sip

package
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 Go to latest Published: Sep 2, 2024 License: BSD-2-Clause Imports: 22 Imported by: 0

README

SIP stack in GO

This SIP stack for RFC:

https://datatracker.ietf.org/doc/html/rfc3261

Stack:

  • Encoding/Decoding with Parser optimized for fast parsing
  • Transport Layer and support for different protocols
  • Transaction Layer with transaction sessions managing and state machine

Parser

Parser by default parses set of headers that are mostly present in messages. From,To,Via,Cseq,Content-Type,Content-Length... This headers are accessible via fast reference msg.Via(), msg.From()...

This can be configured using WithHeadersParsers and reducing this to increase performance. SIP stack in case needed will use fast reference and lazy parsing.

Documentation

Overview

Originally forked from https://github.com/ghettovoice/gosip by @ghetovoice

Index

Constants

View Source 
const (
	MTU uint = 1500

	DefaultHost     = "127.0.0.1"
	DefaultProtocol = "UDP"

	DefaultUdpPort int = 5060
	DefaultTcpPort int = 5060
	DefaultTlsPort int = 5061
	DefaultWsPort  int = 80
	DefaultWssPort int = 443

	RFC3261BranchMagicCookie = "z9hG4bK"
)
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
)
View Source 
const (
	FsmInputNone fsmInput = iota
)

FSM Inputs

Variables

View Source 
var (
	ErrParseLineNoCRLF = errors.New("line has no CRLF")
	ErrParseEOF        = errors.New("EOF on reading line")

	// Stream parse errors
	ErrParseSipPartial         = errors.New("SIP partial data")
	ErrParseReadBodyIncomplete = errors.New("reading body incomplete")
	ErrParseMoreMessages       = errors.New("Stream has more message")
)
View Source 
var (
	// SIP timers are exposed for manipulation but best approach is using SetTimers
	// where all timers get populated based on
	// T1: Round-trip time (RTT) estimate, Default 500ms
	T1,

	T2,

	T4,

	Timer_A,

	Timer_B,
	Timer_D,
	Timer_E,

	Timer_F,
	Timer_G,
	Timer_H,
	Timer_I,
	Timer_J,
	Timer_K,
	Timer_L,
	Timer_M time.Duration

	Timer_1xx = 200 * time.Millisecond

	TxSeperator = "__"

	TransactionFSMDebug bool
)
View Source 
var (
	// Transaction Layer Errors can be detected and handled with different response on caller side
	// https://www.rfc-editor.org/rfc/rfc3261#section-8.1.3.1
	ErrTransactionTimeout   = errors.New("transaction timeout")
	ErrTransactionTransport = errors.New("transaction transport error")
)
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 (
	UDPMTUSize = 1500

	// UDPUseConnectedConnection will force creating UDP connected connection
	UDPUseConnectedConnection = false

	ErrUDPMTUCongestion = errors.New("size of packet larger than MTU")
)
View Source 
var (

	// Errors
	ErrTransportNotSuported = 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 ASCIIToLower 

func ASCIIToLower(s string) string

ASCIIToLower is faster than go version. It avoids one more loop

func ASCIIToLowerInPlace 

func ASCIIToLowerInPlace(s []byte)

func CopyHeaders 

func CopyHeaders(name string, from, to Message)

Copy all headers of one type from one message to another. Appending to any headers that were already there.

func DefaultHeadersParser 

func DefaultHeadersParser() map[string]HeaderParser

DefaultHeadersParser returns minimal version header parser. It can be extended or overwritten. Removing some defaults can break SIP functionality

NOTE this API call may change

func DefaultPort 

func DefaultPort(transport string) int

DefaultPort returns transport default port by network.

func GenerateBranch 

func GenerateBranch() string

GenerateBranch returns random unique branch ID.

func GenerateBranchN 

func GenerateBranchN(n int) string

GenerateBranchN returns random unique branch ID in format MagicCookie.<n chars>

func GenerateTagN 

func GenerateTagN(n int) string

func HeaderToLower 

func HeaderToLower(s string) string

HeaderToLower is fast ASCII lower string

func IsReliable 

func IsReliable(network string) bool

func MakeClientTxKey 

func MakeClientTxKey(msg Message) (string, error)

MakeClientTxKey creates client key for matching responses - RFC 3261 17.1.3.

func MakeDialogID 

func MakeDialogID(callID, innerID, externalID string) string

func MakeDialogIDFromRequest 

func MakeDialogIDFromRequest(msg *Request) (string, error)

MakeDialogIDFromMessage creates dialog ID of message. Use UASReadRequestDialogID UACReadRequestDialogID for more specific returns error if callid or to tag or from tag does not exists

func MakeDialogIDFromResponse 

func MakeDialogIDFromResponse(msg *Response) (string, error)

MakeDialogIDFromResponse creates dialog ID of message. returns error if callid or to tag or from tag does not exists

func MakeServerTxKey 

func MakeServerTxKey(msg Message) (string, error)

MakeServerTxKey creates server key for matching retransmitting requests - RFC 3261 17.2.3.

func MessageShortString 

func MessageShortString(msg Message) string

MessageShortString dumps short version of msg. Used only for logging

func NetworkToLower 

func NetworkToLower(network string) string

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

func NonceWrite 

func NonceWrite(buf []byte)

func ParseAddr 

func ParseAddr(addr string) (host string, port int, err error)

func ParseAddressValue 

func ParseAddressValue(addressText string, uri *Uri, headerParams HeaderParams) (displayName string, err error)

ParseAddressValue parses an address - such as from a From, To, or Contact header. It returns: See RFC 3261 section 20.10 for details on parsing an address.

func ParseUri 

func ParseUri(uriStr string, uri *Uri) (err error)

ParseUri converts a string representation of a URI into a Uri object. Following https://datatracker.ietf.org/doc/html/rfc3261#section-19.1.1 sip:user:password@host:port;uri-parameters?headers

func RandString 

func RandString(n int) string

https://github.com/kpbird/golang_random_string

func RandStringBytesMask 

func RandStringBytesMask(sb *strings.Builder, n int) string

https://stackoverflow.com/questions/22892120/how-to-generate-a-random-string-of-a-fixed-length-in-go

func ResolveInterfacesIP 

func ResolveInterfacesIP(network string, targetIP net.IP) (net.IP, net.Interface, error)

