Put apresolve behind feature flag

Cargo.lock

@@ -1450,6 +1450,7 @@ dependencies = [
  "base64",
  "byteorder",
  "bytes",
+ "cfg-if 1.0.0",
  "env_logger",
  "error-chain",
  "futures",
@@ -1473,7 +1474,6 @@ dependencies = [
  "shannon",
  "tokio",
  "tokio-util",
- "tower-service",
  "url 1.7.2",
  "vergen",
 ]

Cargo.toml

@@ -61,6 +61,9 @@ sha-1 = "0.8"
 hex = "0.4"
 
 [features]
+apresolve = ["librespot-core/apresolve"]
+apresolve-http2 = ["librespot-core/apresolve-http2"]
+
 alsa-backend = ["librespot-playback/alsa-backend"]
 portaudio-backend = ["librespot-playback/portaudio-backend"]
 pulseaudio-backend = ["librespot-playback/pulseaudio-backend"]
@@ -75,7 +78,7 @@ with-vorbis = ["librespot-audio/with-vorbis"]
 
 # with-dns-sd = ["librespot-connect/with-dns-sd"]
 
-default = ["librespot-playback/rodio-backend"]
+default = ["rodio-backend", "apresolve"]
 
 [package.metadata.deb]
 maintainer = "librespot-org"

core/Cargo.toml

@@ -17,11 +17,12 @@ aes = "0.6"
 base64 = "0.13"
 byteorder = "1.4"
 bytes = "1.0"
+cfg-if = "1"
 error-chain = { version = "0.12", default-features = false }
 futures = { version = "0.3", features = ["bilock", "unstable"] }
 hmac = "0.10"
 httparse = "1.3"
-hyper = { version = "0.14", features = ["client", "tcp", "http1", "http2"] }
+hyper = { version = "0.14", optional = true, features = ["client", "tcp", "http1"] }
 log = "0.4"
 num-bigint = "0.3"
 num-integer = "0.1"
@@ -38,7 +39,6 @@ sha-1 = "0.9"
 shannon = "0.2.0"
 tokio = { version = "1.0", features = ["io-util", "rt-multi-thread"] }
 tokio-util = { version = "0.6", features = ["codec"] }
-tower-service = "0.3"
 url = "1.7"
 
 [build-dependencies]
@@ -47,4 +47,8 @@ vergen = "3.0.4"
 
 [dev-dependencies]
 env_logger = "*"
-tokio = {version = "1.0", features = ["macros"] }
+tokio = {version = "1.0", features = ["macros"] }
+
+[features]
+apresolve = ["hyper"]
+apresolve-http2 = ["apresolve", "hyper/http2"]

core/src/apresolve.rs

@@ -1,61 +1,72 @@
 const AP_FALLBACK: &'static str = "ap.spotify.com:443";
-const APRESOLVE_ENDPOINT: &'static str = "http://apresolve.spotify.com:80";
 
-use hyper::{Body, Client, Method, Request, Uri};
-use std::error::Error;
 use url::Url;
 
-use crate::proxytunnel::ProxyTunnel;
+cfg_if! {
+    if #[cfg(feature = "apresolve")] {
+        const APRESOLVE_ENDPOINT: &'static str = "http://apresolve.spotify.com:80";
 
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub struct APResolveData {
-    ap_list: Vec<String>,
-}
+        use std::error::Error;
 
-async fn apresolve(proxy: &Option<Url>, ap_port: &Option<u16>) -> Result<String, Box<dyn Error>> {
-    let port = ap_port.unwrap_or(443);
+        use hyper::{Body, Client, Method, Request, Uri};
 
-    let req = Request::builder()
-        .method(Method::GET)
-        .uri(
-            APRESOLVE_ENDPOINT
-                .parse::<Uri>()
-                .expect("invalid AP resolve URL"),
-        )
-        .body(Body::empty())?;
+        use crate::proxytunnel::ProxyTunnel;
 
-    let response = if let Some(url) = proxy {
-        Client::builder()
-            .build(ProxyTunnel::new(url)?)
-            .request(req)
-            .await?
-    } else {
-        Client::new().request(req).await?
-    };
+        #[derive(Clone, Debug, Serialize, Deserialize)]
+        pub struct APResolveData {
+            ap_list: Vec<String>,
+        }
 
-    let body = hyper::body::to_bytes(response.into_body()).await?;
-    let data: APResolveData = serde_json::from_slice(body.as_ref())?;
+        async fn apresolve(proxy: &Option<Url>, ap_port: &Option<u16>) -> Result<String, Box<dyn Error>> {
+            let port = ap_port.unwrap_or(443);
 
