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Ravi,
On 6/4/15 10:44 PM, Ravi Kiran wrote:
> All the parameters are lost when this issue occurs.
>
> Code in the filter:
>
> Map<String, String[]> paramMap = httpRequest.getParameterMap();
> StringBuilder sb = new StringBuilder(); if(paramMap != null) {
> sb.append(System.lineSeparator()); sb.append("Request URI:
> ").append(httpRequest.getRequestURI()); Enumeration<String>
> headerNames = httpRequest.getHeaderNames();
> while(headerNames.hasMoreElements()){ String header =
> headerNames.nextElement(); sb.append("Request Header Name:
> ").append(header); sb.append(", Request Header Value:
> ").append(httpRequest.getHeader(header));
> sb.append(System.lineSeparator()); }
> sb.append(System.lineSeparator()); for(Map.Entry<String, String[]>
> paramEntry : paramMap.entrySet()) { sb.append("Param Name:
> ").append(paramEntry.getKey()); sb.append(", Param Values:
> ").append(paramEntry.getValue() != null ?
> Arrays.asList(paramEntry.getValue()) : null);
> sb.append(System.lineSeparator()); } } LOG.debug("Dumping request
> parameters: {}", sb.toString());
That looks fairly straightforward to me.
Is the servlet expecting to consume the request entity directly (e.g.
a multi-part request, etc.)?
Also, you didn't say whether all of the parameters have been "lost" or
only some.
To markt's point: are you storing any request-related objects
anywhere, such as a filter's or servlet's members, or in the user's
HttpSession, or even in the request attributes, etc.?
- -chris
> On Thu, Jun 4, 2015 at 9:54 AM, Christopher Schultz <
> ch...@christopherschultz.net> wrote:
>
> Ravi,
>
> On 6/4/15 11:40 AM, Ravi Kiran wrote:
>>>> Hi,
>>>>
>>>> I am writing to get some pointers on a strange issue which
>>>> are facing in tomcat in one of our client environments.
>>>>
>>>> Setup: 4 Webservers connecting to 2 tomcat using mod_jk
>>>> (load balanced)
>>>>
>>>> Issue: Request parameters GET/POST are coming as null to the
>>>> application intermittently i.e, filter in web app dumps the
>>>> request parameters and finds everything empty. TCP dumps are
>>>> inspected and packets are reaching tomcat even during the
>>>> failure cases. Parameters are available in tcpdump but lost
>>>> in between before it reaches application. This happens only
>>>> on one specific client environment which makes it even
>>>> difficult to isolate the problem.
>>>>
>>>> Tomcat Version: 7.0.54
>>>>
>>>> Please suggest some pointers to debug and resolve this issue.
>>>> I can provide more info if needed.
>
> Can we see the code for your Filter?
>
> Do all of the parameters appear to disappear, or only some of
> them?
>
> -chris
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