13 Commits (44baa3463f32ba770f5a8e93ba8ab98deefca656)

Author	SHA1	Message	Date
David Anderson	45578b47f3	tstest/natlab: refactor PacketHandler into a larger interface. ... The new interface lets implementors more precisely distinguish local traffic from forwarded traffic, and applies different forwarding logic within Machines for each type. This allows Machines to be packet forwarders, which didn't quite work with the implementation of Inject. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	23123907c0	tstest/natlab: add a configurable SNAT44 translator. ... This lets us implement the most common kinds of NAT in the wild. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	39ecb37fd6	tstest/natlab: support different firewall selectivities. ... Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	b3d65ba943	tstest/natlab: refactor, expose a Packet type. ... HandlePacket and Inject now receive/take Packets. This is a handy container for the packet, and the attached Trace method can be used to print traces from custom packet handlers that integrate nicely with natlab's internal traces. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	5eedbcedd1	tstest/natlab: add a stateful firewall. ... The firewall provides a ProcessPacket handler, and implements an address-and-port endpoint dependent firewall that allows all traffic to egress from the trusted interface, and only allows inbound traffic if corresponding outbound traffic was previously seen. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	0ed9f62ed0	tstest/natlab: provide inbound interface to HandlePacket. ... Requires a bunch of refactoring so that Networks only ever refer to Interfaces that have been attached to them, and Interfaces know about both their Network and Machine. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	6c74065053	wgengine/magicsock, tstest/natlab: start hooking up natlab to magicsock ... Also adds ephemeral port support to natlab. Work in progress. Pairing with @danderson.	4 years ago
David Anderson	0aea087766	tstest/natlab: add PacketHandler and Inject. ... Together, they can be used to plug custom packet processors into Machines. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	73db7e99ab	tstest/natlab: make Machine constructible directly. ... This is a prelude to adding more fields, which would otherwise become more unnamed function params. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	c53b154171	tstest/natlab: use &Network in test. ... Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	1d4f9852a7	tstest/natlab: correctly handle dual-stacked PacketConns. ... Adds a test with multiple networks, one of which is v4-only. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	f2e5da916a	tstest/natlab: allow sensible default construction of networks. ... Add a test for LAN->LAN traffic. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	14b4213c17	tstest/natlab: add missing tests from earlier commits ... Now you can actually see that packet delivery works. Pairing with @danderson	4 years ago