/**
* Creates a default SIPResponse message for this request. Note You must add the necessary tags to
* outgoing responses if need be. For efficiency, this method does not clone the incoming request.
* If you want to modify the outgoing response, be sure to clone the incoming request as the
* headers are shared and any modification to the headers of the outgoing response will result in
* a modification of the incoming request. Tag fields are just copied from the incoming request.
* Contact headers are removed from the incoming request. Added by Jeff Keyser. Route headers are
* not added to the response.
*
* @param statusCode Status code for the response.
* @param reasonPhrase Reason phrase for this response.
* @return A SIPResponse with the status and reason supplied, and a copy of all the original
* headers from this request except the ones that are not supposed to be part of the response
* .
*/
public SIPResponse createResponse(int statusCode, String reasonPhrase) {
SIPResponse newResponse;
Iterator headerIterator;
SIPHeader nextHeader;
newResponse = new SIPResponse();
try {
newResponse.setStatusCode(statusCode);
} catch (ParseException ex) {
throw new IllegalArgumentException("Bad code " + statusCode);
}
if (reasonPhrase != null) newResponse.setReasonPhrase(reasonPhrase);
else newResponse.setReasonPhrase(SIPResponse.getReasonPhrase(statusCode));
headerIterator = getHeaders();
while (headerIterator.hasNext()) {
nextHeader = (SIPHeader) headerIterator.next();
if (nextHeader instanceof From
|| nextHeader instanceof To
|| nextHeader instanceof ViaList
|| nextHeader instanceof CallID
|| (nextHeader instanceof RecordRouteList && mustCopyRR(statusCode))
|| nextHeader instanceof CSeq
// We just copy TimeStamp for all headers (not just 100).
|| nextHeader instanceof TimeStamp) {
try {
newResponse.attachHeader((SIPHeader) nextHeader.clone(), false);
} catch (SIPDuplicateHeaderException e) {
e.printStackTrace();
}
}
}
if (MessageFactoryImpl.getDefaultServerHeader() != null) {
newResponse.setHeader(MessageFactoryImpl.getDefaultServerHeader());
}
if (newResponse.getStatusCode() == 100) {
// Trying is never supposed to have the tag parameter set.
newResponse.getTo().removeParameter("tag");
}
ServerHeader server = MessageFactoryImpl.getDefaultServerHeader();
if (server != null) {
newResponse.setHeader(server);
}
return newResponse;
}
/**
* Gets invoked by the parser as a callback on successful message parsing (i.e. no parser errors).
*
* @param sipMessage Message to process (this calls the application for processing the message).
* <p>Jvb: note that this code is identical to TCPMessageChannel, refactor some day
*/
public void processMessage(SIPMessage sipMessage) throws Exception {
try {
if (sipMessage.getFrom() == null
|| sipMessage.getTo() == null
|| sipMessage.getCallId() == null
|| sipMessage.getCSeq() == null
|| sipMessage.getViaHeaders() == null) {
if (logger.isLoggingEnabled()) {
String badmsg = sipMessage.encode();
logger.logError("bad message " + badmsg);
logger.logError(">>> Dropped Bad Msg");
}
return;
}
sipMessage.setRemoteAddress(this.peerAddress);
sipMessage.setRemotePort(this.getPeerPort());
sipMessage.setLocalAddress(this.getMessageProcessor().getIpAddress());
sipMessage.setLocalPort(this.getPort());
// Issue 3: https://telestax.atlassian.net/browse/JSIP-3
sipMessage.setPeerPacketSourceAddress(this.peerAddress);
sipMessage.setPeerPacketSourcePort(this.peerPort);
ViaList viaList = sipMessage.getViaHeaders();
// For a request
// first via header tells where the message is coming from.
// For response, this has already been recorded in the outgoing
// message.
if (sipMessage instanceof SIPRequest) {
Via v = (Via) viaList.getFirst();
// the peer address and tag it appropriately.
