cppcms-users — Disussions of users of CppCMS

Re: [Cppcms-users] (no subject)

[Marcel H. <ke...@co...>]

On 21.02.2014 07:58, eric middelkoop wrote:
> Hi Marcel,
> 
> Yes I checked. Javascript is enabled in Firefox. Do you have any idea
> what is going wrong here?

Are you sure your application is running und reachable?
Did you try the command I sent you?

> wget localhost:8080/ticker -qO - | cat

If that works the page should also work:

http://localhost:8080/the_ticker.html

if not. Try to update your cppcms version and after that I don't have
any clue :D

Greetings

Re: [Cppcms-users] (no subject)

[eric m. <mid...@gm...>]

Hi Marcel,

Yes I checked. Javascript is enabled in Firefox. Do you have any idea what
is going wrong here?

Greetings,
Eric


On Thu, Feb 20, 2014 at 11:29 PM, Marcel Hellwig <ke...@co...> wrote:

> > ###4.7.3
>
> should be good enough ;)
>
> > ###The other one that does compile but reacts like described underneath
> > I got from here
> > ###
> https://svn.code.sf.net/p/cppcms/code/framework/trunk/contrib/server_side/sse/
>
> that's the right one :)
>
> > ###Ok I understand this. But the page does contain the following:
> > <p>Price:<span id="price"></span></p> so I had expect it to show
> > something. If that's not doing it, how can I translate that stream into
> > a field that is updated and displayed on every change?
> Sorry, only used the stream itself. You're right. There is a frontend,
> namely the the_ticker.html which reacts like it should. In my browser
> (also firefox) the price is changing. Did you enabled javascript?!
>
> The thing you need is the javascript code in 'the_ticker.html' which
> opens a stream and put its content into the span field.
>
> If you have any further questions, feel free to mail them.
>
> Greetings
> Marcel
>
>


-- 
Groetjes,
Eric

http://www.lightandmagicphotography.nl
http://www.lightandmagicphotography.com

Re: [Cppcms-users] (no subject)

[Marcel H. <ke...@co...>]

> ###4.7.3

should be good enough ;)

> ###The other one that does compile but reacts like described underneath
> I got from here
> ###https://svn.code.sf.net/p/cppcms/code/framework/trunk/contrib/server_side/sse/

that's the right one :)

> ###Ok I understand this. But the page does contain the following:
> <p>Price:<span id="price"></span></p> so I had expect it to show
> something. If that's not doing it, how can I translate that stream into
> a field that is updated and displayed on every change?
Sorry, only used the stream itself. You're right. There is a frontend,
namely the the_ticker.html which reacts like it should. In my browser
(also firefox) the price is changing. Did you enabled javascript?!

The thing you need is the javascript code in 'the_ticker.html' which
opens a stream and put its content into the span field.

If you have any further questions, feel free to mail them.

Greetings
Marcel

Re: [Cppcms-users] (no subject)

[eric m. <mid...@gm...>]

Hi Marcel,

Thank you for your reaction. I have well over 25 years experience with
programming in c, c++,  c# and Ruby, but have virtually no experience with
web-development. I do understand the concepts but am struggling to get a
working comet-example to use.

See my comments underneath at the ### marks.

Hope you can help me out here.

Kind regards,
Eric






On Thu, Feb 20, 2014 at 1:12 PM, Marcel Hellwig <ke...@co...> wrote:

>
>
> On 20.02.2014 05:12, eric middelkoop wrote:
> > Hello,
> >
> > I am looking for a way to update parts of a webpage via events from the
> > server.
> >
> > I downloaded the Ticker example from the blog but as I try to compile it
> > (os = Ubuntu) I'm getting the following errors:
> which version of gcc do you using?
>
###4.7.3



 > g++  -std=c++0x -O2 -Wall -g ticker.cpp -o ticker -lcppcms -lbooster
> > ticker.cpp: In member function 'void
> > ticker::async_send(booster::shared_ptr<cppcms::http::context>)':
> > ticker.cpp:83:39: error: capture of non-variable 'ticker::counter_'
> > ticker.cpp:97:9: note: 'int ticker::counter_' declared here
> fun fact: ticker.cpp has only 76 lines :)
> Which version of the ticker are you using? The latest from svn trunk?
>
###The first one that gives the compiler error I got from here:
http://cppcms.com/files/ticker/
###The other one that does compile but reacts like described underneath I
got from here ###
https://svn.code.sf.net/p/cppcms/code/framework/trunk/contrib/server_side/sse/



 >
> > I also downloaded the Sse Ticker example from contrib and that does
> > compile but when I run it and access the page from firefox
> > (127.0.0.1:8080/ticker <http://127.0.0.1:8080/ticker>), I get a 404 Not
> > Found and a popup with the following information:
> hmm. I think you mess up things. 404 really means nothing, but firefox
> has a file which will be presented to you.
> >
> > -------------------------------------------------------
> > ticker
> > which is: text/event-stream
> > from: http://127.0.0.1:8080
> >
> > What should firefox do with this file?
> > - Open with Browse
> > - Save File
> > --------------------------------------------------------
> >
> > It doesn't display the tickers on the webpage.
> Yep, that's right, but that's what the ticker does. It does not have a
> page to display, but emits events the whole time to a stream. To view
> the content you can use this:
>
> > wget localhost:8080/ticker -qO - | cat
>
###Ok I understand this. But the page does contain the following:
<p>Price:<span id="price"></span></p> so I had expect it to show something.
If that's not doing it, how can I translate that stream into a field that
is updated and displayed on every change?





