BindToDevice binds a socket to the specified interface.

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.

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.

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.

AllowedDomainChecker is a function which returns true when it is permitted to resolve the specified domain name.

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

DNSQualityReporter is a function which receives a DNS quality report: whether a DNS request received a reponse, the elapsed time, and the resolver used.

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.