session = null;
if (session != null)
return (session);
// Return the requested session if it exists and is valid
Manager manager = context.getManager();
if (manager == null)
return (null); // Sessions are not supported
if (requestedSessionId != null) {
try {
session = manager.findSession(requestedSessionId);
} catch (IOException e) {
session = null;
}
if ((session != null) && !session.isValid())
session = null;
if (session != null) {
session.access();
return (session);
}
}
// Create a new session if requested and the response is not committed
if (!create)
return (null);
if ((response != null) &&
context.getCookies() &&
response.getResponse().isCommitted()) {
throw new IllegalStateException
(sm.getString("coyoteRequest.sessionCreateCommitted"));
}
// Verify that the submitted session id exists in one of the host's web applications
String sessionId = requestedSessionId;
if (sessionId != null) {
if (SESSION_ID_CHECK) {
boolean found = false;
try {
if (!found) {
Container children[] = getHost().findChildren();
for (int i = 0; (i < children.length) && !found; i++) {
if ((children[i].getManager() != null)
&& (children[i].getManager().findSession(sessionId) != null)) {
found = true;
}
}
}
} catch (IOException e) {
// Ignore: one manager is broken, and it will show up elsewhere again
}
if (!found) {
sessionId = null;
}
} else if (!isRequestedSessionIdFromCookie()) {
sessionId = null;
}
}
session = manager.createSession(sessionId);
// Creating a new session cookie based on that session
// If there was no cookie with the current session id, add a cookie to the response
if ( (session != null) && context.getCookies()
&& !(isRequestedSessionIdFromCookie() && (session.getIdInternal().equals(getRequestedSessionId()))) ) {