Which IBM MQ clients can read each attribute

Most of the attributes in the IBM® MQ MQI client configuration file can be used by the C client, and the unmanaged .NET clients. However, there are some attributes that are not read by managed .NET and XMS .NET clients, or by clients using either the IBM MQ classes for Java or the IBM MQ classes for JMS.

Table 1. Which attributes apply to each type of client

mqclient.ini stanza name and attributes	Description	C and unmanaged .NET	Java	JMS	Managed .NET	Managed XMS .NET
CHANNELS stanza
CCSID	The coded character set number to be used.	Yes	No	No	Yes	Yes
ChannelDefinitionDirectory	The directory path to the file containing the client channel definition table.	Yes	No	No	Yes	Yes
ChannelDefinitionFile	The name of the file containing the client channel definition table.	Yes	No	No	Yes	Yes
ReconDelay	An administrative option to configure reconnect delay for client programs that can auto-reconnect.	Yes	No	Yes	Yes	Yes
DefRecon	An administrative option to enable client programs to automatically reconnect, or to disable the automatic reconnection of a client program that has been written to reconnect automatically.	Yes	No	Yes	Yes	Yes
MQReconnectTimeout	The timeout in seconds to reconnect to a client.	Yes	No	No	Yes	No
ServerConnectionParms	The location of the IBM MQ server and the communication method to be used.	Yes	No	No	Yes	Yes
Put1DefaultAlwaysSync	Controls the behavior of the MQPUT1 function call with the option MQPMO_RESPONSE_AS_Q_DEF.	Yes	Yes	Yes	Yes	Yes
PasswordProtection	Allows you to set protected passwords in the MQCSP structure, rather than using SSL or TLS.	Yes	Yes	Yes	Yes	Yes
ClientExitPath stanza
ExitsDefaultPath	Specifies the location of 32-bit channel exits for clients.	Yes	Yes	Yes	Yes	Yes
ExitsDefaultPath64	Specifies the location of 64-bit channel exits for clients.	Yes	Yes	Yes	Yes	Yes
JavaExitsClassPath	The values to be added to the classpath when a Java exit is run.	No	Yes	Yes	No	No
Connection stanza
ApplName	The application name specified in the client configuration file.	Yes	No	No	No	No
JMQI stanza
useMQCSPauthentication	Controls whether IBM MQ classes for Java and IBM MQ classes for JMS applications should use Compatibility mode or MQCSP authentication mode when authenticating with a queue manager.	No	Yes	Yes	No	No
MessageBuffer stanza
MaximumSize	Size, in kilobytes, of the read-ahead buffer, in the range 1 through 999 999.	Yes	Yes	Yes	Yes	Yes
PurgeTime	Interval, in seconds, after which messages left in the read-ahead buffer are purged.	Yes	Yes	Yes	Yes	Yes
UpdatePercentage	The update percentage value, in the range of 1 - 100, used in calculating the threshold value to determine when a client application makes a new request to the server.	Yes	Yes	Yes	Yes	Yes
PreConnect stanza
Data	URL of the repository where connection definitions are stored.	Yes	No	No	No	No
Function	Name of the functional entry point into the library that contains the PreConnect exit code.	Yes	No	No	No	No
Module	The name of the module containing the API exit code.	Yes	No	No	No	No
Sequence	The sequence in which this exit is called relative to other exits.	Yes	No	No	No	No
Security stanza
DisableClientAMS	Disables or enables AMS for client connections to a queue manager.	Yes	Yes	Yes	No	No
SSL stanza
OutboundSNI	Specifies whether SNI capable clients will set SNI to the target IBM MQ channel name to the remote system when initiating a TLS connection, or to the hostname.	Yes	Yes	Yes	Yes	No
AllowOutboundSNI	Specifies whether SNI capable clients will set SNI to the target IBM MQ channel name to the remote system when initiating a TLS connection. Attention: From IBM MQ 9.2.1 this property is deprecated, use OutboundSNI instead.	Yes	Yes	Yes	No	No
AllowTLSV13	Whether a queue manager is able to use the TLS 1.3 CipherSpecs.	Yes (C/C++ clients)	No	No	No	No
CDPCheckExtensions	Specifies whether SSL or TLS channels on this queue manager try to check CDP servers that are named in CrlDistributionPoint certificate extensions.	Yes	No	No	No	No
CertificateLabel	The certificate label of the channel definition.	Yes	No	No	No	No
CertificateValPolicy	Determines the type of certificate validation used.	Yes	No	No	No	No
ClientRevocationChecks	Determines how certificate revocation checking is configured if the client connect call uses an SSL/TLS channel.	Yes	No	No	No	No
EncryptionPolicySuiteB	Determines whether a channel uses Suite-B compliant cryptography and what level of strength is to be used.	Yes	No	No	No	No
EnvironmentScope	Controls whether IBM MQ uses a single GSKit Environment for the entire process or a GSKit environment per connection.	Yes (C clients)	No	No	No	No
MinimumRSAKeySize	Specifies the minimum keysize that RSA certificates must have in order to be accepted.	Yes (C/C++ clients)	No	No	No	No
OCSPAuthentication	Defines the behavior of IBM MQ when OCSP is enabled and the OCSP revocation check is unable to determine the certificate revocation status.	Yes	No	No	No	No
OCSPCheckExtensions	Controls whether IBM MQ acts on AuthorityInfoAccess certificate extensions.	Yes	No	No	No	No
OCSPTimeout	The number of seconds to wait for an OCSP responder when performing a revocation check.	Yes	No	No	No	No
PeerCertChainValidation	The GSKit certificate validation setting.	Yes	No	No	No	No
SSLCryptoHardware	Sets the parameter string required to configure PKCS #11 cryptographic hardware present on the system.	Yes	No	No	No	No
SSLFipsRequired	Specifies whether only FIPS-certified algorithms are to be used if cryptography is carried out in IBM MQ.	Yes	No	No	No	No
SSLHTTPProxyName	The string is either the host name or network address of the HTTP Proxy server that is to be used by GSKit for OCSP checks.	Yes	No	No	No	No
SSLKeyRepository	The location of the key repository that holds the user's digital certificate, in stem format.	Yes	No	No	No	No
SSLKeyResetCount	The number of unencrypted bytes sent and received on an SSL or TLS channel before the secret key is renegotiated.	Yes	No	No	No	No
TCP stanza
ClntRcvBuffSize	The size in bytes of the TCP/IP receive buffer used by the client end of a client-connection server-connection channel.	Yes	Yes	Yes	Yes	Yes
ClntSndBuffSize	The size in bytes of the TCP/IP send buffer used by the client end of a client-connection server-connection channel.	Yes	Yes	Yes	Yes	Yes
Connect_Timeout	The number of seconds before an attempt to connect the socket times out.	Yes	Yes	Yes	No	No
IPAddressVersion	Specifies which IP protocol to use for a channel connection.	Yes	No	No	Yes	Yes
KeepAlive	Switches the KeepAlive function on or off.	Yes	Yes	Yes	Yes	Yes
Library1	On Windows only, the name of the TCP/IP sockets DLL.	Yes	No	No	No	No