I am testing about MSSQL. "how to long session information created after after connection?"
So, try to connection with MSSQL JDBC, then select the sys.dm_exec_session and sys.dm_exec_connection with client Ip and port.
But, I don't have any idea, how to get Client Ip and port from JDBC connection.
or is it possible create JDBC connection using socket?
show my test code.
try {
DriverManager.registerDriver(
new com.microsoft.sqlserver.jdbc.SQLServerDriver());
DriverManager.setLoginTimeout(10);
} catch (Exception ex) {
System.out.println("Fail to register sqlserver driver.");
return;
}
String url = "jdbc:sqlserver://";
String ip = "10.1.1.1";
String port = "1433";
String catalog = "master";
String user = "jtlee";
String pwd = "123456789";
url = url + ip + ":" + port + ";databasename=" + catalog;
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
long startTime = System.nanoTime();
conn = DriverManager.getConnection(url, user, pwd);
pstmt = conn.prepareStatement(
"SELECT "
+ " count(*) "
+ "FROM "
+ " sys.dm_exec_connections connections,"
+ " sys.dm_exec_sessions sessions "
+ "WHERE "
+ " connections.session_id = sessions.session_id "
+ " and connections.client_net_address= ? "
+ " and connections.client_tcp_port= ? ");
/* I need this information... */
String clientIp;
int clientPort;
pstmt.setString(1, clientIp);
pstmt.setInt(2, clientPort);
rs = pstmt.executeQuery();
if (rs.next()) {
...
thanks for reading my strange English.
If you want to get the IP and port for an active connection you can just query sys.dm_exec_connections
with WHERE session_id=@@SPID
, eg,
sql =
"SELECT client_net_address, client_tcp_port, local_net_address, local_tcp_port " +
"FROM sys.dm_exec_connections " +
"WHERE session_id=@@SPID";
try (
Statement st = conn.createStatement();
ResultSet rs = st.executeQuery(sql)) {
while (rs.next()) {
System.out.printf("Connection is between %s:%d on the server and %s:%d as the client.%n",
rs.getString("local_net_address"),
rs.getInt("local_tcp_port"),
rs.getString("client_net_address"),
rs.getInt("client_tcp_port")
);
}
}
producing
Connection is between 192.168.1.12:1433 on the server and 192.168.1.101:49744 as the client.
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