transport

package
v0.14.0 Latest Latest
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 Go to latest Published: Oct 16, 2023 License: BSD-2-Clause Imports: 18 Imported by: 0

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Index

Constants

View Source 
const (
	// Transport for different sip messages. GO uses lowercase, but for message parsing, we should
	// use this constants for setting message Transport
	TransportUDP = "UDP"
	TransportTCP = "TCP"
	TransportTLS = "TLS"
	TransportWS  = "WS"
	TransportWSS = "WSS"

	// TransportFixedLengthMessage sets message size limit for parsing and avoids stream parsing
	TransportFixedLengthMessage uint16 = 0
)

Variables

View Source 
var (
	SIPDebug bool

	// IdleConnection will keep connections idle even after transaction terminate
	// -1 	- single response or request will close
	// 0 	- close connection immediatelly after transaction terminate
	// 1 	- keep connection idle after transaction termination
	IdleConnection int = 1
)
View Source 
var (
	// UDPReadWorkers defines how many listeners will work
	// Best performance is achieved with low value, to remove high concurency
	UDPReadWorkers int = 1

	UDPMTUSize = 1500

	ErrUDPMTUCongestion = errors.New("size of packet larger than MTU")
)
View Source 
var (
	ErrNetworkNotSuported = errors.New("protocol not supported")
)
View Source 
var (
	// WebSocketProtocols is used in setting websocket header
	// By default clients must accept protocol sip
	WebSocketProtocols = []string{"sip"}
)

Functions

func IsReliable 

func IsReliable(network string) bool

func NetworkToLower 

func NetworkToLower(network string) string

NetworkToLower is faster function converting UDP, TCP to udp, tcp

Types

type Addr added in v0.12.1 

type Addr struct {
	IP   net.IP // Must be in IP format
	Port int
}

func (*Addr) String added in v0.12.1 

func (a *Addr) String() string

type Connection 

type Connection interface {
	// LocalAddr used for connection
	LocalAddr() net.Addr
	// WriteMsg marshals message and sends to socket
	WriteMsg(msg sip.Message) error
	// Reference of connection can be increased/decreased to prevent closing to earlyss
	Ref(i int) int
	// Close decreases reference and if ref = 0 closes connection. Returns last ref. If 0 then it is closed
	TryClose() (int, error)

	Close() error
}

type ConnectionPool 

type ConnectionPool struct {
	// TODO consider sync.Map way with atomic checks to reduce mutex contention
	sync.RWMutex
	// contains filtered or unexported fields
}

func NewConnectionPool 

func NewConnectionPool() ConnectionPool

func (*ConnectionPool) Add 

func (p *ConnectionPool) Add(a string, c Connection)

func (*ConnectionPool) Clear added in v0.13.0 

func (p *ConnectionPool) Clear()

Clear will clear all connection from pool and close them

func (*ConnectionPool) CloseAndDelete added in v0.12.1 

func (p *ConnectionPool) CloseAndDelete(c Connection, addr string)

CloseAndDelete closes connection and deletes from pool

func (*ConnectionPool) Get 

func (p *ConnectionPool) Get(a string) (c Connection)

Getting connection pool increases reference Make sure you TryClose after finish

func (*ConnectionPool) Size added in v0.10.0 

func (p *ConnectionPool) Size() int

type Layer 

type Layer struct {

	// ConnectionReuse will force connection reuse when passing request
	ConnectionReuse bool
	// contains filtered or unexported fields
}

Layer implementation.

func NewLayer 

func NewLayer(
	dnsResolver *net.Resolver,
	sipparser *parser.Parser,
	tlsConfig *tls.Config,
) *Layer

NewLayer creates transport layer. dns Resolver sip parser tls config - can be nil to use default tls

func (*Layer) ClientRequestConnection 

func (l *Layer) ClientRequestConnection(ctx context.Context, req *sip.Request) (c Connection, err error)

ClientRequestConnection is based on https://www.rfc-editor.org/rfc/rfc3261#section-18.1.1 It is wrapper for getting and creating connection

In case req destination is DNS resolved, destination will be cached or in other words SetDestination will be called

func (*Layer) Close 

func (l *Layer) Close() error

func (*Layer) GetConnection 

func (l *Layer) GetConnection(network, addr string) (Connection, error)

