gov.nist.javax.sip.message
Class SIPMessage

java.lang.Object
  gov.nist.core.GenericObject
      gov.nist.javax.sip.message.MessageObject
          gov.nist.javax.sip.message.SIPMessage

All Implemented Interfaces:

Cloneable, Message, Serializable

Direct Known Subclasses:

SIPRequest, SIPResponse

public abstract class SIPMessage

extends MessageObject

implements Message

This is the main SIP Message structure.

Since:

1.1

Version:

1.2 $Revision: 1.22 $ $Date: 2006/10/12 20:53:21 $

Author:

M. Ranganathan

See Also:

StringMsgParser, PipelinedMsgParser, Serialized Form

Constructor Summary

SIPMessage()
Constructor: Initializes lists and list headers.

Method Summary

void	addFirst(Header header) Adds the new Header to the head of the existing list of Headers contained in this Message.
void	addHeader(Header sipHeader) Add a SIP header.
void	addHeader(String sipHeader) Add a SIP header.
void	addLast(Header header) Adds the new Header to the end of existing list of Headers contained in this Message.
void	addUnparsed(String unparsed) Add a header to the unparsed list of headers.
void	attachHeader(SIPHeader h, boolean replaceflag) Attach a header to the end of the existing headers in this SIPMessage structure.
void	attachHeader(SIPHeader header, boolean replaceFlag, boolean top) Attach the header to the SIP Message structure at a specified position in its list of headers.
Object	clone() clone this message (create a new deep physical copy).
String	debugDump() Get the string representation of this header (for pretty printing the generated structure).
String	encode() Encode this message as a string.
byte[]	encodeAsBytes() Encode the message as a byte array.
abstract String	encodeMessage() Encode all the headers except the contents.
boolean	equals(Object other) Compare for equality.
Authorization	getAuthorization() Get the Authorization header (null if one does not exist).
CallIdHeader	getCallId() Get the CallID header (null if one does not exist)
Contact	getContactHeader() Get the contact header ( the first contact header) which is all we need for the most part.
ContactList	getContactHeaders() Get the Contact list of headers (null if one does not exist).
Object	getContent() Get the content of the header.
ContentDispositionHeader	getContentDisposition() get content disposition header or null if no such header exists.
ContentEncodingHeader	getContentEncoding() get the content encoding header.
ContentLanguageHeader	getContentLanguage() Get the contentLanguage header.
ContentLengthHeader	getContentLength() Get the ContentLength header (null if one does not exist).
ContentType	getContentTypeHeader() Get the contentType header (null if one does not exist).
CSeqHeader	getCSeq() Get the CSeq list of header (null if one does not exist).
abstract String	getDialogId(boolean isServerTransaction) Get A dialog identifier constructed from this messsage.
ErrorInfoList	getErrorInfoHeaders() Get the ErrorInfo list of headers (null if one does not exist).
ExpiresHeader	getExpires() Get the exipres header.
abstract String	getFirstLine() Return the encoded first line.
FromHeader	getFrom() Get the from header.
String	getFromTag() Return the from tag.
Header	getHeader(String headerName) Get the first header of the given name.
ListIterator	getHeaderNames() Get the header names.
ListIterator	getHeaders() Return an iterator for the list of headers in this message.
ListIterator	getHeaders(String headerName) Get a SIP header or Header list given its name.
MaxForwardsHeader	getMaxForwards() Get the MaxForwards header (null if one does not exist).
LinkedList	getMessageAsEncodedStrings() Get the headers as a linked list of encoded Strings
String	getMessageContent() Get the message body as a string.
byte[]	getRawContent() Get the message content as an array of bytes.
RecordRouteList	getRecordRouteHeaders() Get the RecordRoute header list (null if one does not exist).
RouteList	getRouteHeaders() Get the Route List of headers (null if one does not exist).
abstract String	getSIPVersion() Gets the protocol version of SIP being used by this Message.
int	getSize()
ToHeader	getTo() Get the To header (null if one does not exist).
Via	getTopmostVia() Get the topmost via header.
String	getToTag() Return the to tag.
String	getTransactionId() Generate (compute) a transaction ID for this SIP message.
ListIterator	getUnrecognizedHeaders() Get a list containing the unrecognized headers.
ViaList	getViaHeaders() Get the Via list of headers (null if one does not exist).
boolean	hasContent() Return true if this message has a body.
boolean	hasFromTag() Return true if the message has a From header tag.
int	hashCode() Override the hashcode method ( see issue # 55 ) Note that if you try to use this method before you assemble a valid request, you will get a constant ( -1 ).
boolean	hasHeader(String headerName) Return true if the SIPMessage has a header of the given name.
boolean	hasToTag() Return true if the message has a To header tag.
static boolean	isRequestHeader(SIPHeader sipHeader) Return true if the header belongs only in a Request.
static boolean	isResponseHeader(SIPHeader sipHeader) Return true if the header belongs only in a response.
boolean	match(Object other) Template match for SIP messages.
void	merge(Object template) Merge a request with a template
void	removeContent() Remove the message content if it exists.
void	removeFirst(String headerName) Removes the first header from a list of headers.
void	removeHeader(String headerName) Remove all headers given its name.
void	removeHeader(String headerName, boolean top) Remove a header given its name.
void	removeLast(String headerName) Removes the last header from a list of headers.
void	setCallId(CallIdHeader callId) Set the call id header.
void	setCallId(String callId) Get the CallID header (null if one does not exist)
void	setContent(Object content, ContentTypeHeader contentTypeHeader) Set the message content after converting the given object to a String.
void	setContentDisposition(ContentDispositionHeader contentDispositionHeader) Set the content disposition header.
void	setContentEncoding(ContentEncodingHeader contentEncodingHeader) Sets the ContentEncodingHeader of this Message.
void	setContentLanguage(ContentLanguageHeader contentLanguageHeader) Sets the ContentLanguageHeader of this Message.
void	setContentLength(ContentLengthHeader contentLength) Set the content length header.
void	setCSeq(CSeqHeader cseqHeader) Set the CSeq header.
void	setExpires(ExpiresHeader expiresHeader) Set the expiresHeader
void	setFrom(FromHeader from)
void	setFromTag(String tag) Set the From Tag.
void	setHeader(Header sipHeader) Attach a header (replacing the original header).
void	setHeader(SIPHeaderList sipHeaderList) Set the header given a list of headers.
void	setHeaders(List headers) Set a header from a linked list of headers.
void	setMaxForwards(MaxForwardsHeader maxForwards) Set the max forwards header.
void	setMessageContent(byte[] content) Set the message content as an array of bytes.
void	setMessageContent(String content) Set the message content for this message.
void	setMessageContent(String type, String subType, byte[] messageContent) Set the message content for a given type and subtype.
void	setMessageContent(String type, String subType, String messageContent) Set the message content given type and subtype.
abstract void	setSIPVersion(String sipVersion) Sets the protocol version of SIP being used by this Message.
void	setSize(int size) Set the size of all the headers.
void	setTo(ToHeader to)
void	setToTag(String tag) Set the to tag.
void	setVia(List viaList) Set A list of via headers.
abstract String	toString() Gets string representation of Message

