My new laptop (Alienware m17x) throws a java.net.SocketException: Invalid argument: connect
when I run the following basic code:
Server.java:
public static void main (String[] args) throws Exception {
ServerSocket serverSocket = new ServerSocket (8888);
Socket socket = serverSocket.accept();
}
Client.java:
public static void main (String[] args) throws Exception {
Socket socket = new Socket ("localhost", 8888);
}
Every time I run Client.java (after starting Server.java) I get this socket exception. Here's the full trace of the exception:
Exception in thread "main" java.net.SocketException: Invalid argument: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at Client.main(Client.java:5)
I've tried a few things, but no luck the exception is always thrown. Here's what I have concluded:
What should I do or check for to resolve this issue?
EDIT: route print outputs:
===========================================================================
Interface List
15...e4 d5 3d 08 cb 83 ......Killer Wireless-N 1103 Network Adapter
13...d0 df 9a b5 73 dc ......Bluetooth Device (Personal Area Network)
11...d4 be d9 00 10 65 ......Atheros AR8151 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
1...........................Software Loopback Interface 1
17...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
16...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
18...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
19...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.191 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.0.0 255.255.255.0 On-link 192.168.0.191 281
192.168.0.191 255.255.255.255 On-link 192.168.0.191 281
192.168.0.255 255.255.255.255 On-link 192.168.0.191 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.0.191 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.0.191 281
===========================================================================
Persistent Routes:
None
IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
17 58 ::/0 On-link
1 306 ::1/128 On-link
17 58 2001::/32 On-link
17 306 2001:0:4137:9e76:28f3:2721:524f:e2ef/128
On-link
15 281 fe80::/64 On-link
17 306 fe80::/64 On-link
17 306 fe80::28f3:2721:524f:e2ef/128
On-link
15 281 fe80::68c1:bc79:fefa:88a2/128
On-link
1 306 ff00::/8 On-link
17 306 ff00::/8 On-link
15 281 ff00::/8 On-link
===========================================================================
Persistent Routes:
None
EDIT: As @PhilippeLM and @beny23 made me realize, setting the java system variable java.net.preferIPv4Stack to true solves my problem. However I want a permanent fix. I don't want to specify the system variable every time I run a java application.
Here's what I've tried with no luck once again:
java.net.preferIPv4Stack=true
to the net.properties
file in %JAVA_HOME%\jre\lib
.Is there anything else I can try?