问题
I'm trying to connect using Jersey Client to a REST service.
When I'm using IPv4 address everything works fine.
When I'm trying to replace the server address with its IPv6 the following exception is thrown:
com.sun.jersey.api.client.ClientHandlerException: java.net.SocketException: Protocol family unavailable at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:128) at com.sun.jersey.api.client.Client.handle(Client.java:551) at com.sun.jersey.api.client.WebResource.handle(WebResource.java:556) at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:69) at com.sun.jersey.api.client.WebResource$Builder.put(WebResource.java:475) at com.bmc.aps.agent.jersey.JerseyClient.put(JerseyClient.java:169) at com.bmc.aps.agent.portal.PortalConnection.handshake(PortalConnection.java:304) at com.bmc.aps.agent.portal.PortalConnection.run(PortalConnection.java:786) at java.lang.Thread.run(Thread.java:636) Caused by: java.net.SocketException: Protocol family unavailable at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:310) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:176) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:163) at java.net.Socket.connect(Socket.java:537) at java.net.Socket.connect(Socket.java:487) at sun.net.NetworkClient.doConnect(NetworkClient.java:174) at sun.net.www.http.HttpClient.openServer(HttpClient.java:409) at sun.net.www.http.HttpClient.openServer(HttpClient.java:530) at sun.net.www.http.HttpClient.(HttpClient.java:240) at sun.net.www.http.HttpClient.New(HttpClient.java:321) at sun.net.www.http.HttpClient.New(HttpClient.java:338) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:806) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:747) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:672) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:850) at com.sun.jersey.client.urlconnection.URLConnectionClientHandler$1$1.getOutputStream(URLConnectionClientHandler.java:200) at com.sun.jersey.api.client.CommittingOutputStream.commitWrite(CommittingOutputStream.java:114) at com.sun.jersey.api.client.CommittingOutputStream.write(CommittingOutputStream.java:86) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:220) at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:290) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:294) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:140) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:253) at com.sun.jersey.core.util.ReaderWriter.writeToAsString(ReaderWriter.java:178) at com.sun.jersey.core.provider.AbstractMessageReaderWriterProvider.writeToAsString(AbstractMessageReaderWriterProvider.java:125) at com.sun.jersey.core.impl.provider.entity.StringProvider.writeTo(StringProvider.java:85) at com.sun.jersey.core.impl.provider.entity.StringProvider.writeTo(StringProvider.java:57) at com.sun.jersey.api.client.TerminatingClientHandler.writeRequestEntity(TerminatingClientHandler.java:291) at com.sun.jersey.client.urlconnection.URLConnectionClientHandler._invoke(URLConnectionClientHandler.java:179) at com.sun.jersey.client.urlconnection.URLConnectionClientHandler.handle(URLConnectionClientHandler.java:126) ... 8 more
I tried running with -Djava.net.preferIPv4Stack=false and -Djava.net.preferIPv6Stack=true but it didn't help.
The same code with IPv6 works on the same machine on Weblogic.
Any suggestions?
回答1:
Start JBoss in this way
JBoss 7 : ./standalone.sh -Djava.net.preferIPv4Stack=false
or
JBoss 7 : ./standalone.sh -Djava.net.preferIPv6Stack=true
By default IPv4 is enabled in Java, you need to tell explicitly to use Ipv6
回答2:
This problem indeed resolves by setting -Djava.net.preferIPv4Stack=false, but passing it as an argument to ./standalone.sh is not enough as this value is rewritten in standalone.conf and standalone.sh.
Therefor, what should be done is searching for -Djava.net.preferIPv4Stack=true inside both files and modifying them to -Djava.net.preferIPv4Stack=false.
来源：https://stackoverflow.com/questions/17785854/jesey-client-on-jboss-7-1-1-throw-java-net-socketexception-protocol-family-unav