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CONNECTIONPROPERTY (Transact-SQL)

Returns information about the connection properties for the unique connection that a request came in on.

Applies to: SQL Server (SQL Server 2008 through current version).

Topic link icon Transact-SQL Syntax Conventions

CONNECTIONPROPERTY ( property )

property

Is the property of the connection. property can be one of the following values.

Value

Data type

Description

net_transport

nvarchar(40)

Returns the physical transport protocol that is used by this connection. Is not nullable.

Return values are: HTTP, Named pipe, Session, Shared memory, SSL, TCP, and VIA.

Note Note

Always returns Session when a connection has multiple active result sets (MARS) enabled, and connection pooling is enabled.

protocol_type

nvarchar(40)

Returns the protocol type of the payload. It currently distinguishes between TDS (TSQL) and SOAP. Is nullable.

auth_scheme

nvarchar(40)

Returns the SQL Server Authentication scheme for a connection. The authentication scheme is either Windows Authentication (NTLM, KERBEROS, DIGEST, BASIC, NEGOTIATE) or SQL Server Authentication. Is not nullable.

local_net_address

varchar(48)

Returns the IP address on the server that this connection targeted. Available only for connections that are using the TCP transport provider. Is nullable.

local_tcp_port

int

Returns the server TCP port that this connection targeted if the connection were a connection that is using the TCP transport. Is nullable.

client_net_address

varchar(48)

Asks for the address of the client that is connecting to this server. Is nullable.

physical_net_transport

nvarchar(40)

Returns the physical transport protocol that is used by this connection. Accurate when a connection has multiple active result sets (MARS) enabled.

<Any other string>

 

Returns NULL if the input is not valid.

The values that are returned are the same as the options shown for the corresponding columns in the sys.dm_exec_connections dynamic management view. For example:

SELECT 
ConnectionProperty('net_transport') AS 'Net transport', 
ConnectionProperty('protocol_type') AS 'Protocol type';
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