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From "Zeljko Vukovic (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-11672) Input stream infinitive loop
Date Tue, 15 Aug 2017 15:43:01 GMT
Zeljko Vukovic created CAMEL-11672:
--------------------------------------

             Summary: Input stream infinitive loop
                 Key: CAMEL-11672
                 URL: https://issues.apache.org/jira/browse/CAMEL-11672
             Project: Camel
          Issue Type: Bug
          Components: camel-http
    Affects Versions: 2.12.4
         Environment: IBM Websphere Liberty Core 17.0.0.1
IBM Websphere Liberty Core 17.0.0.2
            Reporter: Zeljko Vukovic
            Priority: Critical


Dear Camel team,
While working on one integration we found issue related to camel-http component when solution
is deployed on IBM Liberty core.
Same issue is not reproducible on Jetty and Tomcat.

Issue is connected to the code in IOHelper and CachedOutputStream$WrappedInputStream
We are using version 2.12.4 but I can see that same code is used also in latest versions.

https://github.com/apache/camel/blob/camel-2.12.4/camel-core/src/main/java/org/apache/camel/util/IOHelper.java

Problematic part are lines 196, 198 and 204.
Basically stream reader which is used org.apache.camel.converter.stream.CachedOutputStream$WrappedInputStream
is not returning -1 like response of read method if empty string is provided on input.
This is wrong by specification of InputReader interface.

       // in the case there is input which is empty string
       while ( -1 != n) {
         …
         int n = input.read(buffer);  ---> this is never -1 if string is empty "" already
0 and we have infinitive loop !!!
        }
 
For our use case we have applied change in IOHelper to check and directly cover if stream
reader produce same (non-valid) response to not produce infinitive loop.

If any questions around reproducing issue please let me know

Best regards,
Zeljko



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