Fix clippy warnings and no_std build

src/interface.rs

@@ -14,7 +14,7 @@ pub(crate) type TargetingData = String;
 pub trait InterfaceRequirements {}
 
 #[cfg(feature = "std")]
-pub trait InterfaceRequirements = Send + Sync;
+pub trait InterfaceRequirements: Send + Sync {}
 
 
 /// An interface that can be used to
@@ -53,6 +53,8 @@ pub mod test_interface {
         messages: Vec<(Vec<u8>, TargetingData)>,
     }
 
+    impl InterfaceRequirements for TestInterface {}
+
     impl Interface for TestInterface {
         fn main_loop_iteration(&mut self) -> IFResult<()> {
             Ok(())

src/interfaces/ip.rs

@@ -1,9 +1,7 @@
 use std::net;
-use alloc::vec;
 use alloc::vec::Vec;
 use alloc::string::String;
 
-use crate::interface;
 use crate::interface::{Interface, InterfaceRequirements, TargetingData};
 use crate::message::MessageBytes;
 use crate::res::{IFError, IFResult};
@@ -18,6 +16,8 @@ pub struct IPInterface {
     pub listener: net::TcpListener,
 }
 
+impl InterfaceRequirements for IPInterface {}
+
 impl Interface for IPInterface {
     fn main_loop_iteration(&mut self) -> IFResult<()> {
         println!("Mainloop   {:?}", self.listener.local_addr());
@@ -43,10 +43,10 @@ impl Interface for IPInterface {
         for mut connection in &self.connections {
 
             let mut size_arr: [u8; 4] = [0, 0, 0, 0];
-            connection.read(&mut size_arr);
+            connection.read_exact(&mut size_arr)?;
             let mut size: u32 = 0;
-            for i in 0..4 {
-                size = size * 256 + size_arr[i] as u32;
+            for size_byte in &size_arr {
+                size = size * 256 + *size_byte as u32;
             }
             println!("Size: {:?}", size);
 
@@ -63,7 +63,7 @@ impl Interface for IPInterface {
         &*self.id
     }
     fn send(&mut self, message: &[u8], interface_data: Option<TargetingData>) -> IFResult<()> {
-        let mut addr: net::SocketAddr = match interface_data {
+        let addr: net::SocketAddr = match interface_data {
             Some(ip_string) => ip_string.parse().expect("Unable to parse address"),
             None => return Err(IFError::General(String::from("Not enough info to create connection")))
         };
@@ -79,7 +79,7 @@ impl Interface for IPInterface {
 
         println!("Sending message to {:?}",  self.connections[index].peer_addr().unwrap());
 
-        self.connections[index].write(message);
+        self.connections[index].write_all(message)?;
 
         println!("Sent message");