cppcms-users — Disussions of users of CppCMS

Re: [Cppcms-users] foreach

[Sergey <dan...@gm...>]

Solution is: <%= s->key() %> 

[Cppcms-users] foreach

[Sergey <dan...@gm...>]

data/
std::vector<some_class *> some;

apps/
data::some_content c;
c.success.push_back(&some);

tmpl/
<% foreach s in some %>
<% item %><%= s.key() %><% end %>
<% end %>


Of course i need like that <%= s[i].key() %>
Anyway it does not work

Anybody have solution?

Re: [Cppcms-users] In json.cpp and json.h I did not seethedeclareof the parse_stream function but you use it onjson.cpp in 1051line.why /?

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

> I do not understand the exact scope of the anonymous namespace.
> the anonymous namespace in json namespace,the json namespace in cppcms namespace .
> ...
> can you explain that why in 
json namespace can invoke the
> method in a the anonymous namespace that 
define in json namespace?

Read: http://stackoverflow.com/questions/154469/unnamed-anonymous-namespaces-vs-static-functions 

> is the parse_stream just belong json.cpp   ? 

Exactly.

Artyom

Re: [Cppcms-users] In json.cpp and json.h I did not seethedeclareof the parse_stream function but you use it onjson.cpp in 1051line.why /?

[4. <440...@qq...>]

I do not understand the exact scope of the anonymous namespace . the anonymous namespace in json namespace,the json namespace in cppcms namespace .
bool value::load(std::istream &in,bool full,int *line_number)
{
		int err_line;
		value v;
		if(!parse_stream(in,*this,full,err_line)) {
			if(line_number)
				*line_number=err_line;
			return false;
		}
		return true;


}  in json namespace


can you explain that why in json namespace can invoke the method in a the anonymous namespace that define in json namespace  ? is the parse_stream just belong json.cpp   ? 


 
 
 
------------------ Original ------------------
From:  "Marcel Hellwig"<ke...@co...>;
Date:  Wed, Dec 28, 2011 08:05 PM
To:  "cppcms-users"<cpp...@li...>; 

Subject:  Re: [Cppcms-users] In json.cpp and json.h I did not seethedeclareof the parse_stream function but you use it onjson.cpp in 1051line.why /?

 
                   Why don't you crawl through the sourcecode?
     
     Line 41 + 42 namespace cppcms {
     namespace json {
     
     Line 559 namespace { (anonymous namespace
     
     If you go through the json.h you see, that there isn't any method     parse_stream, that means it is a function in a way that is only     declared in the anonymous namespace from line 559 to 1046 and not a     class method.
     
     Am 28.12.2011 12:54, schrieb 44073786:            I do not know whether my idea is right ? is the  bool         parse_stream(std::istream &in,value &out,bool         force_eof,int &error_at_line) in the default global scope?
                   
            
                        ------------------ Original ------------------
                            From:  "44073786"<440...@qq...>;
               Date:  Wed, Dec 28, 2011 07:52 PM
               To:  "cppcms-users"<cpp...@li...>;                 
               Subject:  Re: [Cppcms-users] In json.cpp and                 json.h I did not see thedeclareof the parse_stream                 function but you use it onjson.cpp in 1051 line.why /?
             
              
             I konw it in 836,but I think it should  bool               value::parse_stream(std::istream &in,value               &out,bool force_eof,int &error_at_line),but not                bool parse_stream(std::istream &in,value               &out,bool force_eof,int &error_at_line) ? I don               not now why.? 
                             
                
                                ------------------                   Original ------------------
                                    From:  "Marcel                     Hellwig"<ke...@co...>;
                   Date:  Wed, Dec 28, 2011 07:44 PM
                   To:  "cppcms-users"<cpp...@li...>;                     
                   Subject:  Re: [Cppcms-users] In json.cpp                     and json.h I did not see the declareof the                     parse_stream function but you use it on json.cpp in                     1051 line.why /?
                 
                  
                 grep -Hirn "parse_stream" cppcms/src
                 cppcms/src/json.cpp:836:        bool                 parse_stream(std::istream &in,value &out,bool                 force_eof,int &error_at_line)
                 cppcms/src/json.cpp:1051:                       if(!parse_stream(in,*this,full,err_line)) {
                 cppcms/src/json.cpp:1063:                       if(!parse_stream(in,v,false,line_no))
                 
                 as you can see it's a method declared in line 836.
                 Did you use Strg+F?
                 
