diff --git a/source/network/packet/PacketBoatPlaced.py b/source/network/packet/PacketBoatPlaced.py
index ab09090..18f93fe 100644
--- a/source/network/packet/PacketBoatPlaced.py
+++ b/source/network/packet/PacketBoatPlaced.py
@@ -6,13 +6,11 @@ from source.network.packet.abc import Packet
 
 @dataclass
 class PacketBoatPlaced(Packet):
+    packet_size: int = 0
+
     def to_bytes(self):
         return b""
 
     @classmethod
     def from_bytes(cls, data: bytes):
         return cls()
-
-    @classmethod
-    def from_connection(cls, connection: socket.socket) -> "PacketBoatPlaced":
-        return cls.from_bytes(connection.recv(0))
diff --git a/source/network/packet/PacketBombPlaced.py b/source/network/packet/PacketBombPlaced.py
index d33f2b6..d45bd71 100644
--- a/source/network/packet/PacketBombPlaced.py
+++ b/source/network/packet/PacketBombPlaced.py
@@ -9,6 +9,8 @@ from source.type import Point2D
 class PacketBombPlaced(Packet):
     position: Point2D = field()
 
+    packet_size: int = 2
+
     def to_bytes(self):
         x, y = self.position
         return x.to_bytes(1, "big") + y.to_bytes(1, "big")
@@ -19,7 +21,3 @@ class PacketBombPlaced(Packet):
             int.from_bytes(data[0:1], "big"),
             int.from_bytes(data[1:2], "big"),
         ))
-
-    @classmethod
-    def from_connection(cls, connection: socket.socket) -> "PacketBombPlaced":
-        return cls.from_bytes(connection.recv(2))
diff --git a/source/network/packet/PacketBombState.py b/source/network/packet/PacketBombState.py
index b09b089..7605cd6 100644
--- a/source/network/packet/PacketBombState.py
+++ b/source/network/packet/PacketBombState.py
@@ -11,6 +11,8 @@ class PacketBombState(Packet):
     position: Point2D = field()
     bomb_state: BombState = field()
 
+    packet_size: int = 3
+
     def to_bytes(self):
         x, y = self.position
 
@@ -29,7 +31,3 @@ class PacketBombState(Packet):
             ),
             bomb_state=BombState.from_bytes(data[2:3])
         )
-
-    @classmethod
-    def from_connection(cls, connection: socket.socket) -> "PacketBombState":
-        return cls.from_bytes(connection.recv(3))
diff --git a/source/network/packet/PacketChat.py b/source/network/packet/PacketChat.py
index ba593bd..bb03c74 100644
--- a/source/network/packet/PacketChat.py
+++ b/source/network/packet/PacketChat.py
@@ -8,13 +8,11 @@ from source.network.packet.abc import Packet
 class PacketChat(Packet):
     message: str = field()
 
+    packet_size: int = 256
+
     def to_bytes(self):
         return self.message.encode("utf-8")
 
     @classmethod
     def from_bytes(cls, data: bytes):
         return cls(message=data.decode("utf-8"))
-
-    @classmethod
-    def from_connection(cls, connection: socket.socket) -> "PacketChat":
-        return cls.from_bytes(connection.recv(256))
\ No newline at end of file
diff --git a/source/network/packet/abc/Packet.py b/source/network/packet/abc/Packet.py
index e22079c..61fd750 100644
--- a/source/network/packet/abc/Packet.py
+++ b/source/network/packet/abc/Packet.py
@@ -5,19 +5,13 @@ from typing import Type, Optional
 
 class Packet(ABC):
     packed_header: bytes
+    packet_size: int
     packet_id: int = 0
 
     def __init_subclass__(cls, **kwargs):
         cls.packet_header = Packet.packet_id.to_bytes(1, "big")
         Packet.packet_id = Packet.packet_id + 1
 
-    @classmethod
-    def cls_from_header(cls, packet_header: bytes) -> Type["Packet"]:
-        return next(filter(
-            lambda subcls: subcls.packet_header == packet_header,
-            cls.__subclasses__()
-        ))
-
     @abstractmethod
     def to_bytes(self) -> bytes:
         pass
@@ -27,16 +21,24 @@ class Packet(ABC):
     def from_bytes(cls, data: bytes) -> "Packet":
         pass
 
+    @classmethod
+    def cls_from_header(cls, packet_header: bytes) -> Type["Packet"]:
+        return next(filter(
+            lambda subcls: subcls.packet_header == packet_header,
+            cls.__subclasses__()
+        ))
+
     def send_connection(self, connection: socket.socket) -> None:
         connection.send(self.packet_header)
         connection.send(self.to_bytes())
 
     @classmethod
-    def from_connection(cls, connection: socket.socket) -> Optional[Type["Packet"]]:
+    def from_connection(cls, connection: socket.socket) -> Optional["Packet"]:
         packet_header: Optional[bytes] = None
         try: packet_header = connection.recv(1)
         except socket.timeout: pass
 
-        if not packet_header: return None
+        if not packet_header: return None  # si le header du packet est invalide, ignore
+        subcls = cls.cls_from_header(packet_header)
 
-        return cls.cls_from_header(packet_header).from_connection(connection)
+        return subcls.from_bytes(connection.recv(subcls.packet_size))