Package org.dcache.xrootd.protocol.messages

Class ProtocolResponse

java.lang.Object

org.dcache.xrootd.protocol.messages.AbstractXrootdResponse<ProtocolRequest>

org.dcache.xrootd.protocol.messages.ProtocolResponse

All Implemented Interfaces:

XrootdResponse<ProtocolRequest>

public class ProtocolResponse
extends AbstractXrootdResponse<ProtocolRequest>

According to protocol, has the following packet structure:

kXR_char	streamid[2]
kXR_unt16	0
kXR_int32	dlen
kXR_int32	pval
kXR_int32	flags
kXR_char	'S'
kXR_char	rsvd
kXR_char	secver
kXR_char	secopt
kXR_char	seclvl
kXR_char	secvsz
{kXR_char,kXR_char}	[reqidx,reqlvl]

dlen is either 8, if no security requirements are returned, or 14 + secvsz*2.

For the moment, the dCache server does not set any overrides, but merely communicates the security level (this determines which requests it expects to be preceded by a signed hash verification request). This may change in the future, so provision is made for non-zero secvsz.

Signing can be enforced if the protocol does not provide encryption by setting a dCache property. In this case, secopt should be set to kXR_secOFrce

Field Summary

Fields inherited from class org.dcache.xrootd.protocol.messages.AbstractXrootdResponse

request, stat

Constructor Summary

Constructors

Constructor	Description
ProtocolResponse(ProtocolRequest request, int flags)
ProtocolResponse(ProtocolRequest request, int flags, SigningPolicy signingPolicy)

Method Summary

Modifier and Type	Method	Description
protected void	getBytes(io.netty.buffer.ByteBuf buffer)
int	getDataLength()	Returns the length of the response body.
int	getFlags()
SigningPolicy	getSigningPolicy()
java.lang.String	toString()

Methods inherited from class org.dcache.xrootd.protocol.messages.AbstractXrootdResponse

getRequest, getStatus, writeTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ProtocolResponse

public ProtocolResponse(ProtocolRequest request,
                        int flags)

ProtocolResponse

public ProtocolResponse(ProtocolRequest request,
                        int flags,
                        SigningPolicy signingPolicy)

Method Detail

getFlags

public int getFlags()

getSigningPolicy

public SigningPolicy getSigningPolicy()

getDataLength

public int getDataLength()

Description copied from interface: XrootdResponse

Returns the length of the response body. This is the value of the dlen field in the Xrootd Server Response Format. This does not include the length of the 8 byte header.

Specified by:

getDataLength in interface XrootdResponse<ProtocolRequest>

Specified by:

getDataLength in class AbstractXrootdResponse<ProtocolRequest>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getBytes

protected void getBytes(io.netty.buffer.ByteBuf buffer)

Specified by:

getBytes in class AbstractXrootdResponse<ProtocolRequest>