ResolveInterfaceIP will check current interfaces and resolve to IP Using targetIP it will try to match interface with same subnet network can be "ip" "ip4" "ip6" by default it avoids loopack IP unless targetIP is loopback

func ResolveSelfIP 

func ResolveSelfIP() (net.IP, error)

ResolveSelfIP returns first non loopback IP

Deprecated use ResolveInterfacesIP

func SetTimers 

func SetTimers(t1, t2, t4 time.Duration)

func SplitByWhitespace 

func SplitByWhitespace(text string) []string

Splits the given string into sections, separated by one or more characters from c_ABNF_WS.

func UACReadRequestDialogID 

func UACReadRequestDialogID(msg *Request) (string, error)

UACReadRequestDialogID creates dialog ID of message if receiver has UAC role. returns error if callid or to tag or from tag does not exists

func UASReadRequestDialogID 

func UASReadRequestDialogID(msg *Request) (string, error)

UASReadRequestDialogID creates dialog ID of message if receiver has UAS role. returns error if callid or to tag or from tag does not exists

func UnmarshalParams 

func UnmarshalParams(s string, seperator rune, ending rune, p HeaderParams) (n int, err error)

func UriIsSIP 

func UriIsSIP(s string) bool

Check uri is SIP fast

func UriIsSIPS 

func UriIsSIPS(s string) bool

Types

type Addr 

type Addr struct {
	IP       net.IP // Must be in IP format
	Port     int
	Hostname string // Original hostname before resolved to IP
}

func (*Addr) String 

func (a *Addr) String() string

type CSeqHeader 

type CSeqHeader struct {
	SeqNo      uint32
	MethodName RequestMethod
}

CSeq is CSeq header

func (*CSeqHeader) Name 

func (h *CSeqHeader) Name() string

func (*CSeqHeader) String 

func (h *CSeqHeader) String() string

func (*CSeqHeader) StringWrite 

func (h *CSeqHeader) StringWrite(buffer io.StringWriter)

func (*CSeqHeader) Value 

func (h *CSeqHeader) Value() string

func (*CSeqHeader) ValueStringWrite 

func (h *CSeqHeader) ValueStringWrite(buffer io.StringWriter)

type CallIDHeader 

type CallIDHeader string

CallIDHeader is a Call-ID header presentation

func (*CallIDHeader) Name 

func (h *CallIDHeader) Name() string

func (*CallIDHeader) String 

func (h *CallIDHeader) String() string

func (*CallIDHeader) StringWrite 

func (h *CallIDHeader) StringWrite(buffer io.StringWriter)

func (*CallIDHeader) Value 

func (h *CallIDHeader) Value() string

type ClientTransaction 

type ClientTransaction interface {
	Transaction
	// Responses returns channel with all responses for transaction
	Responses() <-chan *Response
	// Cancel sends cancel request
	// TODO: Do we need context passing here?
	Cancel() error
}

type ClientTx 

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

func NewClientTx 

func NewClientTx(key string, origin *Request, conn Connection, logger zerolog.Logger) *ClientTx

func (*ClientTx) Cancel 

func (tx *ClientTx) Cancel() error

Cancel cancels client transaction by sending CANCEL request

func (*ClientTx) Done 

func (tx *ClientTx) Done() <-chan struct{}

func (*ClientTx) Err 

func (tx *ClientTx) Err() error

func (*ClientTx) Init 

func (tx *ClientTx) Init() error

func (*ClientTx) Key 

func (tx *ClientTx) Key() string

func (*ClientTx) OnTerminate 

func (tx *ClientTx) OnTerminate(f FnTxTerminate)

func (*ClientTx) Origin 

func (tx *ClientTx) Origin() *Request

func (*ClientTx) Responses 

func (tx *ClientTx) Responses() <-chan *Response

func (*ClientTx) String 

func (tx *ClientTx) String() string

func (*ClientTx) Terminate 

func (tx *ClientTx) Terminate()

type Connection 

type Connection interface {
	// LocalAddr used for connection
	LocalAddr() net.Addr
	// WriteMsg marshals message and sends to socket
	WriteMsg(msg 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) AddIfNotExists 

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

func (*ConnectionPool) Clear 

func (p *ConnectionPool) Clear()

Clear will clear all connection from pool and close them

func (*ConnectionPool) CloseAndDelete 

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

CloseAndDelete closes connection and deletes from pool

func (*ConnectionPool) Delete 

func (p *ConnectionPool) Delete(addr string)

func (*ConnectionPool) DeleteMultiple 

func (p *ConnectionPool) DeleteMultiple(addrs []string)

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 

func (p *ConnectionPool) Size() int

type ContactHeader 

type ContactHeader struct {
	// The display name from the header, may be omitted.
	DisplayName string
	Address     Uri
	// Any parameters present in the header.
	Params HeaderParams
}

ContactHeader is Contact header representation

func (*ContactHeader) Clone 

func (h *ContactHeader) Clone() *ContactHeader

func (*ContactHeader) Name 

func (h *ContactHeader) Name() string

func (*ContactHeader) String 

func (h *ContactHeader) String() string

func (*ContactHeader) StringWrite 

func (h *ContactHeader) StringWrite(buffer io.StringWriter)

func (*ContactHeader) Value 

func (h *ContactHeader) Value() string

type ContentLengthHeader 

type ContentLengthHeader uint32

ContentLengthHeader is Content-Length header representation

func (*ContentLengthHeader) Name 

func (h *ContentLengthHeader) Name() string

func (ContentLengthHeader) String 

func (h ContentLengthHeader) String() string

func (ContentLengthHeader) StringWrite 

func (h ContentLengthHeader) StringWrite(buffer io.StringWriter)

func (ContentLengthHeader) Value 

func (h ContentLengthHeader) Value() string

type ContentTypeHeader 

type ContentTypeHeader string

ContentTypeHeader is Content-Type header representation.