>
> >
> > I have a camera that is shooting photographs and want a webpage to
> > reflect what the camera is doing. So every time it shoots a photograph
> > the webserver should send the filename and sequencenumber of that
> > photograph to the webpage and the user must be able to inform the camera
> > to stop taking pictures via pressing a button.
> You need a webpage that does some magic javascript and a backend. That
> shouldn't be that hard.
> > So HTTP requests to
> > control the camera and asynchronous status-updates to be displayed on
> > the webpage.
> >
> > I hope someone can help me out by either getting one of the ticker
> > examples working or providing another working example.
>
> As I said. Everything works in the way that it should be. Maybe the chat
> example is more for you :)
> >
> > Many thanks!
> >
> > Eric
> >
> >
> Greetings
> Marcel
>
>
>
>
> ------------------------------------------------------------------------------
> Managing the Performance of Cloud-Based Applications
> Take advantage of what the Cloud has to offer - Avoid Common Pitfalls.
> Read the Whitepaper.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>


-- 
Groetjes,
Eric

http://www.lightandmagicphotography.nl
http://www.lightandmagicphotography.com

Re: [Cppcms-users] (no subject)

[Marcel H. <ke...@co...>]

On 20.02.2014 05:12, eric middelkoop wrote:
> Hello,
> 
> I am looking for a way to update parts of a webpage via events from the
> server.
> 
> I downloaded the Ticker example from the blog but as I try to compile it
> (os = Ubuntu) I'm getting the following errors:
which version of gcc do you using?
> g++  -std=c++0x -O2 -Wall -g ticker.cpp -o ticker -lcppcms -lbooster
> ticker.cpp: In member function ‘void
> ticker::async_send(booster::shared_ptr<cppcms::http::context>)’:
> ticker.cpp:83:39: error: capture of non-variable ‘ticker::counter_’
> ticker.cpp:97:9: note: ‘int ticker::counter_’ declared here
fun fact: ticker.cpp has only 76 lines :)
Which version of the ticker are you using? The latest from svn trunk?
> 
> I also downloaded the Sse Ticker example from contrib and that does
> compile but when I run it and access the page from firefox
> (127.0.0.1:8080/ticker <http://127.0.0.1:8080/ticker>), I get a 404 Not
> Found and a popup with the following information:
hmm. I think you mess up things. 404 really means nothing, but firefox
has a file which will be presented to you.
> 
> -------------------------------------------------------
> ticker
> which is: text/event-stream
> from: http://127.0.0.1:8080
> 
> What should firefox do with this file?
> - Open with Browse
> - Save File
> --------------------------------------------------------
> 
> It doesn't display the tickers on the webpage.
Yep, that's right, but that's what the ticker does. It does not have a
page to display, but emits events the whole time to a stream. To view
the content you can use this:

> wget localhost:8080/ticker -qO - | cat


> 
> I have a camera that is shooting photographs and want a webpage to
> reflect what the camera is doing. So every time it shoots a photograph
> the webserver should send the filename and sequencenumber of that
> photograph to the webpage and the user must be able to inform the camera
> to stop taking pictures via pressing a button. 
You need a webpage that does some magic javascript and a backend. That
shouldn't be that hard.
> So HTTP requests to
> control the camera and asynchronous status-updates to be displayed on
> the webpage.
> 
> I hope someone can help me out by either getting one of the ticker
> examples working or providing another working example.

As I said. Everything works in the way that it should be. Maybe the chat
example is more for you :)
> 
> Many thanks!
> 
> Eric
> 
> 
Greetings
Marcel

[Cppcms-users] (no subject)

[eric m. <mid...@gm...>]

Hello,

I am looking for a way to update parts of a webpage via events from the
server.

I downloaded the Ticker example from the blog but as I try to compile it
(os = Ubuntu) I'm getting the following errors:
g++  -std=c++0x -O2 -Wall -g ticker.cpp -o ticker -lcppcms -lbooster
ticker.cpp: In member function 'void
ticker::async_send(booster::shared_ptr<cppcms::http::context>)':
ticker.cpp:83:39: error: capture of non-variable 'ticker::counter_'
ticker.cpp:97:9: note: 'int ticker::counter_' declared here

I also downloaded the Sse Ticker example from contrib and that does compile
but when I run it and access the page from firefox (127.0.0.1:8080/ticker),
I get a 404 Not Found and a popup with the following information:

-------------------------------------------------------
ticker
which is: text/event-stream
from: http://127.0.0.1:8080

What should firefox do with this file?
- Open with Browse
- Save File
--------------------------------------------------------

It doesn't display the tickers on the webpage.

