initial commit

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "myip"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "myip"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

myip.code-workspace

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+{
+	"folders": [
+		{
+			"path": "."
+		}
+	],
+	"settings": {}
+}

src/main.rs

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+use std::io::prelude::*;
+use std::net::{TcpListener, TcpStream};
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    // make it 8k?
+    // https://stackoverflow.com/questions/686217/maximum-on-http-header-values
+    let mut buffer = [0; 1024];
+
+    stream.read(&mut buffer).unwrap();
+
+    let ip = stream.peer_addr().unwrap().ip().to_string();
+
+    let response = format!(
+        "HTTP/1.1 200 OK\r\nContent-Lengh: {}\r\n\r\n{}",
+        ip.len(),
+        ip
+    );
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}