A new ICMPResponder interface is introduced to provide different
implementations of how the ICMP flows should return to the QUIC
connection muxer.
Improves usages of netip.AddrPort to leverage the embedded zone
field for IPv6 addresses.
Closes TUN-8640
Implements the endpoint that retrieves the configuration of a running instance.
The configuration consists in a map of cli flag to the provided value along with the uid that of the user that started the process
## Summary
The new endpoint returns the current information to be used when calling the diagnostic procedure.
This also adds:
- add indexed connection info and method to extract active connections from connTracker
- add edge address to Event struct and conn tracker
- remove unnecessary event send
- add tunnel configuration handler
- adjust cmd and metrics to create diagnostic server
Closes TUN-8728
## Summary
This PR will add a new endpoint, "diag/system" to the metrics server that collects system information from different operating systems.
Closes TUN-8731
## Summary
Update how metrics server binds to a listener by using a known set of ports whenever the default address is used with the fallback to a random port in case all address are already in use. The default address changes at compile time in order to bind to a different default address when the final deliverable is a docker image.
Refactor ReadyServer tests.
Closes TUN-8737
Revert "TUN-8621: Fix cloudflared version in change notes."
Revert "PPIP-2310: Update quick tunnel disclaimer"
Revert "TUN-8621: Prevent QUIC connection from closing before grace period after unregistering"
Revert "TUN-8484: Print response when QuickTunnel can't be unmarshalled"
Revert "TUN-8592: Use metadata from the edge to determine if request body is empty for QUIC transport"
Since legacy tunnels have been removed for a while now, we can remove
many of the capnp rpc interfaces that are no longer leveraged by the
legacy tunnel registration and authentication mechanisms.
Combines the tunnelrpc and quic/schema capnp files into the same module.
To help reduce future issues with capnp id generation, capnpids are
provided in the capnp files from the existing capnp struct ids generated
in the go files.
Reduces the overall interface of the Capnp methods to the rest of
the code by providing an interface that will handle the quic protocol
selection.
Introduces a new `rpc-timeout` config that will allow all of the
SessionManager and ConfigurationManager RPC requests to have a timeout.
The timeout for these values is set to 5 seconds as non of these operations
for the managers should take a long time to complete.
Removed the RPC-specific logger as it never provided good debugging value
as the RPC method names were not visible in the logs.
This commit makes the remote diagnostics enabled by default, which is
a useful feature when debugging cloudflared issues without manual intervention from users.
Users can still opt-out by disabling the feature flag.
## Summary
To prevent bad eyeballs and severs to be able to exhaust the quic
control flows we are adding the possibility of having a timeout
for a write operation to be acknowledged. This will prevent hanging
connections from exhausting the quic control flows, creating a DDoS.
When embedding the tunnel command inside another CLI, it
became difficult to test shutdown behavior due to this leaking
tunnel. By using the command context, we're able to shutdown
gracefully.
This changes guarantees that the coommand to report rule matches when
testing local config reports the rule number using the 0-based indexing.
This is to be consistent with the 0-based indexing on the log lines when
proxying requests.
## Summary
Previously the force flag in the tunnel delete command was only explicitly deleting the
connections of a tunnel. Therefore, we are changing it to use the cascade query parameter
supported by the API. That parameter will delegate to the server the deletion of the tunnel
dependencies implicitly instead of the client doing it explicitly. This means that not only
the connections will get deleted, but also the tunnel routes, ensuring that no dependencies
are left without a non-deleted tunnel.
This commits makes sure that cloudflared starts using the new API
endpoints for managing routes.
Additionally, the delete route operation still allows deleting by CIDR
and VNet but it is being marked as deprecated in favor of specifying the
route ID.
The goal of this change is to make it simpler for the user to delete
routes without specifying Vnet.
This commit implements the option to disable PTMU discovery for QUIC
connections.
QUIC finds the PMTU during startup by increasing Ping packet frames
until Ping responses are not received anymore, and it seems to stick
with that PMTU forever.
This is no problem if the PTMU doesn't change over time, but if it does
it may case packet drops.
We add this hidden flag for debugging purposes in such situations as a
quick way to validate if problems that are being seen can be solved by
reducing the packet size to the edge.
Note however, that this option may impact UDP proxying since we expect
being able to send UDP packets of 1280 bytes over QUIC.
So, this option should not be used when tunnel is being used for UDP
proxying.
With the new flag --management-diagnostics (an opt-in flag)
cloudflared's will be able to report additional diagnostic information
over the management.argotunnel.com request path.
Additions include the /metrics prometheus endpoint; which is already
bound to a local port via --metrics.
/debug/pprof/(goroutine|heap) are also provided to allow for remotely
retrieving heap information from a running cloudflared connector.
Devin Carr
Luis Neto
Mads Jon Nielsen
GoncaloGarcia
chungthuang
João Oliveirinha
João "Pisco" Fernandes
Honahuku
Kyle Carberry