func (*ContentTypeHeader) Name 

func (h *ContentTypeHeader) Name() string

func (h **ContentTypeHeader) Name() string { return "Content-Type" }

func (*ContentTypeHeader) String 

func (h *ContentTypeHeader) String() string

func (*ContentTypeHeader) StringWrite 

func (h *ContentTypeHeader) StringWrite(buffer io.StringWriter)

func (*ContentTypeHeader) Value 

func (h *ContentTypeHeader) Value() string

type CopyHeader 

type CopyHeader interface {
	// contains filtered or unexported methods
}

CopyHeader is internal interface for cloning headers. Maybe it will be full exposed later

type DialogState 

type DialogState int
const (
	// Dialog received 200 response
	DialogStateEstablished DialogState = 1
	// Dialog received ACK
	DialogStateConfirmed DialogState = 2
	// Dialog received BYE
	DialogStateEnded DialogState = 3
)

func (DialogState) String 

func (s DialogState) String() string

type ErrorHandler 

type ErrorHandler func(err error)

type ExpiresHeader 

type ExpiresHeader uint32

ExpiresHeader is Expires header representation

func (*ExpiresHeader) Name 

func (h *ExpiresHeader) Name() string

func (*ExpiresHeader) String 

func (h *ExpiresHeader) String() string

func (*ExpiresHeader) StringWrite 

func (h *ExpiresHeader) StringWrite(buffer io.StringWriter)

func (ExpiresHeader) Value 

func (h ExpiresHeader) Value() string

type FnTxTerminate 

type FnTxTerminate func(key string)

type FromHeader 

type FromHeader struct {
	// The display name from the header, may be omitted.
	DisplayName string

	Address Uri

	// Any parameters present in the header.
	Params HeaderParams
}

func (*FromHeader) Name 

func (h *FromHeader) Name() string

func (*FromHeader) Next 

func (header *FromHeader) Next() Header

func (*FromHeader) String 

func (h *FromHeader) String() string

func (*FromHeader) StringWrite 

func (h *FromHeader) StringWrite(buffer io.StringWriter)

func (*FromHeader) Value 

func (h *FromHeader) Value() string

func (*FromHeader) ValueStringWrite 

func (h *FromHeader) ValueStringWrite(buffer io.StringWriter)
type Header interface {
	// Name returns header name.
	Name() string
	Value() string
	String() string
	// StringWrite is better way to reuse single buffer
	StringWrite(w io.StringWriter)
	// contains filtered or unexported methods
}

Header is a single SIP header.

func HeaderClone 

func HeaderClone(h Header) Header

HeaderClone is generic function for cloning header

func NewHeader 

func NewHeader(name, value string) Header

NewHeader creates generic type of header

type HeaderKV 

type HeaderKV struct {
	K string
	V string
}

type HeaderParams 

type HeaderParams map[string]string

HeaderParams are key value params. They do not provide order by default due to performance reasons

func NewParams 

func NewParams() HeaderParams

Create an empty set of parameters.

func (HeaderParams) Add 

func (hp HeaderParams) Add(key string, val string) Params

Add will add new key:val. If key exists it will be overwriten

func (HeaderParams) Clone 

func (hp HeaderParams) Clone() Params

Clone returns underneath map copied

func (HeaderParams) Equals 

func (hp HeaderParams) Equals(other interface{}) bool

Equals check if two maps of parameters are equal in the sense of having the same keys with the same values. This does not rely on any ordering of the keys of the map in memory.

func (HeaderParams) Get 

func (hp HeaderParams) Get(key string) (string, bool)

Get returns existing key

func (HeaderParams) Has 

func (hp HeaderParams) Has(key string) bool

Has checks does key exists

func (HeaderParams) Items 

func (hp HeaderParams) Items() map[string]string

Items returns the entire parameter map.

func (HeaderParams) Keys 

func (hp HeaderParams) Keys() []string

Keys return a slice of keys, in order.

func (HeaderParams) Length 

func (hp HeaderParams) Length() int

Length returns number of params.

func (HeaderParams) Remove 

func (hp HeaderParams) Remove(key string) Params

Remove removes param with exact key

func (HeaderParams) String 

func (hp HeaderParams) String() string

String returns params joined with '&' char.

func (HeaderParams) ToString 

func (hp HeaderParams) ToString(sep uint8) string

ToString renders params to a string. Note that this does not escape special characters, this should already have been done before calling this method.

func (HeaderParams) ToStringWrite 

func (hp HeaderParams) ToStringWrite(sep uint8, buffer io.StringWriter)

ToStringWrite is same as ToString but it stores to defined buffer instead returning string

type HeaderParser 

type HeaderParser func(headerName string, headerData string) (Header, error)

A HeaderParser is any function that turns raw header data into one or more Header objects.

type MaxForwardsHeader 

type MaxForwardsHeader uint32

MaxForwardsHeader is Max-Forwards header representation

func (*MaxForwardsHeader) Dec 

func (h *MaxForwardsHeader) Dec()

func (*MaxForwardsHeader) Name 

func (h *MaxForwardsHeader) Name() string

func (*MaxForwardsHeader) String 

func (h *MaxForwardsHeader) String() string

func (*MaxForwardsHeader) StringWrite 

func (h *MaxForwardsHeader) StringWrite(buffer io.StringWriter)

func (MaxForwardsHeader) Val 

func (h MaxForwardsHeader) Val() uint32

func (*MaxForwardsHeader) Value 

func (h *MaxForwardsHeader) Value() string

type Message 

type Message interface {
	// String returns string representation of SIP message in RFC 3261 form.
	String() string
	// String write is same as String but lets you to provide writter and reduce allocations
	StringWrite(io.StringWriter)
	// GetHeaders returns slice of headers of the given type.
	GetHeaders(name string) []Header
	// PrependHeader prepends header to message.
	PrependHeader(header ...Header)
	// AppendHeader appends header to message.
	AppendHeader(header Header)
	// CallID returns 'Call-ID' header.
	CallID() *CallIDHeader
	// Via returns the top 'Via' header field.
	Via() *ViaHeader
	// From returns 'From' header field.
	From() *FromHeader
	// To returns 'To' header field.
	To() *ToHeader
	// CSeq returns 'CSeq' header field.
	CSeq() *CSeqHeader
	// Body returns message body.
	Body() []byte
	// SetBody sets message body.
	SetBody(body []byte)

