 90 deletions
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src/info.rs
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@@ -104,7 +104,7 @@ impl ConnectionProgress {
/// Parameters and information needed to start communicating with Discord's voice servers, either
/// with the Songbird driver, lavalink, or other system.
#[derive(Clone)]
#[derive(Clone, Eq, Hash, PartialEq)]
pub struct ConnectionInfo {
/// ID of the voice channel being joined, if it is known.
///