Package com.couchbase.client.core.io.netty.kv

Class MemcacheProtocolVerificationHandler

java.lang.Object

com.couchbase.client.core.deps.io.netty.channel.ChannelHandlerAdapter

com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandlerAdapter

com.couchbase.client.core.deps.io.netty.channel.ChannelDuplexHandler

com.couchbase.client.core.io.netty.kv.MemcacheProtocolVerificationHandler

All Implemented Interfaces:

com.couchbase.client.core.deps.io.netty.channel.ChannelHandler, com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandler, com.couchbase.client.core.deps.io.netty.channel.ChannelOutboundHandler

public class MemcacheProtocolVerificationHandler
extends com.couchbase.client.core.deps.io.netty.channel.ChannelDuplexHandler

This handler makes sure that the KV protocol packets passed around are not malformed.

This handler is purely here for defense in-depth against malformed packets. For performance reasons, it only checks the basic structure and length fields and cannot do any deep-packet inspection.

Nested Class Summary

Nested classes/interfaces inherited from interface com.couchbase.client.core.deps.io.netty.channel.ChannelHandler

com.couchbase.client.core.deps.io.netty.channel.ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor	Description
MemcacheProtocolVerificationHandler(EndpointContext endpointContext)	Creates a new MemcacheProtocolVerificationHandler.

Method Summary

Modifier and Type	Method	Description
void	channelRead(com.couchbase.client.core.deps.io.netty.channel.ChannelHandlerContext ctx, Object response)	Makes sure that incoming responses are valid.
void	write(com.couchbase.client.core.deps.io.netty.channel.ChannelHandlerContext ctx, Object request, com.couchbase.client.core.deps.io.netty.channel.ChannelPromise promise)	Makes sure that outgoing requests are valid.

Methods inherited from class com.couchbase.client.core.deps.io.netty.channel.ChannelDuplexHandler

bind, close, connect, deregister, disconnect, flush, read

Methods inherited from class com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class com.couchbase.client.core.deps.io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, handlerRemoved, isSharable

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.couchbase.client.core.deps.io.netty.channel.ChannelHandler

handlerAdded, handlerRemoved

Constructor Detail

MemcacheProtocolVerificationHandler

public MemcacheProtocolVerificationHandler(EndpointContext endpointContext)

Creates a new MemcacheProtocolVerificationHandler.

Parameters:

endpointContext - the core context used to refer to values like the core id.

Method Detail

write

public void write(com.couchbase.client.core.deps.io.netty.channel.ChannelHandlerContext ctx,
                  Object request,
                  com.couchbase.client.core.deps.io.netty.channel.ChannelPromise promise)

Makes sure that outgoing requests are valid.

Specified by:

write in interface com.couchbase.client.core.deps.io.netty.channel.ChannelOutboundHandler

Overrides:

write in class com.couchbase.client.core.deps.io.netty.channel.ChannelDuplexHandler

Parameters:

ctx - the context to use.

request - the request to check.

promise - the write promise.

channelRead

public void channelRead(com.couchbase.client.core.deps.io.netty.channel.ChannelHandlerContext ctx,
                        Object response)

Makes sure that incoming responses are valid.

Specified by:

channelRead in interface com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandler

Overrides:

channelRead in class com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandlerAdapter

Parameters:

ctx - the context to use.

response - the response to check.