Commit Graph

193 Commits

Author SHA1 Message Date
João "Pisco" Fernandes 76badfa01b TUN-8236: Add write timeout to quic and tcp connections
## 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.
2024-02-15 17:54:52 +00:00
Chung-Ting 8068cdebb6 TUN-8006: Update quic-go to latest upstream 2023-12-04 17:09:40 +00:00
João Oliveirinha fc0ecf4185 TUN-7776: Remove warp-routing flag from cloudflared 2023-09-18 10:02:56 +01:00
Devin Carr b500e556bf TUN-7590: Remove usages of ioutil 2023-07-17 19:08:38 +00:00
Sudarsan Reddy 39847a70f2 TUN-7558: Flush on Writes for StreamBasedOriginProxy
In the streambased origin proxy flow (example ssh over access), there is
a chance when we do not flush on http.ResponseWriter writes. This PR
guarantees that the response writer passed to proxy stream has a flusher
embedded after writes. This means we write much more often back to the
ResponseWriter and are not waiting. Note, this is only something we do
when proxyHTTP-ing to a StreamBasedOriginProxy because we do not want to
have situations where we are not sending information that is needed by
the other side (eyeball).
2023-07-06 14:22:29 +00:00
Devin Carr b243602d1c TUN-7550: Add pprof endpoint to management service 2023-07-05 20:29:00 +00:00
Sudarsan Reddy 1abd22ef0a TUN-7480: Added a timeout for unregisterUDP.
I deliberately kept this as an unregistertimeout because that was the
intent. In the future we could change this to a UDPConnConfig if we want
to pass multiple values here.

The idea of this PR is simply to add a configurable unregister UDP
timeout.
2023-06-20 06:20:09 +00:00
João Oliveirinha 9c6fbfca18 TUN-7471: Fixes cloudflared not closing the quic stream on unregister UDP session
This code was leaking streams because it wasn't closing the quic stream
after unregistering from the edge.
2023-06-15 10:52:32 +01:00
Devin Carr 9426b60308 TUN-7227: Migrate to devincarr/quic-go
The lucas-clemente/quic-go package moved namespaces and our branch
went stale, this new fork provides support for the new quic-go repo
and applies the max datagram frame size change.

Until the max datagram frame size support gets upstreamed into quic-go,
this can be used to unblock go 1.20 support as the old
lucas-clemente/quic-go will not get go 1.20 support.
2023-05-10 19:44:15 +00:00
Devin Carr 0b5b9b8297 TUN-7130: Categorize UDP logs for streaming logs 2023-04-18 20:49:36 +00:00
Devin Carr 991f01fe34 TUN-7131: Add cloudflared log event to connection messages and enable streaming logs 2023-04-12 14:41:11 -07:00
Devin Carr 87f81cc57c TUN-7324: Add http.Hijacker to connection.ResponseWriter
Allows connection.ResponseWriter implemenations to be Hijacked to properly
handle WebSocket connection downgrades from proper HTTP requests.
2023-03-29 09:21:19 -07:00
Devin Carr be64362fdb TUN-7124: Add intercept ingress rule for management requests 2023-03-21 11:42:25 -07:00
Devin Carr bf3136debb TUN-7253: Adopt http.ResponseWriter for connection.ResponseWriter 2023-03-08 09:56:47 -08:00
Devin Carr 27f88ae209 TUN-7252: Remove h2mux connection 2023-03-07 13:51:37 -08:00
iBug fed60ae4c3
GH-352: Add Tunnel CLI option "edge-bind-address" ()
* Add Tunnel CLI option "edge-bind-address"
2023-02-28 16:11:42 +00:00
João Oliveirinha 68ef4ab2a8 TUN-7197: Add connIndex tag to debug messages of incoming requests 2023-02-22 16:08:24 +00:00
Devin Carr ea6fe121f8 TUN-7167: Respect protocol overrides with --token
Previously, if run with both `--protocol` and `--token` the protocol
would be incorrectly overridden to QUIC.
2023-02-08 11:03:04 -08:00
Devin Carr 8cf2d319ca TUN-6938: Provide QUIC as first in protocol list 2023-02-06 20:05:48 -08:00
Devin Carr 0f95f8bae5 TUN-6938: Force h2mux protocol to http2 for named tunnels
Going forward, the only protocols supported will be QUIC and HTTP2,
defaulting to QUIC for "auto". Selecting h2mux protocol will be forcibly
upgraded to http2 internally.
2023-02-06 11:06:02 -08:00
Devin Carr ae46af9236 TUN-7065: Remove classic tunnel creation 2023-02-06 18:19:22 +00:00
Devin Carr bd046677e5 TUN-7158: Correct TCP tracing propagation
Previously QUIC would send TCP tracing response header that was empty regardless if prompted from origintunneld.
2023-02-03 18:01:27 -08:00
João Oliveirinha 62dcb8a1d1 Revert "TUN-7065: Remove classic tunnel creation"
This reverts commit c24f275981.
2023-02-01 14:01:59 +00:00
Devin Carr c24f275981 TUN-7065: Remove classic tunnel creation 2023-01-31 22:35:28 +00:00
João Oliveirinha 513855df5c TUN-7073: Fix propagating of bad stream request from origin to downstream
This changes fixes a bug where cloudflared was not propagating errors
when proxying the body of an HTTP request.

