Application code can call the tsnet s.CapturePcap(filename) method
to write all packets, sent and received, to a pcap file. The cleartext
packets are written, outside the Wireguard tunnel. This is expected
to be useful for debugging.
Updates https://github.com/tailscale/tailscale/issues/9707
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
Terminating traffic to IPs which are not the native IPs of the node requires
the netstack subsystem to intercept trafic to an IP it does not consider local.
This PR switches on such interception. In addition to supporting such termination,
this change will also enable exit nodes and subnet routers when running in
userspace mode.
DO NOT MERGE until 1.52 is cut.
Signed-off-by: Tom DNetto <tom@tailscale.com>
Updates: https://github.com/tailscale/corp/issues/15038
For the app connector use-case, it doesnt make sense to use listeners, because then you would
need to register thousands of listeners (for each proto/service/port combo) to handle ranges.
Instead, we plumb through the TCPHandlerForFlow abstraction, to avoid using the listeners
abstraction that would end up being a bit messy.
Signed-off-by: Tom DNetto <tom@tailscale.com>
Updates: https://github.com/tailscale/corp/issues/15038
Thanks to @qur and @eric for debugging!
Fixes#6973
Change-Id: Ib2cf8f030cf595cc73dd061c72e78ac19f5fae5d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This PR removes calls to ioutil library and replaces them
with their new locations in the io and os packages.
Fixes#9034
Updates #5210
Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>
This test was either fixed in the intermediate time or mis-flagged
during the #7876 triage, but is now passing.
Updates #7876
Signed-off-by: James Tucker <jftucker@gmail.com>
This test is not regularly passing on CI, but seems to pass reliably
locally. Needs deeper debugging.
Updates #7876
Signed-off-by: James Tucker <jftucker@gmail.com>
tsnet.Server.Close was calling listener.Close with the server mutex
held, but the listener close method tries to grab that mutex, resulting
in a deadlock.
Co-authored-by: David Crawshaw <crawshaw@tailscale.com>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Previously, it would accept all TCP connections and then close the ones
it did not care about. Make it only ever accept the connections that it
cares about.
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Add a DNS server which always responds as its own IP addresses.
Additionally add a tsnet TailscaleIPs() function to return the
IP addresses, both IPv4 and IPv6.
Updates https://github.com/tailscale/tailscale/issues/1748
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
Some languages do not give you any useful access to the sockets
underlying their networking packages. E.g. java.net.http.HttpClient
provides no official access to its dialing logic.
...but everyone supports proxies. So add a SOCKS5 proxy on the listener
we are already running.
(The function being revamped is very new,
I only added it in the last week and it wasn't part of any release,
so I believe it is fine to redo its function signature.)
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
No ListenPacket support yet, but Listen with a udp network type fit
easier into netstack's model to start.
Then added an example of using it to cmd/sniproxy with a little udp
:53 handler.
No tests in tsnet yet because we don't have support for dialing over
UDP in tsnet yet. When that's done, a new test can test both sides.
Updates #5871
Updates #1748
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is for use by LocalAPI clients written in other languages that
don't appear to be able to talk HTTP over a socket (e.g.
java.net.http.HttpClient).
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
Allow callers to verify that a net.Listener is a tsnet.listener by type
asserting against this Server method, as well as providing access to the
underlying Server.
This is initially being added to support the caddy integration in
caddyserver/caddy#5002.
Signed-off-by: Will Norris <will@tailscale.com>
Denton Gentry
Tom DNetto
Brad Fitzpatrick
Marwan Sulaiman
Charlotte Brandhorst-Satzkorn
KevinLiang10
James Tucker
Maisem Ali
David Crawshaw
Will Norris