I have a camera that is shooting photographs and want a webpage to reflect
what the camera is doing. So every time it shoots a photograph the
webserver should send the filename and sequencenumber of that photograph to
the webpage and the user must be able to inform the camera to stop taking
pictures via pressing a button. So HTTP requests to control the camera and
asynchronous status-updates to be displayed on the webpage.

I hope someone can help me out by either getting one of the ticker examples
working or providing another working example.

Many thanks!

Eric


<http://www.lightandmagicphotography.com>

[Cppcms-users] How can I limit the total maximum number of synchronous application object in the pool at any given time...

[Jean-Frédéric G. <jfg...@gm...>]

Thanks a lot for creating CppCms, it is a wonderful framework.

I made a simple project, with a synchronous application pool (like
hello_world), and I was hoping I could create a DB connection inside each
application object and keep it cached for reusing.
Now, I am using the configuration service.applications_pool_size to set my
pool size, but it seems this configuration is only for the number the
maximum number of app object to cache, it does not limit the maximum number
of objects created at any time.

For instance, I have set the service.applications_pool_size to 24, and if I
run a load test and increase the number of concurrent requests, I am able
to go over 24 app objects. In fact I don't really see a limit easily, it
would go over 200 app objects living at any time (in my case this
translates to 200 DB connections), as long as I am hitting the service with
over 200 concurrent requests.

Even if I play with the worker_thread config it does not seem to limit in
any way the max number of app objects.

Once I stop my load test, I will see the number of app objects/db
connections go back to the service.applications_pool_size I have configured.

Is there any way to really limit the app pool size so that it will only go
up to a maximum setting configured?
Under heavy load, once this limit is reached, it should queue the requests
and dispatch them at the next available application object.

Also, I am using nginx with my cppcms app configured as fastcgi. I tried to
see if I could limit the concurrent requests in nginx to queue them but
could not find how or if this is possible.

Overall, I find that being able to control the maximum number of app
objects is important, in order to properly manage the memory and CPU
resources used under heavy load.

Also, please let me know if I'm missing something, I am just starting with
cppcms but I find great potential.

Thanks,
Jeff

Re: [Cppcms-users] Build error "Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o"

[Kostya S. <ksa...@gm...>]

Thanks a lot for response.
I've updated gcc and now the issue is fixed.


2014-02-04 Artyom Beilis <art...@ya...>:

> Hi,
>
> It is really strange
>
> Can you give the FULL output of the build?
> Also there are ready to go deb packages for ubuntu
>
>
> Artyom Beilis
> --------------
> CppCMS - C++ Web Framework:   http://cppcms.com/
> CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
>
> --------------------------------------------
> On Tue, 2/4/14, Kostya Samarin <ksa...@gm...> wrote:
>
>  Subject: [Cppcms-users] Build error "Building CXX object
> CMakeFiles/tc_skin.dir/tc_skin.cpp.o"
>  To: cpp...@li...
>  Date: Tuesday, February 4, 2014, 12:41 PM
>
>  Hello.
>
>  Could somebody help me with this:
>  I'm trying to build cppcmc 1.0.4
>  according to build instructions I do
>  "cmake .." result is success
>
>  "make" output is following
>  ....
>  [ 65%] Built target session_interface_test
>  [ 66%] Built target skin3
>  [ 66%] Built target status_test
>  [ 67%] Built target storage_test
>  [ 67%] Building CXX object
>  CMakeFiles/tc_skin.dir/tc_skin.cpp.o
>
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl: In member function
>  'virtual void
>  tc_skin::foreach_tmpl::auto_test()':
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:9: error:
>  'automatic_type_identification_is_not_supported_by_this_compiler'
>  was not declared in this scope
>
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:51: error:
>  expected ';' before 'x_ptr'
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:119: error:
>  'x_ptr' was not declared in this scope
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:126: error:
>  'x_ptr_end' was not declared in this scope
>
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:28: error:
>  'x' was not declared in this scope
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:9: error:
>  'automatic_type_identification_is_not_supported_by_this_compiler'
>  was not declared in this scope
>
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:52: error:
>  expected ';' before 'x_ptr'
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:122: error:
>  'x_ptr' was not declared in this scope
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:129: error:
>  'x_ptr_end' was not declared in this scope
>
>  /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:28: error:
>  'x' was not declared in this scope
>  make[2]: *** [CMakeFiles/tc_skin.dir/tc_skin.cpp.o] Error 1
>  make[1]: *** [CMakeFiles/tc_skin.dir/all] Error 2
>  make: *** [all] Error 2
>
>
>  gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
>
>  Do I miss something?
>
>  --
>
>  Thanks, Kostya.
>
>
>  -----Inline Attachment Follows-----
>
>
>  ------------------------------------------------------------------------------
>  Managing the Performance of Cloud-Based Applications
>  Take advantage of what the Cloud has to offer - Avoid Common
>  Pitfalls.
>  Read the Whitepaper.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk
>  -----Inline Attachment Follows-----
>
>  _______________________________________________
>  Cppcms-users mailing list
>  Cpp...@li...
>  https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>
> ------------------------------------------------------------------------------
> Managing the Performance of Cloud-Based Applications
> Take advantage of what the Cloud has to offer - Avoid Common Pitfalls.
> Read the Whitepaper.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>



