BindToDevice binds a socket to the specified interface.

GetTransparentDNSResolverIPv4Address returns the static IPv4 address to use as a DNS resolver when transparent DNS rewriting is desired.

GetTransparentDNSResolverIPv6Address returns the static IPv6 address to use as a DNS resolver when transparent DNS rewriting is desired.

NewChannel initializes a new Channel.

NewClient initializes a new Client.

NewClientDevice creates and configures a new client tun device.

NewClientDeviceFromFD wraps an existing tun device.

NewNonblockingIO creates a new NonblockingIO with the specified file descriptor, which is duplicated and set to nonblocking and close-on-exec.

NewPacketQueue creates a new PacketQueue.

NewServer initializes a server.

NewServerDevice creates and configures a new server tun device.

OpenTunDevice opens a file for performing device I/O with either a specified tun device, or a new tun device (when name is "").

Channel manages packet transport over a communications channel.

Client is a packet tunnel client.

ClientConfig specifies the configuration of a packet tunnel client.

Device manages a tun device.

NonblockingIO provides interruptible I/O for non-pollable and/or foreign file descriptors that can't use the netpoller available in os.OpenFile as of Go 1.9.

PacketQueue is a fixed-size, preallocated queue of packets.

Server is a packet tunnel server.

ServerConfig specifies the configuration of a packet tunnel server.

FlowActivityUpdater defines an interface for receiving updates for flow activity.

AllowedPortChecker is a function which returns true when it is permitted to relay packets to the specified upstream IP address and/or port.

FlowActivityUpdaterMaker is a function which returns a list of appropriate updaters for a new flow to the specified upstream hostname (if known -- may be ""), and IP address.

MetricsUpdater is a function which receives a checkpoint summary of application bytes transferred through a packet tunnel.