Commit Graph

33 Commits

Author SHA1 Message Date
Sudarsan Reddy 99f39225f1 TUN-6617: Dont fallback to http2 if QUIC conn was successful.
cloudflared falls back aggressively to HTTP/2 protocol if a connection
attempt with QUIC failed. This was done to ensure that machines with UDP
egress disabled did not stop clients from connecting to the cloudlfare
edge. This PR improves on that experience by having cloudflared remember
if a QUIC connection was successful which implies UDP egress works. In
this case, cloudflared does not fallback to HTTP/2 and keeps trying to
connect to the edge with QUIC.
2022-08-12 08:40:03 +00:00
Sudarsan Reddy d3fd581b7b Revert "TUN-6617: Dont fallback to http2 if QUIC conn was successful."
This reverts commit 679a89c7df.
2022-08-11 20:27:22 +01:00
Sudarsan Reddy 679a89c7df TUN-6617: Dont fallback to http2 if QUIC conn was successful.
cloudflared falls back aggressively to HTTP/2 protocol if a connection
attempt with QUIC failed. This was done to ensure that machines with UDP
egress disabled did not stop clients from connecting to the cloudlfare
edge. This PR improves on that experience by having cloudflared remember
if a QUIC connection was successful which implies UDP egress works. In
this case, cloudflared does not fallback to HTTP/2 and keeps trying to
connect to the edge with QUIC.
2022-08-11 17:55:10 +00:00
Sudarsan Reddy 065d8355c5 TUN-6637: Upgrade quic-go 2022-08-10 14:13:19 +00:00
Devin Carr b9cba7f2ae TUN-6576: Consume cf-trace-id from incoming TCP requests to create root span
(cherry picked from commit f48a7cd3dd)
2022-08-02 14:56:31 -07:00
João Oliveirinha 7f1c890a82 Revert "TUN-6576: Consume cf-trace-id from incoming TCP requests to create root span"
This reverts commit f48a7cd3dd.
2022-08-02 11:13:24 +01:00
Devin Carr f48a7cd3dd TUN-6576: Consume cf-trace-id from incoming TCP requests to create root span 2022-08-01 20:22:39 +00:00
Igor Postelnik 1733fe8c65 TUN-6517: Use QUIC stream context while proxying HTTP requests and TCP connections 2022-07-07 18:06:57 -05:00
Nuno Diegues 475939a77f TUN-6191: Update quic-go to v0.27.1 and with custom patch to allow keep alive period to be configurable
The idle period is set to 5sec.

We now also ping every second since last activity.
This makes the quic.Connection less prone to being closed with
no network activity, since we send multiple pings per idle
period, and thus a single packet loss cannot cause the problem.
2022-06-07 12:25:18 +01:00
João Oliveirinha 99d4e48656 TUN-6016: Push local managed tunnels configuration to the edge 2022-05-06 15:43:24 +00:00
Devin Carr def8f57dbc TUN-5989: Add in-memory otlp exporter 2022-04-11 19:38:01 +00:00
Nuno Diegues 3aebaaad01 TUN-5836: QUIC transport no longer sets body to nil in any condition
Setting the body to nil was rendering cloudflared to crashing with
a SIGSEGV in the odd case where the hostname accessed maps to a
TCP origin (e.g. SSH/RDP/...) but the eyeball sends a plain HTTP
request that does not go through cloudflared access (thus not wrapped
in websocket as it should).

Instead, QUIC transport now sets http.noBody in that condition, which
deals with the situation gracefully.
2022-03-07 11:39:07 +00:00
cthuang d68ff390ca TUN-5698: Make ingress rules and warp routing dynamically configurable 2022-02-16 09:38:28 +00:00
cthuang e22422aafb TUN-5749: Refactor cloudflared to pave way for reconfigurable ingress
- Split origin into supervisor and proxy packages
- Create configManager to handle dynamic config
2022-02-14 15:37:09 +00:00
cthuang db01127191 TUN-5184: Make sure outstanding websocket write is finished, and no more writes after shutdown 2022-02-10 09:43:52 +00:00
cthuang d07d24e5a2 TUN-5695: Define RPC method to update configuration 2022-02-03 15:05:46 +00:00
Nuno Diegues ed2bac026d TUN-5621: Correctly manage QUIC stream closing
Until this PR, we were naively closing the quic.Stream whenever
the callstack for handling the request (HTTP or TCP) finished.
However, our proxy handler may still be reading or writing from
the quic.Stream at that point, because we return the callstack if
either side finishes, but not necessarily both.