Hop hop = sipStack.addressResolver.resolveAddress(v.getHop());
this.peerProtocol = v.getTransport();
// if(peerPortAdvertisedInHeaders <= 0) {
int hopPort = v.getPort();
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug(
"hop port = "
+ hopPort
+ " for request "
+ sipMessage
+ " for this channel "
+ this
+ " key "
+ key);
}
if (hopPort <= 0) {
// if port is 0 we assume the default port for TCP
this.peerPortAdvertisedInHeaders = 5060;
} else {
this.peerPortAdvertisedInHeaders = hopPort;
}
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug(
"3.Storing peerPortAdvertisedInHeaders = "
+ peerPortAdvertisedInHeaders
+ " for this channel "
+ this
+ " key "
+ key);
}
// }
// may be needed to reconnect, when diff than peer address
if (peerAddressAdvertisedInHeaders == null) {
peerAddressAdvertisedInHeaders = hop.getHost();
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug(
"3.Storing peerAddressAdvertisedInHeaders = "
+ peerAddressAdvertisedInHeaders
+ " for this channel "
+ this
+ " key "
+ key);
}
}
try {
if (mySock != null) { // selfrouting makes socket = null
// https://jain-sip.dev.java.net/issues/show_bug.cgi?id=297
this.peerAddress = mySock.getInetAddress();
}
// Check to see if the received parameter matches
// the peer address and tag it appropriately.
// JvB: dont do this. It is both costly and incorrect
// Must set received also when it is a FQDN, regardless
// whether
// it resolves to the correct IP address
// InetAddress sentByAddress =
// InetAddress.getByName(hop.getHost());
// JvB: if sender added 'rport', must always set received
boolean hasRPort = v.hasParameter(Via.RPORT);
if (!hasRPort && v.getPort() != peerPort) {
// https://github.com/RestComm/jain-sip/issues/79
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug(
"setting rport since viaPort "
+ v.getPort()
+ " different than peerPacketSourcePort "
+ peerPort
+ " so that the response can be routed back");
}
hasRPort = true;
}
if (hasRPort || !hop.getHost().equals(this.peerAddress.getHostAddress())) {
v.setParameter(Via.RECEIVED, this.peerAddress.getHostAddress());
}
// @@@ hagai
// JvB: technically, may only do this when Via already
// contains
// rport
v.setParameter(Via.RPORT, Integer.toString(this.peerPort));
} catch (java.text.ParseException ex) {
InternalErrorHandler.handleException(ex);
}
// Use this for outgoing messages as well.
if (!this.isCached && mySock != null) { // self routing makes
// mySock=null
// https://jain-sip.dev.java.net/issues/show_bug.cgi?id=297
this.isCached = true;
int remotePort = ((java.net.InetSocketAddress) mySock.getRemoteSocketAddress()).getPort();
String key = IOHandler.makeKey(mySock.getInetAddress(), remotePort);
if (this.messageProcessor instanceof NioTcpMessageProcessor) {
// https://java.net/jira/browse/JSIP-475 don't use iohandler in case of NIO
// communications of the socket will leak in the iohandler sockettable
((NioTcpMessageProcessor) this.messageProcessor)
.nioHandler.putSocket(key, mySock.getChannel());
} else {
sipStack.ioHandler.putSocket(key, mySock);
}
// since it can close the socket it needs to be after the mySock usage otherwise
// it the socket will be disconnected and NPE will be thrown in some edge cases
((ConnectionOrientedMessageProcessor) this.messageProcessor).cacheMessageChannel(this);
}
}
// Foreach part of the request header, fetch it and process it
long receptionTime = System.currentTimeMillis();
//
if (sipMessage instanceof SIPRequest) {
// This is a request - process the request.
SIPRequest sipRequest = (SIPRequest) sipMessage;
// Create a new sever side request processor for this
// message and let it handle the rest.
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG)) {
logger.logDebug("----Processing Message---");
}
if (logger.isLoggingEnabled(ServerLogger.TRACE_MESSAGES)) {
sipStack.serverLogger.logMessage(
sipMessage,
this.getPeerHostPort().toString(),
this.messageProcessor.getIpAddress().getHostAddress()
+ ":"
+ this.messageProcessor.getPort(),
false,
receptionTime);
}
// Check for reasonable size - reject message
// if it is too long.
