| commit | 3de8da15996dc57aaa4c891c66f3f67ce7eaefae | [log] [tgz] |
|---|---|---|
| author | Chris Kuiper <ckuiper@google.com> | Tue Sep 24 13:18:19 2019 -0700 |
| committer | gVisor bot <gvisor-bot@google.com> | Tue Sep 24 13:20:42 2019 -0700 |
| tree | 71ceff57cde20c4dc2325973ae351fe06ca9638a | |
| parent | 31f8eaa34db03a4e4fd470b516c14dde13f6f4a7 [diff] |
Return only primary addresses in Stack.NICInfo() Non-primary addresses are used for endpoints created to accept multicast and broadcast packets, as well as "helper" endpoints (0.0.0.0) that allow sending packets when no proper address has been assigned yet (e.g., for DHCP). These addresses are not real addresses from a user point of view and should not be part of the NICInfo() value. Also see b/127321246 for more info. This switches NICInfo() to call a new NIC.PrimaryAddresses() function. To still allow an option to get all addresses (mostly for testing) I added Stack.GetAllAddresses() and NIC.AllAddresses(). In addition, the return value for GetMainNICAddress() was changed for the case where the NIC has no primary address. Instead of returning an error here, it now returns an empty AddressWithPrefix() value. The rational for this change is that it is a valid case for a NIC to have no primary addresses. Lastly, I refactored the code based on the new additions. PiperOrigin-RevId: 270971764
Netstack is a network stack written in Go.
Try it out on Linux by installing the tun_tcp_echo demo:
go install github.com/google/netstack/tcpip/sample/tun_tcp_echo
Create a TUN device with:
[sudo] ip tuntap add user <username> mode tun <device-name> [sudo] ip link set <device-name> up [sudo] ip addr add <ipv4-address>/<mask-length> dev <device-name>
Then run with:
tun_tcp_echo <device-name> <ipv4-address> <port>
Please see CONTRIBUTING.md for more details.
Netstack is primarily developed as part of gVisor and any issues/bugs should be filed against the gVisor repository as this repo is not actively monitored for bug reports.
This is not an official Google product (experimental or otherwise), it is just code that happens to be owned by Google.