diff --git a/src/main.rs b/src/main.rs
index c4eaf91..1c269af 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,4 @@
-use std::{cell::RefCell, env, fs, io::BufRead, collections::HashMap};
-use std::vec::Vec;
-use std::{cell::RefMut, rc::Rc};
+use std::{cell::{RefMut, RefCell}, rc::Rc, fs, vec::Vec, env, io::BufRead, collections::HashMap};
 
 use libspa::ReadableDict;
 use pipewire::{types::ObjectType, Context, MainLoop};
@@ -40,6 +38,24 @@ struct LinkDef {
     port_out: Rc<PortDef>,
 }
 
+#[derive(Debug)]
+struct Pair {
+    node: String,
+    port: String,
+}
+
+impl PortDef {
+    fn is_pair(&self, pair: &Pair) -> bool {
+	self.name.eq(&pair.port) && self.node.name.eq(&pair.node)
+    }
+    fn to_pair(&self) -> Pair {
+	Pair {
+	    node: self.node.name.to_string(),
+	    port: self.name.to_string()
+	}
+    }
+}
+
 struct AppState {
     ports: Vec<Rc<Port>>,
     nodes: Vec<Rc<Node>>,
@@ -105,8 +121,8 @@ impl AppState {
         search(&self.nodes, |a| a.id == id)
     }
 
-    fn get_port_by_name(&self, name: String) -> Option<Rc<Port>> {
-        search(&self.ports, |a| a.name.eq(&name))
+    fn get_port_by_pair(&self, pair: &Pair) -> Option<Rc<Port>> {
+        search(&self.ports, |a| a.name.eq(&pair.port) && a.node.name.eq(&pair.node))
     }
 
     fn try_add_port(&mut self, id: u32, name: String, node_id: u32) -> bool {
@@ -145,7 +161,7 @@ impl AppState {
         true
     }
 
-    fn create_links(&mut self, port_name: String, core: Rc<pw::Core>) {
+    fn create_links(&mut self, pair: Pair, core: Rc<pw::Core>) {
         #[derive(Debug)]
         struct TempLink {
             port_in: Option<Rc<Port>>,
@@ -154,10 +170,10 @@ impl AppState {
 
         self.link_def
             .iter()
-            .filter(|link| (link.port_in.name.eq(&port_name) || link.port_out.name.eq(&port_name)))
+            .filter(|link| (link.port_in.is_pair(&pair) || link.port_out.is_pair(&pair)))
             .map(|a| TempLink {
-                port_in: self.get_port_by_name(a.port_in.name.to_string()),
-                port_out: self.get_port_by_name(a.port_out.name.to_string()),
+                port_in: self.get_port_by_pair(&a.port_in.to_pair()),
+                port_out: self.get_port_by_pair(&a.port_out.to_pair()),
             }).filter(|a| a.port_in.is_some() && a.port_out.is_some()).for_each(|a| {
                 let port_in = a.port_in.unwrap();
                 let port_out = a.port_out.unwrap();
@@ -226,12 +242,13 @@ fn deal_with_port(
         if let (Some(name), Some(node_id)) = (props.get("port.name"), props.get("node.id")) {
             if let Ok(node_id) = node_id.parse::<u32>() {
                 if state.try_add_port(port.id, name.to_string(), node_id) {
+		    let node_name = state.get_node(node_id).unwrap().name.to_string();
                     println!(
                         "Got port {} for {}",
                         name,
-                        state.get_node(node_id).unwrap().name
+			node_name
                     );
-                    state.create_links(name.to_string(), core)
+                    state.create_links(Pair {node: node_name.to_string(), port: name.to_string() }, core)
                 }
             } else {
                 println!("Clould not parse {}'s node.id({})", name, node_id)
@@ -284,20 +301,24 @@ fn parse_file(path: std::path::PathBuf, get_names: bool) -> Result<AppState, Box
                 },
             };
 
-            let port_out = match port_def.get_mut(&caps["port_out"]) {
+	    let port_out_store = format!("{} {}", &caps["node_out"], &caps["port_out"]);
+
+            let port_out = match port_def.get_mut(&port_out_store) {
                 Some(port) => port.to_owned(),
                 None => {
                     let port = Rc::new(PortDef { node: node_out.clone(), name: caps["port_out"].to_string() } );
-                    port_def.insert(caps["port_out"].to_string(), port.clone());
+                    port_def.insert(port_out_store, port.clone());
                     port
                 },
             };
 
-            let port_in = match port_def.get_mut(&caps["port_in"]) {
+	    let port_in_store = format!("{} {}", &caps["node_in"], &caps["port_in"]);
+
+            let port_in = match port_def.get_mut(&port_in_store) {
                 Some(port) => port.to_owned(),
                 None => {
                     let port = Rc::new(PortDef { node: node_in.clone(), name: caps["port_in"].to_string() } );
-                    port_def.insert(caps["port_in"].to_string(), port.clone());
+                    port_def.insert(port_in_store, port.clone());
                     port
                 },
             };
@@ -305,7 +326,7 @@ fn parse_file(path: std::path::PathBuf, get_names: bool) -> Result<AppState, Box
             let link = Rc::new(LinkDef { port_out: port_out.clone(), port_in: port_in.clone() });
 
             link_def.push(link)
-        } else if !line.starts_with('#') {
+        } else if !line.starts_with('#') && !line.is_empty() {
             println!("invalid line: {}", line);
         }
     }
@@ -313,6 +334,9 @@ fn parse_file(path: std::path::PathBuf, get_names: bool) -> Result<AppState, Box
     let node_def = node_def.values().cloned().collect::<Vec<Rc<NodeDef>>>();
     let port_def = port_def.values().cloned().collect::<Vec<Rc<PortDef>>>();
 
+    println!("node_def {:?}", node_def);
+    println!("port_def {:?}", port_def);
+
     Ok(AppState::new(node_def, link_def, port_def, get_names))
 }