/**
* Update the permanent redirection list.
*
* @param the original request
* @param the new location
*/
private static void update_perm_redir_list(RoRequest req, URI new_loc) {
HTTPConnection con = req.getConnection();
URI cur_loc = null;
try {
cur_loc =
new URI(
new URI(con.getProtocol(), con.getHost(), con.getPort(), null), req.getRequestURI());
} catch (ParseException pe) {
if (LOG.isTraceEnabled()) {
LOG.trace("An exception occurred: " + pe.getMessage());
}
}
if (cur_loc != null && !cur_loc.equals(new_loc)) {
Hashtable perm_redir_list = Util.getList(perm_redir_cntxt_list, con.getContext());
perm_redir_list.put(cur_loc, new_loc);
}
}
/** Invoked by the HTTPClient. */
public int requestHandler(Request req, Response[] resp) {
HTTPConnection con = req.getConnection();
URI new_loc, cur_loc;
// check for retries
HttpOutputStream out = req.getStream();
if (out != null && deferred_redir_list.get(out) != null) {
copyFrom((RedirectionModule) deferred_redir_list.remove(out));
req.copyFrom(saved_req);
if (new_con) return REQ_NEWCON_RST;
else return REQ_RESTART;
}
// handle permanent redirections
try {
cur_loc =
new URI(
new URI(con.getProtocol(), con.getHost(), con.getPort(), null), req.getRequestURI());
} catch (ParseException pe) {
throw new Error("HTTPClient Internal Error: unexpected exception '" + pe + "'", pe);
}
// handle permanent redirections
Hashtable perm_redir_list =
Util.getList(perm_redir_cntxt_list, req.getConnection().getContext());
if ((new_loc = (URI) perm_redir_list.get(cur_loc)) != null) {
/*
* copy query if present in old url but not in new url. This isn't
* strictly conforming, but some scripts fail to properly propagate the
* query string to the Location header. Unfortunately it looks like we're
* f****d either way: some scripts fail if you don't propagate the query
* string, some fail if you do... God, don't you just love it when people
* can't read a spec? Anway, since we can't get it right for all scripts
* we opt to follow the spec. String nres = new_loc.getPathAndQuery(),
* oquery = Util.getQuery(req.getRequestURI()), nquery =
* Util.getQuery(nres); if (nquery == null && oquery != null) nres += "?"
* + oquery;
*/
String nres = new_loc.getPathAndQuery();
req.setRequestURI(nres);
try {
lastURI = new URI(new_loc, nres);
} catch (ParseException pe) {
if (LOG.isTraceEnabled()) {
LOG.trace("An exception occurred: " + pe.getMessage());
}
}
if (LOG.isDebugEnabled())
LOG.debug(
"Matched request in permanent redirection list - redoing request to "
+ lastURI.toExternalForm());
if (!con.isCompatibleWith(new_loc)) {
try {
con = new HTTPConnection(new_loc);
} catch (ProtocolNotSuppException e) {
throw new Error("HTTPClient Internal Error: unexpected " + "exception '" + e + "'", e);
}
con.setContext(req.getConnection().getContext());
req.setConnection(con);
return REQ_NEWCON_RST;
} else {
return REQ_RESTART;
}
}
return REQ_CONTINUE;
}
