Package org.apache.coyote

Interface UpgradeProtocol

All Known Implementing Classes:

Http2Protocol

public interface UpgradeProtocol

Method Summary

Modifier and Type	Method	Description
boolean	accept(Request request)	Allows the implementation to examine the request and accept or reject it based on what it finds.
byte[]	getAlpnIdentifier()
String	getAlpnName()
String	getHttpUpgradeName(boolean isSSLEnabled)
InternalHttpUpgradeHandler	getInternalUpgradeHandler(SocketWrapperBase<?> socketWrapper, Adapter adapter, Request request)
Processor	getProcessor(SocketWrapperBase<?> socketWrapper, Adapter adapter)
default void	setHttp11Protocol(AbstractHttp11Protocol<?> protocol)	Configure the HTTP/1.1 protocol that this UpgradeProcotol is nested under.

Method Details

getHttpUpgradeName

String getHttpUpgradeName(boolean isSSLEnabled)

Parameters:

isSSLEnabled - Is this for a connector that is configured to support TLS. Some protocols (e.g. HTTP/2) only support HTTP upgrade over non-secure connections.

Returns:

The name that clients will use to request an upgrade to this protocol via an HTTP/1.1 upgrade request or null if upgrade via an HTTP/1.1 upgrade request is not supported.

getAlpnIdentifier

byte[] getAlpnIdentifier()

Returns:

The byte sequence as listed in the IANA registry for this protocol or null if upgrade via ALPN is not supported.

getAlpnName

String getAlpnName()

Returns:

The name of the protocol as listed in the IANA registry if and only if getAlpnIdentifier() returns the UTF-8 encoding of this name. If getAlpnIdentifier() returns some other byte sequence, then this method returns the empty string. If upgrade via ALPN is not supported then null is returned.

getProcessor

Processor getProcessor(SocketWrapperBase<?> socketWrapper,
 Adapter adapter)

Parameters:

socketWrapper - The socketWrapper for the connection that requires a processor

adapter - The Adapter instance that provides access to the standard Engine/Host/Context/Wrapper processing chain

Returns:

A processor instance for processing a connection using this protocol.

getInternalUpgradeHandler

InternalHttpUpgradeHandler getInternalUpgradeHandler(SocketWrapperBase<?> socketWrapper,
 Adapter adapter,
 Request request)

Parameters:

socketWrapper - The socket

adapter - The Adapter to use to configure the new upgrade handler

request - A copy (may be incomplete) of the request that triggered the upgrade

Returns:

An instance of the HTTP upgrade handler for this protocol

accept

boolean accept(Request request)

Allows the implementation to examine the request and accept or reject it based on what it finds.

Parameters:

request - The request that included an upgrade header for this protocol

Returns:

true if the request is accepted, otherwise false

setHttp11Protocol

default void setHttp11Protocol(AbstractHttp11Protocol<?> protocol)

Configure the HTTP/1.1 protocol that this UpgradeProcotol is nested under. Connections passed to this UpgradeProtocol via HTTP upgrade will have been initially handled by this HTTP/1.1 protocol implementation.

The default implementation is a NO-OP.

Parameters:

protocol - The HTTP/1.1 protocol implementation that will initially handle any connections passed to this UpgradeProtocol via the HTTP upgrade mechanism