chore: reorg

__network/tcp/tcp_server/Cargo.lock

@@ -0,0 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "udp_server"
+version = "0.1.0"

__network/tcp/tcp_server/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "udp_server"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

__network/tcp/tcp_server/src/main.rs

@@ -0,0 +1,39 @@
+use std::thread;
+use std::net::{ TcpListener, TcpStream, Shutdown };
+use std::io::{ Read, Write };
+
+fn handle_client(mut stream: TcpStream) {
+    let mut data = [0_u8; 50]; // using 50 byte buffer
+    while match stream.read(&mut data) {
+        Ok(size) => {
+            // echo everything!
+            stream.write(&data[0..size]).unwrap();
+            true
+        },
+        Err(_) => {
+            println!("An error occurred, terminating connection with {}", stream.peer_addr().unwrap());
+            stream.shutdown(Shutdown::Both).unwrap();
+            false
+        },
+    } {}
+}
+
+fn main() {
+    let listener = TcpListener::bind("0.0.0.0:3333").unwrap();
+    // accept connections and process them, spawning a new thread for each one
+    println!("Server listening on port 3333");
+    for stream in listener.incoming() {
+        match stream {
+            Ok(stream) => {
+                println!("New connection: {}", stream.peer_addr().unwrap());
+                thread::spawn(move|| {
+                    // connection succeeded
+                    handle_client(stream)
+                });
+            },
+            Err(e) => println!("Error: {}", e),
+        }
+    }
+    // close the socket server
+    drop(listener);
+}