-- 

Thanks, Kostya.

Re: [Cppcms-users] Build error "Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o"

[Kostya S. <ksa...@gm...>]

Thanks a lot.
The issue is fixed/


2014-02-04 Marcel Hellwig <ke...@co...>:

> > /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:9: error:
> > 'automatic_type_identification_is_not_supported_by_this_compiler' was
> > not declared in this scopeorge.net
> > https://lists.sourceforge.net/lists/listinfo/cppcms-users
> >
>
> your compiler does not support decltype or similar.
>
> > gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
>
> you should update your gcc version!!!
>
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------------
> Managing the Performance of Cloud-Based Applications
> Take advantage of what the Cloud has to offer - Avoid Common Pitfalls.
> Read the Whitepaper.
>
> http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>


-- 

Thanks, Kostya.

Re: [Cppcms-users] Build error "Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o"

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

Hi,

It is really strange 

Can you give the FULL output of the build?
Also there are ready to go deb packages for ubuntu


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

--------------------------------------------
On Tue, 2/4/14, Kostya Samarin <ksa...@gm...> wrote:

 Subject: [Cppcms-users] Build error "Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o"
 To: cpp...@li...
 Date: Tuesday, February 4, 2014, 12:41 PM
 
 Hello.
 
 Could somebody help me with this:
 I'm trying to build cppcmc 1.0.4 
 according to build instructions I do
 "cmake .." result is success
 
 "make" output is following 
 ....
 [ 65%] Built target session_interface_test
 [ 66%] Built target skin3
 [ 66%] Built target status_test
 [ 67%] Built target storage_test
 [ 67%] Building CXX object
 CMakeFiles/tc_skin.dir/tc_skin.cpp.o
 
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl: In member function
 ‘virtual void
 tc_skin::foreach_tmpl::auto_test()’:
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:9: error:
 ‘automatic_type_identification_is_not_supported_by_this_compiler’
 was not declared in this scope
 
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:51: error:
 expected ‘;’ before ‘x_ptr’
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:119: error:
 ‘x_ptr’ was not declared in this scope
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:126: error:
 ‘x_ptr_end’ was not declared in this scope
 
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:28: error:
 ‘x’ was not declared in this scope
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:9: error:
 ‘automatic_type_identification_is_not_supported_by_this_compiler’
 was not declared in this scope
 
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:52: error:
 expected ‘;’ before ‘x_ptr’
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:122: error:
 ‘x_ptr’ was not declared in this scope
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:129: error:
 ‘x_ptr_end’ was not declared in this scope
 
 /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:28: error:
 ‘x’ was not declared in this scope
 make[2]: *** [CMakeFiles/tc_skin.dir/tc_skin.cpp.o] Error 1
 make[1]: *** [CMakeFiles/tc_skin.dir/all] Error 2
 make: *** [all] Error 2
 
 
 gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) 
 
 Do I miss something?
 
 -- 
 
 Thanks, Kostya.
 
 
 -----Inline Attachment Follows-----
 
 ------------------------------------------------------------------------------
 Managing the Performance of Cloud-Based Applications
 Take advantage of what the Cloud has to offer - Avoid Common
 Pitfalls.
 Read the Whitepaper.
 http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk
 -----Inline Attachment Follows-----
 
 _______________________________________________
 Cppcms-users mailing list
 Cpp...@li...
 https://lists.sourceforge.net/lists/listinfo/cppcms-users
 

Re: [Cppcms-users] Build error "Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o"

[Marcel H. <ke...@co...>]

> /home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:9: error:
> ‘automatic_type_identification_is_not_supported_by_this_compiler’ was
> not declared in this scopeorge.net
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
> 

your compiler does not support decltype or similar.

> gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

you should update your gcc version!!!

[Cppcms-users] Build error "Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o"

[Kostya S. <ksa...@gm...>]

Hello.

