Mantis - Hessian
Viewing Issue Advanced Details
ID: Category: Severity: Reproducibility: Date Submitted: Last Update:
5093 major always 05-28-12 23:35 05-28-12 23:50
Reporter: MicW Platform:  
Assigned To: OS:  
Priority: normal OS Version:  
Status: new Product Version: 4.0.7  
Product Build: Resolution: open  
Projection: none      
ETA: none Fixed in Version:  
Summary: 0005093: Transfer of Large Binary Data not working within Objects
Description: 0003655 fixes the issue for 4.0.x for the case if a method returns an InputStream:

public InputStream getDownload(String filename);

But if the Stream is contained within a result Object, all Versions of Hessian (3.1.3, 3.1.5, 4.0.7) fails:

public Download getDownload(String filename);

public class Download {
   String filename;
   InputStream data;
}

The exception on the client side is like in 0003655 (Stream is closed).
Steps To Reproduce:
Additional Information:
Relationships
Attached Files:

Notes
(0005785)
MicW   
05-28-12 23:41   
java.io.IOException: stream is closed
    at sun.net.www.http.ChunkedInputStream.ensureOpen(ChunkedInputStream.java:151)
    at sun.net.www.http.ChunkedInputStream.read(ChunkedInputStream.java:646)
    at java.io.FilterInputStream.read(FilterInputStream.java:116)
    at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:2672)
    at com.caucho.hessian.io.Hessian2Input.readBuffer(Hessian2Input.java:2783)
    at com.caucho.hessian.io.Hessian2Input.read(Hessian2Input.java:2755)
    at com.caucho.hessian.io.Hessian2Input.parseByte(Hessian2Input.java:2638)
    at com.caucho.hessian.io.Hessian2Input.access$0(Hessian2Input.java:2594)
    at com.caucho.hessian.io.Hessian2Input$ReadInputStream.read(Hessian2Input.java:2904)
    at com.caucho.hessian.io.Hessian2Input$ReadInputStream.close(Hessian2Input.java:2927)
(0005786)
MicW   
05-28-12 23:50   
If i comment out is.close() and conn.close() in HessianProxy.invoke(), it works fine (but out course resources do not get closed).
So it's a bit tricky here how to close the stream and connection. In the fist case (0003655) the Method can only return one Stream. So the connection can simply be closed if this stream is closed. In the case of Objects containing streams, the situation is more complex because it's not easy to find out, when the stream can be closed. One way woulr be to keep track of all streams and if the last stream is closed, the connection can be closed as well.
Another problem is that the result Object's properties may not be available until the stream is fully read.