/**
* parse the String message
*
* @return SIPHeader (AcceptEncoding object)
* @throws ParseException if the message does not respect the spec.
*/
public SIPHeader parse() throws ParseException {
AcceptEncodingList acceptEncodingList = new AcceptEncodingList();
if (debug) dbg_enter("AcceptEncodingParser.parse");
try {
headerName(TokenTypes.ACCEPT_ENCODING);
// empty body is fine for this header.
if (lexer.lookAhead(0) == '\n') {
AcceptEncoding acceptEncoding = new AcceptEncoding();
acceptEncodingList.add(acceptEncoding);
} else {
while (lexer.lookAhead(0) != '\n') {
AcceptEncoding acceptEncoding = new AcceptEncoding();
if (lexer.lookAhead(0) != ';') {
// Content-Coding:
lexer.match(TokenTypes.ID);
Token value = lexer.getNextToken();
acceptEncoding.setEncoding(value.getTokenValue());
}
while (lexer.lookAhead(0) == ';') {
this.lexer.match(';');
this.lexer.SPorHT();
this.lexer.match('q');
this.lexer.SPorHT();
this.lexer.match('=');
this.lexer.SPorHT();
lexer.match(TokenTypes.ID);
Token value = lexer.getNextToken();
try {
float qv = Float.parseFloat(value.getTokenValue());
acceptEncoding.setQValue(qv);
} catch (NumberFormatException ex) {
throw createParseException(ex.getMessage());
} catch (InvalidArgumentException ex) {
throw createParseException(ex.getMessage());
}
this.lexer.SPorHT();
}
acceptEncodingList.add(acceptEncoding);
if (lexer.lookAhead(0) == ',') {
this.lexer.match(',');
this.lexer.SPorHT();
}
}
}
return acceptEncodingList;
} finally {
if (debug) dbg_leave("AcceptEncodingParser.parse");
}
}
/**
* Attach JAIN-SIP <tt>SipProvider</tt> and <tt>ListeningPoint</tt> to the stack either for clear
* communications or TLS. Clear UDP and TCP <tt>ListeningPoint</tt>s are not handled separately as
* the former is a fallback for the latter (depending on the size of the data transmitted). Both
* <tt>ListeningPoint</tt>s must be bound to the same address and port in order for the related
* <tt>SipProvider</tt> to be created. If a UDP or TCP <tt>ListeningPoint</tt> cannot bind, retry
* for both on another port.
*
* @param preferredPort which port to try first to bind.
* @param retries how many times should we try to find a free port to bind
* @param secure whether to create the TLS SipProvider. or the clear UDP/TCP one.
* @throws TransportNotSupportedException in case we try to create a provider for a transport not
* currently supported by jain-sip
* @throws InvalidArgumentException if we try binding to an illegal port (which we won't)
* @throws ObjectInUseException if another <tt>SipProvider</tt> is already associated with this
* <tt>ListeningPoint</tt>.
* @throws TransportAlreadySupportedException if there is already a ListeningPoint associated to
* this <tt>SipProvider</tt> with the same transport of the <tt>ListeningPoint</tt>.
* @throws TooManyListenersException if we try to add a new <tt>SipListener</tt> with a
* <tt>SipProvider</tt> when one was already registered.
