ships

package
v1.6.16 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Jul 23, 2024 License: GPL-3.0 Imports: 23 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	BaseMTU           = 1460 // 1500 with 40 bytes extra space for special cases.
	IPv4HeaderMTUSize = 20   // Without options, as not common.
	IPv6HeaderMTUSize = 40   // Without options, as not common.
	TCPHeaderMTUSize  = 60   // Maximum size with options.
	UDPHeaderMTUSize  = 8    // Has no options.
)

MTU Calculation Configuration.

Variables

View Source 
var (

	// DisplayHubID holds the Hub ID for displaying it on the info page.
	DisplayHubID string
)
View Source 
var ErrSunk = errors.New("ship sunk")

ErrSunk is returned when a ship sunk, ie. the connection was lost.

Functions

func EnableMasking 

func EnableMasking(salt []byte)

EnableMasking enables masking with the given salt.

func GetVirtualNetworkAddress 

func GetVirtualNetworkAddress(dstHubID string) net.IP

GetVirtualNetworkAddress returns the virtual network IP for the given Hub.

func GetVirtualNetworkConfig 

func GetVirtualNetworkConfig() *hub.VirtualNetworkConfig

GetVirtualNetworkConfig returns the virtual networking config.

func Protocols 

func Protocols() []string

Protocols returns a slice with all registered protocol names. The return slice must not be edited.

func Register 

func Register(protocol string, builder *Builder)

Register registers a new builder for a protocol.

func ServeInfoPage 

func ServeInfoPage(w http.ResponseWriter, r *http.Request)

ServeInfoPage serves the info page for the given request.

func SetVirtualNetworkConfig 

func SetVirtualNetworkConfig(config *hub.VirtualNetworkConfig)

SetVirtualNetworkConfig sets the virtual networking config.

Types

type Builder 

type Builder struct {
	LaunchShip    func(ctx context.Context, transport *hub.Transport, ip net.IP) (Ship, error)
	EstablishPier func(transport *hub.Transport, dockingRequests chan Ship) (Pier, error)
}

Builder is a factory that can build ships and piers of it's protocol.

func GetBuilder 

func GetBuilder(protocol string) *Builder

GetBuilder returns the builder for the given protocol, or nil if it does not exist.

type DockingRequest 

type DockingRequest struct {
	Pier Pier
	Ship Ship
	Err  error
}

DockingRequest is a uniform request that Piers emit when a new ship arrives.

type HTTPPier 

type HTTPPier struct {
	PierBase
	// contains filtered or unexported fields
}

HTTPPier is a pier that uses HTTP.

func (*HTTPPier) Abolish 

func (pier *HTTPPier) Abolish()

Abolish closes the underlying listener and cleans up any related resources.

func (*HTTPPier) ServeHTTP 

func (pier *HTTPPier) ServeHTTP(w http.ResponseWriter, r *http.Request)

type HTTPShip 

type HTTPShip struct {
	ShipBase
}

HTTPShip is a ship that uses HTTP.

type KCPPier 

type KCPPier struct {
	PierBase
}

KCPPier is a pier that uses KCP.

type KCPShip 

type KCPShip struct {
	ShipBase
}

KCPShip is a ship that uses KCP.

type Pier 

type Pier interface {
	// String returns a human readable informational summary about the ship.
	String() string

	// Transport returns the transport used for this ship.
	Transport() *hub.Transport

	// Abolish closes the underlying listener and cleans up any related resources.
	Abolish()
}

Pier represents a network connection listener.

func EstablishPier 

func EstablishPier(transport *hub.Transport, dockingRequests chan Ship) (Pier, error)

EstablishPier is shorthand function to get the transport's builder and establish a pier.

type PierBase 

type PierBase struct {
	// contains filtered or unexported fields
}

PierBase implements common functions to comply with the Pier interface.

func (*PierBase) Abolish 

func (pier *PierBase) Abolish()

Abolish closes the underlying listener and cleans up any related resources.

func (*PierBase) String 

func (pier *PierBase) String() string

String returns a human readable informational summary about the ship.

func (*PierBase) Transport 

func (pier *PierBase) Transport() *hub.Transport

Transport returns the transport used for this ship.

type Ship 

type Ship interface {
	// String returns a human readable informational summary about the ship.
	String() string

	// Transport returns the transport used for this ship.
	Transport() *hub.Transport

	// IsMine returns whether the ship was launched from here.
	IsMine() bool

	// IsSecure returns whether the ship provides transport security.
	IsSecure() bool

	// Public returns whether the ship is marked as public.
	Public() bool

	// MarkPublic marks the ship as public.
	MarkPublic()

	// LoadSize returns the recommended data size that should be handed to Load().
	// This value will be most likely somehow related to the connection's MTU.
	// Alternatively, using a multiple of LoadSize is also recommended.
	LoadSize() int

	// Load loads data into the ship - ie. sends the data via the connection.
	// Returns ErrSunk if the ship has already sunk earlier.
	Load(data []byte) error

	// UnloadTo unloads data from the ship - ie. receives data from the
	// connection - puts it into the buf. It returns the amount of data
	// written and an optional error.
	// Returns ErrSunk if the ship has already sunk earlier.
	UnloadTo(buf []byte) (n int, err error)

	// LocalAddr returns the underlying local net.Addr of the connection.
	LocalAddr() net.Addr

	// RemoteAddr returns the underlying remote net.Addr of the connection.
	RemoteAddr() net.Addr

	// Sink closes the underlying connection and cleans up any related resources.
	Sink()

	// MaskAddress masks the address, if enabled.
	MaskAddress(addr net.Addr) string
	// MaskIP masks an IP, if enabled.
	MaskIP(ip net.IP) string
	// Mask masks a value.
	Mask(value []byte) string
}

