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+checksum = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-build"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "ws2_32-sys"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
+]

Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "msg"
+version = "0.1.0"
+authors = ["Isabelle L. <me@izzabelle.dev>"]
+edition = "2018"
+
+[dependencies]
+structopt = "0.3.14"
+async-std = { version = "1.5.0",features = ["attributes"] }
+chrono = "0.4.11"
+serde = { version = "1.0.107", features = ["derive"] }
+serde_json = "1.0.52"

justfile

@@ -0,0 +1,6 @@
+build:
+	cargo build
+run-server:
+	cargo run -- --server
+run-client:
+	cargo run

src/lib.rs

@@ -0,0 +1,29 @@
+use async_std::net::TcpListener;
+use async_std::net::TcpStream;
+use async_std::prelude::*;
+
+pub type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
+
+pub async fn server(port: u16) -> Result<()> {
+    let listener = TcpListener::bind(format!("127.0.0.1:{}", &port)).await?;
+    println!("online as server at: {}:{}", listener.local_addr()?.ip(), port);
+    let mut incoming = listener.incoming();
+
+    while let Some(stream) = incoming.next().await {
+        let mut stream = stream?;
+        // handle stream
+        println!("new stream from: {}", stream.peer_addr()?.ip());
+        stream.write_all(b"hello world").await?;
+    }
+
+    Ok(())
+}
+
+pub async fn client(port: u16) -> Result<()> {
+    let mut stream = TcpStream::connect(format!("127.0.0.1:{}", &port)).await?;
+    println!("connection established to: {}:{}", stream.peer_addr()?.ip(), port);
+    let mut buf = vec![0u8; 1024];
+    stream.read(&mut buf).await?;
+    println!("{}", String::from_utf8_lossy(&mut buf));
+    Ok(())
+}

src/main.rs

@@ -0,0 +1,31 @@
+use structopt::StructOpt;
+
+#[derive(StructOpt)]
+#[structopt(name = "msg", about = "I have no idea what i'm doing but this is async")]
+struct Opt {
+    /// start the application as a server
+    #[structopt(short = "s", long = "server")]
+    server: bool,
+
+    /// port, defaults to 1337
+    #[structopt(short = "p", long = "port")]
+    port: Option<u16>,
+}
+
+#[async_std::main]
+async fn main() {
+    let options = Opt::from_args();
+    let port = if let Some(port) = options.port { port } else { 1337 };
+    match options.server {
+        true => {
+            if let Err(err) = msg::server(port).await {
+                println!("an error occured: {:?}", err);
+            }
+        }
+        false => {
+            if let Err(err) = msg::client(port).await {
+                println!("an error occured: {:?}", err);
+            }
+        }
+    }
+}

src/packet.rs

@@ -0,0 +1,27 @@
+use chrono::prelude::*;
+
+struct NetworkPacket(String);
+
+struct Packet {
+    packet_type: PacketType,
+    packet_length: u64,
+    packet_contents: Vec<u8>,
+}
+
+#[repr(u8)]
+enum PacketType {
+    NewMessage = 0,
+}
+
+struct NewMessage {
+    user: String,
+    contents: String,
+    timestamp: i64,
+}
+
+impl NewMessage {
+    pub fn new(user: String, contents: String) -> Self {
+        let timestamp = Utc::now().timestamp();
+        Self { user, contents, timestamp }
+    }
+}