/**
* Process the redirect response.
*
* @return <code>true</code> if the redirect was successful
*/
private boolean processRedirectResponse(final HttpMethod method) throws RedirectException {
// get the location header to find out where to redirect to
Header locationHeader = method.getResponseHeader("location");
if (locationHeader == null) {
// got a redirect response, but no location header
LOG.error("Received redirect response " + method.getStatusCode() + " but no location header");
return false;
}
String location = locationHeader.getValue();
if (LOG.isDebugEnabled()) {
LOG.debug("Redirect requested to location '" + location + "'");
}
// rfc2616 demands the location value be a complete URI
// Location = "Location" ":" absoluteURI
URI redirectUri = null;
URI currentUri = null;
try {
currentUri =
new URI(
this.conn.getProtocol().getScheme(),
null,
this.conn.getHost(),
this.conn.getPort(),
method.getPath());
String charset = method.getParams().getUriCharset();
redirectUri = new URI(location, true, charset);
if (redirectUri.isRelativeURI()) {
if (this.params.isParameterTrue(HttpClientParams.REJECT_RELATIVE_REDIRECT)) {
LOG.warn("Relative redirect location '" + location + "' not allowed");
return false;
} else {
// location is incomplete, use current values for defaults
LOG.debug("Redirect URI is not absolute - parsing as relative");
redirectUri = new URI(currentUri, redirectUri);
}
} else {
// Reset the default params
method.getParams().setDefaults(this.params);
}
method.setURI(redirectUri);
hostConfiguration.setHost(redirectUri);
} catch (URIException ex) {
throw new InvalidRedirectLocationException(
"Invalid redirect location: " + location, location, ex);
}
if (this.params.isParameterFalse(HttpClientParams.ALLOW_CIRCULAR_REDIRECTS)) {
if (this.redirectLocations == null) {
this.redirectLocations = new HashSet();
}
this.redirectLocations.add(currentUri);
try {
if (redirectUri.hasQuery()) {
redirectUri.setQuery(null);
}
} catch (URIException e) {
// Should never happen
return false;
}
if (this.redirectLocations.contains(redirectUri)) {
throw new CircularRedirectException("Circular redirect to '" + redirectUri + "'");
}
}
if (LOG.isDebugEnabled()) {
LOG.debug(
"Redirecting from '"
+ currentUri.getEscapedURI()
+ "' to '"
+ redirectUri.getEscapedURI());
}
// And finally invalidate the actual authentication scheme
method.getHostAuthState().invalidate();
return true;
}