GetConnection gets existing or creates new connection based on addr

func (*Layer) GetListenPort added in v0.13.0 

func (l *Layer) GetListenPort(network string) int

func (*Layer) OnMessage 

func (l *Layer) OnMessage(h sip.MessageHandler)

OnMessage is main function which will be called on any new message by transport layer

func (*Layer) ServeTCP 

func (l *Layer) ServeTCP(c net.Listener) error

ServeTCP will listen on tcp connection

func (*Layer) ServeTLS added in v0.7.0 

func (l *Layer) ServeTLS(c net.Listener) error

ServeTLS will listen on tcp connection

func (*Layer) ServeUDP 

func (l *Layer) ServeUDP(c net.PacketConn) error

ServeUDP will listen on udp connection

func (*Layer) ServeWS 

func (l *Layer) ServeWS(c net.Listener) error

ServeWS will listen on ws connection

func (*Layer) ServeWSS added in v0.12.0 

func (l *Layer) ServeWSS(c net.Listener) error

ServeWSS will listen on wss connection

func (*Layer) WriteMsg 

func (l *Layer) WriteMsg(msg sip.Message) error

func (*Layer) WriteMsgTo 

func (l *Layer) WriteMsgTo(msg sip.Message, addr string, network string) error

type TCPConnection 

type TCPConnection struct {
	net.Conn
	// contains filtered or unexported fields
}

func (*TCPConnection) Close 

func (c *TCPConnection) Close() error

func (*TCPConnection) Read 

func (c *TCPConnection) Read(b []byte) (n int, err error)

func (*TCPConnection) Ref 

func (c *TCPConnection) Ref(i int) int

func (*TCPConnection) TryClose added in v0.7.0 

func (c *TCPConnection) TryClose() (int, error)

func (*TCPConnection) Write 

func (c *TCPConnection) Write(b []byte) (n int, err error)

func (*TCPConnection) WriteMsg 

func (c *TCPConnection) WriteMsg(msg sip.Message) error

type TCPTransport 

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

TCP transport implementation

func NewTCPTransport 

func NewTCPTransport(par *parser.Parser) *TCPTransport

func (*TCPTransport) Close 

func (t *TCPTransport) Close() error

func (*TCPTransport) CreateConnection 

func (t *TCPTransport) CreateConnection(ctx context.Context, laddr Addr, raddr Addr, handler sip.MessageHandler) (Connection, error)

func (*TCPTransport) GetConnection 

func (t *TCPTransport) GetConnection(addr string) (Connection, error)

func (*TCPTransport) Network 

func (t *TCPTransport) Network() string

func (*TCPTransport) Serve 

func (t *TCPTransport) Serve(l net.Listener, handler sip.MessageHandler) error

Serve is direct way to provide conn on which this worker will listen

func (*TCPTransport) String 

func (t *TCPTransport) String() string

type TLSTransport added in v0.7.0 

type TLSTransport struct {
	*TCPTransport
	// contains filtered or unexported fields
}

TLS transport implementation

func NewTLSTransport added in v0.7.0 

func NewTLSTransport(par *parser.Parser, dialTLSConf *tls.Config) *TLSTransport

NewTLSTransport needs dialTLSConf for creating connections when dialing

func (*TLSTransport) CreateConnection added in v0.7.0 

func (t *TLSTransport) CreateConnection(ctx context.Context, laddr Addr, raddr Addr, handler sip.MessageHandler) (Connection, error)

CreateConnection creates TLS connection for TCP transport

func (*TLSTransport) String added in v0.7.0 

func (t *TLSTransport) String() string

type Transport 

type Transport interface {
	Network() string

	// GetConnection returns connection from transport
	// addr must be resolved to IP:port
	GetConnection(addr string) (Connection, error)
	CreateConnection(ctx context.Context, laddr Addr, raddr Addr, handler sip.MessageHandler) (Connection, error)
	String() string
	Close() error
}

Protocol implements network specific features.

type UDPConnection 

type UDPConnection struct {
	// mutual exclusive for now
	// TODO Refactor
	PacketConn net.PacketConn
	PacketAddr string // For faster matching