In a situation where we already sent HTTP status code, the eyeball would
see the request as sucessfully when in fact it wasn't.

To solve this, we need to guarantee that we produce HTTP RST_STREAM
frames.
This change was applied to both http2 and quic transports.
2023-01-23 13:00:58 +00:00
Devin Carr 887e486a63 TUN-7057: Remove dependency github.com/gorilla/mux 2022-12-24 21:05:51 -07:00
João Oliveirinha 64f15d9992 TUN-6981: We should close UDP socket if failed to connecto to edge 2022-11-29 15:13:34 +00:00
Sudarsan Reddy 9339bb9485 TUN-6929: Use same protocol for other connections as first one
This PR changes protocol initialization of the other N connections to be
the same as the one we know the initial tunnel connected with. This is
so we homogenize connections and not lead to some connections being
QUIC-able and the others not.

There's also an improvement to the connection registered log so we know
what protocol every individual connection connected with from the
cloudflared side.
2022-11-17 10:28:04 +00:00
cthuang 60a12fcb27 TUN-6864: Don't reuse port in quic unit tests 2022-10-18 20:29:59 +00:00
cthuang 495f9fb8bd TUN-6856: Refactor to lay foundation for tracing ICMP
Remove send and return methods from Funnel interface. Users of Funnel can provide their own send and return methods without wrapper to comply with the interface.
Move packet router to ingress package to avoid circular dependency
2022-10-17 19:48:35 +01:00
cthuang 225c344ceb TUN-6855: Add DatagramV2Type for IP packet with trace and tracing spans 2022-10-17 19:45:01 +01:00
João Oliveirinha b01006fe46 TUN-6853: Reuse source port when connecting to the edge for quic connections 2022-10-13 11:50:44 +01:00
cthuang 49438f30f5 TUN-6813: Only proxy ICMP packets when warp-routing is enabled 2022-09-30 19:08:12 +01:00
cthuang eacc8c648d TUN-6812: Drop IP packets if ICMP proxy is not initialized 2022-09-30 14:10:32 +00:00
cthuang be0305ec58 TUN-6741: ICMP proxy tries to listen on specific IPv4 & IPv6 when possible
If it cannot determine the correct interface IP, it will fallback to all interfaces.
This commit also introduces the icmpv4-src and icmpv6-src flags
2022-09-26 11:37:08 +01:00
cthuang 8a53c1aa1d TUN-6592: Decrement TTL and return ICMP time exceed if it's 0 2022-09-15 17:53:26 +01:00
Devin Carr f5f3e6a453 TUN-6689: Utilize new RegisterUDPSession to begin tracing 2022-09-13 14:56:08 +00:00
cthuang 2ffff0687b TUN-6696: Refactor flow into funnel and close idle funnels
A funnel is an abstraction for 1 source to many destinations.
As part of this refactoring, shared logic between Darwin and Linux are moved into icmp_posix
2022-09-09 13:06:00 +01:00
Devin Carr e380333520 TUN-6688: Update RegisterUdpSession capnproto to include trace context 2022-09-08 21:50:58 +00:00
Bas Westerbaan 11cbff4ff7 RTG-1339 Support post-quantum hybrid key exchange
Func spec: https://wiki.cfops.it/x/ZcBKHw
2022-09-07 19:32:53 +00:00
Nuno Diegues 7a19798682 TUN-6740: Detect no UDP packets allowed and fallback from QUIC in that case 2022-09-07 16:32:15 +00:00
Devin Carr af6bf5c4e5 TUN-6704: Honor protocol flag when edge discovery is unreachable 2022-08-26 15:31:19 +00:00
cthuang 59f5b0df83 TUN-6530: Implement ICMPv4 proxy
This proxy uses unprivileged datagram-oriented endpoint and is shared by all quic connections
2022-08-24 17:33:03 +01:00
João Oliveirinha f6bd4aa039 TUN-6676: Add suport for trailers in http2 connections 2022-08-24 15:16:30 +00:00
cthuang d2bc15e224 TUN-6667: DatagramMuxerV2 provides a method to receive RawPacket 2022-08-24 14:56:08 +01:00
cthuang bad2e8e812 TUN-6666: Define packet package
This package defines IP and ICMP packet, decoders, encoder and flow
2022-08-24 11:36:57 +01:00
João Oliveirinha 20ed7557f9 TUN-6679: Allow client side of quic request to close body
In a previous commit, we fixed a bug where the client roundtrip code
could close the request body, which in fact would be the quic.Stream,
thus closing the write-side.
The way that was fixed, prevented the client roundtrip code from closing
also read-side (the body).

This fixes that, by allowing close to only close the read side, which
will guarantee that any subsquent will fail with an error or EOF it
occurred before the close.
2022-08-23 10:43:45 +01:00
Devin Carr a97673e8b9 TUN-6575: Consume cf-trace-id from incoming http2 TCP requests 2022-08-16 15:30:44 +00:00
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
cthuang 278df5478a TUN-6584: Define QUIC datagram v2 format to support proxying IP packets 2022-08-12 08:06:56 +00:00