	Transport() string
	SetTransport(tp string)
	Source() string
	SetSource(src string)
	Destination() string
	SetDestination(dest string)
}

func ParseMessage 

func ParseMessage(msgData []byte) (Message, error)

type MessageData 

type MessageData struct {

	// Set to 2.0 version by default
	SipVersion string
	// contains filtered or unexported fields
}

func (*MessageData) AppendHeader 

func (hs *MessageData) AppendHeader(header Header)

AppendHeader adds header at end of header list

func (*MessageData) AppendHeaderAfter 

func (hs *MessageData) AppendHeaderAfter(header Header, name string)

AppendHeaderAfter adds header after specified header. In case header does not exist normal AppendHeader is called Use it only if you need it

func (*MessageData) Body 

func (msg *MessageData) Body() []byte

func (*MessageData) CSeq 

func (hs *MessageData) CSeq() *CSeqHeader

CSeq returns CSEQ parsed header or nil if not exists

func (*MessageData) CallID 

func (hs *MessageData) CallID() *CallIDHeader

CallID returns CallID parsed header or nil if not exists

func (*MessageData) CloneHeaders 

func (hs *MessageData) CloneHeaders() []Header

CloneHeaders returns all cloned headers in slice.

func (*MessageData) Contact 

func (hs *MessageData) Contact() *ContactHeader

Contact returns Contact parsed header or nil if not exists

func (*MessageData) ContentLength 

func (hs *MessageData) ContentLength() *ContentLengthHeader

ContentLength returns Content-Length parsed header or nil if not exists

func (*MessageData) ContentType 

func (hs *MessageData) ContentType() *ContentTypeHeader

ContentType returns Content-Type parsed header or nil if not exists

func (*MessageData) Destination 

func (msg *MessageData) Destination() string

func (*MessageData) From 

func (hs *MessageData) From() *FromHeader

From returns From parsed header or nil if not exists

func (*MessageData) GetHeader 

func (hs *MessageData) GetHeader(name string) Header

GetHeader returns Header if exists, otherwise nil is returned Use lower case to avoid allocs Headers are pointers, always Clone them for change

func (*MessageData) GetHeaders 

func (hs *MessageData) GetHeaders(name string) []Header

GetHeaders returns list of headers with same name Use lower case to avoid allocs Headers are pointers, always Clone them for change

func (*MessageData) Headers 

func (hs *MessageData) Headers() []Header

Headers gets some headers.

func (*MessageData) MaxForwards 

func (hs *MessageData) MaxForwards() *MaxForwardsHeader

MaxForwards returns Max-Forwards parsed header or nil if not exists

func (*MessageData) PrependHeader 

func (hs *MessageData) PrependHeader(headers ...Header)

PrependHeader adds header to the front of header list using as list reduces need of realloc underneath array

func (*MessageData) RecordRoute 

func (hs *MessageData) RecordRoute() *RecordRouteHeader

RecordRoute returns Record-Route parsed header or nil if not exists

func (*MessageData) RemoveHeader 

func (hs *MessageData) RemoveHeader(name string) (removed bool)

RemoveHeader removes header by name

func (*MessageData) ReplaceHeader 

func (hs *MessageData) ReplaceHeader(header Header)

ReplaceHeader replaces first header with same name

func (*MessageData) Route 

func (hs *MessageData) Route() *RouteHeader

Route returns Route parsed header or nil if not exists

func (*MessageData) SetBody 

func (msg *MessageData) SetBody(body []byte)

SetBody sets message body, calculates it length and add 'Content-Length' header.

func (*MessageData) SetDestination 

func (msg *MessageData) SetDestination(dest string)

func (*MessageData) SetSource 

func (msg *MessageData) SetSource(src string)

func (*MessageData) SetTransport 

func (msg *MessageData) SetTransport(tp string)

func (*MessageData) Source 

func (msg *MessageData) Source() string

func (*MessageData) String 

func (hs *MessageData) String() string

func (*MessageData) StringWrite 

func (hs *MessageData) StringWrite(buffer io.StringWriter)

func (*MessageData) To 

func (hs *MessageData) To() *ToHeader

To returns To parsed header or nil if not exists

func (*MessageData) Transport 

func (msg *MessageData) Transport() string

func (*MessageData) Via 

func (hs *MessageData) Via() *ViaHeader

Via returns Via parsed header or nil if not exists

type MessageHandler 

type MessageHandler func(msg Message)

type Params 

type Params interface {
	Get(key string) (string, bool)
	Add(key string, val string) Params
	Remove(key string) Params
	Clone() Params
	Equals(params interface{}) bool
	ToString(sep uint8) string
	ToStringWrite(sep uint8, buffer io.StringWriter)
	String() string
	Length() int
	Items() map[string]string
	Keys() []string
	Has(key string) bool
}

type Parser 

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

Parser is implementation of SIPParser It is optimized with faster header parsing

func NewParser 

func NewParser(options ...ParserOption) *Parser

Create a new Parser.

func (*Parser) NewSIPStream 

func (p *Parser) NewSIPStream() *ParserStream

NewSIPStream implements SIP parsing contructor for IO that stream SIP message It should be created per each stream

func (*Parser) ParseSIP 

func (p *Parser) ParseSIP(data []byte) (msg Message, err error)

ParseSIP converts data to sip message. Buffer must contain full sip message

type ParserOption 

type ParserOption func(p *Parser)

ParserOption are addition option for NewParser. Check WithParser...

func WithHeadersParsers 

func WithHeadersParsers(m map[string]HeaderParser) ParserOption

WithHeadersParsers allows customizing parser headers parsers Consider performance when adding custom parser. Add only if it will appear in almost every message

Check DefaultHeadersParser as starting point

func WithParserLogger 

func WithParserLogger(logger zerolog.Logger) ParserOption

WithServerLogger allows customizing parser logger

type ParserStream 

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

func (*ParserStream) ParseSIPStream 

func (p *ParserStream) ParseSIPStream(data []byte) (msgs []Message, err error)

