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2020-04-15Add tests for segments outside the receive window.Eyal Soha
The tests are based on RFC 793 page 69. Updates #1607 PiperOrigin-RevId: 306768847
2020-04-15Refactor connections.go to make it easier to add new connection types.Eyal Soha
Rather than have a struct for the state of each type of connection, such as TCP/IPv4, UDP/IPv4, TCP/IPv6, etc, have a state for each layer, such as UDP, TCP, IPv4, IPv6. Those states can be composed into connections. Tested: Existing unit tests still pass/fail as expected. PiperOrigin-RevId: 306703180
2020-04-15Reset pending connections on listener closeMithun Iyer
Attempt to redeliver TCP segments that are enqueued into a closing TCP endpoint. This was being done for Established endpoints but not for those that are listening or performing connection handshake. Fixes #2417 PiperOrigin-RevId: 306598155
2020-04-14Test TCP should piggyback ACK in ESTAB stategVisor bot
TCP, in ESTABLISHED state, SHOULD piggyback acknowledgement with a segment being transmitted (whenever possible) without incurring undue delay PiperOrigin-RevId: 306474550
2020-04-13Add Sniffer.Drain() draining socket receive buffergVisor bot
Add Sniffer.Drain() which drains the socket's receive buffer by temporarily setting the socket to non-blocking, and receiving in a loop until EINTR, EWOULDBLOCK or EAGAIN. This method should be used when long periods of time elapses without receiving on the socket, because uninteresting packets may have piled up in the receive buffer, filling it up and causing packets critical to test operation to be dropped. PiperOrigin-RevId: 306380480
2020-04-10Test that RST is sent after ABORT in ESTABLISHED TCP state.Eyal Soha
PiperOrigin-RevId: 305879441
2020-04-08Return all packets when Expect fails.Eyal Soha
PiperOrigin-RevId: 305466309
2020-04-07Test TCP sender behavior against window shrinkinggVisor bot
RFC 1122 Section 3.7: A sending TCP MUST be robust against window shrinking, which may cause the "useable window" to become negative. PiperOrigin-RevId: 305377072
2020-03-31Test receiving multicast packets over UDPEyal Soha
PiperOrigin-RevId: 304098611
2020-03-19Add packetimpact tests to presubmit and CI testingEyal Soha
PiperOrigin-RevId: 301872161
2020-03-17Packetimpact in Go with c++ stubEyal Soha
PiperOrigin-RevId: 301382690
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