ban self-connections, in order to not try them again

src/bt_peer_connection.cpp

@@ -2775,6 +2775,7 @@ namespace libtorrent
 
 			if (pid == m_ses.get_peer_id())
 			{
+				if (peer_info_struct()) peer_info_struct()->banned = true;
 				disconnect("closing connection to ourself", 1);
 				return;
 			}
@@ -2791,6 +2792,7 @@ namespace libtorrent
 			// since it most likely is ourself then
 			if (pid == m_ses.get_peer_id())
 			{
+				if (peer_info_struct()) peer_info_struct()->banned = true;
 				disconnect("closing connection to ourself", 1);
 				return;
 			}

src/peer_connection.cpp

@@ -4173,6 +4173,7 @@ namespace libtorrent
 		{
 			// if the remote endpoint is the same as the local endpoint, we're connected
 			// to ourselves
+			if (m_peer_info) m_peer_info->banned = true;
 			disconnect("connected to ourselves", 1);
 			return;
 		}