ParseSIPStream parsing messages comming in stream It has slight overhead vs parsing full message

type RecordRouteHeader 

type RecordRouteHeader struct {
	Address Uri
}

RecordRouteHeader is Record-Route header representation.

func (*RecordRouteHeader) Clone 

func (h *RecordRouteHeader) Clone() *RecordRouteHeader

func (*RecordRouteHeader) Name 

func (h *RecordRouteHeader) Name() string

func (*RecordRouteHeader) String 

func (h *RecordRouteHeader) String() string

func (*RecordRouteHeader) StringWrite 

func (h *RecordRouteHeader) StringWrite(buffer io.StringWriter)

func (*RecordRouteHeader) Value 

func (h *RecordRouteHeader) Value() string

func (*RecordRouteHeader) ValueStringWrite 

func (h *RecordRouteHeader) ValueStringWrite(buffer io.StringWriter)

type Request 

type Request struct {
	MessageData
	Method    RequestMethod
	Recipient Uri
}

Request RFC 3261 - 7.1.

func CopyRequest 

func CopyRequest(req *Request) *Request

func NewAckRequest 

func NewAckRequest(inviteRequest *Request, inviteResponse *Response, body []byte) *Request

NewAckRequest creates ACK request for 2xx INVITE https://tools.ietf.org/html/rfc3261#section-13.2.2.4 NOTE: it does not copy Via header. This is left to transport or caller to enforce Deprecated: use DialogClient for building dialogs

func NewRequest 

func NewRequest(method RequestMethod, recipient Uri) *Request

NewRequest creates base for building sip Request A Request-Line contains a method name, a Request-URI, and the SIP/2.0 as version No headers are added. AppendHeader should be called to add Headers. r.SetBody can be called to set proper ContentLength header

func (*Request) AppendHeader 

func (hs *Request) AppendHeader(header Header)

AppendHeader adds header at end of header list

func (*Request) AppendHeaderAfter 

func (hs *Request) AppendHeaderAfter(header Header, name string)

AppendHeaderAfter adds header after specified header. In case header does not exist normal AppendHeader is called Use it only if you need it

func (*Request) CSeq 

func (hs *Request) CSeq() *CSeqHeader

CSeq returns CSEQ parsed header or nil if not exists

func (*Request) CallID 

func (hs *Request) CallID() *CallIDHeader

CallID returns CallID parsed header or nil if not exists

func (*Request) Clone 

func (req *Request) Clone() *Request

func (*Request) CloneHeaders 

func (hs *Request) CloneHeaders() []Header

CloneHeaders returns all cloned headers in slice.

func (*Request) Contact 

func (hs *Request) Contact() *ContactHeader

Contact returns Contact parsed header or nil if not exists

func (*Request) ContentLength 

func (hs *Request) ContentLength() *ContentLengthHeader

ContentLength returns Content-Length parsed header or nil if not exists

func (*Request) ContentType 

func (hs *Request) ContentType() *ContentTypeHeader

ContentType returns Content-Type parsed header or nil if not exists

func (*Request) Destination 

func (req *Request) Destination() string

func (*Request) From 

func (hs *Request) From() *FromHeader

From returns From parsed header or nil if not exists

func (*Request) GetHeader 

func (hs *Request) GetHeader(name string) Header

GetHeader returns Header if exists, otherwise nil is returned Use lower case to avoid allocs Headers are pointers, always Clone them for change

func (*Request) GetHeaders 

func (hs *Request) GetHeaders(name string) []Header

GetHeaders returns list of headers with same name Use lower case to avoid allocs Headers are pointers, always Clone them for change

func (*Request) Headers 

func (hs *Request) Headers() []Header

Headers gets some headers.

func (*Request) IsAck 

func (req *Request) IsAck() bool

func (*Request) IsCancel 

func (req *Request) IsCancel() bool

func (*Request) IsInvite 

func (req *Request) IsInvite() bool

func (*Request) MaxForwards 

func (hs *Request) MaxForwards() *MaxForwardsHeader

MaxForwards returns Max-Forwards parsed header or nil if not exists

func (*Request) PrependHeader 

func (hs *Request) PrependHeader(headers ...Header)

PrependHeader adds header to the front of header list using as list reduces need of realloc underneath array

func (*Request) RecordRoute 

func (hs *Request) RecordRoute() *RecordRouteHeader

RecordRoute returns Record-Route parsed header or nil if not exists

func (*Request) RemoveHeader 

func (hs *Request) RemoveHeader(name string) (removed bool)

RemoveHeader removes header by name

func (*Request) ReplaceHeader 

func (hs *Request) ReplaceHeader(header Header)

ReplaceHeader replaces first header with same name

func (*Request) Route 

func (hs *Request) Route() *RouteHeader

Route returns Route parsed header or nil if not exists

func (*Request) Short 

func (req *Request) Short() string

func (*Request) Source 

func (req *Request) Source() string

Source will return host:port address In case of network parsed request source will be connection remote address

func (*Request) StartLine 

func (req *Request) StartLine() string

StartLine returns Request Line - RFC 2361 7.1.

func (*Request) StartLineWrite 

func (req *Request) StartLineWrite(buffer io.StringWriter)

func (*Request) String 

func (req *Request) String() string

func (*Request) StringWrite 

func (req *Request) StringWrite(buffer io.StringWriter)

func (*Request) To 

func (hs *Request) To() *ToHeader

To returns To parsed header or nil if not exists

func (*Request) Transport 

func (req *Request) Transport() string

func (*Request) Via 

func (hs *Request) Via() *ViaHeader

Via returns Via parsed header or nil if not exists

type RequestHandler 

type RequestHandler func(req *Request, tx ServerTransaction)

type RequestMethod 

type RequestMethod string
const (
	INVITE    RequestMethod = "INVITE"
	ACK       RequestMethod = "ACK"
	CANCEL    RequestMethod = "CANCEL"
	BYE       RequestMethod = "BYE"
	REGISTER  RequestMethod = "REGISTER"
	OPTIONS   RequestMethod = "OPTIONS"
	SUBSCRIBE RequestMethod = "SUBSCRIBE"
	NOTIFY    RequestMethod = "NOTIFY"
	REFER     RequestMethod = "REFER"
	INFO      RequestMethod = "INFO"
	MESSAGE   RequestMethod = "MESSAGE"
	PRACK     RequestMethod = "PRACK"
	UPDATE    RequestMethod = "UPDATE"
	PUBLISH   RequestMethod = "PUBLISH"
)

method names are defined here as constants for convenience.

