org.littleshoot.proxy

Class HttpFiltersAdapter

java.lang.Object

org.littleshoot.proxy.HttpFiltersAdapter

All Implemented Interfaces:

HttpFilters

public class HttpFiltersAdapter
extends Object
implements HttpFilters

Convenience base class for implementations of HttpFilters.

Field Summary

Fields

Modifier and Type	Field and Description
protected ChannelHandlerContext	ctx
static HttpFiltersAdapter	NOOP_FILTER A default, stateless, no-op HttpFilters instance.
protected HttpRequest	originalRequest

Constructor Summary

Constructors

Constructor and Description
HttpFiltersAdapter(HttpRequest originalRequest)
HttpFiltersAdapter(HttpRequest originalRequest, ChannelHandlerContext ctx)

Method Summary

Modifier and Type	Method and Description
HttpResponse	clientToProxyRequest(HttpObject httpObject) Filters requests on their way from the client to the proxy.
HttpObject	proxyToClientResponse(HttpObject httpObject) Filters responses on their way from the proxy to the client.
void	proxyToServerConnectionFailed() Informs filter that proxy to server connection has failed.
void	proxyToServerConnectionQueued() Informs filter that proxy to server connection is in queue.
void	proxyToServerConnectionSSLHandshakeStarted() Informs filter that proxy to server ssl handshake is initiating.
void	proxyToServerConnectionStarted() Informs filter that proxy to server connection is initiating.
void	proxyToServerConnectionSucceeded(ChannelHandlerContext serverCtx) Informs filter that proxy to server connection has succeeded.
HttpResponse	proxyToServerRequest(HttpObject httpObject) Filters requests on their way from the proxy to the server.
void	proxyToServerRequestSending() Informs filter that proxy to server request is being sent.
void	proxyToServerRequestSent() Informs filter that the HTTP request, including any content, has been sent.
void	proxyToServerResolutionFailed(String hostAndPort) Informs filter that proxy to server DNS resolution failed for the specified host and port.
InetSocketAddress	proxyToServerResolutionStarted(String resolvingServerHostAndPort) Filter DNS resolution from proxy to server.
void	proxyToServerResolutionSucceeded(String serverHostAndPort, InetSocketAddress resolvedRemoteAddress) Informs filter that proxy to server DNS resolution has happened.
HttpObject	serverToProxyResponse(HttpObject httpObject) Filters responses on their way from the server to the proxy.
void	serverToProxyResponseReceived() Informs filter that server to proxy response has been received.
void	serverToProxyResponseReceiving() Informs filter that server to proxy response is being received.
void	serverToProxyResponseTimedOut() Informs filter that a timeout occurred before the server response was received by the client.

Methods inherited from class java.lang.Object

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

Field Detail

NOOP_FILTER

public static final HttpFiltersAdapter NOOP_FILTER

A default, stateless, no-op HttpFilters instance.

originalRequest

protected final HttpRequest originalRequest

ctx

protected final ChannelHandlerContext ctx

Constructor Detail

HttpFiltersAdapter

public HttpFiltersAdapter(HttpRequest originalRequest,
                          ChannelHandlerContext ctx)

HttpFiltersAdapter

public HttpFiltersAdapter(HttpRequest originalRequest)

Method Detail

clientToProxyRequest

public HttpResponse clientToProxyRequest(HttpObject httpObject)

Description copied from interface: HttpFilters

Filters requests on their way from the client to the proxy. To interrupt processing of this request and return a response to the client immediately, return an HttpResponse here. Otherwise, return null to continue processing as usual.

Important: When returning a response, you must include a mechanism to allow the client to determine the length of the message (see RFC 7230, section 3.3.3: https://tools.ietf.org/html/rfc7230#section-3.3.3 ). For messages that may contain a body, you may do this by setting the Transfer-Encoding to chunked, setting an appropriate Content-Length, or by adding a "Connection: close" header to the response (which will instruct LittleProxy to close the connection). If the short-circuit response contains body content, it is recommended that you return a FullHttpResponse.

Specified by:

clientToProxyRequest in interface HttpFilters

Parameters:

httpObject - Client to Proxy HttpRequest (and HttpContent, if chunked)

Returns:

a short-circuit response, or null to continue processing as usual

proxyToServerRequest

public HttpResponse proxyToServerRequest(HttpObject httpObject)

Description copied from interface: HttpFilters

Filters requests on their way from the proxy to the server. To interrupt processing of this request and return a response to the client immediately, return an HttpResponse here. Otherwise, return null to continue processing as usual.

Important: When returning a response, you must include a mechanism to allow the client to determine the length of the message (see RFC 7230, section 3.3.3: https://tools.ietf.org/html/rfc7230#section-3.3.3 ). For messages that may contain a body, you may do this by setting the Transfer-Encoding to chunked, setting an appropriate Content-Length, or by adding a "Connection: close" header to the response. (which will instruct LittleProxy to close the connection). If the short-circuit response contains body content, it is recommended that you return a FullHttpResponse.