-    let ap = if ap_port.is_some() || proxy.is_some() {
-        data.ap_list.into_iter().find_map(|ap| {
-            if ap.parse::<Uri>().ok()?.port()? == port {
-                Some(ap)
+            let req = Request::builder()
+                .method(Method::GET)
+                .uri(
+                    APRESOLVE_ENDPOINT
+                        .parse::<Uri>()
+                        .expect("invalid AP resolve URL"),
+                )
+                .body(Body::empty())?;
+
+            let response = if let Some(url) = proxy {
+                Client::builder()
+                    .build(ProxyTunnel::new(url)?)
+                    .request(req)
+                    .await?
             } else {
-                None
+                Client::new().request(req).await?
+            };
+
+            let body = hyper::body::to_bytes(response.into_body()).await?;
+            let data: APResolveData = serde_json::from_slice(body.as_ref())?;
+
+            let ap = if ap_port.is_some() || proxy.is_some() {
+                data.ap_list.into_iter().find_map(|ap| {
+                    if ap.parse::<Uri>().ok()?.port()? == port {
+                        Some(ap)
+                    } else {
+                        None
+                    }
+                })
+            } else {
+                data.ap_list.into_iter().next()
             }
-        })
+            .ok_or("empty AP List")?;
+
+            Ok(ap)
+        }
+
+        pub async fn apresolve_or_fallback(proxy: &Option<Url>, ap_port: &Option<u16>) -> String {
+            apresolve(proxy, ap_port).await.unwrap_or_else(|e| {
+                warn!("Failed to resolve Access Point: {}", e);
+                warn!("Using fallback \"{}\"", AP_FALLBACK);
+                AP_FALLBACK.into()
+            })
+        }
     } else {
-        data.ap_list.into_iter().next()
+        pub async fn apresolve_or_fallback(_: &Option<Url>, _: &Option<u16>) -> String {
+            AP_FALLBACK.to_string()
+        }
     }
-    .ok_or("empty AP List")?;
-
-    Ok(ap)
-}
-
-pub async fn apresolve_or_fallback(proxy: &Option<Url>, ap_port: &Option<u16>) -> String {
-    apresolve(proxy, ap_port).await.unwrap_or_else(|e| {
-        warn!("Failed to resolve Access Point: {}", e);
-        warn!("Using fallback \"{}\"", AP_FALLBACK);
-        AP_FALLBACK.into()
-    })
 }

core/src/lib.rs

@@ -3,6 +3,8 @@
 #[macro_use]
 extern crate log;
 #[macro_use]
+extern crate cfg_if;
+#[macro_use]
 extern crate serde_derive;
 #[macro_use]
 extern crate pin_project_lite;

core/src/proxytunnel.rs

@@ -1,16 +1,6 @@
-use futures::Future;
-use hyper::Uri;
-use std::{
-    io,
-    net::{SocketAddr, ToSocketAddrs},
-    pin::Pin,
-    task::Poll,
-};
-use tokio::{
-    io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt},
-    net::TcpStream,
-};
-use tower_service::Service;
+use std::io;
+
+use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
 
 pub async fn connect<T: AsyncRead + AsyncWrite + Unpin>(
     mut proxy_connection: T,
@@ -64,43 +54,56 @@ pub async fn connect<T: AsyncRead + AsyncWrite + Unpin>(
     }
 }
 
-#[derive(Clone)]
-pub struct ProxyTunnel {
-    proxy_addr: SocketAddr,
-}
+cfg_if! {
+    if #[cfg(feature = "apresolve")] {
+        use std::future::Future;
+        use std::net::{SocketAddr, ToSocketAddrs};
+        use std::pin::Pin;
+        use std::task::Poll;
 
-impl ProxyTunnel {
-    pub fn new<T: ToSocketAddrs>(addr: T) -> io::Result<Self> {
-        let addr = addr.to_socket_addrs()?.next().ok_or_else(|| {
-            io::Error::new(io::ErrorKind::InvalidInput, "No socket address given")
-        })?;
-        Ok(Self { proxy_addr: addr })
-    }
-}
-
-impl Service<Uri> for ProxyTunnel {
-    type Response = TcpStream;
-    type Error = io::Error;
-    type Future = Pin<Box<dyn Future<Output = io::Result<TcpStream>> + Send>>;
-
-    fn poll_ready(&mut self, _: &mut std::task::Context<'_>) -> Poll<io::Result<()>> {
-        Poll::Ready(Ok(()))
-    }
-
-    fn call(&mut self, url: Uri) -> Self::Future {
-        let proxy_addr = self.proxy_addr;
-        let fut = async move {
-            let host = url
-                .host()
-                .ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "Host is missing"))?;
-            let port = url
-                .port()
-                .ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "Port is missing"))?;
-
-            let conn = TcpStream::connect(proxy_addr).await?;
-            connect(conn, host, port.as_u16()).await
-        };
-
-        Box::pin(fut)
+        use hyper::service::Service;
+        use hyper::Uri;
+        use tokio::net::TcpStream;
+
+        #[derive(Clone)]
+        pub struct ProxyTunnel {
+            proxy_addr: SocketAddr,
+        }
+
+        impl ProxyTunnel {
+            pub fn new<T: ToSocketAddrs>(addr: T) -> io::Result<Self> {
+                let addr = addr.to_socket_addrs()?.next().ok_or_else(|| {
+                    io::Error::new(io::ErrorKind::InvalidInput, "No socket address given")
+                })?;
+                Ok(Self { proxy_addr: addr })
+            }
+        }
+
+        impl Service<Uri> for ProxyTunnel {
+            type Response = TcpStream;
+            type Error = io::Error;
+            type Future = Pin<Box<dyn Future<Output = io::Result<TcpStream>> + Send>>;
+
+            fn poll_ready(&mut self, _: &mut std::task::Context<'_>) -> Poll<io::Result<()>> {
+                Poll::Ready(Ok(()))
+            }
+
+            fn call(&mut self, url: Uri) -> Self::Future {
+                let proxy_addr = self.proxy_addr;
+                let fut = async move {
+                    let host = url
+                        .host()
+                        .ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "Host is missing"))?;
+                    let port = url
+                        .port()
+                        .ok_or_else(|| io::Error::new(io::ErrorKind::InvalidInput, "Port is missing"))?;
+
+                    let conn = TcpStream::connect(proxy_addr).await?;
+                    connect(conn, host, port.as_u16()).await
+                };
+
+                Box::pin(fut)
+            }
+        }
     }
 }