adding flag to show connect device as group

connect/src/config.rs

@@ -4,6 +4,7 @@ use crate::core::config::DeviceType;
 pub struct ConnectConfig {
     pub name: String,
     pub device_type: DeviceType,
+    pub is_group: bool,
     pub initial_volume: Option<u16>,
     pub has_volume_ctrl: bool,
 }
@@ -13,6 +14,7 @@ impl Default for ConnectConfig {
         ConnectConfig {
             name: "Librespot".to_string(),
             device_type: DeviceType::default(),
+            is_group: false,
             initial_volume: Some(50),
             has_volume_ctrl: true,
         }

discovery/examples/discovery_group.rs

@@ -0,0 +1,22 @@
+use futures::StreamExt;
+use librespot_core::SessionConfig;
+use librespot_discovery::DeviceType;
+use sha1::{Digest, Sha1};
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() {
+    let name = "Librespot Group";
+    let device_id = hex::encode(Sha1::digest(name.as_bytes()));
+
+    let mut server =
+        librespot_discovery::Discovery::builder(device_id, SessionConfig::default().client_id)
+            .name(name)
+            .device_type(DeviceType::Speaker)
+            .is_group(true)
+            .launch()
+            .unwrap();
+
+    while let Some(x) = server.next().await {
+        println!("Received {:?}", x);
+    }
+}

discovery/src/lib.rs

@@ -84,6 +84,7 @@ impl Builder {
             server_config: server::Config {
                 name: "Librespot".into(),
                 device_type: DeviceType::default(),
+                is_group: false,
                 device_id: device_id.into(),
                 client_id: client_id.into(),
             },
@@ -104,6 +105,12 @@ impl Builder {
         self
     }
 
+    /// Sets whether the device is a group. This affects the icon in Spotify clients. Default is `false`.
+    pub fn is_group(mut self, is_group: bool) -> Self {
+        self.server_config.is_group = is_group;
+        self
+    }
+
     /// Set the ip addresses on which it should listen to incoming connections. The default is all interfaces.
     pub fn zeroconf_ip(mut self, zeroconf_ip: Vec<std::net::IpAddr>) -> Self {
         self.zeroconf_ip = zeroconf_ip;

discovery/src/server.rs

@@ -39,6 +39,7 @@ pub struct Config {
     pub name: Cow<'static, str>,
     pub device_type: DeviceType,
     pub device_id: String,
+    pub is_group: bool,
     pub client_id: String,
 }
 
@@ -70,6 +71,12 @@ impl RequestHandler {
         if let Some(username) = &self.username {
             active_user = username.to_string();
         }
+        // options based on zeroconf guide, search for `groupStatus` on page
+        let group_status = if self.config.is_group {
+            "GROUP"
+        } else {
+            "NONE"
+        };
 
         // See: https://developer.spotify.com/documentation/commercial-hardware/implementation/guides/zeroconf/
         let body = json!({
@@ -87,7 +94,8 @@ impl RequestHandler {
             "modelDisplayName": "librespot",
             "libraryVersion": crate::core::version::SEMVER,
             "resolverVersion": "1",
-            "groupStatus": "NONE",
+            // valid values are "GROUP" and "NONE"
+            "groupStatus": group_status,
             // valid value documented & seen in the wild: "accesstoken"
             // Using it will cause clients to fail to connect.
             "tokenType": "default",

src/main.rs

@@ -203,6 +203,7 @@ fn get_setup() -> Setup {
     const CACHE_SIZE_LIMIT: &str = "cache-size-limit";
     const DEVICE: &str = "device";
     const DEVICE_TYPE: &str = "device-type";
+    const DEVICE_IS_GROUP: &str = "group";
     const DISABLE_AUDIO_CACHE: &str = "disable-audio-cache";
     const DISABLE_CREDENTIAL_CACHE: &str = "disable-credential-cache";
     const DISABLE_DISCOVERY: &str = "disable-discovery";
@@ -409,6 +410,10 @@ fn get_setup() -> Setup {
         DEVICE_TYPE,
         "Displayed device type. Defaults to speaker.",
         "TYPE",
+    ).optflag(
+        "",
+        DEVICE_IS_GROUP,
+        "Whether the device represents a group. Defaults to false.",
     )
     .optopt(
         TEMP_DIR_SHORT,
@@ -1312,11 +1317,14 @@ fn get_setup() -> Setup {
             })
             .unwrap_or_default();
 
+        let is_group = opt_present(DEVICE_IS_GROUP);
+
         let has_volume_ctrl = !matches!(mixer_config.volume_ctrl, VolumeCtrl::Fixed);
 
         ConnectConfig {
             name,
             device_type,
+            is_group,
             initial_volume,
             has_volume_ctrl,
         }
@@ -1685,6 +1693,7 @@ async fn main() {
             match librespot::discovery::Discovery::builder(device_id, client_id)
                 .name(setup.connect_config.name.clone())
                 .device_type(setup.connect_config.device_type)
+                .is_group(setup.connect_config.is_group)
                 .port(setup.zeroconf_port)
                 .zeroconf_ip(setup.zeroconf_ip.clone())
                 .launch()