Methods inherited from class gov.nist.javax.sip.message.MessageObject

dbgPrint, dbgPrint

Methods inherited from class gov.nist.core.GenericObject

debugDump, getClassFromName, getMatcher, isMySubclass, makeClone, setMatcher

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SIPMessage

public SIPMessage()

Constructor: Initializes lists and list headers. All the headers for which there can be multiple occurances in a message are derived from the SIPHeaderListClass. All singleton headers are derived from SIPHeader class.

Method Detail

isRequestHeader

public static boolean isRequestHeader(SIPHeader sipHeader)

Return true if the header belongs only in a Request.

Parameters:

sipHeader - is the header to test.

isResponseHeader

public static boolean isResponseHeader(SIPHeader sipHeader)

Return true if the header belongs only in a response.

Parameters:

sipHeader - is the header to test.

getMessageAsEncodedStrings

public LinkedList getMessageAsEncodedStrings()

Get the headers as a linked list of encoded Strings

Returns:

a linked list with each element of the list containing a string encoded header in canonical form.

encodeMessage

public abstract String encodeMessage()

Encode all the headers except the contents. For debug logging.

getDialogId

public abstract String getDialogId(boolean isServerTransaction)

Get A dialog identifier constructed from this messsage. This is an id that can be used to identify dialogs.

Parameters:

isServerTransaction - is a flag that indicates whether this is a server transaction.

match

public boolean match(Object other)

Template match for SIP messages. The matchObj is a SIPMessage template to match against. This method allows you to do pattern matching with incoming SIP messages. Null matches wild card.