                 
                 Am 28.12.2011 12:21, schrieb 44073786:                                    Hello:
                   when I read the source code. In json.cpp and                     json.h I did not see the declare of the parse_stream                     function  but you use it on json.cpp in 1051                     line.why /?
                    I don not know why? please help me .thank you                     very much!
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                                                                                                                       
                                                                                                                                                                                                        
                   
                                      
                   ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create  new or port existing apps to sell to consumers worldwide. Explore the  Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev                   
                                      
                   _______________________________________________ Cppcms-users mailing list Cpp...@li... https://lists.sourceforge.net/lists/listinfo/cppcms-users                                 
             
           
         
       
              
       ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create  new or port existing apps to sell to consumers worldwide. Explore the  Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev       
              
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Re: [Cppcms-users] In json.cpp and json.h I did not see thedeclareof the parse_stream function but you use it onjson.cpp in 1051 line.why /?

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

Why don't you crawl through the sourcecode?

Line 41 + 42 namespace cppcms {
namespace json {

Line 559 namespace { (anonymous namespace

If you go through the json.h you see, that there isn't any method 
parse_stream, that means it is a function in a way that is only declared 
in the anonymous namespace from line 559 to 1046 and not a class method.

Am 28.12.2011 12:54, schrieb 44073786:
> I do not know whether my idea is right ? is the  bool 
> parse_stream(std::istream &in,value &out,bool force_eof,int 
> &error_at_line) in the default global scope?
> ------------------ Original ------------------
> *From: * "44073786"<440...@qq...>;
> *Date: * Wed, Dec 28, 2011 07:52 PM
> *To: * "cppcms-users"<cpp...@li...>;
> *Subject: * Re: [Cppcms-users] In json.cpp and json.h I did not see 
> thedeclareof the parse_stream function but you use it onjson.cpp in 
> 1051 line.why /?
> I konw it in 836,but I think it should  bool 
> value::parse_stream(std::istream &in,value &out,bool force_eof,int 
> &error_at_line),but not  bool parse_stream(std::istream &in,value 
> &out,bool force_eof,int &error_at_line) ? I don not now why.?
> ------------------ Original ------------------
> *From: * "Marcel Hellwig"<ke...@co...>;
> *Date: * Wed, Dec 28, 2011 07:44 PM
> *To: * "cppcms-users"<cpp...@li...>;
> *Subject: * Re: [Cppcms-users] In json.cpp and json.h I did not see 
> the declareof the parse_stream function but you use it on json.cpp in 
> 1051 line.why /?
> grep -Hirn "parse_stream" cppcms/src
> cppcms/src/json.cpp:836:        bool parse_stream(std::istream 
> &in,value &out,bool force_eof,int &error_at_line)
> cppcms/src/json.cpp:1051:       
> if(!parse_stream(in,*this,full,err_line)) {
> cppcms/src/json.cpp:1063:       if(!parse_stream(in,v,false,line_no))
>
> as you can see it's a method declared in line 836.
> Did you use Strg+F?
>
>
> Am 28.12.2011 12:21, schrieb 44073786:
>> Hello:
>> when I read the source code. In json.cpp and json.h I did not see the 
>> declare of the parse_stream function  but you use it on json.cpp in 
>> 1051 line.why /?
>>  I don not know why? please help me .thank you very much!
>>
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Write once. Port to many.
>> Get the SDK and tools to simplify cross-platform app development. Create
>> new or port existing apps to sell to consumers worldwide. Explore the
>> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>> http://p.sf.net/sfu/intel-appdev
>>
>>
>> _______________________________________________
>> Cppcms-users mailing list
>> Cpp...@li...
>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
>
>
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] In json.cpp and json.h I did not see thedeclareof the parse_stream function but you use it onjson.cpp in 1051 line.why /?

[4. <440...@qq...>]

I do not know whether my idea is right ? is the  bool parse_stream(std::istream &in,value &out,bool force_eof,int &error_at_line) in the default global scope?
 
 
------------------ Original ------------------
From:  "44073786"<440...@qq...>;
Date:  Wed, Dec 28, 2011 07:52 PM
To:  "cppcms-users"<cpp...@li...>; 

Subject:  Re: [Cppcms-users] In json.cpp and json.h I did not see thedeclareof the parse_stream function but you use it onjson.cpp in 1051 line.why /?

 
I konw it in 836,but I think it should  bool value::parse_stream(std::istream &in,value &out,bool force_eof,int &error_at_line),but not  bool parse_stream(std::istream &in,value &out,bool force_eof,int &error_at_line) ? I don not now why.? 
 
