@Override
public synchronized void forwardTo(final Call call, final Map<String, String> headers)
throws SignalException {
if (!(call instanceof SIPCall)) {
throw new UnsupportedOperationException("Cannot forward to non-SIPCall.");
}
if (_req.isInitial()) {
throw new IllegalArgumentException("Cannot forward initial SIP request.");
}
final SIPCallImpl scall = (SIPCallImpl) call;
if (!scall.isAnswered()) {
throw new IllegalStateException("Cannot forward to no-answered call.");
}
this.checkState();
_forwarded = true;
final SipSession session = scall.getSipSession();
final SipServletRequest req = session.createRequest(_req.getMethod());
SIPHelper.addHeaders(req, headers);
SIPHelper.copyContent(_req, req);
SIPHelper.linkSIPMessage(_req, req);
try {
req.send();
} catch (final IOException e) {
throw new SignalException(e);
}
}
/** Invoked for SIP INVITE requests. */
@Override
protected void doInvite(final SipServletRequest req) throws ServletException, IOException {
if (req.isInitial()) {
// Get a reference to the Proxy helper.
final Proxy proxy = req.getProxy();
// Set Proxy parameters to control various aspects of the proxying
// operation:
proxy.setRecordRoute(true);
proxy.setSupervised(true);
// Set the flag indicates the working mode. True for Follow-Me; false for
// Find-me.
proxy.setParallel(m_parallel);
// Proxies a SIP request to the specified set of destinations.
proxy.proxyTo(m_targets);
}
}
/**
* @param request
* @param client
* @param toClient
* @throws IOException
*/
public static boolean redirectToB2BUA(
final SipServletRequest request,
final Client client,
Client toClient,
DaoManager storage,
SipFactory sipFactory)
throws IOException {
request.getSession().setAttribute("lastRequest", request);
if (logger.isInfoEnabled()) {
logger.info("B2BUA (p2p proxy): Got request:\n" + request.getMethod());
logger.info(
String.format(
"B2BUA: Proxying a session between %s and %s", client.getUri(), toClient.getUri()));
}
if (daoManager == null) {
daoManager = storage;
}
String user = ((SipURI) request.getTo().getURI()).getUser();
final RegistrationsDao registrations = daoManager.getRegistrationsDao();
final Registration registration = registrations.getRegistration(user);
if (registration != null) {
final String location = registration.getLocation();
SipURI to;
SipURI from;
try {
to = (SipURI) sipFactory.createURI(location);
from =
(SipURI)
sipFactory.createURI(
(registrations.getRegistration(client.getLogin())).getLocation());
final SipSession incomingSession = request.getSession();
// create and send the outgoing invite and do the session linking
incomingSession.setAttribute(B2BUA_LAST_REQUEST, request);
SipServletRequest outRequest =
sipFactory.createRequest(
request.getApplicationSession(),
request.getMethod(),
request.getFrom().getURI(),
request.getTo().getURI());
outRequest.setRequestURI(to);
if (request.getContent() != null) {
final byte[] sdp = request.getRawContent();
String offer = null;
if (request.getContentType().equalsIgnoreCase("application/sdp")) {
// Issue 308: https://telestax.atlassian.net/browse/RESTCOMM-308
String externalIp = request.getInitialRemoteAddr();
// Issue 306: https://telestax.atlassian.net/browse/RESTCOMM-306
final String initialIpBeforeLB = request.getHeader("X-Sip-Balancer-InitialRemoteAddr");
try {
if (initialIpBeforeLB != null && !initialIpBeforeLB.isEmpty()) {
offer = patch(sdp, initialIpBeforeLB);
} else {
offer = patch(sdp, externalIp);
}
} catch (SdpException e) {
logger.error("Unexpected exception while patching sdp ", e);
}
}
if (offer != null) {
outRequest.setContent(offer, request.getContentType());
} else {
outRequest.setContent(sdp, request.getContentType());
}
}
final SipSession outgoingSession = outRequest.getSession();
if (request.isInitial()) {
incomingSession.setAttribute(B2BUA_LINKED_SESSION, outgoingSession);
outgoingSession.setAttribute(B2BUA_LINKED_SESSION, incomingSession);
}
outgoingSession.setAttribute(B2BUA_LAST_REQUEST, outRequest);
request.createResponse(100).send();
// Issue #307: https://telestax.atlassian.net/browse/RESTCOMM-307
request.getSession().setAttribute("toInetUri", to);
outRequest.send();
outRequest.getSession().setAttribute("fromInetUri", from);
final CallDetailRecord.Builder builder = CallDetailRecord.builder();
builder.setSid(Sid.generate(Sid.Type.CALL));
builder.setDateCreated(DateTime.now());
builder.setAccountSid(client.getAccountSid());
builder.setTo(toClient.getFriendlyName());
builder.setCallerName(client.getFriendlyName());
builder.setFrom(client.getFriendlyName());
// builder.setForwardedFrom(callInfo.forwardedFrom());
// builder.setPhoneNumberSid(phoneId);
builder.setStatus(CallStateChanged.State.QUEUED.name());
builder.setDirection("Client-To-Client");
builder.setApiVersion(client.getApiVersion());
builder.setPrice(new BigDecimal("0.00"));
// TODO implement currency property to be read from Configuration
builder.setPriceUnit(Currency.getInstance("USD"));
final StringBuilder buffer = new StringBuilder();
buffer.append("/").append(client.getApiVersion()).append("/Accounts/");
buffer.append(client.getAccountSid().toString()).append("/Calls/");
buffer.append(client.getSid().toString());
final URI uri = URI.create(buffer.toString());
builder.setUri(uri);
CallDetailRecordsDao records = daoManager.getCallDetailRecordsDao();
CallDetailRecord callRecord = builder.build();
records.addCallDetailRecord(callRecord);
incomingSession.setAttribute(CDR_SID, callRecord.getSid());
outgoingSession.setAttribute(CDR_SID, callRecord.getSid());
return true; // successfully proxied the SIP request between two registered clients
} catch (ServletParseException badUriEx) {
if (logger.isInfoEnabled()) {
logger.info(
String.format("B2BUA: Error parsing Client Contact URI: %s", location), badUriEx);
}
}
}
return false;
}
