Do not reset TCP connections when using a raw socket

Author: KingCol13

src/iface/interface/tcp.rs

@@ -1,6 +1,6 @@
 use super::*;
 
-use crate::socket::tcp::Socket;
+use crate::{socket::raw::Socket as RawSocket, socket::tcp::Socket};
 
 impl InterfaceInner {
     pub(crate) fn process_tcp<'frame>(
@@ -29,6 +29,18 @@ impl InterfaceInner {
             }
         }
 
+        #[cfg(feature = "socket-raw")]
+        for raw_socket in sockets
+            .items_mut()
+            .filter_map(|i| RawSocket::downcast_mut(&mut i.socket))
+        {
+            // Stop if we find a raw socket accepting TCP.
+            if raw_socket.accepts(&ip_repr) {
+                // Payload will be processed by raw socket separately.
+                return None;
+            }
+        }
+
         if tcp_repr.control == TcpControl::Rst
             || ip_repr.dst_addr().is_unspecified()
             || ip_repr.src_addr().is_unspecified()