Could somebody help me with this:
I'm trying to build cppcmc 1.0.4
according to build instructions I do
"cmake .." result is success
"make" output is following
....
[ 65%] Built target session_interface_test
[ 66%] Built target skin3
[ 66%] Built target status_test
[ 67%] Built target storage_test
[ 67%] Building CXX object CMakeFiles/tc_skin.dir/tc_skin.cpp.o
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl: In member function 'virtual void
tc_skin::foreach_tmpl::auto_test()':
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:9: error:
'automatic_type_identification_is_not_supported_by_this_compiler' was not
declared in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:51: error: expected ';' before
'x_ptr'
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:119: error: 'x_ptr' was not
declared in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:126: error: 'x_ptr_end' was not
declared in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:34:28: error: 'x' was not declared
in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:9: error:
'automatic_type_identification_is_not_supported_by_this_compiler' was not
declared in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:52: error: expected ';' before
'x_ptr'
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:122: error: 'x_ptr' was not
declared in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:129: error: 'x_ptr_end' was not
declared in this scope
/home/ks/cppcms-1.0.4/tests/tc_skin.tmpl:35:28: error: 'x' was not declared
in this scope
make[2]: *** [CMakeFiles/tc_skin.dir/tc_skin.cpp.o] Error 1
make[1]: *** [CMakeFiles/tc_skin.dir/all] Error 2
make: *** [all] Error 2

gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

Do I miss something?

-- 

Thanks, Kostya.

[Cppcms-users] bolting on libopenssl

[Ross R. <ros...@gm...>]

I'd like to bolt on libopenssl to the front of cppcms. Can anyone give me
pointers on where in the cppcms code base I should install this shim?

 - Ross

Re: [Cppcms-users] Whats the current state of development

[Christian G. <chr...@gm...>]

Hi Artyom,


2014/1/10 Artyom Beilis <art...@ya...>:
> Active...
>

That is nice to hear.

> Yes, you don't see commits but it does not mean by any means that the project is
> stalled.
>
> However most of my work is concentrated currently on the CppCMS
> based project for a customer - some very complex CppCMS based system
> with absolutely outstanding loads running in production already for quite a significant
> period of time. I'm planning to publish some info about it in the blog.
>

I think that this is a quite good idea to write something about
real-life projects using
CppCMS. Also it communicates that there is something going on with CppCMS and
that the project is still alive.

> What happens that most of my effort is concentrated on actually "Using" CppCMS
> for a _paying_ customer - which obviously has higher priorities.
>

I totally understand this... somehow it must be possible to pay the bills :)

> Now I need to get back to beta version of CppCMS 1.2.0 soon - can't tell exactly
> how much time but I'm going to spend some of my time on the progress of
> the system.
>
> I really want to get multiple event loops support to 1.2.0 before the release.
>

That is fine, but I think the most common problem in the open source
world is put too many
new (badly tested) features into a release. It is always a bad
practice to post-prone a
new release because feature X is still on the TODO and feature Y is
only done 80%.

Release early, release often!

> Hopefully it answers the question.
>

Yes it does... thanks a lot!

greets
--
Christian Gmeiner, MSc

Re: [Cppcms-users] Whats the current state of development

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

Active...

Yes, you don't see commits but it does not mean by any means that the project is
stalled.

However most of my work is concentrated currently on the CppCMS
based project for a customer - some very complex CppCMS based system
with absolutely outstanding loads running in production already for quite a significant
period of time. I'm planning to publish some info about it in the blog.

What happens that most of my effort is concentrated on actually "Using" CppCMS
for a _paying_ customer - which obviously has higher priorities.

Now I need to get back to beta version of CppCMS 1.2.0 soon - can't tell exactly
how much time but I'm going to spend some of my time on the progress of 
the system.

I really want to get multiple event loops support to 1.2.0 before the release.

Hopefully it answers the question.

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

--------------------------------------------
On Fri, 1/10/14, Christian Gmeiner <chr...@gm...> wrote:

 Subject: [Cppcms-users] Whats the current state of development
 To: cpp...@li...
 Date: Friday, January 10, 2014, 3:27 PM
 
 Hi all...
 
 it looks like it got quite silent around the development of
 cppcms.
 Are there any news,
 release plans etc?
 
 greets
 --
 Christian Gmeiner, MSc
 
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[Cppcms-users] Whats the current state of development

[Christian G. <chr...@gm...>]

Hi all...

it looks like it got quite silent around the development of cppcms.
Are there any news,
release plans etc?

greets
--
Christian Gmeiner, MSc

[Cppcms-users] Documentation issue

[Ross R. <ros...@gm...>]

I'm going through the documentation on this page:
http://cppcms.com/wikipp/en/page/cppcms_1x

Can I suggest that next topic and previous topic links be added to the
documentation like you see in the bottom right on this library's
documentation?
http://cpp-netlib.org/0.10.1/whats_new.html

If next/prev were added, it would make it much easier to go through all the
documentation.

 - Ross

Re: [Cppcms-users] Threads in async apps disappear if program is daemonized

[CN <cn...@fa...>]

Here are the shell file and cppcms configuration file that can work with
the testing program.

