`Client` change `async fn` to `fn`, because `async` is not used

Cargo.lock

@@ -297,9 +297,9 @@ checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
 
 [[package]]
 name = "tokio"
-version = "1.19.0"
+version = "1.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f392c8f16bda3456c0b00c6de39cb100449b98de55ac41c6cdd2bfcf53a1245"
+checksum = "95eec79ea28c00a365f539f1961e9278fbcaf81c0ff6aaf0e93c181352446948"
 dependencies = [
  "num_cpus",
  "once_cell",

Cargo.toml

@@ -13,4 +13,4 @@ clap = { version = "3.1.18", features = ["derive"] }
 libloading = "0.7.3"
 log = { version = "0.4.17", features = ["release_max_level_info", "max_level_trace"] }
 simple_logger = { version = "2.1.0", default-features = false, features = ["colors"] }
-tokio = { version = "1.19.0", features = ["rt-multi-thread", "macros"] }
+tokio = { version = "1.19.1", features = ["rt-multi-thread", "macros"] }

plugin_test/src/lib.rs

@@ -28,7 +28,7 @@ impl Command for PluginTest {
     }
 
     async fn execute(&self, client: &mut Client, _args: Vec<&str>, _commands: &CommandManagerType) {
-        client.send("content").await.expect("send message")
+        client.send("content").expect("send message")
     }
 }
 

src/commands/help.rs

@@ -26,7 +26,6 @@ impl Command for CommandHelp {
         for command in command_manager.commands.iter() {
             client
                 .send(&format!("{} - {}", command.name(), command.help()))
-                .await
                 .expect("send message");
         }
     }

src/tcp/client.rs

@@ -16,7 +16,7 @@ impl Client {
     }
 
     /// Read message/buffer from Client
-    pub async fn read(&mut self) -> anyhow::Result<String> {
+    pub fn read(&mut self) -> anyhow::Result<String> {
         // allocate an empty buffer of length 1024 bytes
         let mut buf = [0; 1024];
 
@@ -30,7 +30,7 @@ impl Client {
     }
 
     /// Send message to Client
-    pub async fn send(&mut self, content: &str) -> io::Result<()> {
+    pub fn send(&mut self, content: &str) -> io::Result<()> {
         // add a new line at the end of the content
         let content = format!("{content}\n\r");
 

src/tcp/handle_connection.rs

@@ -15,7 +15,7 @@ pub async fn handle_connection(
 
     loop {
         // read client message/buffer
-        let buf = client.read().await?;
+        let buf = client.read()?;
 
         // split message by whitespace
         let args: &Vec<&str> = &buf.split_ascii_whitespace().collect();