func (RequestMethod) String 

func (r RequestMethod) String() string

type Response 

type Response struct {
	MessageData

	Reason     string     // e.g. "200 OK"
	StatusCode StatusCode // e.g. 200
}

Response RFC 3261 - 7.2.

func CopyResponse 

func CopyResponse(res *Response) *Response

func NewResponse 

func NewResponse(
	statusCode StatusCode,
	reason string,
) *Response

NewResponse creates base structure of response.

func NewResponseFromRequest 

func NewResponseFromRequest(
	req *Request,
	statusCode StatusCode,
	reason string,
	body []byte,
) *Response

RFC 3261 - 8.2.6

func NewSDPResponseFromRequest 

func NewSDPResponseFromRequest(req *Request, body []byte) *Response

NewSDPResponseFromRequest is wrapper for 200 response with SDP body

func (*Response) AppendHeader 

func (hs *Response) AppendHeader(header Header)

AppendHeader adds header at end of header list

func (*Response) AppendHeaderAfter 

func (hs *Response) AppendHeaderAfter(header Header, name string)

AppendHeaderAfter adds header after specified header. In case header does not exist normal AppendHeader is called Use it only if you need it

func (*Response) CSeq 

func (hs *Response) CSeq() *CSeqHeader

CSeq returns CSEQ parsed header or nil if not exists

func (*Response) CallID 

func (hs *Response) CallID() *CallIDHeader

CallID returns CallID parsed header or nil if not exists

func (*Response) Clone 

func (res *Response) Clone() *Response

func (*Response) CloneHeaders 

func (hs *Response) CloneHeaders() []Header

CloneHeaders returns all cloned headers in slice.

func (*Response) Contact 

func (hs *Response) Contact() *ContactHeader

Contact returns Contact parsed header or nil if not exists

func (*Response) ContentLength 

func (hs *Response) ContentLength() *ContentLengthHeader

ContentLength returns Content-Length parsed header or nil if not exists

func (*Response) ContentType 

func (hs *Response) ContentType() *ContentTypeHeader

ContentType returns Content-Type parsed header or nil if not exists

func (*Response) Destination 

func (res *Response) Destination() string

Destination will return host:port address In case of building response from request, request source is set as destination This will sent response over same connection if request is parsed from network

func (*Response) From 

func (hs *Response) From() *FromHeader

From returns From parsed header or nil if not exists

func (*Response) GetHeader 

func (hs *Response) GetHeader(name string) Header

GetHeader returns Header if exists, otherwise nil is returned Use lower case to avoid allocs Headers are pointers, always Clone them for change

func (*Response) GetHeaders 

func (hs *Response) GetHeaders(name string) []Header

GetHeaders returns list of headers with same name Use lower case to avoid allocs Headers are pointers, always Clone them for change

func (*Response) Headers 

func (hs *Response) Headers() []Header

Headers gets some headers.

func (*Response) IsAck 

func (res *Response) IsAck() bool

func (*Response) IsCancel 

func (res *Response) IsCancel() bool

func (*Response) IsClientError 

func (res *Response) IsClientError() bool

func (*Response) IsGlobalError 

func (res *Response) IsGlobalError() bool

func (*Response) IsProvisional 

func (res *Response) IsProvisional() bool

func (*Response) IsRedirection 

func (res *Response) IsRedirection() bool

func (*Response) IsServerError 

func (res *Response) IsServerError() bool

func (*Response) IsSuccess 

func (res *Response) IsSuccess() bool

func (*Response) MaxForwards 

func (hs *Response) MaxForwards() *MaxForwardsHeader

MaxForwards returns Max-Forwards parsed header or nil if not exists

func (*Response) PrependHeader 

func (hs *Response) PrependHeader(headers ...Header)

PrependHeader adds header to the front of header list using as list reduces need of realloc underneath array

func (*Response) RecordRoute 

func (hs *Response) RecordRoute() *RecordRouteHeader

RecordRoute returns Record-Route parsed header or nil if not exists

func (*Response) RemoveHeader 

func (hs *Response) RemoveHeader(name string) (removed bool)

RemoveHeader removes header by name

func (*Response) ReplaceHeader 

func (hs *Response) ReplaceHeader(header Header)

ReplaceHeader replaces first header with same name

func (*Response) Route 

func (hs *Response) Route() *RouteHeader

Route returns Route parsed header or nil if not exists

func (*Response) Short 

func (res *Response) Short() string

Short is textual short version of response

func (*Response) StartLine 

func (res *Response) StartLine() string

StartLine returns Response Status Line - RFC 2361 7.2.

func (*Response) StartLineWrite 

func (res *Response) StartLineWrite(buffer io.StringWriter)

func (*Response) String 

func (res *Response) String() string

func (*Response) StringWrite 

func (res *Response) StringWrite(buffer io.StringWriter)

func (*Response) To 

func (hs *Response) To() *ToHeader

To returns To parsed header or nil if not exists

func (*Response) Transport 

func (res *Response) Transport() string

func (*Response) Via 

func (hs *Response) Via() *ViaHeader

Via returns Via parsed header or nil if not exists

type RouteHeader 

type RouteHeader struct {
	Address Uri
}

RouteHeader is Route header representation.