Regards,
CN
----------------------------
#!/bin/sh
if [ -f /tmp/strange.pid ]
then
	kill `cat /tmp/strange.pid`
fi
rm -rf /tmp/strange.pid /tmp/strange.sock
./a.out -c config.js
chmod go+w /tmp/strange.sock

----------------------------
{
	"service" : {
		"api" : "fastcgi",
		"socket" : "/tmp/strange.sock"
	},
	"daemon":{
		"enable":true,
		//"enable":false,
		"lock":"/tmp/strange.pid"
	},
	"logging" : {
		"level" : "debug",
		"stderr" : false,
		"file" : {
			"name" : "/tmp/strange.log",
			"append" : true
		}
	}
}

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Re: [Cppcms-users] Threads in async apps disappear if program is daemonized

[CN <cn...@fa...>]

The compilable code can also be found at

http://pastie.org/8565179

Please switch "daemon" on and off in config.js and run tests:

"daemon":{
	"enable":true,
	//"enable":false,
}

and comment/uncomment the following to sets of statements to see
different results:

set (1):
booster::intrusive_ptr<async_app> async_app_=new async_app(s);
s.applications_pool().mount(async_app_,cppcms::mount_point("^/async_app/(.+)",1));

set (2):
s.applications_pool().mount(new
async_app(s),cppcms::mount_point("^/async_app/(.+)",1));

Regards,
CN

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[Cppcms-users] Threads in async apps disappear if program is daemonized

[CN <cn...@fa...>]

I seem to be hitting the problem as pointed out here:
http://www.linuxprogrammingblog.com/threads-and-fork-think-twice-before-using-them

The strange effects happen to asynchronous application and the program
is configured to be daemonized. config.js:

"daemon":{
	"enable":true
}

According to log, threads launched by asynchronous applications seem to
simply disappear when the program is being daemonized.

Further, the following two sets of code yield different behaviors. You
may comment out either one and run this program to see the different
log:

Code set (a)
	cppcms::service s(argc,argv);
	booster::intrusive_ptr<async_app> async_app_=new async_app(s);
	s.applications_pool().mount(async_app_,cppcms::mount_point("^/async_app/(.+)",1));
	s.run();

Code set (b)
	cppcms::service s(argc,argv);
	s.applications_pool().mount(new
	async_app(s),cppcms::mount_point("^/async_app/(.+)",1));
	s.run();

Note: I use boost::thread instead of booster::thread (which does not
support interrupt()), and call

boost::thread::interrupt();
boost::thread_pointer::join();

in destructor in order to ensure all threads gracefully exit after the
program is killed with signal SIGTERM.

Comments will be appreciated!

Regards,
CN

//==============================
#include <iostream>
#include <cstring>
#include <cppcms/service.h>
#include <cppcms/applications_pool.h>
#include <cppcms/mount_point.h>
#include <cppcms/rpc_json.h>
#include <boost/thread/thread.hpp>
#include <booster/log.h>
#include <signal.h> //sigaction, signal()
//------------------------------
static bool got_signal=false;
void signal_handler(int signal_number)
{
	std::cerr << "signal caught. signal number=" << signal_number <<
	std::endl;
	got_signal=true;
}
//------------------------------
class class_poll
{
public:
	~class_poll(){
		BOOSTER_DEBUG("class_poll destructor");
	}
	void poll(){
		//boost::this_thread::disable_interruption di;
		while(true){
			BOOSTER_DEBUG("before sleep");
			try{
				//See comments in main()!
				boost::this_thread::sleep(boost::posix_time::seconds(3));
				//inturruption point
				//sleep(3);
			}
			catch(boost::thread_interrupted const& ){
				BOOSTER_DEBUG("boost::thread_interrupted
				is caught");
				break;
			}
			BOOSTER_DEBUG("after sleep");
		}
	}
};
//------------------------------
class async_app : public cppcms::rpc::json_rpc_server
{
private:
		boost::shared_ptr<boost::thread> poll_thread_pointer;
public:
	async_app(cppcms::service &s) : cppcms::rpc::json_rpc_server(s){
		boost::shared_ptr<class_poll> p(new class_poll());
		poll_thread_pointer.reset(new
		boost::thread(boost::bind(&class_poll::poll,p)));
	}
	~async_app(){
		BOOSTER_DEBUG("async_app destructor");
		try{
			poll_thread_pointer->interrupt();
			poll_thread_pointer->join();
		}
		catch(...){}
	}
};
//------------------------------
int main(int argc,char ** argv)
{
	struct sigaction actions;
	memset(&actions,0,sizeof(actions));
	sigemptyset(&actions.sa_mask);
	actions.sa_flags=0;
	actions.sa_handler=signal_handler;
	int sig_result;
	if((sig_result=sigaction(SIGINT,&actions,NULL)) != 0){
		std::cerr << "sigaction(SIGINT) failed: " << sig_result
		<< std::endl;
		std::terminate();
	}
	if((sig_result=sigaction(SIGTERM,&actions,NULL)) != 0){
		std::cerr << "sigaction(SIGTERM) failed: " << sig_result
		<< std::endl;
		std::terminate();
	}
	if((sig_result=sigaction(SIGHUP,&actions,NULL)) != 0){
		std::cerr << "sigaction(SIGHUP) failed: " << sig_result
		<< std::endl;
		std::terminate();
	}
	try{
		cppcms::service s(argc,argv);
		 //(1)The following two statements work with both C
		 sleep() and boost::this_thread::sleep() running in
		 another thread if NOT daemonized.
		 //(2)The following two statements does NOT work with C
		 sleep() or boost::this_thread::sleep() running in
		 another thread if daemonized.
		booster::intrusive_ptr<async_app> async_app_=new
		async_app(s);
		s.applications_pool().mount(async_app_,cppcms::mount_point("^/async_app/(.+)",1));

