diff --git a/src/runtime2/port.rs b/src/runtime2/port.rs
new file mode 100644
index 0000000000000000000000000000000000000000..df7a7d64c3d949f8f3bbd24aa610e51b9faa170b
--- /dev/null
+++ b/src/runtime2/port.rs
@@ -0,0 +1,53 @@
+#[derive(Clone, Copy, PartialEq, Eq)]
+pub(crate) struct PortIdLocal {
+    pub index: u32,
+}
+
+impl PortIdLocal {
+    pub fn new(id: u32) -> Self {
+        Self{ index: id }
+    }
+
+    // TODO: Unsure about this, maybe remove, then also remove all struct
+    //  instances where I call this
+    pub fn new_invalid() -> Self {
+        Self{ index: u32::MAX }
+    }
+
+    pub fn is_valid(&self) -> bool {
+        return self.index != u32::MAX;
+    }
+}
+
+pub enum PortKind {
+    Putter,
+    Getter,
+}
+
+pub enum PortOwnership {
+    Unowned, // i.e. held by a native application
+    Owned,
+    InTransit,
+}
+
+/// Represents a port inside of the runtime. May be without owner if it is
+/// created by the application interfacing with the runtime, instead of being
+/// created by a connector.
+pub struct Port {
+    // Once created, these values are immutable
+    pub self_id: PortIdLocal,
+    pub peer_id: PortIdLocal,
+    pub kind: PortKind,
+    // But this can be changed, but only by the connector that owns it
+    pub ownership: PortOwnership,
+    pub owning_connector: u32,
+    pub peer_connector: u32, // might be temporarily inconsistent while peer port is sent around in non-sync phase.
+}
+
+
+
+// TODO: Turn port ID into its own type
+pub struct Channel {
+    pub putter_id: u32, // can put on it, so from the connector's point of view, this is an output
+    pub getter_id: u32, // vice versa: can get on it, so an input for the connector
+}
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