Ship represents a network layer connection.

func Launch 

func Launch(ctx context.Context, h *hub.Hub, transport *hub.Transport, ip net.IP) (Ship, error)

Launch launches a new ship to the given Hub.

type ShipBase 

type ShipBase struct {
	// contains filtered or unexported fields
}

ShipBase implements common functions to comply with the Ship interface.

func (*ShipBase) IsMine 

func (ship *ShipBase) IsMine() bool

IsMine returns whether the ship was launched from here.

func (*ShipBase) IsSecure 

func (ship *ShipBase) IsSecure() bool

IsSecure returns whether the ship provides transport security.

func (*ShipBase) Load 

func (ship *ShipBase) Load(data []byte) error

Load loads data into the ship - ie. sends the data via the connection. Returns ErrSunk if the ship has already sunk earlier.

func (*ShipBase) LoadSize 

func (ship *ShipBase) LoadSize() int

LoadSize returns the recommended data size that should be handed to Load(). This value will be most likely somehow related to the connection's MTU. Alternatively, using a multiple of LoadSize is also recommended.

func (*ShipBase) LocalAddr 

func (ship *ShipBase) LocalAddr() net.Addr

LocalAddr returns the underlying local net.Addr of the connection.

func (*ShipBase) MarkPublic 

func (ship *ShipBase) MarkPublic()

MarkPublic marks the ship as public.

func (*ShipBase) Mask 

func (ship *ShipBase) Mask(value []byte) string

Mask masks the given value.

func (*ShipBase) MaskAddress 

func (ship *ShipBase) MaskAddress(addr net.Addr) string

MaskAddress masks the given address if masking is enabled and the ship is not public.

func (*ShipBase) MaskIP 

func (ship *ShipBase) MaskIP(ip net.IP) string

MaskIP masks the given IP if masking is enabled and the ship is not public.

func (*ShipBase) Public 

func (ship *ShipBase) Public() bool

Public returns whether the ship is marked as public.

func (*ShipBase) RemoteAddr 

func (ship *ShipBase) RemoteAddr() net.Addr

RemoteAddr returns the underlying remote net.Addr of the connection.

func (*ShipBase) Sink 

func (ship *ShipBase) Sink()

Sink closes the underlying connection and cleans up any related resources.

func (*ShipBase) String 

func (ship *ShipBase) String() string

String returns a human readable informational summary about the ship.

func (*ShipBase) Transport 

func (ship *ShipBase) Transport() *hub.Transport

Transport returns the transport used for this ship.

func (*ShipBase) UnloadTo 

func (ship *ShipBase) UnloadTo(buf []byte) (n int, err error)

UnloadTo unloads data from the ship - ie. receives data from the connection - puts it into the buf. It returns the amount of data written and an optional error. Returns ErrSunk if the ship has already sunk earlier.

type TCPPier 

type TCPPier struct {
	PierBase
	// contains filtered or unexported fields
}

TCPPier is a pier that uses TCP.

func (*TCPPier) Abolish 

func (pier *TCPPier) Abolish()

Abolish closes the underlying listener and cleans up any related resources.

type TCPShip 

type TCPShip struct {
	ShipBase
}

TCPShip is a ship that uses TCP.

type TestShip 

type TestShip struct {
	// contains filtered or unexported fields
}

TestShip is a simulated ship that is used for testing higher level components.

func NewTestShip 

func NewTestShip(secure bool, loadSize int) *TestShip

NewTestShip returns a new TestShip for simulation.

func (*TestShip) IsMine 

func (ship *TestShip) IsMine() bool

IsMine returns whether the ship was launched from here.

func (*TestShip) IsSecure 

func (ship *TestShip) IsSecure() bool

IsSecure returns whether the ship provides transport security.

func (*TestShip) Load 

func (ship *TestShip) Load(data []byte) error

Load loads data into the ship - ie. sends the data via the connection. Returns ErrSunk if the ship has already sunk earlier.

func (*TestShip) LoadSize 

func (ship *TestShip) LoadSize() int

LoadSize returns the recommended data size that should be handed to Load(). This value will be most likely somehow related to the connection's MTU. Alternatively, using a multiple of LoadSize is also recommended.

func (*TestShip) LocalAddr 

func (ship *TestShip) LocalAddr() net.Addr

func (*TestShip) MarkPublic 

func (ship *TestShip) MarkPublic()

func (*TestShip) Mask 

func (ship *TestShip) Mask(value []byte) string

func (*TestShip) MaskAddress 

func (ship *TestShip) MaskAddress(addr net.Addr) string

func (*TestShip) MaskIP 

func (ship *TestShip) MaskIP(ip net.IP) string

func (*TestShip) Public 

func (ship *TestShip) Public() bool

func (*TestShip) RemoteAddr 

func (ship *TestShip) RemoteAddr() net.Addr

func (*TestShip) Reverse 

func (ship *TestShip) Reverse() *TestShip

Reverse creates a connected TestShip. This is used to simulate a connection instead of using a Pier.

func (*TestShip) Sink 

func (ship *TestShip) Sink()

Sink closes the underlying connection and cleans up any related resources.

func (*TestShip) String 

func (ship *TestShip) String() string

String returns a human readable informational summary about the ship.

func (*TestShip) Transport 

func (ship *TestShip) Transport() *hub.Transport

Transport returns the transport used for this ship.

func (*TestShip) UnloadTo 

func (ship *TestShip) UnloadTo(buf []byte) (n int, err error)

UnloadTo unloads data from the ship - ie. receives data from the connection - puts it into the buf. It returns the amount of data written and an optional error. Returns ErrSunk if the ship has already sunk earlier.

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.