*/
private void createProvider(int preferredPort, int retries, boolean secure)
throws TransportNotSupportedException, InvalidArgumentException, ObjectInUseException,
TransportAlreadySupportedException, TooManyListenersException {
String context = (secure ? "TLS: " : "clear UDP/TCP: ");
if (retries < 0) {
// very unlikely to happen with the default 50 retries
logger.error(context + "couldn't find free ports to listen on.");
return;
}
ListeningPoint tlsLP = null;
ListeningPoint udpLP = null;
ListeningPoint tcpLP = null;
try {
if (secure) {
tlsLP =
this.stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY, preferredPort, ListeningPoint.TLS);
if (logger.isTraceEnabled()) logger.trace("TLS secure ListeningPoint has been created.");
this.secureJainSipProvider = this.stack.createSipProvider(tlsLP);
this.secureJainSipProvider.addSipListener(this);
} else {
udpLP =
this.stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY, preferredPort, ListeningPoint.UDP);
tcpLP =
this.stack.createListeningPoint(
NetworkUtils.IN_ADDR_ANY, preferredPort, ListeningPoint.TCP);
if (logger.isTraceEnabled())
logger.trace("UDP and TCP clear ListeningPoints have " + "been created.");
this.clearJainSipProvider = this.stack.createSipProvider(udpLP);
this.clearJainSipProvider.addListeningPoint(tcpLP);
this.clearJainSipProvider.addSipListener(this);
}
if (logger.isTraceEnabled()) logger.trace(context + "SipProvider has been created.");
} catch (InvalidArgumentException ex) {
// makes sure we didn't leave an open listener
// as both UDP and TCP listener have to bind to the same port
if (tlsLP != null) this.stack.deleteListeningPoint(tlsLP);
if (udpLP != null) this.stack.deleteListeningPoint(udpLP);
if (tcpLP != null) this.stack.deleteListeningPoint(tcpLP);
// FIXME: "Address already in use" is not working
// as ex.getMessage() displays in the locale language in SC
// (getMessage() is always supposed to be English though)
// this should be a temporary workaround
// if (ex.getMessage().indexOf("Address already in use") != -1)
// another software is probably using the port
if (ex.getCause() instanceof java.io.IOException) {
if (logger.isDebugEnabled())
logger.debug("Port " + preferredPort + " seems in use for either TCP or UDP.");
// tries again on a new random port
int currentlyTriedPort = NetworkUtils.getRandomPortNumber();
if (logger.isDebugEnabled()) logger.debug("Retrying bind on port " + currentlyTriedPort);
this.createProvider(currentlyTriedPort, retries - 1, secure);
} else throw ex;
}
}
/**
* parse the String message
*
* @return SIPHeader (RetryAfter object)
* @throws SIPParseException if the message does not respect the spec.
*/
public SIPHeader parse() throws ParseException {
if (debug) dbg_enter("RetryAfterParser.parse");
RetryAfter retryAfter = new RetryAfter();
try {
headerName(TokenTypes.RETRY_AFTER);
// mandatory delatseconds:
String value = lexer.number();
try {
int ds = Integer.parseInt(value);
retryAfter.setRetryAfter(ds);
} catch (NumberFormatException ex) {
throw createParseException(ex.getMessage());
} catch (InvalidArgumentException ex) {
throw createParseException(ex.getMessage());
}
this.lexer.SPorHT();
if (lexer.lookAhead(0) == '(') {
String comment = this.lexer.comment();
retryAfter.setComment(comment);
}
this.lexer.SPorHT();
while (lexer.lookAhead(0) == ';') {
this.lexer.match(';');
this.lexer.SPorHT();
lexer.match(TokenTypes.ID);
Token token = lexer.getNextToken();
value = token.getTokenValue();
if (value.equalsIgnoreCase("duration")) {
this.lexer.match('=');
this.lexer.SPorHT();
value = lexer.number();
try {
int duration = Integer.parseInt(value);
retryAfter.setDuration(duration);
} catch (NumberFormatException ex) {
throw createParseException(ex.getMessage());
} catch (InvalidArgumentException ex) {
throw createParseException(ex.getMessage());
}
} else {
this.lexer.SPorHT();
this.lexer.match('=');
this.lexer.SPorHT();
lexer.match(TokenTypes.ID);
Token secondToken = lexer.getNextToken();
String secondValue = secondToken.getTokenValue();
retryAfter.setParameter(value, secondValue);
}
this.lexer.SPorHT();
}
} finally {
if (debug) dbg_leave("RetryAfterParser.parse");
}
return retryAfter;
}