if (sipStack.getMaxMessageSize() > 0
&& sipRequest.getSize()
+ (sipRequest.getContentLength() == null
? 0
: sipRequest.getContentLength().getContentLength())
> sipStack.getMaxMessageSize()) {
SIPResponse sipResponse = sipRequest.createResponse(SIPResponse.MESSAGE_TOO_LARGE);
byte[] resp = sipResponse.encodeAsBytes(this.getTransport());
this.sendMessage(resp, false);
throw new Exception("Message size exceeded");
}
String sipVersion = ((SIPRequest) sipMessage).getRequestLine().getSipVersion();
if (!sipVersion.equals("SIP/2.0")) {
SIPResponse versionNotSupported =
((SIPRequest) sipMessage)
.createResponse(Response.VERSION_NOT_SUPPORTED, "Bad SIP version " + sipVersion);
this.sendMessage(versionNotSupported.encodeAsBytes(this.getTransport()), false);
throw new Exception("Bad version ");
}
String method = ((SIPRequest) sipMessage).getMethod();
String cseqMethod = ((SIPRequest) sipMessage).getCSeqHeader().getMethod();
if (!method.equalsIgnoreCase(cseqMethod)) {
SIPResponse sipResponse = sipRequest.createResponse(SIPResponse.BAD_REQUEST);
byte[] resp = sipResponse.encodeAsBytes(this.getTransport());
this.sendMessage(resp, false);
throw new Exception("Bad CSeq method" + sipMessage + " method " + method);
}
// Stack could not create a new server request interface.
// maybe not enough resources.
ServerRequestInterface sipServerRequest = sipStack.newSIPServerRequest(sipRequest, this);
if (sipServerRequest != null) {
try {
sipServerRequest.processRequest(sipRequest, this);
} finally {
if (sipServerRequest instanceof SIPTransaction) {
SIPServerTransaction sipServerTx = (SIPServerTransaction) sipServerRequest;
if (!sipServerTx.passToListener()) ((SIPTransaction) sipServerRequest).releaseSem();
}
}
} else {
if (sipStack.sipMessageValve
== null) { // Allow message valves to nullify messages without error
SIPResponse response = sipRequest.createResponse(Response.SERVICE_UNAVAILABLE);
RetryAfter retryAfter = new RetryAfter();
// Be a good citizen and send a decent response code back.
try {
retryAfter.setRetryAfter((int) (10 * (Math.random())));
response.setHeader(retryAfter);
this.sendMessage(response);
} catch (Exception e) {
// IGNore
}
if (logger.isLoggingEnabled())
logger.logWarning("Dropping message -- could not acquire semaphore");
}
}
} else {
SIPResponse sipResponse = (SIPResponse) sipMessage;
// JvB: dont do this
// if (sipResponse.getStatusCode() == 100)
// sipResponse.getTo().removeParameter("tag");
try {
sipResponse.checkHeaders();
} catch (ParseException ex) {
if (logger.isLoggingEnabled())
logger.logError("Dropping Badly formatted response message >>> " + sipResponse);
return;
}
// This is a response message - process it.
// Check the size of the response.
// If it is too large dump it silently.
if (sipStack.getMaxMessageSize() > 0
&& sipResponse.getSize()
+ (sipResponse.getContentLength() == null
? 0
: sipResponse.getContentLength().getContentLength())
> sipStack.getMaxMessageSize()) {
if (logger.isLoggingEnabled(LogWriter.TRACE_DEBUG))
logger.logDebug("Message size exceeded");
return;
}
ServerResponseInterface sipServerResponse =
sipStack.newSIPServerResponse(sipResponse, this);
if (sipServerResponse != null) {
try {
if (sipServerResponse instanceof SIPClientTransaction
&& !((SIPClientTransaction) sipServerResponse).checkFromTag(sipResponse)) {
if (logger.isLoggingEnabled())
logger.logError("Dropping response message with invalid tag >>> " + sipResponse);
return;
}
sipServerResponse.processResponse(sipResponse, this);
} finally {
if (sipServerResponse instanceof SIPTransaction
&& !((SIPTransaction) sipServerResponse).passToListener()) {
// Note that the semaphore is released in event
// scanner if the
// request is actually processed by the Listener.
((SIPTransaction) sipServerResponse).releaseSem();
}
}
} else {
logger.logWarning(
"Application is blocked -- could not acquire semaphore -- dropping response");
}
}
} finally {
}
}
