io.undertow.attribute

Interface ExchangeAttribute

All Known Implementing Classes:

AuthenticationTypeExchangeAttribute, BytesSentAttribute, CompositeExchangeAttribute, ConstantExchangeAttribute, CookieAttribute, DateTimeAttribute, HostAndPortAttribute, IdentUsernameAttribute, LocalIPAttribute, LocalPortAttribute, LocalServerNameAttribute, NullAttribute, PathParameterAttribute, PredicateContextAttribute, QueryParameterAttribute, QueryStringAttribute, QuotingExchangeAttribute, RelativePathAttribute, RemoteHostAttribute, RemoteIPAttribute, RemoteUserAttribute, RequestHeaderAttribute, RequestLineAttribute, RequestMethodAttribute, RequestPathAttribute, RequestProtocolAttribute, RequestSchemeAttribute, RequestURLAttribute, ResolvedPathAttribute, ResponseCodeAttribute, ResponseHeaderAttribute, ResponseReasonPhraseAttribute, ResponseTimeAttribute, SecureExchangeAttribute, ServletContextAttribute, ServletNameAttribute, ServletRelativePathAttribute, ServletRequestAttribute, ServletRequestCharacterEncodingAttribute, ServletRequestedSessionIdAttribute, ServletRequestedSessionIdFromCookieAttribute, ServletRequestedSessionIdValidAttribute, ServletRequestLineAttribute, ServletRequestLocaleAttribute, ServletRequestParameterAttribute, ServletRequestURLAttribute, ServletSessionAttribute, ServletSessionIdAttribute, SslCipherAttribute, SslClientCertAttribute, SslSessionIdAttribute, StoredResponse, SubstituteEmptyWrapper.SubstituteEmptyAttribute, ThreadNameAttribute, TransportProtocolAttribute

public interface ExchangeAttribute

Representation of a string attribute from a HTTP server exchange.

Author:

Stuart Douglas

Method Summary

Modifier and Type	Method and Description
String	readAttribute(HttpServerExchange exchange) Resolve the attribute from the HTTP server exchange.
void	writeAttribute(HttpServerExchange exchange, String newValue) Sets a new value for the attribute.

Method Detail

readAttribute

String readAttribute(HttpServerExchange exchange)

Resolve the attribute from the HTTP server exchange. This may return null if the attribute is not present.

Parameters:

exchange - The exchange

Returns:

The attribute

writeAttribute

void writeAttribute(HttpServerExchange exchange,
                    String newValue)
             throws ReadOnlyAttributeException

Sets a new value for the attribute. Not all attributes are writable.

Parameters:

exchange - The exchange

newValue - The new value for the attribute

Throws:

ReadOnlyAttributeException - when attribute cannot be written