1 files changed, 47 insertions, 0 deletions
diff --git a/src/backend.rs b/src/backend.rs
index 8b13789..fce8a26 100644
--- a/src/backend.rs
+++ b/src/backend.rs
@@ -1 +1,48 @@
+use crate::{
+    codec::Codec,
+    context::Context,
+    event::handler::EventHandler,
+    transport::{ConnectionOf, Result, Transport, receiver::PacketReceiver, sender::PacketSender},
+};
 
+// TODO : check backend ! maybe better implementations
+// TODO : maybe add default functions implementation
+// TODO : not sure about send/recv functions
+
+pub trait Backend<Packet, Data = (), Uid = u64>
+where
+    Uid: PartialEq,
+    Data: Send + Sync + 'static,
+    Packet: Codec<Data> + Send + Sync + 'static,
+    Self::Transport: Transport<Uid, Data = Data>,
+    <Self::Transport as Transport<Uid>>::Sender: PacketSender<Data> + Clone,
+    <Self::Transport as Transport<Uid>>::Receiver: PacketReceiver<Data, Uid>,
+{
+    type Transport: Transport<Uid, Data = Data>;
+
+    fn transport(&self) -> &Self::Transport;
+    fn event_handler(&self) -> &EventHandler<Packet, Data, Uid>;
+    fn make_context(&self) -> Context<Data>;
+
+    fn recv(
+        &self,
+        conn: &ConnectionOf<Uid, Self::Transport>,
+        ctx: &Context<Data>,
+    ) -> Result<(Uid, Packet)>;
+
+    fn send(
+        &self,
+        conn: &ConnectionOf<Uid, Self::Transport>,
+        packet: &Packet,
+        ctx: &Context<Data>,
+    ) -> Result<()>;
+
+    fn connect(
+        &self,
+        addr: <Self::Transport as Transport<Uid>>::Addr,
+    ) -> Result<ConnectionOf<Uid, Self::Transport>>;
+
+    fn serve<A>(&self, addr: <Self::Transport as Transport<Uid>>::Addr, on_accept: A) -> Result<()>
+    where
+        A: Fn(&Self, &ConnectionOf<Uid, Self::Transport>, &Context<Data>) + Send + Sync + 'static;
+}