Parameters:

other - is the match template to match against.

Returns:

true if a match occured and false otherwise.

merge

public void merge(Object template)

Merge a request with a template

Parameters:

template - -- template to merge with.

encode

public String encode()

Encode this message as a string. This is more efficient when the payload is a string (rather than a binary array of bytes). If the payload cannot be encoded as a UTF-8 string then it is simply ignored (will not appear in the encoded message).

Specified by:

encode in class MessageObject

Returns:

The Canonical String representation of the message (including the canonical string representation of the SDP payload if it exists).

encodeAsBytes

public byte[] encodeAsBytes()

Encode the message as a byte array. Use this when the message payload is a binary byte array.

Returns:

The Canonical byte array representation of the message (including the canonical byte array representation of the SDP payload if it exists all in one contiguous byte array).

clone

public Object clone()

clone this message (create a new deep physical copy). All headers in the message are cloned. You can modify the cloned copy without affecting the original. The content is handled as follows: If the content is a String, or a byte array, a new copy of the content is allocated and copied over. If the content is an Object that supports the clone method, then the clone method is invoked and the cloned content is the new content. Otherwise, the content of the new message is set equal to the old one.

Specified by:

clone in interface Message

Returns:

A cloned copy of this object.

debugDump

public String debugDump()

Get the string representation of this header (for pretty printing the generated structure).

Overrides:

debugDump in class MessageObject

Returns:

Formatted string representation of the object. Note that this is NOT the same as encode(). This is used mainly for debugging purposes.

setHeader

public void setHeader(Header sipHeader)

Attach a header (replacing the original header).

Specified by:

setHeader in interface Message

Parameters:

sipHeader - SIPHeader that replaces a header of the same type.

setHeaders

public void setHeaders(List headers)

Set a header from a linked list of headers.

Parameters:

headers - -- a list of headers to set.

attachHeader

public void attachHeader(SIPHeader h,
                         boolean replaceflag)
                  throws SIPDuplicateHeaderException

Attach a header to the end of the existing headers in this SIPMessage structure. This is equivalent to the attachHeader(SIPHeader,replaceflag,false); which is the normal way in which headers are attached. This was added in support of JAIN-SIP.

Parameters:

h - header to attach.

replaceflag - if true then replace a header if it exists.

Throws:

SIPDuplicateHeaderException - If replaceFlag is false and only a singleton header is allowed (fpr example CSeq).

attachHeader

public void attachHeader(SIPHeader header,
                         boolean replaceFlag,
                         boolean top)
                  throws SIPDuplicateHeaderException

Attach the header to the SIP Message structure at a specified position in its list of headers.

Parameters:

header - Header to attach.

replaceFlag - If true then replace the existing header.

top - Location in the header list to insert the header.

Throws:

SIPDuplicateHeaderException - if the header is of a type that cannot tolerate duplicates and one of this type already exists (e.g. CSeq header).

IndexOutOfBoundsException - If the index specified is greater than the number of headers that are in this message.

removeHeader

public void removeHeader(String headerName,
                         boolean top)

Remove a header given its name. If multiple headers of a given name are present then the top flag determines which end to remove headers from.

Parameters:

headerName - is the name of the header to remove.

top - -- flag that indicates which end of header list to process.

removeHeader

public void removeHeader(String headerName)

Remove all headers given its name.

Specified by:

removeHeader in interface Message

Parameters:

headerName - is the name of the header to remove.

getTransactionId

public String getTransactionId()

Generate (compute) a transaction ID for this SIP message.

Returns:

A string containing the concatenation of various portions of the From,To,Via and RequestURI portions of this message as specified in RFC 2543: All responses to a request contain the same values in the Call-ID, CSeq, To, and From fields (with the possible addition of a tag in the To field (section 10.43)). This allows responses to be matched with requests. Incorporates a bug fix for a bug sent in by Gordon Ledgard of IPera for generating transactionIDs when no port is present in the via header. Incorporates a bug fix for a bug report sent in by Chris Mills of Nortel Networks (converts to lower case when returning the transaction identifier).

hashCode

public int hashCode()

Override the hashcode method ( see issue # 55 ) Note that if you try to use this method before you assemble a valid request, you will get a constant ( -1 ). Beware of placing any half formed requests in a table.

