Class HttpConversation

java.lang.Object

org.eclipse.jetty.util.Attributes.Lazy

org.eclipse.jetty.client.transport.HttpConversation

All Implemented Interfaces:

Attributes, Dumpable

public class HttpConversation
extends Attributes.Lazy

Nested Class Summary

Nested classes/interfaces inherited from interface Attributes

Attributes.Layer, Attributes.Lazy, Attributes.Mapped, Attributes.Synthetic, Attributes.Wrapper

Nested classes/interfaces inherited from interface Dumpable

Dumpable.DumpableContainer, Dumpable.DumpAppendable

Field Summary

Fields inherited from interface Attributes

NULL

Fields inherited from interface Dumpable

LEGEND

Constructor Summary

Constructors

Constructor	Description
HttpConversation()

Method Summary

Modifier and Type	Method	Description
void	abort(Throwable cause, Promise<Boolean> promise)
boolean	contains(Request request)	Whether the given request is in this conversation.
Deque<HttpExchange>	getExchanges()
ResponseListeners	getResponseListeners()	Returns the list of response listeners that needs to be notified of response events.
long	getTimeout()	Returns the total timeout for the conversation.
String	toString()
void	updateResponseListeners(Response.Listener overrideListener)	Requests to update the response listener, eventually using the given override response listener, that must be notified instead of the first exchange response listeners.

Methods inherited from class Attributes.Lazy

addAll, asAttributeMap, clearAttributes, dump, dump, equals, getAttribute, getAttributeNameSet, hashCode, removeAttribute, setAttribute, size

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Dumpable

dumpSelf

Constructor Details

HttpConversation

public HttpConversation()

Method Details

getExchanges

public Deque<HttpExchange> getExchanges()

getResponseListeners

public ResponseListeners getResponseListeners()

Returns the list of response listeners that needs to be notified of response events. This list changes as the conversation proceeds, as follows:

1. request R1 send => conversation.updateResponseListeners(null)
   • exchanges in conversation: E1
   • listeners to be notified: E1.listeners
2. response R1 arrived, 401 => conversation.updateResponseListeners(AuthenticationProtocolHandler.listener)
   • exchanges in conversation: E1
   • listeners to be notified: AuthenticationProtocolHandler.listener
3. request R2 send => conversation.updateResponseListeners(null)
   • exchanges in conversation: E1 + E2
   • listeners to be notified: E2.listeners + E1.listeners
4. response R2 arrived, 302 => conversation.updateResponseListeners(RedirectProtocolHandler.listener)
   • exchanges in conversation: E1 + E2
   • listeners to be notified: E2.listeners + RedirectProtocolHandler.listener
5. request R3 send => conversation.updateResponseListeners(null)
   • exchanges in conversation: E1 + E2 + E3
   • listeners to be notified: E3.listeners + E1.listeners
6. response R3 arrived, 200 => conversation.updateResponseListeners(null)
   • exchanges in conversation: E1 + E2 + E3
   • listeners to be notified: E3.listeners + E1.listeners

Basically the override conversation listener replaces the first exchange response listener, and we also notify the last exchange response listeners (if it's not also the first). This scheme allows for protocol handlers to not worry about other protocol handlers, or to worry too much about notifying the first exchange response listeners, but still allowing a protocol handler to perform completion activities while another protocol handler performs new ones (as an example, the AuthenticationProtocolHandler stores the successful authentication credentials while the RedirectProtocolHandler performs a redirect).

Returns:

the list of response listeners that needs to be notified of response events

updateResponseListeners

public void updateResponseListeners(Response.Listener overrideListener)

Requests to update the response listener, eventually using the given override response listener, that must be notified instead of the first exchange response listeners. This works in conjunction with getResponseListeners(), returning the appropriate response listeners that needs to be notified of response events.

Parameters:

overrideListener - the override response listener

contains

public boolean contains(Request request)

Whether the given request is in this conversation.

Parameters:

request - the request to test

Returns:

whether the given request is in this conversation

getTimeout

public long getTimeout()

Returns the total timeout for the conversation.

The conversation total timeout is the total timeout of the first request in the conversation.

Returns:

the total timeout of the conversation

See Also:

• Request.getTimeout()

abort

public void abort(Throwable cause,
 Promise<Boolean> promise)

toString

public String toString()

Overrides:

toString in class Attributes.Lazy