public static void addDateHeaderIfRequired(HttpServerExchange exchange) {
HeaderMap responseHeaders = exchange.getResponseHeaders();
if (exchange.getConnection().getUndertowOptions().get(UndertowOptions.ALWAYS_SET_DATE, true)
&& !responseHeaders.contains(Headers.DATE)) {
long time = System.nanoTime();
if (time < nextUpdateTime) {
responseHeaders.put(Headers.DATE, cachedDateString);
} else {
long realTime = System.currentTimeMillis();
String dateString = DateUtils.toDateString(new Date(realTime));
cachedDateString = dateString;
nextUpdateTime = time + 1000000000;
responseHeaders.put(Headers.DATE, dateString);
}
}
}
/**
* Get the set of names for all text headers
*
* @param caseInsensitive {@code true} if names should be added in a case insensitive
* @return The set of names for all text headers
*/
public Set<AsciiString> names(boolean caseInsensitive) {
final Set<AsciiString> names =
caseInsensitive
? new TreeSet<AsciiString>(AsciiString.CASE_INSENSITIVE_ORDER)
: new LinkedHashSet<AsciiString>(size());
headers.forEachName(
new HeaderMap.NameVisitor() {
@Override
public boolean visit(CharSequence name) {
names.add((AsciiString) name);
return true;
}
});
return names;
}
@Override
public BinaryHeaders forEachEntry(final BinaryHeaders.BinaryHeaderVisitor visitor) {
headers.forEachEntry(
new HeaderMap.EntryVisitor() {
@Override
public boolean visit(Entry<CharSequence, CharSequence> entry) {
try {
return visitor.visit((AsciiString) entry.getKey(), (AsciiString) entry.getValue());
} catch (Exception e) {
PlatformDependent.throwException(e);
return false;
}
}
});
return this;
}
@Override
public List<Map.Entry<AsciiString, AsciiString>> entries() {
int size = size();
@SuppressWarnings("unchecked")
final Map.Entry<AsciiString, AsciiString>[] all = new Map.Entry[size];
headers.forEachEntry(
new HeaderMap.EntryVisitor() {
int cnt;
@Override
public boolean visit(Entry<CharSequence, CharSequence> entry) {
all[cnt++] = new AsciiStringHeaderEntry(entry);
return true;
}
});
return Arrays.asList(all);
}
@Override
public boolean remove(AsciiString name) {
return headers.remove(name);
}
@Override
public BinaryHeaders add(AsciiString name, AsciiString... values) {
headers.add(name, values);
return this;
}
@Override
public BinaryHeaders add(AsciiString name, Iterable<AsciiString> values) {
headers.add(name, values);
return this;
}
@Override
public Set<AsciiString> names() {
return names(headers.isIgnoreCase());
}
public boolean contains(AsciiString name, AsciiString value, boolean ignoreCase) {
return headers.contains(name, value);
}
@Override
public boolean isEmpty() {
return headers.isEmpty();
}
@Override
public int size() {
return headers.size();
}
@Override
public List<AsciiString> getAllAndRemove(AsciiString name) {
return headers.getAllAndRemove(name, VALUE_UNMARSHALLER);
}
@Override
public AsciiString getAndRemove(AsciiString name) {
return (AsciiString) headers.getAndRemove(name);
}
@Override
public AsciiString get(AsciiString name) {
return (AsciiString) headers.get(name);
}
@Override
public BinaryHeaders clear() {
headers.clear();
return this;
}
@Override
public BinaryHeaders set(AsciiString name, AsciiString value) {
headers.set(name, value);
return this;
}