	Conn net.Conn
	// contains filtered or unexported fields
}

func (*UDPConnection) Close 

func (c *UDPConnection) Close() error

func (*UDPConnection) LocalAddr added in v0.12.1 

func (c *UDPConnection) LocalAddr() net.Addr

func (*UDPConnection) Read added in v0.10.0 

func (c *UDPConnection) Read(b []byte) (n int, err error)

func (*UDPConnection) ReadFrom added in v0.7.0 

func (c *UDPConnection) ReadFrom(b []byte) (n int, addr net.Addr, err error)

func (*UDPConnection) Ref 

func (c *UDPConnection) Ref(i int) int

func (*UDPConnection) TryClose added in v0.7.0 

func (c *UDPConnection) TryClose() (int, error)

func (*UDPConnection) Write added in v0.10.0 

func (c *UDPConnection) Write(b []byte) (n int, err error)

func (*UDPConnection) WriteMsg 

func (c *UDPConnection) WriteMsg(msg sip.Message) error

func (*UDPConnection) WriteTo added in v0.7.0 

func (c *UDPConnection) WriteTo(b []byte, addr net.Addr) (n int, err error)

type UDPTransport 

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

UDP transport implementation

func NewUDPTransport 

func NewUDPTransport(par *parser.Parser) *UDPTransport

func (*UDPTransport) Close 

func (t *UDPTransport) Close() error

func (*UDPTransport) CreateConnection 

func (t *UDPTransport) CreateConnection(ctx context.Context, laddr Addr, raddr Addr, handler sip.MessageHandler) (Connection, error)

CreateConnection will create new connection

func (*UDPTransport) GetConnection 

func (t *UDPTransport) GetConnection(addr string) (Connection, error)

GetConnection will return same listener connection

func (*UDPTransport) Network 

func (t *UDPTransport) Network() string

func (*UDPTransport) ResolveAddr 

func (t *UDPTransport) ResolveAddr(addr string) (net.Addr, error)

func (*UDPTransport) Serve 

func (t *UDPTransport) Serve(conn net.PacketConn, handler sip.MessageHandler) error

ServeConn is direct way to provide conn on which this worker will listen UDPReadWorkers are used to create more workers

func (*UDPTransport) String 

func (t *UDPTransport) String() string

type WSConnection 

type WSConnection struct {
	net.Conn
	// contains filtered or unexported fields
}

func (*WSConnection) Close 

func (c *WSConnection) Close() error

func (*WSConnection) Read 

func (c *WSConnection) Read(b []byte) (n int, err error)

func (*WSConnection) Ref 

func (c *WSConnection) Ref(i int) int

func (*WSConnection) TryClose added in v0.7.0 

func (c *WSConnection) TryClose() (int, error)

func (*WSConnection) Write 

func (c *WSConnection) Write(b []byte) (n int, err error)

func (*WSConnection) WriteMsg 

func (c *WSConnection) WriteMsg(msg sip.Message) error

type WSSTransport added in v0.12.0 

type WSSTransport struct {
	*WSTransport
}

TLS transport implementation

func NewWSSTransport added in v0.12.0 

func NewWSSTransport(par *parser.Parser, dialTLSConf *tls.Config) *WSSTransport

NewWSSTransport needs dialTLSConf for creating connections when dialing

func (*WSSTransport) CreateConnection added in v0.12.0 

func (t *WSSTransport) CreateConnection(ctx context.Context, laddr Addr, raddr Addr, handler sip.MessageHandler) (Connection, error)

CreateConnection creates WSS connection for TCP transport TODO Make this consisten with TCP

func (*WSSTransport) String added in v0.12.0 

func (t *WSSTransport) String() string

type WSTransport 

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

WS transport implementation

func NewWSTransport 

func NewWSTransport(par *parser.Parser) *WSTransport

func (*WSTransport) Close 

func (t *WSTransport) Close() error

func (*WSTransport) CreateConnection 

func (t *WSTransport) CreateConnection(ctx context.Context, laddr Addr, raddr Addr, handler sip.MessageHandler) (Connection, error)

func (*WSTransport) GetConnection 

func (t *WSTransport) GetConnection(addr string) (Connection, error)

func (*WSTransport) Network 

func (t *WSTransport) Network() string

func (*WSTransport) ResolveAddr 

func (t *WSTransport) ResolveAddr(addr string) (net.Addr, error)

func (*WSTransport) Serve 

func (t *WSTransport) Serve(l net.Listener, handler sip.MessageHandler) error

Serve is direct way to provide conn on which this worker will listen

func (*WSTransport) String 

func (t *WSTransport) String() string

Source Files

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