Specified by:

hashCode in interface Message

hasContent

public boolean hasContent()

Return true if this message has a body.

getHeaders

public ListIterator getHeaders()

Return an iterator for the list of headers in this message.

Returns:

an Iterator for the headers of this message.

getHeader

public Header getHeader(String headerName)

Get the first header of the given name.

Specified by:

getHeader in interface Message

Parameters:

headerName - the new string name of Header type requested.

Returns:

header -- the first header of the given name.

getContentTypeHeader

public ContentType getContentTypeHeader()

Get the contentType header (null if one does not exist).

Returns:

contentType header

getFrom

public FromHeader getFrom()

Get the from header.

Returns:

-- the from header.

getErrorInfoHeaders

public ErrorInfoList getErrorInfoHeaders()

Get the ErrorInfo list of headers (null if one does not exist).

Returns:

List containing ErrorInfo headers.

getContactHeaders

public ContactList getContactHeaders()

Get the Contact list of headers (null if one does not exist).

Returns:

List containing Contact headers.

getContactHeader

public Contact getContactHeader()

Get the contact header ( the first contact header) which is all we need for the most part.

getViaHeaders

public ViaList getViaHeaders()

Get the Via list of headers (null if one does not exist).

Returns:

List containing Via headers.

setVia

public void setVia(List viaList)

Set A list of via headers.

Parameters:

viaList - a list of via headers to add.

setHeader

public void setHeader(SIPHeaderList sipHeaderList)

Set the header given a list of headers.

Parameters:

sipHeaderList - a headerList to set

getTopmostVia

public Via getTopmostVia()

Get the topmost via header.

Returns:

the top most via header if one exists or null if none exists.

getCSeq

public CSeqHeader getCSeq()

Get the CSeq list of header (null if one does not exist).

Returns:

CSeq header

getAuthorization

public Authorization getAuthorization()

Get the Authorization header (null if one does not exist).

Returns:

Authorization header.

getMaxForwards

public MaxForwardsHeader getMaxForwards()

Get the MaxForwards header (null if one does not exist).

Returns:

Max-Forwards header

setMaxForwards

public void setMaxForwards(MaxForwardsHeader maxForwards)

Set the max forwards header.

Parameters:

maxForwards - is the MaxForwardsHeader to set.

getRouteHeaders

public RouteList getRouteHeaders()

Get the Route List of headers (null if one does not exist).

Returns:

List containing Route headers

getCallId

public CallIdHeader getCallId()

Get the CallID header (null if one does not exist)

Returns:

Call-ID header .

setCallId

public void setCallId(CallIdHeader callId)

Set the call id header.

Parameters:

callId - call idHeader (what else could it be?)

setCallId

public void setCallId(String callId)
               throws ParseException

Get the CallID header (null if one does not exist)

Parameters:

callId - -- the call identifier to be assigned to the call id header

Throws:

ParseException

getRecordRouteHeaders

public RecordRouteList getRecordRouteHeaders()

Get the RecordRoute header list (null if one does not exist).

Returns:

Record-Route header

getTo

public ToHeader getTo()

Get the To header (null if one does not exist).

Returns:

To header

setTo

public void setTo(ToHeader to)

setFrom

public void setFrom(FromHeader from)

getContentLength

public ContentLengthHeader getContentLength()

Get the ContentLength header (null if one does not exist).

Specified by:

getContentLength in interface Message

Returns:

content-length header.

getMessageContent

public String getMessageContent()
                         throws UnsupportedEncodingException

Get the message body as a string. If the message contains a content type header with a specified charset, and if the payload has been read as a byte array, then it is returned encoded into this charset.

Returns:

Message body (as a string)

Throws:

UnsupportedEncodingException - if the platform does not support the charset specified in the content type header.

getRawContent

public byte[] getRawContent()

Get the message content as an array of bytes. If the payload has been read as a String then it is decoded using the charset specified in the content type header if it exists. Otherwise, it is encoded using the default encoding which is UTF-8.

Specified by:

getRawContent in interface Message

Returns:

an array of bytes that is the message payload.

setMessageContent

public void setMessageContent(String type,
                              String subType,
                              String messageContent)

Set the message content given type and subtype.

