Re: [JDBC] trying to connect to pg from within a local network

From: Albretch Mueller <lbrtchx(at)gmail.com>
Date: Fri Jan 18 2008 - 12:13:50 EST

~

 Well, I went:
~

 Start > Control Panel > Windows Firewall
~

 and it is: "off (not recommended)"
~

 Something I still am not sure about is how to:
~

 "Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connnections"
~

 There is nothing I can see in pg_hba.conf or postgres.conf that relates to TCP/IP connnections and I think it is a pg thing, because when I run tomcat on port 8080 on this box, I can telnet to it without any problems
~

 Tomcat is using a pg-based JDBCRealm, that means it is connecting to it without any problems
~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ FROM client~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
C:\>ipconfig -all

Windows IP Configuration

        Host Name . . . . . . . . . . . . : BKN-2008
        Primary Dns Suffix  . . . . . . . : thetrade.com
        Node Type . . . . . . . . . . . . : Unknown
        IP Routing Enabled. . . . . . . . : No
        WINS Proxy Enabled. . . . . . . . : No
        DNS Suffix Search List. . . . . . : thetrade.com
                                            thetrade

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Broadcom 440x 10/100
Integrated Controller
        Physical Address. . . . . . . . . : 00-16-45-0E-F5-27
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        IP Address. . . . . . . . . . . . : 10.0.31.62
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 10.0.31.1
        DHCP Server . . . . . . . . . . . : 10.0.31.1
        DNS Servers . . . . . . . . . . . : 10.0.1.23
                                            10.0.1.74
        Lease Obtained. . . . . . . . . . : Friday, January 18, 2008 9:34:04 AM
        Lease Expires . . . . . . . . . . : Saturday, January 19, 2008

9:34:04 AM

C:\>telnet bkn-04 5432
Connecting To bkn-04...Could not open connection to the host, on port 5432: Connect failed

C:\>telnet 10.0.31.88 5432
Connecting To 10.0.31.88...Could not open connection to the host, on port 5432: Connect failed
~

C:\>telnet bkn-04 8080
 (connects OK)
~

C:\>telnet 10.0.31.88 8080
 (connects OK)
~

C:\cmllpz\prjx\java\JDBC\PG>java PG00Test

// __ aDrvr: |org.postgresql.Driver|
// __ aDBURL: |jdbc:postgresql://bkn-04:5432/postgres|
// __ Class.forName(org.postgresql.Driver): |class org.postgresql.Driver|
// __ (Driver)KDrvr.newInstance() :|org.postgresql.Driver@1893efe|
// __ DriverManager.registerDriver(OKDrvr);

org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP con

        at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:122)
        at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66)
        at org.postgresql.jdbc2.AbstractJdbc2Connection.(AbstractJdbc2Connection.java:125)
        at org.postgresql.jdbc3.AbstractJdbc3Connection.(AbstractJdbc3Connection.java:30)
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        at org.postgresql.jdbc4.AbstractJdbc4Connection.(AbstractJdbc4Connection.java:18)
        at org.postgresql.jdbc4.Jdbc4Connection.(Jdbc4Connection.java:24)
        at org.postgresql.Driver.makeConnection(Driver.java:382)
        at org.postgresql.Driver.connect(Driver.java:260)
        at java.sql.DriverManager.getConnection(DriverManager.java:582)
        at java.sql.DriverManager.getConnection(DriverManager.java:185)
        at PG00.(PG00Test.java:26)
        at PG00Test.main(PG00Test.java:213)
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
        at java.net.Socket.connect(Socket.java:518)
        at java.net.Socket.connect(Socket.java:468)
        at java.net.Socket.(Socket.java:365)
        at java.net.Socket.(Socket.java:179)
        at org.postgresql.core.PGStream.(PGStream.java:59)
        at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:77)
        ... 11 more

// __ database connection could not be set up!

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Received on Fri Jan 18 12:15:46 2008