This is a problem for quic-go library because quic.Stream#Close
cannot be called concurrently with quic.Stream#Write

Furthermore, we also noticed that quic.Stream#Close does nothing
to do receiving stream (since, underneath, quic.Stream has 2 streams,
1 for each direction), thus leaking memory, as explained in:
https://github.com/lucas-clemente/quic-go/issues/3322

This PR addresses both problems by wrapping the quic.Stream that
is passed down to the proxying logic and handle all these concerns.
2022-02-01 22:01:57 +00:00
cthuang 6fa58aadba TUN-5623: Configure quic max datagram frame size to 1350 bytes for none Windows platforms 2022-01-11 14:55:43 +00:00
Nuno Diegues 1086d5ede5 TUN-5204: Unregister QUIC transports on disconnect
This adds various bug fixes when investigating why QUIC transports were
not being unregistered when they should (and only when the graceful shutdown
started).

Most of these bug fixes are making the QUIC transport implementation closer
to its HTTP2 counterpart:
 - ServeControlStream is now a blocking function (it's up to the transport to handle that)
 - QUIC transport then handles the control plane as part of its Serve, thus waiting for it on shutdown
 - QUIC transport now returns "non recoverable" for connections with similar semantics to HTTP2 and H2mux
 - QUIC transport no longer has a loop around its Serve logic that retries connections on its own (that logic is upstream)
2022-01-06 10:08:38 +00:00
Nuno Diegues 628545d229 TUN-5600: Close QUIC transports as soon as possible while respecting graceful shutdown
This does a few fixes to make sure that the QUICConnection returns from
Serve when the context is cancelled.

QUIC transport now behaves like other transports: closes as soon as there
is no traffic, or at most by grace-period. Note that we do not wait for
UDP traffic since that's connectionless by design.
2022-01-06 08:59:53 +00:00
cthuang ebae7a7024 TUN-5494: Send a RPC with terminate reason to edge if the session is closed locally 2021-12-21 09:52:39 +00:00
cthuang dd32dc1364 TUN-5299: Send/receive QUIC datagram from edge and proxy to origin as UDP 2021-12-06 16:37:09 +00:00
cthuang fc2333c934 TUN-5300: Define RPC to register UDP sessions 2021-12-06 16:37:09 +00:00
Nuno Diegues 573d410606 Revert "TUN-5184: Make sure outstanding websocket write is finished, and no more writes after shutdown"
This reverts commit f8fbbcd806.
2021-10-25 19:51:52 +01:00
cthuang f8fbbcd806 TUN-5184: Make sure outstanding websocket write is finished, and no more writes after shutdown 2021-10-25 08:27:40 +00:00
cthuang 2ce11a20c4 TUN-5287: Fix misuse of wait group in TestQUICServer that caused the test to exit immediately 2021-10-22 13:40:51 +00:00
Sudarsan Reddy 7059ef8e13 TUN-5195: Do not set empty body if not applicable
Go's client defaults to chunked encoding after a 200ms delay if the following cases are true:
  * the request body blocks
  * the content length is not set (or set to -1)
  * the method doesn't usually have a body (GET, HEAD, DELETE, ...)
  * there is no transfer-encoding=chunked already set.
So for non websocket requests, if transfer-encoding isn't chunked and content length is 0, we dont set a request body.
2021-10-07 15:47:27 +01:00
Sudarsan Reddy 470a85e65d TUN-5160: Set request.ContentLength when this value is in request header 2021-09-27 14:12:11 +01:00
Sudarsan Reddy 27e1277a3b TUN-5142: Add asynchronous servecontrolstream for QUIC
ServeControlStream accidentally became non-blocking in the last quic
change causing stream to not be returned until a SIGTERM was received.
This change makes ServeControlStream be non-blocking for QUIC streams.
2021-09-24 10:00:43 +00:00
Sudarsan Reddy fd14bf440b TUN-5118: Quic connection now detects duplicate connections similar to http2 2021-09-21 06:30:09 +00:00
Sudarsan Reddy 12ad264eb3 TUN-4866: Add Control Stream for QUIC
This commit adds support to Register and Unregister Connections via RPC
on the QUIC transport protocol
2021-08-17 14:50:32 +00:00
Sudarsan Reddy e49a7a4389 TUN-4597: Added HTTPProxy for QUIC 2021-08-04 12:50:18 +00:00
Sudarsan Reddy ed024d0741 TUN-4597: Add a QUIC server skeleton
- Added a QUIC server to accept streams
- Unit test for this server also tests ALPN
- Temporary echo capability for HTTP ConnectionType
2021-08-03 10:03:47 +00:00