		//(3)Next statement works with C sleep() running in
		another thread irrespective of being daemonized or not.
		//(4)Next statement does NOT work with
		boost::thread::sleep() regardless of being daemonized or
		not.
		//s.applications_pool().mount(new
		async_app(s),cppcms::mount_point("^/async_app/(.+)",1));
		s.run();
		//Next statement never gets executed when killed! Why?
		std::cerr <<"after cppcms::service::run()";
	}
	catch(std::exception const &e) {
		std::cerr<<e.what()<<std::endl;
	}
	return 0;
}
//==============================

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Re: [Cppcms-users] Why can't we use pointers in templates?

[Lee E. <le...@el...>]

you can use pointers if you typedef them in a header file before.
with regard to most std::* types, they usually manage their memory
internally and are not a peoblem passing by value, string behaves like
that.
 בתאריך 10 בדצמ 2013 04:18, מאת "augustin" <aug...@ov...>:

> Hello,
>
> cppcms_tmpl_cc does not allow us to use pointers within templates: the
> template regex does not validate.
>
> For example, if I use something like this:
>
> <%= content.getPerson(r.id)->usFirst %>
>
> I get the compile error:
> Error: Syntax error in command Inline Variable ...
>
> Is it considered good practice to load all strings into the
> cppcms::base_content struct and not to rely on pointers to object that are
> stored permanently into memory (stored in memory over many http requests
> thanks to fast_cgi)?
> As far as I can tell, it's the only practice available.
>
> thanks,
>
> augustin.
>
>
>
> ------------------------------------------------------------------------------
> Sponsored by Intel(R) XDK
> Develop, test and display web and hybrid apps with a single code base.
> Download it for free now!
>
> http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>

[Cppcms-users] cppdb::session connection pool makes asynchronous apps unstable

[CN <cn...@fa...>]

This program mounts both synchronous and asynchronous applications. Both
applications use cppdb::session. If the asynchronous application's
constructor includes connection pool (@pool_size=10) in cppdb::session
constructor's parameter, this program silently terminates immediately
after browser sends requests.

The deepest spot of the source I can trace trying to locate the problem
is exec() at line 465 in ~/booster/lib/aio/src/io_service.cpp:

			try {
				
				exec();
			}
			catch(...) {
				data_mutex_.lock();
				throw;
			}

I guess exec() must have thrown an uncaught exception and leads to
program termination.

What I have no clue is why singleton cppdb::session can make the system
unstable. If "@pool_size=10" is not included in cppdb::session's
constructor parameter, then the program seems to run properly.

This weird behavior happens only to asynchronous applications.

Any enlightenment will be much appreciated!

---This file should be able to compile and run:---
#include <cppcms/service.h>
#include <cppcms/rpc_json.h>
#include <cppdb/frontend.h>
#include <cppcms/applications_pool.h>
#include <cppcms/mount_point.h>
#include <cppcms/url_dispatcher.h>
#include <cppcms/url_mapper.h>
#include <cppcms/http_context.h>
#include <cppcms/session_interface.h>
#include <cppcms/service.h>
#include <cppcms/http_request.h>
#include <cppcms/http_response.h>
#include <fstream>
class sync : public cppcms::application
{
public:
	sync(cppcms::service &s) : cppcms::application(s){
		cppdb::session
		sess("postgresql:@pool_size=10;dbname=mydb;user=myname;password=mypassword");
		sess << "SET TIME ZONE 'UTC'" << cppdb::exec;
		dispatcher().assign(".*",&sync::show,this);
	}
private:
	void show(){
		std::ifstream myfile("/tmp/t.html");
		if(myfile.is_open()){
			std::string line;
			while(std::getline(myfile,line))
				response().out() << line;
			myfile.close();
		}
	}
};

