Re: [Cppcms-users] Advice on debugging file upload

[Artyom B. <art...@ya...>]

Two things.


1. This exception is thrown when you try to access a file (cppcms::widgets::file::value()) 

   and the file was not uploaded.

   You can check if the file was uploaded by using cppcms::widgets::file::set() member function
   before using value.

   See: http://cppcms.com/cppcms_ref/latest/classcppcms_1_1widgets_1_1file.html#a56ee053415b1bd98944bb3599e3392b1
2. To debug this problem you should be able to see full stack backtrace 
   in the log - and AFAIR it should work under Mac OS X, if not tell me.

   To check if backtrace works, please compile 


      booster/lib/backtrace/test/test_backtrace.cpp

   As g++ -O0 -dynamic booster/lib/backtrace/test/test_backtrace.cpp -lbooster

   And see if you get stack trace when you run the program.


Artyom Beilis
--------------

CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/



>________________________________
> From: doug livesey <bi...@gm...>
>To: cpp...@li... 
>Sent: Sunday, April 22, 2012 11:08 PM
>Subject: [Cppcms-users] Advice on debugging file upload
> 
>
>Hi -- I'm trying to develop an image server which raises the following error when I send a post request to create a new file:
>
>
>2012-04-22 20:55:28; cppcms, error: Caught exception [File was not loaded]
>0x10176c2b3: cppcms::cppcms_error::cppcms_error(std::string const&) + 0x63 in /usr/local/lib/libcppcms.1.dylib
> (http_context.cpp:139)
>
>
>Could anyone offer me any advice on good ways to start debugging to find the source of the error, here?
>Thanks,
>   Doug.
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