func (*RouteHeader) Clone 

func (h *RouteHeader) Clone() *RouteHeader

func (*RouteHeader) Name 

func (h *RouteHeader) Name() string

func (*RouteHeader) String 

func (h *RouteHeader) String() string

func (*RouteHeader) StringWrite 

func (h *RouteHeader) StringWrite(buffer io.StringWriter)

func (*RouteHeader) Value 

func (h *RouteHeader) Value() string

func (*RouteHeader) ValueStringWrite 

func (h *RouteHeader) ValueStringWrite(buffer io.StringWriter)

type ServerTransaction 

type ServerTransaction interface {
	Transaction
	Respond(res *Response) error
	Acks() <-chan *Request
	// Cancels is triggered when transaction is canceled, that is SIP CANCEL is received for transaction.
	Cancels() <-chan *Request
}

type ServerTx 

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

func NewServerTx 

func NewServerTx(key string, origin *Request, conn Connection, logger zerolog.Logger) *ServerTx

func (*ServerTx) Acks 

func (tx *ServerTx) Acks() <-chan *Request

Acks makes channel for sending acks. Channel is created on demand

func (*ServerTx) Cancels 

func (tx *ServerTx) Cancels() <-chan *Request

func (*ServerTx) Done 

func (tx *ServerTx) Done() <-chan struct{}

func (*ServerTx) Err 

func (tx *ServerTx) Err() error

func (*ServerTx) Init 

func (tx *ServerTx) Init() error

func (*ServerTx) Key 

func (tx *ServerTx) Key() string

func (*ServerTx) OnTerminate 

func (tx *ServerTx) OnTerminate(f FnTxTerminate)

func (*ServerTx) Origin 

func (tx *ServerTx) Origin() *Request

func (*ServerTx) Receive 

func (tx *ServerTx) Receive(req *Request) error

Receive is endpoint for handling received server requests.

func (*ServerTx) Respond 

func (tx *ServerTx) Respond(res *Response) error

func (*ServerTx) State 

func (tx *ServerTx) State()

func (*ServerTx) String 

func (tx *ServerTx) String() string

func (*ServerTx) Terminate 

func (tx *ServerTx) Terminate()

type StatusCode 

type StatusCode int

StatusCode - response status code: 1xx - 6xx 

const (
	// https://datatracker.ietf.org/doc/html/rfc3261#section-21
	StatusTrying            StatusCode = 100
	StatusRinging           StatusCode = 180
	StatusCallIsForwarded   StatusCode = 181
	StatusQueued            StatusCode = 182
	StatusSessionInProgress StatusCode = 183

	StatusOK       StatusCode = 200
	StatusAccepted StatusCode = 202

	StatusMovedPermanently StatusCode = 301
	StatusMovedTemporarily StatusCode = 302
	StatusUseProxy         StatusCode = 305

	StatusBadRequest                   StatusCode = 400
	StatusUnauthorized                 StatusCode = 401
	StatusPaymentRequired              StatusCode = 402
	StatusForbidden                    StatusCode = 403
	StatusNotFound                     StatusCode = 404
	StatusMethodNotAllowed             StatusCode = 405
	StatusNotAcceptable                StatusCode = 406
	StatusProxyAuthRequired            StatusCode = 407
	StatusRequestTimeout               StatusCode = 408
	StatusConflict                     StatusCode = 409
	StatusGone                         StatusCode = 410
	StatusRequestEntityTooLarge        StatusCode = 413
	StatusRequestURITooLong            StatusCode = 414
	StatusUnsupportedMediaType         StatusCode = 415
	StatusRequestedRangeNotSatisfiable StatusCode = 416
	StatusBadExtension                 StatusCode = 420
	StatusExtensionRequired            StatusCode = 421
	StatusIntervalToBrief              StatusCode = 423
	StatusTemporarilyUnavailable       StatusCode = 480
	StatusCallTransactionDoesNotExists StatusCode = 481
	StatusLoopDetected                 StatusCode = 482
	StatusTooManyHops                  StatusCode = 483
	StatusAddressIncomplete            StatusCode = 484
	StatusAmbiguous                    StatusCode = 485
	StatusBusyHere                     StatusCode = 486
	StatusRequestTerminated            StatusCode = 487
	StatusNotAcceptableHere            StatusCode = 488

	StatusInternalServerError StatusCode = 500
	StatusNotImplemented      StatusCode = 501
	StatusBadGateway          StatusCode = 502
	StatusServiceUnavailable  StatusCode = 503
	StatusGatewayTimeout      StatusCode = 504
	StatusVersionNotSupported StatusCode = 505
	StatusMessageTooLarge     StatusCode = 513

	StatusGlobalBusyEverywhere       StatusCode = 600
	StatusGlobalDecline              StatusCode = 603
	StatusGlobalDoesNotExistAnywhere StatusCode = 604
	StatusGlobalNotAcceptable        StatusCode = 606
)

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 

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 Message) error

type ToHeader 

type ToHeader struct {
	// The display name from the header, may be omitted.
	DisplayName string
	Address     Uri
	// Any parameters present in the header.
	Params HeaderParams
}

ToHeader introduces SIP 'To' header

func (*ToHeader) Name 

func (h *ToHeader) Name() string

func (*ToHeader) Next 

func (header *ToHeader) Next() Header

func (*ToHeader) String 

func (h *ToHeader) String() string

func (*ToHeader) StringWrite 

func (h *ToHeader) StringWrite(buffer io.StringWriter)

func (*ToHeader) Value 

func (h *ToHeader) Value() string

func (*ToHeader) ValueStringWrite 

func (h *ToHeader) ValueStringWrite(buffer io.StringWriter)

type Transaction 

type Transaction interface {
	// Terminate will terminate transaction
	Terminate()
	// Done when transaction fsm terminates. Can be called multiple times
	Done() <-chan struct{}
	// Last error. Useful to check when transaction terminates
	Err() error
}

type TransactionLayer 

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

func NewTransactionLayer 

func NewTransactionLayer(tpl *TransportLayer) *TransactionLayer

func (*TransactionLayer) Close 

func (txl *TransactionLayer) Close()

func (*TransactionLayer) OnRequest 

func (txl *TransactionLayer) OnRequest(h RequestHandler)

func (*TransactionLayer) Request 

func (txl *TransactionLayer) Request(ctx context.Context, req *Request) (*ClientTx, error)

func (*TransactionLayer) Respond 

func (txl *TransactionLayer) Respond(res *Response) (*ServerTx, error)

func (*TransactionLayer) Transport 

func (txl *TransactionLayer) Transport() *TransportLayer

func (*TransactionLayer) UnhandledResponseHandler 

func (txl *TransactionLayer) UnhandledResponseHandler(f UnhandledResponseHandler)

