refactor: replace SyncWrapper with sync_wrapper crate

Cargo.toml

@@ -29,6 +29,7 @@ tracing = { version = "0.1", default-features = false, features = ["std"], optio
 tokio = { version = "1", optional = true, default-features = false  }
 tower-service ={ version = "0.3", optional = true }
 tower = { version = "0.4.1", optional = true, default-features = false, features = ["make", "util"] }
+sync_wrapper = { version = "1", optional = true }
 
 [dev-dependencies]
 hyper = { version = "1.2.0", features = ["full"] }
@@ -57,7 +58,7 @@ full = [
 ]
 
 client = ["hyper/client", "dep:tracing", "dep:futures-channel", "dep:tower", "dep:tower-service"]
-client-legacy = ["client", "dep:socket2", "tokio/sync"]
+client-legacy = ["client", "dep:socket2", "dep:sync_wrapper", "tokio/sync"]
 
 server = ["hyper/server"]
 server-auto = ["server", "http1", "http2"]

src/client/legacy/client.rs

@@ -16,6 +16,7 @@ use http::uri::Scheme;
 use hyper::header::{HeaderValue, HOST};
 use hyper::rt::Timer;
 use hyper::{body::Body, Method, Request, Response, Uri, Version};
+use sync_wrapper::SyncWrapper;
 use tracing::{debug, trace, warn};
 
 use super::connect::capture::CaptureConnectionExtension;
@@ -24,7 +25,7 @@ use super::connect::HttpConnector;
 use super::connect::{Alpn, Connect, Connected, Connection};
 use super::pool::{self, Ver};
 
-use crate::common::{lazy as hyper_lazy, timer, Exec, Lazy, SyncWrapper};
+use crate::common::{lazy as hyper_lazy, timer, Exec, Lazy};
 
 type BoxSendFuture = Pin<Box<dyn Future<Output = ()> + Send>>;
 

src/common/mod.rs

@@ -4,14 +4,10 @@ pub(crate) mod exec;
 #[cfg(feature = "client")]
 mod lazy;
 pub(crate) mod rewind;
-#[cfg(feature = "client")]
-mod sync;
 pub(crate) mod timer;
 
 #[cfg(feature = "client")]
 pub(crate) use exec::Exec;
 
 #[cfg(feature = "client")]
 pub(crate) use lazy::{lazy, Started as Lazy};
-#[cfg(feature = "client")]
-pub(crate) use sync::SyncWrapper;