For a request that comes in to the server, this function returns information about the connection properties of the unique connection which supports that request.
CONNECTIONPROPERTY ( property )
To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation.
The property of the connection. property can have one of these values:
|net_transport||nvarchar(40)||Returns the physical transport protocol used by this connection. This value is not nullable. Possible return values:
Note: Always returns Session when a connection has both multiple active result sets (MARS) enabled, and connection pooling enabled.
|protocol_type||nvarchar(40)||Returns the payload protocol type. It currently distinguishes between TDS (TSQL) and SOAP. Is nullable.|
|auth_scheme||nvarchar(40)||Returns the connection SQL Server authentication scheme. 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 specific connection targeted. Available only for connections that use 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 uses the TCP transport. Is nullable.|
|client_net_address||varchar(48)||Asks for the address of the client that tries to connect to this server. Is nullable.|
|physical_net_transport||nvarchar(40)||Returns the physical transport protocol used by this connection. Accurate when a connection has multiple active result sets (MARS) enabled.|
|<Any other string>||Returns NULL for invalid input.|
local_net_address and local_tcp_port return NULL in SQL Database.
The returned values match 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';