Citrix Systems Network Router 9.2 Benutzerhandbuch

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Chapter 6        Advanced Expressions: Parsing HTTP, TCP, and UDP Data
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CLIENT.UDP.DNS.IS_MXREC
Returns a Boolean TRUE if the record is of type 
MX (mail exchanger). This DNS record describes 
a priority and a host name. The MX records for the 
same domain name specify the email servers in the 
domain and the priority for each server.
CLIENT.UDP.DNS.IS_NSREC
Returns a Boolean TRUE if the record is of type 
NS. This is a name server record that includes a 
host name with an associated A record. This 
enables locating the domain name that is 
associated with the NS record. 
CLIENT.UDP.DNS.IS_PTRREC
Returns a Boolean TRUE if the record is of type 
PTR. This is a domain name pointer and is often 
used to associate a domain name with an IPv4 
address.
CLIENT.UDP.DNS.IS_SOAREC
Returns a Boolean TRUE if the record is of type 
SOA. This is a start of authority record.
CLIENT.UDP.DNS.IS_SRVREC
Returns a Boolean TRUE if the record is of type 
SRV. This is a more general version of the MX 
record.
CLIENT.UDP.DSTPORT
Returns the numeric ID of the current packet's 
UDP destination port.
CLIENT.UDP.SRCPORT
Returns the numeric ID of the current packet's 
UDP source port.
CLIENT.UDP.RADIUS 
Returns RADIUS data for the current packet.
CLIENT.UDP.RADIUS.ATTR_
TYPE(type)
Returns the value for the attribute type specified as 
the argument.
CLIENT.UDP.RADIUS.USERNAME
Returns the RADIUS user name.
CLIENT.TCP.MSS
Returns the maximum segment size (MSS) for the 
current connection as a number.
CLIENT.VLAN.ID
Returns the numeric ID of the VLAN through 
which the current packet entered the NetScaler.
SERVER.TCP.DSTPORT
Returns the numeric ID of the current packet's 
destination port.
SERVER.TCP.SRCPORT
Returns the numeric ID of the current packet's 
source port.
SERVER.VLAN 
Operates on the VLAN through which the current 
packet entered the NetScaler.
SERVER.VLAN.ID
Returns the numeric ID of the VLAN through 
which the current packet entered the NetScaler.
Prefixes that Extract TCP and UDP Data
GET Operation
Description