net.sourceforge.jtds.jdbc
Class MSSqlServerInfo
java.lang.Object
net.sourceforge.jtds.jdbc.MSSqlServerInfo
public class MSSqlServerInfo
extends java.lang.Object
This class communicates with SQL Server 2k to determine what ports its
instances are listening to. It does this by sending a UDP packet with the
byte 0x02 in it, and parsing the response.
An example of the return packet format is as follows:
<3200000000 05 ea 00 53 65 72 76 65 72 4e 61 6d 65 3b 42 52 # ...ServerName;BR
<3200000010 49 4e 4b 4c 45 59 3b 49 6e 73 74 61 6e 63 65 4e # INKLEY;InstanceN
<3200000020 61 6d 65 3b 4d 53 53 51 4c 53 45 52 56 45 52 3b # ame;MSSQLSERVER;
<3200000030 49 73 43 6c 75 73 74 65 72 65 64 3b 4e 6f 3b 56 # IsClustered;No;V
<3200000040 65 72 73 69 6f 6e 3b 38 2e 30 30 2e 31 39 34 3b # ersion;8.00.194;
<3200000050 74 63 70 3b 31 34 33 33 3b 6e 70 3b 5c 5c 42 52 # tcp;1433;np;\\BR
<3200000060 49 4e 4b 4c 45 59 5c 70 69 70 65 5c 73 71 6c 5c # INKLEY\pipe\sql\
<3200000070 71 75 65 72 79 3b 3b 53 65 72 76 65 72 4e 61 6d # query;;ServerNam
<3200000080 65 3b 42 52 49 4e 4b 4c 45 59 3b 49 6e 73 74 61 # e;BRINKLEY;Insta
<3200000090 6e 63 65 4e 61 6d 65 3b 44 4f 47 3b 49 73 43 6c # nceName;DOG;IsCl
<32000000a0 75 73 74 65 72 65 64 3b 4e 6f 3b 56 65 72 73 69 # ustered;No;Versi
<32000000b0 6f 6e 3b 38 2e 30 30 2e 31 39 34 3b 74 63 70 3b # on;8.00.194;tcp;
<32000000c0 33 35 34 36 3b 6e 70 3b 5c 5c 42 52 49 4e 4b 4c # 3546;np;\\BRINKL
<32000000d0 45 59 5c 70 69 70 65 5c 4d 53 53 51 4c 24 44 4f # EY\pipe\MSSQL$DO
<32000000e0 47 5c 73 71 6c 5c 71 75 65 72 79 3b 3b # G\sql\query;;
$Id: MSSqlServerInfo.java,v 1.8 2005/04/20 16:49:22 alin_sinpalean Exp $
numRetries
private int numRetries
serverInfoStrings
private String[] serverInfoStrings
timeout
private int timeout
MSSqlServerInfo
public MSSqlServerInfo(String host)
throws SQLException
extractString
private static final String extractString(byte[] buf,
int len)
getPortForInstance
public int getPortForInstance(String instanceName)
throws SQLException
Call getInfo() before calling this method. It parses the info string
returned from SQL Server and looks for the port for the given named
instance. If it can't be found, or if getInfo() hadsn't been called,
it returns -1.
- port the given instance is listening on, or -1 if it can't be
found.
split
public static String[] split(String s,
int ch)
Generated on June 12 2008