Parameters:

type - is the message type (eg. application)

subType - is the message sybtype (eg. sdp)

messageContent - is the messge content as a string.

setContent

public void setContent(Object content,
                       ContentTypeHeader contentTypeHeader)
                throws ParseException

Set the message content after converting the given object to a String.

Specified by:

setContent in interface Message

Parameters:

content - -- content to set.

contentTypeHeader - -- content type header corresponding to content.

Throws:

ParseException - which signals that an error has been reached unexpectedly while parsing the body.

getContent

public Object getContent()

Get the content of the header.

Specified by:

getContent in interface Message

Returns:

the content of the sip message.

setMessageContent

public void setMessageContent(String type,
                              String subType,
                              byte[] messageContent)

Set the message content for a given type and subtype.

Parameters:

type - is the messge type.

subType - is the message subType.

messageContent - is the message content as a byte array.

setMessageContent

public void setMessageContent(String content)

Set the message content for this message.

Parameters:

content - Message body as a string.

setMessageContent

public void setMessageContent(byte[] content)

Set the message content as an array of bytes.

Parameters:

content - is the content of the message as an array of bytes.

removeContent

public void removeContent()

Remove the message content if it exists.

Specified by:

removeContent in interface Message

getHeaders

public ListIterator getHeaders(String headerName)

Get a SIP header or Header list given its name.

Specified by:

getHeaders in interface Message

Parameters:

headerName - is the name of the header to get.

Returns:

a header or header list that contians the retrieved header.

hasHeader

public boolean hasHeader(String headerName)

Return true if the SIPMessage has a header of the given name.

Parameters:

headerName - is the header name for which we are testing.

Returns:

true if the header is present in the message

hasFromTag

public boolean hasFromTag()

Return true if the message has a From header tag.

Returns:

true if the message has a from header and that header has a tag.

hasToTag

public boolean hasToTag()

Return true if the message has a To header tag.

Returns:

true if the message has a to header and that header has a tag.

getFromTag

public String getFromTag()

Return the from tag.

Returns:

the tag from the from header.

setFromTag

public void setFromTag(String tag)

Set the From Tag.

Parameters:

tag - -- tag to set in the from header.

setToTag

public void setToTag(String tag)

Set the to tag.

Parameters:

tag - -- tag to set.

getToTag

public String getToTag()

Return the to tag.

getFirstLine

public abstract String getFirstLine()

Return the encoded first line.

addHeader

public void addHeader(Header sipHeader)

Add a SIP header.

Specified by:

addHeader in interface Message

Parameters:

sipHeader - -- sip header to add.

addUnparsed

public void addUnparsed(String unparsed)

Add a header to the unparsed list of headers.

Parameters:

unparsed - -- unparsed header to add to the list.

addHeader

public void addHeader(String sipHeader)

Add a SIP header.

Parameters:

sipHeader - -- string version of SIP header to add.

getUnrecognizedHeaders

public ListIterator getUnrecognizedHeaders()

Get a list containing the unrecognized headers.

Specified by:

getUnrecognizedHeaders in interface Message

Returns:

a linked list containing unrecongnized headers.

getHeaderNames

public ListIterator getHeaderNames()

Get the header names.

Specified by:

getHeaderNames in interface Message

Returns:

a list iterator to a list of header names. These are ordered in the same order as are present in the message.

equals

public boolean equals(Object other)

Compare for equality.

Specified by:

equals in interface Message

Parameters:

other - -- the other object to compare with.

Returns:

true if the objects are euqal and false otherwise

getContentDisposition

public ContentDispositionHeader getContentDisposition()

get content disposition header or null if no such header exists.

Specified by:

getContentDisposition in interface Message

Returns:

the contentDisposition header

getContentEncoding

public ContentEncodingHeader getContentEncoding()

get the content encoding header.

Specified by:

getContentEncoding in interface Message

Returns:

the contentEncoding header.

getContentLanguage

public ContentLanguageHeader getContentLanguage()

Get the contentLanguage header.

Specified by:

getContentLanguage in interface Message

Returns:

the content language header.

getExpires

public ExpiresHeader getExpires()

Get the exipres header.

Specified by:

getExpires in interface Message

Returns:

the expires header or null if one does not exist.

setExpires

public void setExpires(ExpiresHeader expiresHeader)

Set the expiresHeader

Specified by:

setExpires in interface Message

Parameters:

expiresHeader - -- the expires header to set.

setContentDisposition

public void setContentDisposition(ContentDispositionHeader contentDispositionHeader)

Set the content disposition header.

