[jetty-users] InputStreamContentProvider wrapping exceptions

[John Gardiner Myers <jgmyers@xxxxxxxxxxxxxx>]

InputStreamContentProviderIterator.next() wraps failures in a 
NoSuchElementException, presumably because it can't throw an 
IOException. Unfortunately, this tends to obscure the real failure.

Would it make sense for ContentCallback.process() to unwrap the 
NoSuchElementException when it has a cause?

java.util.NoSuchElementException: null
        at 
org.eclipse.jetty.client.util.InputStreamContentProvider$InputStreamContentProviderIterator.next(InputStreamContentProvider.java:231) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.util.InputStreamContentProvider$InputStreamContentProviderIterator.next(InputStreamContentProvider.java:166) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpContent.advance(HttpContent.java:139) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpSender$ContentCallback.process(HttpSender.java:755) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:246) 
~[jetty-util-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:208) 
~[jetty-util-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpSender$CommitCallback.process(HttpSender.java:694) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpSender$CommitCallback.succeeded(HttpSender.java:644) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpSenderOverHTTP$ByteBufferRecyclerCallback.succeeded(HttpSenderOverHTTP.java:238) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:321) 
~[jetty-io-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:129) 
~[jetty-io-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpSenderOverHTTP.sendHeaders(HttpSenderOverHTTP.java:108) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpSender.send(HttpSender.java:183) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpChannelOverHTTP.send(HttpChannelOverHTTP.java:64) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpConnectionOverHTTP$Delegate.send(HttpConnectionOverHTTP.java:188) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpConnectionOverHTTP.send(HttpConnectionOverHTTP.java:75) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpDestinationOverHTTP.send(HttpDestinationOverHTTP.java:36) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.http.HttpDestinationOverHTTP.send(HttpDestinationOverHTTP.java:26) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.PoolingHttpDestination.process(PoolingHttpDestination.java:138) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.PoolingHttpDestination.send(PoolingHttpDestination.java:73) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpDestination.send(HttpDestination.java:187) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpClient.send(HttpClient.java:518) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpRequest.send(HttpRequest.java:682) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.eclipse.jetty.client.HttpRequest.send(HttpRequest.java:675) 
~[jetty-client-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
com.proofpoint.http.client.jetty.JettyHttpClient.execute(JettyHttpClient.java:214) 
~[http-client-1.15.jar:na]
        at 
com.proofpoint.http.client.balancing.BalancingHttpClient.execute(BalancingHttpClient.java:96) 
~[http-client-1.15.jar:na]
[...elided...]
Caused by: org.eclipse.jetty.io.EofException: Early EOF
        at 
org.eclipse.jetty.server.HttpInput$3.noContent(HttpInput.java:505) 
~[jetty-server-9.2.9.v20150224.jar:9.2.9.v20150224]
        at org.eclipse.jetty.server.HttpInput.read(HttpInput.java:124) 
~[jetty-server-9.2.9.v20150224.jar:9.2.9.v20150224]
        at 
org.glassfish.jersey.message.internal.EntityInputStream.read(EntityInputStream.java:101) 
~[jersey-common-2.13.jar:na]
        at 
org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream.read(ReaderInterceptorExecutor.java:300) 
~[jersey-common-2.13.jar:na]
        at java.io.FilterInputStream.read(FilterInputStream.java:133) 
~[na:1.7.0_75]
[...elided...]