Michael Scheepers created CXF-7357:
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             Summary: UnknownHostException not thrown during POST request
                 Key: CXF-7357
                 URL: https://issues.apache.org/jira/browse/CXF-7357
             Project: CXF
          Issue Type: Bug
    Affects Versions: 3.1.11
         Environment: Windows 7, Java 8
            Reporter: Michael Scheepers


I'm using Apache CXF client with async http client and JAXRS client factory to 
access RESTful services.
When specifying an invalid host name and than executing a POST request instead 
of the expected {{UnknownHostException}} a {{IllegalStateException}} is thrown 
by the client proxy.
Anyway, for GET requests the {{UnknownHostException}} is thrown as expected.
Stacktrace:
{code:java}
WARNING: Interceptor for {http://resource.path.definition/}ServiceName has 
thrown exception, unwinding now
java.lang.IllegalStateException: IllegalStateException invoking 
https://www.unknown-host-name.com/some/url: Buffer already closed for writing
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at 
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.mapException(HTTPConduit.java:1385)
        at 
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1374)
        at 
org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduit$AsyncWrappedOutputStream.close(AsyncHTTPConduit.java:415)
        at 
org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
        at org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:653)
        at 
org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
        at 
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
        at 
org.apache.cxf.jaxrs.client.AbstractClient.doRunInterceptorChain(AbstractClient.java:677)
        at 
org.apache.cxf.jaxrs.client.ClientProxyImpl.doChainedInvocation(ClientProxyImpl.java:783)
        at 
org.apache.cxf.jaxrs.client.ClientProxyImpl.invoke(ClientProxyImpl.java:235)
        at com.sun.proxy.$Proxy17.someUrl(Unknown Source)
Caused by: java.lang.IllegalStateException: Buffer already closed for writing
        at 
org.apache.cxf.transport.http.asyncclient.SharedOutputBuffer.write(SharedOutputBuffer.java:229)
        at 
org.apache.cxf.transport.http.asyncclient.AsyncHTTPConduit$AsyncWrappedOutputStream$1.write(AsyncHTTPConduit.java:431)
        at 
org.apache.cxf.io.AbstractWrappedOutputStream.write(AbstractWrappedOutputStream.java:51)
        at 
org.apache.cxf.io.AbstractThresholdOutputStream.write(AbstractThresholdOutputStream.java:69)
        at 
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1341)
        ... 10 more
{code}



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