community: the drawer asks a peer for its card and the server for interests, and discover gets the similar-users shelf

crates/soulseek-proto/src/peer.rs

@@ -125,6 +125,11 @@ pub fn browse_request() -> Vec<u8> {
     Writer::new().finish_u32(code::BROWSE_REQUEST)
 }
 
+/// Ask a peer for their user-info card (code 15; answered with code 16).
+pub fn user_info_request() -> Vec<u8> {
+    Writer::new().finish_u32(code::USER_INFO_REQUEST)
+}
+
 /// Legacy enqueue message; some clients expect it before TransferRequest.
 pub fn queue_download(filename: &str) -> Vec<u8> {
     Writer::new()
@@ -247,6 +252,15 @@ pub enum PeerEvent {
     UploadFailed {
         filename: String,
     },
+    /// A peer's user-info card, the answer to our user_info_request.
+    UserInfoResponse {
+        description: String,
+        /// Raw bytes as sent — hostile input until decoded under limits.
+        picture: Option<Vec<u8>>,
+        total_uploads: u32,
+        queue_size: u32,
+        has_free_slot: bool,
+    },
     // Requests other peers make of us (M5 responder):
     BrowseRequest,
     UserInfoRequest,
@@ -320,6 +334,17 @@ pub fn decode(code: u32, payload: Bytes) -> Result<PeerEvent> {
         code::UPLOAD_FAILED => PeerEvent::UploadFailed {
             filename: r.string()?,
         },
+        code::USER_INFO_RESPONSE => {
+            let description = r.string()?;
+            let picture = if r.bool()? { Some(r.bytes()?.to_vec()) } else { None };
+            PeerEvent::UserInfoResponse {
+                description,
+                picture,
+                total_uploads: r.u32()?,
+                queue_size: r.u32()?,
+                has_free_slot: r.bool().unwrap_or(false),
+            }
+        }
         code::BROWSE_REQUEST => PeerEvent::BrowseRequest,
         code::USER_INFO_REQUEST => PeerEvent::UserInfoRequest,
         code::FOLDER_CONTENTS_REQUEST => PeerEvent::FolderContentsRequest {