Specified by:

setContentDisposition in interface Message

Parameters:

contentDispositionHeader - -- content disposition header.

setContentEncoding

public void setContentEncoding(ContentEncodingHeader contentEncodingHeader)

Description copied from interface: Message

Sets the ContentEncodingHeader of this Message. This overrides the ContentEncodingHeader set using the setHeaders method. If no ContentEncodingHeader exists in this message this ContentEncodingHeader is added to the end of the Header List.

Specified by:

setContentEncoding in interface Message

Parameters:

contentEncodingHeader - the new ContentEncodingHeader object containing the content encoding values of this Message.

setContentLanguage

public void setContentLanguage(ContentLanguageHeader contentLanguageHeader)

Description copied from interface: Message

Sets the ContentLanguageHeader of this Message. This overrides the ContentLanguageHeader set using the setHeaders method. If no ContentLanguageHeader exists in this message this ContentLanguageHeader is added to the end of the Header List.

Specified by:

setContentLanguage in interface Message

Parameters:

contentLanguageHeader - the new ContentLanguageHeader object containing the content language value of this Message.

setContentLength

public void setContentLength(ContentLengthHeader contentLength)

Set the content length header.

Specified by:

setContentLength in interface Message

Parameters:

contentLength - -- content length header.

setSize

public void setSize(int size)

Set the size of all the headers. This is for book keeping. Called by the parser.

Parameters:

size - -- size of the headers.

getSize

public int getSize()

addLast

public void addLast(Header header)
             throws SipException,
                    NullPointerException

Description copied from interface: Message

Adds the new Header to the end of existing list of Headers contained in this Message. The Header is added to the end of the List and will appear in that order in the SIP Message.

Required Headers that are singletons should not be added to the message as they already exist in the message and therefore should be changed using the Message.setHeader(Header) method. This does the same thing as addHeader in all cases including the Via header. Add a header explicitly to the end of a list of headers.

Specified by:

addLast in interface Message

Parameters:

header - -- the new Header to be added to the end of the existing list of headers

Throws:

NullPointerException - -- if the argument is null.

SipException - -- if the header is a singleton and an instance of the header already exists.

addFirst

public void addFirst(Header header)
              throws SipException,
                     NullPointerException

Description copied from interface: Message

Adds the new Header to the head of the existing list of Headers contained in this Message. The Header is added to the head of the List and will appear in that order in the SIP Message.

Required Headers that are singletons should not be added to the message as they already exist in the message and therefore should be changed using the Message.setHeader(Header) method.

Specified by:

addFirst in interface Message

Parameters:

header - the new Header to be added to the existing Headers List.

Throws:

SipException - -- if the header to be added is a singleton and an instance of the header already exists.

NullPointerException - -- if the argument is null.

removeFirst

public void removeFirst(String headerName)
                 throws NullPointerException

Description copied from interface: Message

Removes the first header from a list of headers. If there's only one header of this kind, then it is removed from the message.

Specified by:

removeFirst in interface Message

Parameters:

headerName - the name of the header to be removed.

Throws:

NullPointerException - -- if the arg is null

removeLast

public void removeLast(String headerName)

Description copied from interface: Message

Removes the last header from a list of headers. If there's only one header of this kind, then it is removed from the message.

Specified by:

removeLast in interface Message

Parameters:

headerName - the name of the header to be removed.

setCSeq

public void setCSeq(CSeqHeader cseqHeader)

Set the CSeq header.

Parameters:

cseqHeader - -- CSeq Header.

setSIPVersion

public abstract void setSIPVersion(String sipVersion)
                            throws ParseException

Description copied from interface: Message

Sets the protocol version of SIP being used by this Message.

Specified by:

setSIPVersion in interface Message

Parameters:

sipVersion - the new String object containing the version of the SIP Protocol of this Message.

Throws:

ParseException - which signals that an error has been reached unexpectedly while parsing the version argument.

getSIPVersion

public abstract String getSIPVersion()

Description copied from interface: Message

Gets the protocol version of SIP being used by this Message.

Specified by:

getSIPVersion in interface Message

Returns:

the protocol version of the SIP protocol of this message.

toString

public abstract String toString()

Description copied from interface: Message

Gets string representation of Message

Specified by:

toString in interface Message