Cargo.lock

@@ -54,7 +54,7 @@ dependencies = [
 
 [[package]]
 name = "lookaround"
-version = "0.1.5"
+version = "0.1.4"
 dependencies = [
  "mac_address",
  "rand",

Cargo.toml

@@ -9,7 +9,7 @@ license = "AGPL-3.0"
 name = "lookaround"
 readme = "README.md"
 repository = "https://six-five-six-four.com/git/reactor/lookaround"
-version = "0.1.5"
+version = "0.1.4"
 
 [dependencies]
 mac_address = "1.1.2"

README.md

@@ -3,6 +3,9 @@
 
 _Has this ever happened to you?_
 
+LookAround is a Rust program for looking up your computers' MAC and IP addresses
+within a LAN. There's no central server, so it's not a look-up, it's a look-around.
+
 ```text
 $ lookaround client
 
@@ -12,14 +15,12 @@ Found 3 peers:
 33:33:33:33:33:33 = 192.168.1.103 `old-laptop`
 ```
 
-LookAround is a Rust program for looking up your computers' MAC and IP addresses
-within a LAN. There's no central server, so it's not a look-up, it's a look-around.
+The LookAround client uses IP multicast to find LookAround servers within the
+same multicast domain.
 
-The client uses IP multicast to find servers within the
-same multicast domain, similar to Avahi and Bonjour.
-
-Systems self-identify by MAC address and nicknames. Public keys with
-TOFU semantics are intended before v1.0.0.
+MAC addresses change slower than IP addresses, so if you know that
+`11:11:11:11:11:11` is your laptop, and your laptop is running LookAround,
+LookAround will find the IP for you.
 
 ## Installation
 
@@ -56,7 +57,7 @@ systemctl --user enable lookaround
 Run the server manually: (If you haven't installed it with systemd yet)
 
 ```bash
-lookaround server --nickname my-desktop
+lookaround server
 ```
 
 Run a client to ping all servers in the same multi-cast domain:
@@ -65,12 +66,6 @@ Run a client to ping all servers in the same multi-cast domain:
 lookaround client
 ```
 
-Check which IP addresses LookAround will auto-detect:
-
-```bash
-lookaround my-ips
-```
-
 ## Contributing
 Pull requests are welcome. This is a hobby project, so I may reject 
 contributions that are too big to review.

src/client.rs

@@ -30,9 +30,7 @@ pub async fn client <I : Iterator <Item=String>> (mut args: I) -> Result <(), Ap
 	let socket = UdpSocket::bind (SocketAddrV4::new (Ipv4Addr::UNSPECIFIED, 0)).await?;
 	
 	for bind_addr in bind_addrs {
-		if let Err (e) = socket.join_multicast_v4 (common_params.multicast_addr, bind_addr) {
-			println! ("Error joining multicast group with iface {}: {:?}", bind_addr, e);
-		}
+		socket.join_multicast_v4 (common_params.multicast_addr, bind_addr)?;
 	}
 	
 	let mut idem_id = [0u8; 8];

src/server.rs

@@ -15,9 +15,7 @@ pub async fn server <I: Iterator <Item=String>> (args: I) -> Result <(), AppErro
 	let socket = UdpSocket::bind (SocketAddrV4::new (Ipv4Addr::UNSPECIFIED, params.common.server_port)).await?;
 	
 	for bind_addr in &params.bind_addrs {
-		if let Err (e) = socket.join_multicast_v4 (params.common.multicast_addr, *bind_addr) {
-			println! ("Error joining multicast group with iface {}: {:?}", bind_addr, e);
-		}
+		socket.join_multicast_v4 (params.common.multicast_addr, *bind_addr)?;
 	}
 	
 	serve_interface (params, socket).await?;