org.lastbamboo.common.sip.stack.message
Class SipMessageUtils

java.lang.Object
  org.lastbamboo.common.sip.stack.message.SipMessageUtils

public class SipMessageUtils
extends Object

Collection of utility methods for handling SIP messages.

Method Summary

static Map<String,SipHeader>	convertHeaders(Map<String,List<String>> headers)
static int	extractContentLength(Map<String,SipHeader> headers)
static String	extractCSeqMethod(SipHeader cseq)
static int	extractCSeqNumber(SipMessage message)
static Map<String,String>	extractHeaderParams(String headerValue)
static String	extractName(String nameValue)
static InetSocketAddress	extractNextHopFromVia(SipMessage message) Utility method for extracting the host and port information from the topmost Via header in a SIP message.
static InetAddress	extractSentByFromVia(SipHeaderValue via) Extracts the sent-by host from a Via header.
static URI	extractUri(SipHeader header) Extracts the URI from a header value.
static URI	extractUriFromRequestLine(SipMessage request) Extracts the URI from the request line of a SIP message.
static String	extractValue(String nameValue)
static String	toParamString(Map paramsMap) Creates a paramater string from the specified map of parameter names and values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

toParamString

public static String toParamString(Map paramsMap)

Creates a paramater string from the specified map of parameter names and values.

Parameters:

paramsMap - A map of parameter names to values.

Returns:

The parameter names and values as a string.

extractName

public static String extractName(String nameValue)
                          throws IOException

Throws:

IOException

extractValue

public static String extractValue(String nameValue)
                           throws IOException

Throws:

IOException

convertHeaders

public static Map<String,SipHeader> convertHeaders(Map<String,List<String>> headers)

extractHeaderParams

public static Map<String,String> extractHeaderParams(String headerValue)
                                              throws IOException

Throws:

IOException

extractCSeqMethod

public static String extractCSeqMethod(SipHeader cseq)

extractUri

public static URI extractUri(SipHeader header)

Extracts the URI from a header value. This method assumes the URI is within an opening "<" and a closing ">".

Parameters:

header - The header.

Returns:

A new URI from the header.

extractCSeqNumber

public static int extractCSeqNumber(SipMessage message)

extractUriFromRequestLine

public static URI extractUriFromRequestLine(SipMessage request)
                                     throws IOException

Extracts the URI from the request line of a SIP message. The request line must meet the form specified in RFC 3261, as in:

Request-Line = Method SP Request-URI SP SIP-Version CRLF

Parameters:

request - The SIP request.

Returns:

The request URI from the request line.

Throws:

IOException - If the request line does not match the expected syntax.

extractSentByFromVia

public static InetAddress extractSentByFromVia(SipHeaderValue via)
                                        throws UnknownHostException

Extracts the sent-by host from a Via header.

Parameters:

via - The Via header to extract the sent-by host from.

Returns:

The address for the host.

Throws:

UnknownHostException - If there's an error readin the host in the expected format.

extractNextHopFromVia

public static InetSocketAddress extractNextHopFromVia(SipMessage message)
                                               throws IOException

Utility method for extracting the host and port information from the topmost Via header in a SIP message.

Parameters:

message - The SIP message to extract the host and port from.

Returns:

The host and port indicated in the topmost Via.

Throws:

IOException - If there's an unexpected error reading the data.

extractContentLength

public static int extractContentLength(Map<String,SipHeader> headers)