class as : public cppcms::rpc::json_rpc_server
{
public:
	as(cppcms::service &s) : cppcms::rpc::json_rpc_server(s){
		//Next statement causes the program to terminate
		silently immediately after reqested:
		cppdb::session
		sess("postgresql:@pool_size=10;dbname=mydb;user=myname;password=mypassword");
		//Next statement does not cause problem:
		//cppdb::session
		sess("postgresql:dbname=mydb;user=myname;password=mypassword");
	} 
};

int main(int argc,char ** argv)
{
	cppcms::service s(argc,argv);
	s.applications_pool().mount(cppcms::applications_factory<sync>(),cppcms::mount_point("^/(?!as)(.*)",1));
	s.applications_pool().mount(new
	as(s),cppcms::mount_point("^/as/(.+)",1));
	s.run();
	return 0;
}

---file "/tmp/t.html":---
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
	<title>My Title</title>
	<meta http-equiv="Content-Type" content="text/html;
	charset=utf-8" />
	<script type="text/javascript" src="json2.js"></script>
	<script type="text/javascript" src="jsonrpc.js"></script>
	<script type="text/javascript">
		rpc=new JsonRPC('/as',['any'],[]);
		rpc.any.on_result=function(r){ alert('ok'); }
		rpc.any.on_error=function(e){ alert('oops'); }
	</script>
</head>
<body>
my test.
</body>
</html>
---end of files---
Regards,
CN

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Re: [Cppcms-users] How to format readable date from unix timestamp within template?

[sergey l. <ccp...@gm...>]

Hello friends!

There are some references about locale in stream in documentation.

http://cppcms.com/cppcms_ref/latest/classcppcms_1_1application.html#a3a1342b4834c8cdb79c2619dff010319

Render a template template_name of a skin skin using content content to an
output stream out. Note: You are responsible to imbue suitable locale to
the stream.


On Tue, Dec 10, 2013 at 5:54 AM, augustin <aug...@ov...>wrote:

> On Monday, December 09, 2013 02:24:42 PM Artyom Beilis wrote:
> > The problem with this clode
> >
> >  std::ostringstream buf;
> >  app()->render(std::string("my_skin"), std::string("book_page"), buf, c);
> >  cp->rContent = buf.str();
> >
> > is that buf does not have a locale object associated with it.
> >
> > You need to add following line
> >
> > buf.imbue(app()->context().locale());
> >
> > i.e.
> >
> >  std::ostringstream buf;
> >  buf.imbue(app()->context().locale());
> >  app()->render(std::string("my_skin"), std::string("book_page"), buf, c);
> >  cp->rContent = buf.str();
> >
> > The response().out() - the default output already has a locale embedded
> in
> > it. when you create a generic std::ostream you need to imbue application
> > specific locale (even if it is default system locale) to make various
> > localization related tools to work.
>
> That's it!
> Thanks a lot.
>
> Do you think it would be useful for me to add something about this in the
> wiki?
> If you wish, I can create a page in an appropriate place to document such
> newbie gotchas.
>
>
> augustin.
>
>
>
>
> .
>
>
> ------------------------------------------------------------------------------
> Sponsored by Intel(R) XDK
> Develop, test and display web and hybrid apps with a single code base.
> Download it for free now!
>
> http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>

[Cppcms-users] Why can't we use pointers in templates?

[augustin <aug...@ov...>]

Hello,

cppcms_tmpl_cc does not allow us to use pointers within templates: the 
template regex does not validate.

For example, if I use something like this:

<%= content.getPerson(r.id)->usFirst %>

I get the compile error:
Error: Syntax error in command Inline Variable ...

Is it considered good practice to load all strings into the 
cppcms::base_content struct and not to rely on pointers to object that are 
stored permanently into memory (stored in memory over many http requests 
thanks to fast_cgi)?
As far as I can tell, it's the only practice available.

thanks,

augustin.

Re: [Cppcms-users] Can't catch signals after service::run()

[CN <cn...@fa...>]

Hmm... Below simple example shows that statements following run() never
get executed once the program is killed:

#include <iostream>
#include <cstring>
#include <cppcms/service.h>
#include <cppcms/thread_pool.h>
int main(int argc,char ** argv)
{
	cppcms::thread_pool pool(3);
	//pool.post(...); //Launch long running threads.
	cppcms::service s(argc,argv);
	s.run();
	//Program counter never reaches here.
	std::cerr<<"after run()"<<std::endl;
	pool.stop(); //Wait until all threads complete.
	return 0;
}

Can incorrect configuration content in config.js cause programs to
malfunction?

Best regards,
CN

On Tue, Dec 10, 2013, at 12:08 AM, Artyom Beilis wrote:
> By default, when the SIGTERM is sent to the application, the
> cppcms::run() exits and you can perform any cleanup you need.
> 
> No need to do anything special.
> 
> The situation described in wiki is for reloading (i.e. restarting the
> service rather than exiting the full program)
> 
> Artyom Beilis

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