[PD1] crypto changes and TLS almost done

Projs/PD1/internal/utils/networking/connection.go

@@ -1,18 +1,18 @@
 package networking
 
 import (
+	"crypto/tls"
+	"crypto/x509"
 	"encoding/json"
-	"net"
 )
 
 type Connection[T any] struct {
-	Conn    net.Conn
+	Conn    *tls.Conn
 	encoder *json.Encoder
 	decoder *json.Decoder
 }
 
-
-func NewConnection[T any](netConn net.Conn) Connection[T] {
+func NewConnection[T any](netConn *tls.Conn) Connection[T] {
 	return Connection[T]{
 		Conn:    netConn,
 		encoder: json.NewEncoder(netConn),
@@ -20,16 +20,21 @@ func NewConnection[T any](netConn net.Conn) Connection[T] {
 	}
 }
 
-func (jc Connection[T]) Send(obj T) {
-	if err := jc.encoder.Encode(&obj); err != nil {
+func (c Connection[T]) Send(obj T) {
+	if err := c.encoder.Encode(&obj); err != nil {
 		panic("Failed encoding data or sending it to connection")
 	}
 }
 
-func (jc Connection[T]) Receive() T {
+func (c Connection[T]) Receive() T {
 	var obj T
-	if err := jc.decoder.Decode(&obj); err != nil {
+	if err := c.decoder.Decode(&obj); err != nil {
 		panic("Failed decoding data or reading it from connection")
 	}
 	return obj
 }
+
+func (c Connection[T]) GetPeerCertificate() *x509.Certificate {
+	state := c.Conn.ConnectionState()
+	return state.PeerCertificates[0]
+}