Merge pull request #11 from xmh0511/v2

avoid unnecessary copy and fix lfreq not found on macOS

Cargo.toml

@@ -14,7 +14,7 @@ keywords = ["tun", "network", "tunnel", "bindings"]
 byteorder = { version = "1" }
 bytes = { version = "1" }
 futures-core = { version = "0.3", optional = true }
-libc = "0.2"
+libc = "0.2.152"
 log = "0.4"
 thiserror = "1"
 tokio = { version = "1", features = ["net", "macros"], optional = true }

src/platform/android/device.rs

@@ -48,7 +48,7 @@ impl Device {
     /// Split the interface into a `Reader` and `Writer`.
     pub fn split(self) -> (posix::Reader, posix::Writer) {
         let fd = Arc::new(self.queue.tun);
-        (posix::Reader(fd.clone()), posix::Writer(fd.clone()))
+        (posix::Reader(fd.clone()), posix::Writer(fd))
     }
 
     /// Return whether the device has packet information

src/platform/ios/device.rs

@@ -51,7 +51,7 @@ impl Device {
     /// Split the interface into a `Reader` and `Writer`.
     pub fn split(self) -> (posix::Reader, posix::Writer) {
         let fd = Arc::new(self.queue.tun);
-        (posix::Reader(fd.clone()), posix::Writer(fd.clone()))
+        (posix::Reader(fd.clone()), posix::Writer(fd))
     }
 
     /// Return whether the device has packet information

src/platform/linux/device.rs

@@ -168,7 +168,7 @@ impl Device {
     /// Split the interface into a `Reader` and `Writer`.
     pub fn split(mut self) -> (posix::Reader, posix::Writer) {
         let fd = Arc::new(self.queues.swap_remove(0).tun);
-        (posix::Reader(fd.clone()), posix::Writer(fd.clone()))
+        (posix::Reader(fd.clone()), posix::Writer(fd))
     }
 
     /// Set non-blocking mode