From b9590979442a19f286bf63c1f4a764f7073ad2d1 Mon Sep 17 00:00:00 2001
From: Mark <>
Date: Mon, 26 May 2025 09:38:41 +0200
Subject: [PATCH] init

---
 .gitignore  |   1 +
 Cargo.lock  | 605 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   9 +
 src/main.rs |  64 ++++++
 4 files changed, 679 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..107a957
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,605 @@
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+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "wstcp"
+version = "0.1.0"
+dependencies = [
+ "futures-util",
+ "tokio",
+ "tokio-tungstenite",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1702d9583232ddb9174e01bb7c15a2ab8fb1bc6f227aa1233858c351a3ba0cb"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..37a1253
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "wstcp"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+futures-util = "0.3.31"
+tokio = { version = "1.45.1", features = ["macros", "net", "rt", "time"] }
+tokio-tungstenite = "0.26.2"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..e3153b0
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,64 @@
+use std::time::Duration;
+
+use futures_util::{SinkExt, StreamExt};
+use tokio::{
+    io::{AsyncReadExt, AsyncWriteExt},
+    net::{TcpListener, TcpStream},
+    spawn,
+    time::sleep,
+};
+use tokio_tungstenite::tungstenite::Message;
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() {
+    let addr = std::env::var("TCPWS_ADDR").expect("expected env var TCPWS_ADDR");
+    let listener =
+        TcpListener::bind(std::env::var("TCPWS_BIND").expect("expected env var TCPWS_BIND"))
+            .await
+            .unwrap();
+    loop {
+        if let Ok((ws, _)) = listener.accept().await {
+            if let Ok(con) = TcpStream::connect(&addr).await {
+                spawn(async move {
+                    let (mut con_rx, mut con_tx) = con.into_split();
+                    let ws = tokio_tungstenite::accept_async(ws).await.unwrap();
+                    let (mut ws_tx, mut ws_rx) = ws.split();
+                    spawn(async move {
+                        loop {
+                            match ws_rx.next().await {
+                                Some(Ok(Message::Binary(data))) => {
+                                    con_tx.write_all(&data).await.unwrap();
+                                }
+                                Some(Ok(Message::Text(data))) => {
+                                    con_tx.write_all(data.as_bytes()).await.unwrap();
+                                }
+                                Some(Ok(
+                                    Message::Ping(_) | Message::Pong(_) | Message::Frame(_),
+                                )) => {}
+                                None | Some(Err(_)) | Some(Ok(Message::Close(_))) => {
+                                    con_tx.shutdown().await.ok();
+                                    break;
+                                }
+                            }
+                        }
+                    });
+                    let mut buf = [0u8; 256];
+                    loop {
+                        match con_rx.read(&mut buf).await {
+                            Err(_) | Ok(0) => {
+                                ws_tx.close().await.ok();
+                                break;
+                            }
+                            Ok(n) => ws_tx
+                                .send(Message::binary(buf[0..n].to_vec()))
+                                .await
+                                .unwrap(),
+                        }
+                    }
+                });
+            }
+        } else {
+            sleep(Duration::from_millis(100)).await;
+        }
+    }
+}