/**
* Handle an exception - construct a sip reply and send it back to the caller.
*
* @param ex The exception thrown at us by our application.
*/
public void handleException(SIPServerException ex) {
// Return a parse error message to the client on the other end
// if he is still alive.
// ex.printStackTrace();
int rc = ex.getRC();
Request request = (Request) ex.getSIPMessage();
Response response;
String msgString = ex.getMessage();
if (rc != 0) {
response = request.createResponse(rc, msgString);
// messageFormatter.newResponse(rc,request,msgString);
try {
sendMessage(response);
} catch (IOException ioex) {
ServerLog.logException(ioex);
}
} else {
// Assume that the message has already been formatted.
try {
sendMessage(msgString);
} catch (IOException ioex) {
ServerLog.logException(ioex);
}
}
}
/**
* Exception processor for exceptions detected from the application.
*
* @param ex The exception that was generated.
*/
public void handleException(SIPServerException ex) {
// Return a parse error message to the client on the other end
// if he is still alive.
int rc = ex.getRC();
String msgString = ex.getMessage();
if (rc != 0) {
// Do we have a valid Return code ? --
// in this case format the message.
Request request = (Request) ex.getSIPMessage();
Response response = request.createResponse(rc);
try {
sendMessage(response);
} catch (IOException ioex) {
if (LogWriter.needsLogging) LogWriter.logException(ioex);
}
} else {
// Otherwise, message is already formatted --
// just return it
try {
sendMessage(msgString.getBytes(), false);
} catch (IOException ioex) {
if (LogWriter.needsLogging) LogWriter.logException(ioex);
}
}
}
/**
* Gets invoked by the parser as a callback on successful message parsing (i.e. no parser errors).
*
* @param sipMessage Mesage to process (this calls the application for processing the message).
*/
public void processMessage(Message sipMessage) {
if (!stack.isAlive()) {
if (LogWriter.needsLogging)
LogWriter.logMessage(
LogWriter.TRACE_DEBUG,
"MsgChannel " + this + " is dropping message as the stack is closing");
return; // drop messages when closing, avoid Exceptions
}
try {
if (LogWriter.needsLogging)
LogWriter.logMessage(
"[TCPMessageChannel]-> Processing incoming message: " + sipMessage.getFirstLine());
if (sipMessage.getFromHeader() == null
|| sipMessage.getTo() == null
|| sipMessage.getCallId() == null
|| sipMessage.getCSeqHeader() == null
|| sipMessage.getViaHeaders() == null) {
String badmsg = sipMessage.encode();
if (LogWriter.needsLogging) {
ServerLog.logMessage("bad message " + badmsg);
ServerLog.logMessage(">>> Dropped Bad Msg");
}
stack.logBadMessage(badmsg);
return;
}
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 Request) {
ViaHeader v = (ViaHeader) viaList.first();
if (v.hasPort()) {
viaPort = v.getPort();
} else {
viaPort = SIPMessageStack.DEFAULT_PORT;
}
this.peerProtocol = v.getTransport();
try {
if (peerPort == -1) peerPort = mySock.getPort();
this.peerAddress = mySock.getAddress();
// Log this because it happens when the remote host identifies
// as a FQDN but this is not resolvable to an IP by the OS.
// S40 doesn't have DNS settings, for instance, so if the APN
// is not able to resolve all the addresses of the SIP/IMS core,
// this problem will appear.
if (peerAddress == null && LogWriter.needsLogging)
LogWriter.logMessage(
LogWriter.TRACE_EXCEPTION, "WARNING! Socket.getAddress() returned 'null'!!!");
// Be warned, the host comparison may fail if socket.getAddress()
// returns a domain name as the Via Host will be a numeric IP.
// FIXME: No idea. Doing a DNS lookup or reverse DNS lookup
// can be misleading because they can be non-matching, that is,
// DNS(peerAddressName) != ReverseDNS(peerAddressIP)
if (v.hasParameter(ViaHeader.RPORT) || !v.getHost().equals(this.peerAddress)) {
if (LogWriter.needsLogging)
LogWriter.logMessage(
LogWriter.TRACE_MESSAGES,
"WARNING! \"Received\" parameter "
+ "has been temporarily disabled. Response will be sent to topmost Via Host: "
+ v.getHost());
this.peerAddress = v.getHost();
// if (LogWriter.needsLogging)
// LogWriter.logMessage(LogWriter.TRACE_MESSAGES, "Adding
// \"received\" parameter" +
// " to incoming request with value: " + peerAddress +
// " because it doesn't match the Via host " + v.getHost());
// v.setParameter(ViaHeader.RECEIVED, this.peerAddress);
}
if (v.hasParameter(ViaHeader.RPORT))
v.setParameter(ViaHeader.RPORT, Integer.toString(this.peerPort));
/*
* If socket is invalid, close it because it is useless and dangerous.
* Also if we ran out of slots for new sockets, as this could prevent
* incoming connections from being accepted.
