From 3da5d618b4c9248d74a500b2eba6450ff68590e8 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 11 Jul 2018 14:48:09 +0300
Subject: Add UDP comms thread

---
 src/main.rs |  6 +++++-
 src/upnp.rs | 12 +++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 872a1f7..5ddb078 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,6 +9,7 @@ use std::thread;
 use std::sync::mpsc;
 
 mod cli;
+mod upnp;
 
 fn main() {
     let app = App::new(env!("CARGO_PKG_NAME"))
@@ -42,8 +43,11 @@ fn main() {
         process::exit(1);
     }
 
-    let (tx, rx) = mpsc::channel();
+    let _udp = thread::spawn(move || {
+        upnp::discover();
+    });
 
+    let (tx, rx) = mpsc::channel();
     let child = thread::spawn(move || {
         let mut controller = cli::Controller::init();
         loop {
diff --git a/src/upnp.rs b/src/upnp.rs
index f2e4a5a..b42eab3 100644
--- a/src/upnp.rs
+++ b/src/upnp.rs
@@ -1,5 +1,7 @@
 use std::net::UdpSocket;
+use std::str;
 
+const MULTICAST_ADDRESS: &'static str = "239.255.255.250:1900";
 const SEARCH_REQUEST: &'static str = "M-SEARCH * HTTP/1.1\r\n
 Host: 239.255.255.250:1900\r\n
 Man: \"ssdp:discover\"\r\n
@@ -10,5 +12,13 @@ User-Agent: slingr/0.1.0\r\n\r\n";
 pub fn discover() {
     println!("Discovering...");
     let socket = UdpSocket::bind("[::]:0").unwrap();
-    socket.send_to(SEARCH_REQUEST.as_bytes(), "239.255.255.250:1900").expect("couldn't send data");
+    socket.send_to(SEARCH_REQUEST.as_bytes(), MULTICAST_ADDRESS).expect("couldn't send data");
+
+    let mut buf = [0; 1024];
+    loop {
+        let (amt, _src) = socket.recv_from(&mut buf).expect("Didn't receive data...");
+        let filled_buf = &mut buf[..amt];
+        let s = str::from_utf8(filled_buf).unwrap();
+        println!("Got: {}\n\n", s);
+    }
 }
-- 
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