Package org.glassfish.grizzly.http

Class HttpClientFilter

java.lang.Object

org.glassfish.grizzly.filterchain.BaseFilter

org.glassfish.grizzly.http.HttpBaseFilter

org.glassfish.grizzly.http.HttpCodecFilter

org.glassfish.grizzly.http.HttpClientFilter

All Implemented Interfaces:

Filter, MonitoringAware<HttpProbe>

public class HttpClientFilter
extends HttpCodecFilter

Client side HttpCodecFilter implementation, which is responsible for decoding HttpResponsePacket and encoding HttpRequestPacket messages. This Filter is usually used, when we build an asynchronous HTTP client connection.

Author:

Alexey Stashok

See Also:

• HttpCodecFilter
• HttpServerFilter

Nested Class Summary

Nested classes/interfaces inherited from class org.glassfish.grizzly.http.HttpCodecFilter

HttpCodecFilter.ContentParsingState, HttpCodecFilter.HeaderParsingState

Field Summary

Fields inherited from class org.glassfish.grizzly.http.HttpCodecFilter

chunkingEnabled, CLOSE_BYTES, contentEncodings, DEFAULT_MAX_HTTP_PACKET_HEADER_SIZE, KEEPALIVE_BYTES, maxHeadersSize, maxPayloadRemainderToSkip, monitoringConfig, preserveHeaderCase

Constructor Summary

Constructors

Constructor	Description
HttpClientFilter()	Constructor, which creates HttpClientFilter instance
HttpClientFilter(int maxHeadersSize)	Constructor, which creates HttpClientFilter instance, with the specific secure and max header size parameter.

Method Summary

Modifier and Type	Method	Description
protected final void	clearResponse(Connection connection)
protected Buffer	encodeHttpPacket(FilterChainContext ctx, HttpPacket input)
NextAction	handleEvent(FilterChainContext ctx, FilterChainEvent event)	Handle custom event associated with the Connection.
NextAction	handleRead(FilterChainContext ctx)	The method is called, once we have received a Buffer, which has to be transformed into HTTP response packet part.
NextAction	handleWrite(FilterChainContext ctx)	The method is called, once we need to serialize a HttpPacket, which may represent HTTP packet header, content or content chunk.
protected void	onHttpContentEncoded(HttpContent content, FilterChainContext ctx)	Invoked when a HTTP body chunk has been encoded in preparation to being transmitted to the user-agent.
protected void	onHttpContentError(HttpHeader httpHeader, FilterChainContext ctx, Throwable t)	Callback which is invoked when parsing an HTTP message payload fails.
protected void	onHttpContentParsed(HttpContent content, FilterChainContext ctx)	Invoked as request/response body content has been processed by this Filter.
protected void	onHttpHeaderError(HttpHeader httpHeader, FilterChainContext ctx, Throwable t)	Callback which is invoked when parsing an HTTP message header fails.
protected boolean	onHttpHeaderParsed(HttpHeader httpHeader, Buffer buffer, FilterChainContext ctx)	Callback invoked when the HTTP message header parsing is complete.
protected void	onHttpHeadersEncoded(HttpHeader httpHeader, FilterChainContext ctx)	Invoked when HTTP headers have been encoded in preparation to being transmitted to the user-agent.
protected void	onHttpHeadersParsed(HttpHeader httpHeader, MimeHeaders headers, FilterChainContext ctx)	Invoked when HTTP headers portion comes for HttpHeader message.
protected boolean	onHttpPacketParsed(HttpHeader httpHeader, FilterChainContext ctx)	Callback method, called when HttpPacket parsing has been completed.
protected void	onInitialLineEncoded(HttpHeader header, FilterChainContext ctx)	Invoked when the initial response line has been encoded in preparation to being transmitted to the user-agent.
protected void	onInitialLineParsed(HttpHeader httpHeader, FilterChainContext ctx)	Invoked when either the request line or status line has been parsed.

Methods inherited from class org.glassfish.grizzly.http.HttpCodecFilter

addContentEncoding, addTransferEncoding, createJmxManagementObject, decodeHttpPacket, decodeHttpPacketFromBuffer, decodeHttpPacketFromBytes, encodeHttpPacket, encodeKnownHeaders, encodeMimeHeader, encodeMimeHeaders, getContentEncodings, getMaxPayloadRemainderToSkip, getMonitoringConfig, getTransferEncodings, handleRead, isChunkingEnabled, isPreserveHeaderCase, isRemoveHandledContentEncodingHeaders, isSecure, onIncomingUpgrade, onOutgoingUpgrade, parseHeaderFromBuffer, parseHeaderFromBytes, parseHeaderName, parseHeaderName, parseHeadersFromBuffer, parseHeadersFromBytes, parseHeaderValue, parseHeaderValue, removeContentEncoding, removeTransferEncoding, setMaxPayloadRemainderToSkip, setPreserveHeaderCase, setRemoveHandledContentEncodingHeaders, statusDropsConnection

Methods inherited from class org.glassfish.grizzly.http.HttpBaseFilter

bind

Methods inherited from class org.glassfish.grizzly.filterchain.BaseFilter

createContext, exceptionOccurred, handleAccept, handleClose, handleConnect, onAdded, onFilterChainChanged, onRemoved, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

HttpClientFilter

public HttpClientFilter()

Constructor, which creates HttpClientFilter instance

HttpClientFilter

public HttpClientFilter(int maxHeadersSize)

Constructor, which creates HttpClientFilter instance, with the specific secure and max header size parameter.

Parameters:

maxHeadersSize - the maximum size of the HTTP message header.