Specified by:

proxyToServerRequest in interface HttpFilters

Parameters:

httpObject - Proxy to Server HttpRequest (and HttpContent, if chunked)

Returns:

a short-circuit response, or null to continue processing as usual

proxyToServerRequestSending

public void proxyToServerRequestSending()

Description copied from interface: HttpFilters

Informs filter that proxy to server request is being sent.

Specified by:

proxyToServerRequestSending in interface HttpFilters

proxyToServerRequestSent

public void proxyToServerRequestSent()

Description copied from interface: HttpFilters

Informs filter that the HTTP request, including any content, has been sent.

Specified by:

proxyToServerRequestSent in interface HttpFilters

serverToProxyResponse

public HttpObject serverToProxyResponse(HttpObject httpObject)

Description copied from interface: HttpFilters

Filters responses on their way from the server to the proxy.

Specified by:

serverToProxyResponse in interface HttpFilters

Parameters:

httpObject - Server to Proxy HttpResponse (and HttpContent, if chunked)

Returns:

the modified (or unmodified) HttpObject. Returning null will force a disconnect.

serverToProxyResponseTimedOut

public void serverToProxyResponseTimedOut()

Description copied from interface: HttpFilters

Informs filter that a timeout occurred before the server response was received by the client. The timeout may have occurred while the client was sending the request, waiting for a response, or after the client started receiving a response (i.e. if the response from the server "stalls"). See HttpProxyServerBootstrap.withIdleConnectionTimeout(int) for information on setting the timeout.

Specified by:

serverToProxyResponseTimedOut in interface HttpFilters

serverToProxyResponseReceiving

public void serverToProxyResponseReceiving()

Description copied from interface: HttpFilters

Informs filter that server to proxy response is being received.

Specified by:

serverToProxyResponseReceiving in interface HttpFilters

serverToProxyResponseReceived

public void serverToProxyResponseReceived()

Description copied from interface: HttpFilters

Informs filter that server to proxy response has been received.

Specified by:

serverToProxyResponseReceived in interface HttpFilters

proxyToClientResponse

public HttpObject proxyToClientResponse(HttpObject httpObject)

Description copied from interface: HttpFilters

Filters responses on their way from the proxy to the client.

Specified by:

proxyToClientResponse in interface HttpFilters

Parameters:

httpObject - Proxy to Client HttpResponse (and HttpContent, if chunked)

Returns:

the modified (or unmodified) HttpObject. Returning null will force a disconnect.

proxyToServerConnectionQueued

public void proxyToServerConnectionQueued()

Description copied from interface: HttpFilters

Informs filter that proxy to server connection is in queue.

Specified by:

proxyToServerConnectionQueued in interface HttpFilters

proxyToServerResolutionStarted

public InetSocketAddress proxyToServerResolutionStarted(String resolvingServerHostAndPort)

Description copied from interface: HttpFilters

Filter DNS resolution from proxy to server.

Specified by:

proxyToServerResolutionStarted in interface HttpFilters

Parameters:

resolvingServerHostAndPort - Server "HOST:PORT"

Returns:

alternative address resolution. Returning null will let normal DNS resolution continue.

proxyToServerResolutionFailed

public void proxyToServerResolutionFailed(String hostAndPort)

Description copied from interface: HttpFilters

Informs filter that proxy to server DNS resolution failed for the specified host and port.

Specified by:

proxyToServerResolutionFailed in interface HttpFilters

Parameters:

hostAndPort - hostname and port the proxy failed to resolve

proxyToServerResolutionSucceeded

public void proxyToServerResolutionSucceeded(String serverHostAndPort,
                                             InetSocketAddress resolvedRemoteAddress)

Description copied from interface: HttpFilters

Informs filter that proxy to server DNS resolution has happened.

Specified by:

proxyToServerResolutionSucceeded in interface HttpFilters

Parameters:

serverHostAndPort - Server "HOST:PORT"

resolvedRemoteAddress - Address it was proxyToServerResolutionSucceeded to

proxyToServerConnectionStarted

public void proxyToServerConnectionStarted()

Description copied from interface: HttpFilters

Informs filter that proxy to server connection is initiating.

Specified by:

proxyToServerConnectionStarted in interface HttpFilters

proxyToServerConnectionSSLHandshakeStarted

public void proxyToServerConnectionSSLHandshakeStarted()

Description copied from interface: HttpFilters

Informs filter that proxy to server ssl handshake is initiating.

Specified by:

proxyToServerConnectionSSLHandshakeStarted in interface HttpFilters

proxyToServerConnectionFailed

public void proxyToServerConnectionFailed()

Description copied from interface: HttpFilters

Informs filter that proxy to server connection has failed.

Specified by:

proxyToServerConnectionFailed in interface HttpFilters

proxyToServerConnectionSucceeded

public void proxyToServerConnectionSucceeded(ChannelHandlerContext serverCtx)

Description copied from interface: HttpFilters

Informs filter that proxy to server connection has succeeded.

Specified by:

proxyToServerConnectionSucceeded in interface HttpFilters

Parameters:

serverCtx - the ChannelHandlerContext used to connect to the server