*/
if (mySock.getAddress() == null
|| (stack.maxConnections != -1
&& tcpMessageProcessor.getNumConnections() >= stack.maxConnections)) {
stack.ioHandler.disposeSocket(mySock, myClientInputStream, myClientOutputStream);
mySock = null;
myClientInputStream = null;
myClientOutputStream = null;
if (stack.maxConnections != -1) {
synchronized (tcpMessageProcessor) {
tcpMessageProcessor.decreaseNumConnections();
tcpMessageProcessor.notify();
}
}
}
// reuse socket even for outgoing requests
else if (!this.isCached) {
((TCPMessageProcessor) this.messageProcessor).cacheMessageChannel(this);
String key = "TCP" + ":" + stack.ioHandler.makeKey(peerAddress, peerPort);
stack.ioHandler.putSocket(key, mySock, myClientOutputStream, myClientInputStream);
}
} catch (IOException e) {
e.printStackTrace();
}
}
// System.out.println("receiver address = " + receiverAddress);
// For each part of the request header, fetch it and process it
long receptionTime = System.currentTimeMillis();
if (sipMessage instanceof Request) {
// This is a request - process the request.
Request sipRequest = (Request) sipMessage;
// Create a new sever side request processor for this
// message and let it handle the rest.
if (LogWriter.needsLogging) {
LogWriter.logMessage("----Processing Message---");
}
// TODO: check maximum size of request
SIPServerRequestInterface sipServerRequest = stack.newSIPServerRequest(sipRequest, this);
if (sipServerRequest != null) {
try {
sipServerRequest.processRequest(sipRequest, this);
ServerLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
false,
receptionTime);
} catch (SIPServerException ex) {
ServerLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
ex.getMessage(),
false,
receptionTime);
handleException(ex);
}
} else {
if (LogWriter.needsLogging)
LogWriter.logMessage("Dropping request -- null sipServerRequest");
}
} else {
// This is a response message - process it.
Response sipResponse = (Response) sipMessage;
// TODO: check maximum size of the response
SIPServerResponseInterface sipServerResponse =
stack.newSIPServerResponse(sipResponse, this);
if (LogWriter.needsLogging)
LogWriter.logMessage("got a response interface " + sipServerResponse);
try {
// Responses with no ClienTransaction associated will not be processed
// as they may cause a NPE in the EventScanner thread.
if (sipServerResponse != null) sipServerResponse.processResponse(sipResponse, this);
else {
if (LogWriter.needsLogging) {
LogWriter.logMessage("null sipServerResponse!");
}
}
} catch (SIPServerException ex) {
// An error occured processing the message -- just log it.
ServerLog.logMessage(
sipMessage,
getPeerAddress().toString() + ":" + getPeerPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
ex.getMessage(),
false,
receptionTime);
// Ignore errors while processing responses??
}
}
} catch (Exception ee) {
if (stack.isAlive()) {
throw new RuntimeException(ee.getClass() + ":" + ee.getMessage());
}
// else ignore exceptions
} finally {
// this.tcpMessageProcessor.useCount --;
}
}
/**
* Actually process the parsed SIP message.
*
* @param sipMessage
*/
public void processMessage(Message sipMessage) {
if (sipMessage instanceof Request) {
Request sipRequest = (Request) sipMessage;
// This is a request - process it.
SIPServerRequestInterface sipServerRequest = stack.newSIPServerRequest(sipRequest, this);
// Drop it if there is no request returned
if (sipServerRequest == null) {
if (LogWriter.needsLogging) {
LogWriter.logMessage("Null request interface returned");
}
return;
}
try {
if (LogWriter.needsLogging)
LogWriter.logMessage(
"About to process " + sipRequest.getFirstLine() + "/" + sipServerRequest);
sipServerRequest.processRequest(sipRequest, this);
if (LogWriter.needsLogging)
LogWriter.logMessage(
"Done processing " + sipRequest.getFirstLine() + "/" + sipServerRequest);
// So far so good -- we will commit this message if
// all processing is OK.
if (ServerLog.needsLogging(ServerLog.TRACE_MESSAGES)) {
if (sipServerRequest.getProcessingInfo() == null) {
ServerLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
false,
new Long(receptionTime).toString());
} else {
ServerLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
sipServerRequest.getProcessingInfo(),
false,
new Long(receptionTime).toString());
}
}
} catch (SIPServerException ex) {
if (ServerLog.needsLogging(ServerLog.TRACE_MESSAGES)) {
ServerLog.logMessage(
sipMessage,
sipRequest.getViaHost() + ":" + sipRequest.getViaPort(),
stack.getHostAddress() + ":" + stack.getPort(this.getTransport()),
ex.getMessage(),
false,
new Long(receptionTime).toString());
}
handleException(ex);
}
} else {
// Handle a SIP Response message.
Response sipResponse = (Response) sipMessage;
SIPServerResponseInterface sipServerResponse = stack.newSIPServerResponse(sipResponse, this);
try {
if (sipServerResponse != null) {
sipServerResponse.processResponse(sipResponse, this);
// Normal processing of message.
} else {
if (LogWriter.needsLogging) {
LogWriter.logMessage("null sipServerResponse!");
}
}
} catch (SIPServerException ex) {
if (ServerLog.needsLogging(ServerLog.TRACE_MESSAGES)) {
this.logResponse(sipResponse, receptionTime, ex.getMessage() + "-- Dropped!");
}
ServerLog.logException(ex);
}
}
}