wip structures and message signature

client-network/src/registration.rs

@@ -1,4 +1,5 @@
-use crate::cryptographic_signature::{CryptographicSignature, formatPubKey};
+use crate::cryptographic_signature::{CryptographicSignature, formatPubKey, sign_message};
+use crate::messages_structure::HandshakeMessage;
 use std::net::UdpSocket;
 ///
 /// Registration with the server happens in two steps: first, the client
@@ -30,8 +31,16 @@ async fn register_with_the_server(crypto_pair: CryptographicSignature) -> Result
 /// to receive requests by sending a Hello request to the client. If the client doesn’t reply to the Hello
 /// request with a properly signed message, its address will not be published by the server.
 fn register_ip_addresses(crypto_pair: CryptographicSignature) {
-   let socket = UdpSocket::bind("127.0.0.1:4242");  
-   //TODO
+    let socket = UdpSocket::bind("127.0.0.1:4242").expect("bind failed"); 
+    let username_size = crypto_pair.username.len();
+    let hello_handshake = HandshakeMessage::hello(0, username_size as u16, crypto_pair.username.clone()); 
+    let hello_handshake_serialized = hello_handshake.serialize();
+    let message_signed = sign_message(crypto_pair, hello_handshake_serialized); 
+    socket.send_to(&message_signed, "jch.irif.fr:8443").expect("send failed");
+    let mut buf = [0u8; 1024];
+    socket.recv_from(&mut buf).expect("receive failed");
+    let hello_handshake_received = HandshakeMessage::parse(buf);
+    hello_handshake_received.display();
 }
 
 #[cfg(test)]
@@ -39,12 +48,12 @@ mod tests {
     // Note this useful idiom: importing names from outer (for mod tests) scope.
     use super::*;
 
-    #[tokio::test]
+    /*#[tokio::test]
     async fn creating_cryptographic_signature() {
         let username = String::from("charlie_kirk");
         let crypto_pair = CryptographicSignature::new(username);
     if let Err(e) = register_with_the_server(crypto_pair).await {
         eprintln!("Error during registration: {}", e);
     }
-    }
+    }*/
 }