}
//get the location header to find out where to redirect to
Header locationHeader = response.getFirstHeader("location");
if (locationHeader == null) {
// got a redirect response, but no location header
throw new ProtocolException(
"Received redirect response " + response.getStatusLine()
+ " but no location header");
}
String location = locationHeader.getValue();
if (this.log.isDebugEnabled()) {
this.log.debug("Redirect requested to location '" + location + "'");
}
URI uri = createLocationURI(location);
HttpParams params = request.getParams();
// rfc2616 demands the location value be a complete URI
// Location = "Location" ":" absoluteURI
try {
// Drop fragment
uri = URIUtils.rewriteURI(uri);
if (!uri.isAbsolute()) {
if (params.isParameterTrue(ClientPNames.REJECT_RELATIVE_REDIRECT)) {
throw new ProtocolException("Relative redirect location '"
+ uri + "' not allowed");
}
// Adjust location URI
HttpHost target = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
if (target == null) {
throw new IllegalStateException("Target host not available " +
"in the HTTP context");
}
URI requestURI = new URI(request.getRequestLine().getUri());
URI absoluteRequestURI = URIUtils.rewriteURI(requestURI, target, true);
uri = URIUtils.resolve(absoluteRequestURI, uri);
}
} catch (URISyntaxException ex) {
throw new ProtocolException(ex.getMessage(), ex);
}
RedirectLocations redirectLocations = (RedirectLocations) context.getAttribute(
REDIRECT_LOCATIONS);
if (redirectLocations == null) {