Method Details

handleWrite

public NextAction handleWrite(FilterChainContext ctx)
                       throws IOException

Description copied from class: HttpCodecFilter

The method is called, once we need to serialize a HttpPacket, which may represent HTTP packet header, content or content chunk. Filter gets HttpPacket, which represents a HTTP header, content, or content part. As the result of "write" transformation - we will get Buffer, which will represent serialized HTTP packet.

Specified by:

handleWrite in interface Filter

Overrides:

handleWrite in class HttpCodecFilter

Parameters:

ctx - Request processing context

Returns:

NextAction

Throws:

IOException

handleRead

public NextAction handleRead(FilterChainContext ctx)
                      throws IOException

The method is called, once we have received a Buffer, which has to be transformed into HTTP response packet part. Filter gets Buffer, which represents a part or complete HTTP response message. As the result of "read" transformation - we will get HttpContent message, which will represent HTTP response packet content (might be zero length content) and reference to a HttpHeader, which contains HTTP response message header.

Specified by:

handleRead in interface Filter

Overrides:

handleRead in class BaseFilter

Parameters:

ctx - Request processing context

Returns:

NextAction

Throws:

IOException

handleEvent

public NextAction handleEvent(FilterChainContext ctx,
 FilterChainEvent event)
                       throws IOException

Description copied from class: BaseFilter

Handle custom event associated with the Connection. This Filter may either complete the required processing and return StopAction, or delegate remaining processing to the next Filter in a FilterChain containing this Filter by returning InvokeAction.

Specified by:

handleEvent in interface Filter

Overrides:

handleEvent in class BaseFilter

Parameters:

ctx - FilterChainContext

Returns:

NextAction instruction for FilterChain, how it should continue the execution

Throws:

IOException

onHttpPacketParsed

protected boolean onHttpPacketParsed(HttpHeader httpHeader,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Callback method, called when HttpPacket parsing has been completed.

Specified by:

onHttpPacketParsed in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents parsed HTTP packet header

ctx - processing context.

Returns:

true if an error has occurred while processing the header portion of the HTTP request, otherwise returns false.s

onHttpHeaderParsed

protected boolean onHttpHeaderParsed(HttpHeader httpHeader,
 Buffer buffer,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Callback invoked when the HTTP message header parsing is complete.

Specified by:

onHttpHeaderParsed in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents parsed HTTP packet header

buffer - Buffer the header was parsed from

ctx - processing context.

Returns:

true if an error has occurred while processing the header portion of the HTTP request, otherwise returns false.

onHttpHeaderError

protected void onHttpHeaderError(HttpHeader httpHeader,
 FilterChainContext ctx,
 Throwable t)
                          throws IOException

Description copied from class: HttpCodecFilter

Callback which is invoked when parsing an HTTP message header fails. The processing logic has to take care about error handling and following connection closing.

Specified by:

onHttpHeaderError in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents HTTP packet header

ctx - the FilterChainContext processing this request

t - the cause of the error

Throws:

IOException

onHttpContentError

protected void onHttpContentError(HttpHeader httpHeader,
 FilterChainContext ctx,
 Throwable t)
                           throws IOException

Description copied from class: HttpCodecFilter

Callback which is invoked when parsing an HTTP message payload fails. The processing logic has to take care about error handling and following connection closing.

Specified by:

onHttpContentError in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents HTTP packet header

ctx - the FilterChainContext processing this request

t - the cause of the error

Throws:

IOException

onInitialLineParsed

protected void onInitialLineParsed(HttpHeader httpHeader,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Invoked when either the request line or status line has been parsed.

Specified by:

onInitialLineParsed in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents HTTP packet header

ctx - processing context.

onInitialLineEncoded

protected void onInitialLineEncoded(HttpHeader header,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Invoked when the initial response line has been encoded in preparation to being transmitted to the user-agent.

Specified by:

onInitialLineEncoded in class HttpCodecFilter

Parameters:

header - HttpHeader, which represents HTTP packet header

ctx - processing context.

onHttpHeadersParsed

protected void onHttpHeadersParsed(HttpHeader httpHeader,
 MimeHeaders headers,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Invoked when HTTP headers portion comes for HttpHeader message. Depending on the transfer encoding being used by the current request, this method may be invoked multiple times.

Specified by:

onHttpHeadersParsed in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents HTTP packet header

headers - the headers portion, that has been parsed

ctx - processing context.

onHttpHeadersEncoded

protected void onHttpHeadersEncoded(HttpHeader httpHeader,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Invoked when HTTP headers have been encoded in preparation to being transmitted to the user-agent.

Specified by:

onHttpHeadersEncoded in class HttpCodecFilter

Parameters:

httpHeader - HttpHeader, which represents HTTP packet header

ctx - processing context.

onHttpContentParsed

protected void onHttpContentParsed(HttpContent content,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Invoked as request/response body content has been processed by this Filter.

Specified by:

onHttpContentParsed in class HttpCodecFilter

Parameters:

content - request/response body content

ctx - processing context.

onHttpContentEncoded

protected void onHttpContentEncoded(HttpContent content,
 FilterChainContext ctx)

Description copied from class: HttpCodecFilter

Invoked when a HTTP body chunk has been encoded in preparation to being transmitted to the user-agent.

Specified by:

onHttpContentEncoded in class HttpCodecFilter

Parameters:

content - HttpContent, which represents HTTP packet header

ctx - processing context.

clearResponse

protected final void clearResponse(Connection connection)

encodeHttpPacket

protected Buffer encodeHttpPacket(FilterChainContext ctx,
 HttpPacket input)

Overrides:

encodeHttpPacket in class HttpCodecFilter