refactor(lib): export the ConnectionType parse error and document what hosts can still match

soulseek-rs-lib/README.md

@@ -115,6 +115,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 }
 ```
 
-`ServerMessage` and `ClientOperation` are `#[non_exhaustive]`: every protocol
-message the client learns to handle adds a variant, so match them with a
-wildcard arm.
+`ClientOperation` is `#[non_exhaustive]`: every protocol message the client
+learns to handle adds a variant, so match it with a wildcard arm. `SharedFile`
+is too, so build it with the `..` syntax rather than listing every field.

soulseek-rs-lib/src/actor/peer_actor.rs

@@ -21,9 +21,7 @@ use std::sync::mpsc::{Receiver, Sender};
 use std::sync::{Arc, RwLock};
 use std::time::{Duration, Instant};
 
-/// Marked non-exhaustive: each peer message the client learns adds a variant.
 #[derive(Debug, Clone)]
-#[non_exhaustive]
 pub enum PeerMessage {
     SendMessage(Message),
     FileSearchResult(SearchResult),

soulseek-rs-lib/src/lib.rs

@@ -34,7 +34,7 @@ pub use actor::server_actor::{PeerAddress, UserMessage};
 pub use client::{Client, ClientSettings};
 pub use error::{Result, SoulseekRs};
 pub use message::peer::{SharedDirectory, SharedFileEntry};
-pub use peer::ConnectionType;
+pub use peer::{ConnectionType, ParseConnectionTypeError};
 pub use types::{
     ClientVersion, DownloadStatus, File, RoomEvent, RoomInfo, Search,
     SearchResult, SessionLoss, Transfer, UploadInfo, UploadStatus, UserInfo,