Commit Graph

10 Commits

Author SHA1 Message Date
Devin Carr d779394748 TUN-8748: Migrated datagram V3 flows to use migrated context
Previously, during local flow migration the current connection context
was not part of the migration and would cause the flow to still be listening
on the connection context of the old connection (before the migration).
This meant that if a flow was migrated from connection 0 to
connection 1, and connection 0 goes away, the flow would be early
terminated incorrectly with the context lifetime of connection 0.

The new connection context is provided during migration of a flow
and will trigger the observe loop for the flow lifetime to be rebound
to this provided context.
Closes TUN-8748
2024-11-21 12:56:47 -08:00
chungthuang a26b2a0097
Merge pull request from pkillarjun/fuzzing
add: new go-fuzz targets
2024-11-18 09:53:12 -06:00
Devin Carr ab3dc5f8fa TUN-8701: Simplify flow registration logs for datagram v3
To help reduce the volume of logs during the happy path of flow registration, there will only be one log message reported when a flow is completed.

There are additional fields added to all flow log messages:
1. `src`: local address
2. `dst`: origin address
3. `durationMS`: capturing the total duration of the flow in milliseconds

Additional logs were added to capture when a flow was migrated or when cloudflared sent off a registration response retry.

Closes TUN-8701
2024-11-12 10:54:37 -08:00
Arjun 53c523444e add: new go-fuzz targets
Signed-off-by: Arjun <pkillarjun@protonmail.com>
2024-11-11 20:45:49 +05:30
Devin Carr 1f3e3045ad TUN-8701: Add metrics and adjust logs for datagram v3
Closes TUN-8701
2024-11-07 11:02:55 -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