UnhandledResponseHandler can be used in case missing client transactions for handling response ServerTransaction handle responses by state machine

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 MessageHandler) (Connection, error)
	String() string
	Close() error
}

Protocol implements network specific features.

type TransportLayer 

type TransportLayer struct {

	// ConnectionReuse will force connection reuse when passing request
	ConnectionReuse bool

	// PreferSRV does always SRV lookup first
	DNSPreferSRV bool
	// contains filtered or unexported fields
}

TransportLayer implementation.

func NewTransportLayer 

func NewTransportLayer(
	dnsResolver *net.Resolver,
	sipparser *Parser,
	tlsConfig *tls.Config,
) *TransportLayer

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

func (*TransportLayer) ClientRequestConnection 

func (l *TransportLayer) ClientRequestConnection(ctx context.Context, req *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 (*TransportLayer) Close 

func (l *TransportLayer) Close() error

func (*TransportLayer) GetConnection 

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

GetConnection gets existing or creates new connection based on addr

func (*TransportLayer) GetListenPort 

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

func (*TransportLayer) OnMessage 

func (l *TransportLayer) OnMessage(h MessageHandler)

OnMessage is main function which will be called on any new message by transport layer Consider there is no concurency and you need to make sure that you do not block too long This is intentional as higher concurency can slow things

func (*TransportLayer) ServeTCP 

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

ServeTCP will listen on tcp connection

func (*TransportLayer) ServeTLS 

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

ServeTLS will listen on tcp connection

func (*TransportLayer) ServeUDP 

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

ServeUDP will listen on udp connection

func (*TransportLayer) ServeWS 

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

ServeWS will listen on ws connection

func (*TransportLayer) ServeWSS 

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

ServeWSS will listen on wss connection

func (*TransportLayer) WriteMsg 

func (l *TransportLayer) WriteMsg(msg Message) error

func (*TransportLayer) WriteMsgTo 

func (l *TransportLayer) WriteMsgTo(msg Message, addr string, network string) error

type UDPConnection 

type UDPConnection struct {
	// mutual exclusive for now to avoid interface for Read
	// TODO Refactor
	PacketConn net.PacketConn
	PacketAddr string // For faster matching
	Listener   bool

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

func (*UDPConnection) Close 

func (c *UDPConnection) Close() error

func (*UDPConnection) LocalAddr 

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

func (*UDPConnection) Read 

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

func (*UDPConnection) ReadFrom 

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) RemoteAddr 

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

func (*UDPConnection) TryClose 

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

func (*UDPConnection) Write 

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

func (*UDPConnection) WriteMsg 

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

func (*UDPConnection) WriteTo 

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

type UnhandledResponseHandler 

type UnhandledResponseHandler func(req *Response)

type Uri 

type Uri struct {
	// True if and only if the URI is a SIPS URI.
	Encrypted bool
	Wildcard  bool

	// The user part of the URI: the 'joe' in sip:joe@bloggs.com
	// This is a pointer, so that URIs without a user part can have 'nil'.
	User string

	// The password field of the URI. This is represented in the URI as joe:hunter2@bloggs.com.
	// Note that if a URI has a password field, it *must* have a user field as well.
	// Note that RFC 3261 strongly recommends against the use of password fields in SIP URIs,
	// as they are fundamentally insecure.
	Password string

	// The host part of the URI. This can be a domain, or a string representation of an IP address.
	Host string

	// The port part of the URI. This is optional, and can be empty.
	Port int

	// Any parameters associated with the URI.
	// These are used to provide information about requests that may be constructed from the URI.
	// (For more details, see RFC 3261 section 19.1.1).
	// These appear as a semicolon-separated list of key=value pairs following the host[:port] part.
	UriParams HeaderParams

	// Any headers to be included on requests constructed from this URI.
	// These appear as a '&'-separated list at the end of the URI, introduced by '?'.
	Headers HeaderParams
}

Uri is parsed form of sip:user:password@host:port;uri-parameters?headers In case of `sips:“ Encrypted is set to true

func (*Uri) Addr 

func (uri *Uri) Addr() string

Addr is uri part without headers and params. sip[s]:user@host[:port]

func (*Uri) Clone 

func (uri *Uri) Clone() *Uri

Clone

func (*Uri) Endpoint 

func (uri *Uri) Endpoint() string

Endpoint is uri user identifier. user@host[:port]

func (*Uri) HostPort 

func (uri *Uri) HostPort() string

HostPort represents host:port part

func (*Uri) IsEncrypted 

func (uri *Uri) IsEncrypted() bool

IsEncrypted returns true if uri is SIPS uri

func (*Uri) String 

func (uri *Uri) String() string

Generates the string representation of a SipUri struct.

func (*Uri) StringWrite 

func (uri *Uri) StringWrite(buffer io.StringWriter)

StringWrite writes uri string to buffer

type ViaHeader 

type ViaHeader struct {
	// E.g. 'SIP'.
	ProtocolName string
	// E.g. '2.0'.
	ProtocolVersion string
	Transport       string
	// TODO consider changing Host Port as struct Addr from transport
	Host   string
	Port   int // This is optional
	Params HeaderParams
}

ViaHeader is Via header representation. It can be linked list of multiple via if they are part of one header

func (*ViaHeader) Clone 

func (h *ViaHeader) Clone() *ViaHeader

func (*ViaHeader) Name 

func (h *ViaHeader) Name() string

func (*ViaHeader) SentBy 

func (hop *ViaHeader) SentBy() string

func (*ViaHeader) String 

func (h *ViaHeader) String() string

func (*ViaHeader) StringWrite 

func (h *ViaHeader) StringWrite(buffer io.StringWriter)

func (*ViaHeader) Value 

func (h *ViaHeader) Value() string

func (*ViaHeader) ValueStringWrite 

func (h *ViaHeader) ValueStringWrite(buffer io.StringWriter)

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 

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 Message) error

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