Hi all,
I'm at the HackerGarten @ JavaOne15, and write a patch for OpenJDK
community. This's second times from JavaOne14. :)
We find an unexpected exception in JAX-WS, so I write a patch to fix it.
We think that this issue may block the migration to JDK9 from JDK7.
If we bind 0.0.0.0 ( using as wildcard ) to publish multiple as the
following test code, JDK9 (and JDK8) returns "java.net.BindException:
Address already in use.” as the below. But JDK7 does NOT return the
exception.
- Test code for reproduce
---
import javax.jws.*;
import javax.xml.ws.*;
public class WSTest{
@WebService
public static class Method1{
@WebMethod
public String getMethod1Value(){
return "from Method1";
}
}
@WebService
public static class Method2{
@WebMethod
public String getMethod2Value(){
return "from Method2";
}
}
public static void main(String[] args) throws Exception{
Endpoint endPoint1 = Endpoint.publish("http://0.0.0.0:8081/method1";,
new Method1());
Endpoint endPoint2 = Endpoint.publish("http://0.0.0.0:8081/method2";,
new Method2());
System.out.println("Sleep 3 secs...");
Thread.sleep(3000);
endPoint2.stop();
endPoint1.stop();
}
}
---
- StackTrace
---
Exception in thread "main"
com.sun.xml.internal.ws.server.ServerRtException: Server Runtime
Error: java.net.BindException: Address already in use
at
com.sun.xml.internal.ws.transport.http.server.ServerMgr.createContext(ServerMgr.java:117)
at
com.sun.xml.internal.ws.transport.http.server.HttpEndpoint.publish(HttpEndpoint.java:64)
at
com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(EndpointImpl.java:232)
at
com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:126)
at javax.xml.ws.Endpoint.publish(Endpoint.java:240)
at wstest.WSTest.main(WSTest.java:27)
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:432)
at sun.nio.ch.Net.bind(Net.java:424)
at
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at sun.net.httpserver.ServerImpl.<init>(ServerImpl.java:102)
at sun.net.httpserver.HttpServerImpl.<init>(HttpServerImpl.java:50)
at
sun.net.httpserver.DefaultHttpServerProvider.createHttpServer(DefaultHttpServerProvider.java:35)
at com.sun.net.httpserver.HttpServer.create(HttpServer.java:130)
at
com.sun.xml.internal.ws.transport.http.server.ServerMgr.createContext(ServerMgr.java:86)
... 5 more
-----
To publishes the Endpoint, JAX-WS checks whether the HttpContext has
been created by given address, then creates a HttpContext if do not
exist.
If we sets 0.0.0.0 as given address, JAX-WS checks by
ServerSocket#getLocalSocketAddress() (server local address), so
returns BindException when 0.0.0.0 has been blinded already.
Why so? JAX_WS-941[1] fixes NPE in Endpoint.stop but do not think
about above situation. And JAX_WS-941 does not back port to JDK7.
So I write a patch which is based jdk9/dev/jaxws (changeset:
637:2d84c6f4cbba) to fix the BindException with JAX_WS-941.
Please review this patch :)
[1]: https://java.net/jira/browse/JAX_WS-941
- Patch
---
diff -r 2d84c6f4cbba
src/java.xml.ws/share/classes/com/sun/xml/internal/ws/transport/http/server/ServerMgr.java
---
a/src/java.xml.ws/share/classes/com/sun/xml/internal/ws/transport/http/server/ServerMgr.java
Thu Oct 22 08:47:47 2015 -0700
+++
b/src/java.xml.ws/share/classes/com/sun/xml/internal/ws/transport/http/server/ServerMgr.java
Tue Oct 27 19:48:35 2015 +0900
@@ -38,6 +38,7 @@
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.logging.Logger;
+import java.util.Optional;
/**
* Manages all the WebService HTTP servers created by JAXWS runtime.
@@ -81,24 +82,38 @@
synchronized(servers) {
state = servers.get(inetAddress);
if (state == null) {
- logger.fine("Creating new HTTP Server at "+inetAddress);
- // Creates server with default socket backlog
- server = HttpServer.create(inetAddress, 0);
- server.setExecutor(Executors.newCachedThreadPool());
- String path = url.toURI().getPath();
- logger.fine("Creating HTTP Context at = "+path);
- HttpContext context = server.createContext(path);
- server.start();
+ final int finalPortNum = port;
+ Optional<ServerState> stateOpt =
+ servers.values()
+ .stream()
+ .filter(s -> s.getServer()
+ .getAddress()
+ .getPort() ==
finalPortNum)
+ .findAny();
- // we have to get actual inetAddress from server,
which can differ from the original in some cases.
- // e.g. A port number of zero will let the system
pick up an ephemeral port in a bind operation,
- // or IP: 0.0.0.0 - which is used to monitor
network traffic from any valid IP address
- inetAddress = server.getAddress();
+ if (inetAddress.getAddress().isAnyLocalAddress() &&
+ stateOpt.isPresent()) {
+ state = stateOpt.get();
+ } else {
+ logger.fine("Creating new HTTP Server at
"+inetAddress);
+ // Creates server with default socket backlog
+ server = HttpServer.create(inetAddress, 0);
+ server.setExecutor(Executors.newCachedThreadPool());
+ String path = url.toURI().getPath();
+ logger.fine("Creating HTTP Context at = "+path);
+ HttpContext context = server.createContext(path);
+ server.start();
- logger.fine("HTTP server started = "+inetAddress);
- state = new ServerState(server, path);
- servers.put(inetAddress, state);
- return context;
+ // we have to get actual inetAddress from
server, which can differ from the original in some cases.
+ // e.g. A port number of zero will let the
system pick up an ephemeral port in a bind operation,
+ // or IP: 0.0.0.0 - which is used to monitor
network traffic from any valid IP address
+ inetAddress = server.getAddress();
+
+ logger.fine("HTTP server started = "+inetAddress);
+ state = new ServerState(server, path);
+ servers.put(inetAddress, state);
+ return context;
+ }
}
}
server = state.getServer();
---
