feat: add 'Range' header support

Should allow for seeking.

rave/Cargo.toml

@@ -23,7 +23,7 @@ quick-xml = { version = "0.31", features = ["serialize"] }
 serde = { workspace = true }
 serde_json = "1.0"
 time = { workspace = true, features = ["local-offset"] }
-tokio = { version = "1.34", features = ["full"] }
+tokio = { version = "1", features = ["full"] }
 tracing = { workspace = true }
 tracing-subscriber = { version = "0.3", features = [
     "env-filter",
@@ -37,11 +37,12 @@ url-escape = "0.1"
 sea-orm = { workspace = true }
 entities = { workspace = true }
 migration = { workspace = true }
-once_cell = { version = "1.18", features = ["parking_lot"] }
+once_cell = { version = "1", features = ["parking_lot"] }
 futures = "0.3"
 audiotags = "0.4"
 tracing-appender = "0.2"
 blake3 = "1.5"
 image = "0.24"
 nate = "0.4"
-rand = "0.8.5"
+rand = "0.8"
+http-range = "0.1"

rave/src/rest/mod.rs

@@ -1,4 +1,7 @@
-use poem::{http::StatusCode, Endpoint, EndpointExt, Response, Route};
+use poem::{
+    http::{header, StatusCode},
+    Endpoint, EndpointExt, Response, Route,
+};
 
 // rest/getLicense
 mod get_license;
@@ -43,8 +46,16 @@ pub fn build() -> Box<dyn Endpoint<Output = poem::Response>> {
         .at("/getAlbumList2.view", get_album_list::get_album_list)
         .at("/getAlbum", get_album::get_album)
         .at("/getAlbum.view", get_album::get_album)
-        .at("/stream", stream::stream)
-        .at("/stream.view", stream::stream)
+        .at(
+            "/stream",
+            stream::stream
+                .with(poem::middleware::SetHeader::new().appending(header::ACCEPT_RANGES, "bytes")),
+        )
+        .at(
+            "/stream.view",
+            stream::stream
+                .with(poem::middleware::SetHeader::new().appending(header::ACCEPT_RANGES, "bytes")),
+        )
         .at("/startScan", start_scan::start_scan)
         .at("/startScan.view", start_scan::start_scan)
         .at("/getScanStatus", get_scan_status::get_scan_status)

rave/src/rest/stream.rs

@@ -1,7 +1,8 @@
 use crate::{json_or_xml, utils::db::DbTxn};
 use entities::prelude::Track;
+use http_range::HttpRange;
 use poem::{
-    http::StatusCode,
+    http::{header, HeaderMap, StatusCode},
     web::{Data, Query},
     Response,
 };
@@ -20,6 +21,7 @@ use crate::{
 pub async fn stream(
     Data(txn): Data<&DbTxn>,
     auth: Authentication,
+    headers: &HeaderMap,
     Query(params): Query<StreamParams>,
 ) -> Response {
     let u = utils::verify_user(txn.clone(), &auth).await;
@@ -81,11 +83,62 @@ pub async fn stream(
         }
     };
 
+    if let Some(range) = headers.get(header::RANGE) {
+        let range = match range.to_str() {
+            Ok(range) => range,
+            Err(e) => {
+                error!(
+                    error = &e as &dyn std::error::Error,
+                    "Error parsing range header: {e}"
+                );
+                return json_or_xml!(auth, SubsonicResponse::new_error(Error::Generic(None)));
+            }
+        };
+
+        let range = match HttpRange::parse(range, song.len() as u64) {
+            Ok(range) => range,
+            Err(e) => {
+                error!("Error parsing range header: {e:?}");
+                return json_or_xml!(auth, SubsonicResponse::new_error(Error::Generic(None)));
+            }
+        };
+
+        if range.len() > 1 {
+            return json_or_xml!(
+                auth,
+                SubsonicResponse::new_error(Error::Generic(Some(
+                    "Multiple ranges are not supported".to_string()
+                )))
+            );
+        }
+
+        if let Some(range) = range.first() {
+            let body = song[range.start as usize..(range.start + range.length) as usize].to_vec();
+
+            poem::Response::builder()
+                .status(StatusCode::PARTIAL_CONTENT)
+                .header(header::CONTENT_TYPE, track.content_type)
+                .header(
+                    header::CONTENT_RANGE,
+                    format!("bytes {}-{}/{}", range.start, range.length, song.len()),
+                )
+                .header(header::CONTENT_LENGTH, body.len())
+                .body(body)
+        } else {
             poem::Response::builder()
                 .status(StatusCode::OK)
-        .header("Content-Type", "audio/mpeg")
+                .header(header::CONTENT_TYPE, track.content_type)
+                .header(header::CONTENT_LENGTH, song.len())
                 .body(song)
         }
+    } else {
+        poem::Response::builder()
+            .status(StatusCode::OK)
+            .header(header::CONTENT_TYPE, track.content_type)
+            .header(header::CONTENT_LENGTH, song.len())
+            .body(song)
+    }
+}
 
 #[derive(Debug, Clone, Deserialize, Default)]
 pub struct StreamParams {