8 Commits

Include renames

Author	SHA1	Message	Date
João "Pisco" Fernandes	4eb0f8ce5f	TUN-8861: Rename Session Limiter to Flow Limiter ... ## Summary Session is the concept used for UDP flows. Therefore, to make the session limiter ambiguous for both TCP and UDP, this commit renames it to flow limiter. Closes TUN-8861	2025-01-20 06:33:40 -08:00
João "Pisco" Fernandes	bf4954e96a	TUN-8861: Add session limiter to UDP session manager ... ## Summary In order to make cloudflared behavior more predictable and prevent an exhaustion of resources, we have decided to add session limits that can be configured by the user. This first commit introduces the session limiter and adds it to the UDP handling path. For now the limiter is set to run only in unlimited mode.	2025-01-20 02:52:32 -08:00
Devin Carr	588ab7ebaa	TUN-8640: Add ICMP support for datagram V3 ... Closes TUN-8640	2024-12-09 07:23:11 -08:00
Devin Carr	952622a965	TUN-8709: Add session migration for datagram v3 ... When a registration response from cloudflared gets lost on it's way back to the edge, the edge service will retry and send another registration request. Since cloudflared already has bound the local UDP socket for the provided request id, we want to re-send the registration response. There are three types of retries that the edge will send: 1. A retry from the same QUIC connection index; cloudflared will just respond back with a registration response and reset the idle timer for the session. 2. A retry from a different QUIC connection index; cloudflared will need to migrate the current session connection to this new QUIC connection and reset the idle timer for the session. 3. A retry to a different cloudflared connector; cloudflared will eventually time the session out since no further packets will arrive to the session at the original connector. Closes TUN-8709	2024-11-06 12:06:07 -08:00
Gonçalo Garcia	3d33f559b1	TUN-8641: Expose methods to simplify V3 Datagram parsing on the edge	2024-11-04 15:23:36 -08:00
Devin Carr	5891c0d955	TUN-8700: Add datagram v3 muxer ... The datagram muxer will wrap a QUIC Connection datagram read-writer operations to unmarshal datagrams from the connection to the origin with the session manager. Incoming datagram session registration operations will create new UDP sockets for sessions to proxy UDP packets between the edge and the origin. The muxer is also responsible for marshalling UDP packets and operations into datagrams for communication over the QUIC connection towards the edge. Closes TUN-8700	2024-11-04 11:20:35 -08:00
Devin Carr	6a6c890700	TUN-8667: Add datagram v3 session manager ... New session manager leverages similar functionality that was previously provided with datagram v2, with the distinct difference that the sessions are registered via QUIC Datagrams and unregistered via timeouts only; the sessions will no longer attempt to unregister sessions remotely with the edge service. The Session Manager is shared across all QUIC connections that cloudflared uses to connect to the edge (typically 4). This will help cloudflared be able to monitor all sessions across the connections and help correlate in the future if sessions migrate across connections. The UDP payload size is still limited to 1280 bytes across all OS's. Any UDP packet that provides a payload size of greater than 1280 will cause cloudflared to report (as it currently does) a log error and drop the packet. Closes TUN-8667	2024-10-31 14:05:15 -07:00
Devin Carr	abb3466c31	TUN-8638: Add datagram v3 serializers and deserializers ... Closes TUN-8638	2024-10-16 12:05:55 -07:00