 
------------------ Original ------------------
From:  "Marcel Hellwig"<ke...@co...>;
Date:  Wed, Dec 28, 2011 07:44 PM
To:  "cppcms-users"<cpp...@li...>; 

Subject:  Re: [Cppcms-users] In json.cpp and json.h I did not see the declareof the parse_stream function but you use it on json.cpp in 1051 line.why /?

 
                   grep -Hirn "parse_stream" cppcms/src
     cppcms/src/json.cpp:836:        bool parse_stream(std::istream     &in,value &out,bool force_eof,int &error_at_line)
     cppcms/src/json.cpp:1051:            if(!parse_stream(in,*this,full,err_line)) {
     cppcms/src/json.cpp:1063:            if(!parse_stream(in,v,false,line_no))
     
     as you can see it's a method declared in line 836.
     Did you use Strg+F?
     
     
     Am 28.12.2011 12:21, schrieb 44073786:            Hello:
       when I read the source code. In json.cpp and json.h I did not         see the declare of the parse_stream function  but you use it on         json.cpp in 1051 line.why /?
        I don not know why? please help me .thank you very much!
       
       
       
       
       
       
       
       
       
       
       
       
                                                                                               
                                                                                                                                                                    
       
              
       ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create  new or port existing apps to sell to consumers worldwide. Explore the  Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev       
              
       _______________________________________________ Cppcms-users mailing list Cpp...@li... https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] In json.cpp and json.h I did not see the declareof the parse_stream function but you use it on json.cpp in 1051 line.why /?

[4. <440...@qq...>]

I konw it in 836,but I think it should  bool value::parse_stream(std::istream &in,value &out,bool force_eof,int &error_at_line),but not  bool parse_stream(std::istream &in,value &out,bool force_eof,int &error_at_line) ? I don not now why.? 
 
 
------------------ Original ------------------
From:  "Marcel Hellwig"<ke...@co...>;
Date:  Wed, Dec 28, 2011 07:44 PM
To:  "cppcms-users"<cpp...@li...>; 

Subject:  Re: [Cppcms-users] In json.cpp and json.h I did not see the declareof the parse_stream function but you use it on json.cpp in 1051 line.why /?

 
                   grep -Hirn "parse_stream" cppcms/src
     cppcms/src/json.cpp:836:        bool parse_stream(std::istream     &in,value &out,bool force_eof,int &error_at_line)
     cppcms/src/json.cpp:1051:            if(!parse_stream(in,*this,full,err_line)) {
     cppcms/src/json.cpp:1063:            if(!parse_stream(in,v,false,line_no))
     
     as you can see it's a method declared in line 836.
     Did you use Strg+F?
     
     
     Am 28.12.2011 12:21, schrieb 44073786:            Hello:
       when I read the source code. In json.cpp and json.h I did not         see the declare of the parse_stream function  but you use it on         json.cpp in 1051 line.why /?
        I don not know why? please help me .thank you very much!
       
       
       
       
       
       
       
       
       
       
       
       
                                                                                               
                                                                                                                                                                    
       
              
       ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create  new or port existing apps to sell to consumers worldwide. Explore the  Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev       
              
       _______________________________________________ Cppcms-users mailing list Cpp...@li... https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] In json.cpp and json.h I did not see the declare of the parse_stream function but you use it on json.cpp in 1051 line.why /?

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

grep -Hirn "parse_stream" cppcms/src
cppcms/src/json.cpp:836:        bool parse_stream(std::istream &in,value 
&out,bool force_eof,int &error_at_line)
cppcms/src/json.cpp:1051:        if(!parse_stream(in,*this,full,err_line)) {
cppcms/src/json.cpp:1063:        if(!parse_stream(in,v,false,line_no))

as you can see it's a method declared in line 836.
Did you use Strg+F?


Am 28.12.2011 12:21, schrieb 44073786:
> Hello:
> when I read the source code. In json.cpp and json.h I did not see the 
> declare of the parse_stream function  but you use it on json.cpp in 
> 1051 line.why /?
>  I don not know why? please help me .thank you very much!
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
>
>
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users

[Cppcms-users] In json.cpp and json.h I did not see the declare of the parse_stream function but you use it on json.cpp in 1051 line.why /?

[4. <440...@qq...>]

Hello:
when I read the source code. In json.cpp and json.h I did not see the declare of the parse_stream function  but you use it on json.cpp in 1051 line.why /?
 I don not know why? please help me .thank you very much!

Re: [Cppcms-users] "endless" stream of data

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

>________________________________
> From: Marcel Hellwig <ke...@co...>
>To: Artyom Beilis <art...@ya...>; cpp...@li... 
>Sent: Tuesday, December 27, 2011 9:34 PM
>Subject: Re: [Cppcms-users] "endless" stream of data
> 
>Alright, my code is a bit different from yours and from the chat example but else it doesn't work.
>
>void SSE::loop(std::string /*page*/)
>{
>    response().io_mode(cppcms::http::response::asynchronous);

Don't need this... As if the application is mounted as asynchronous
(make sure you did) then it is the default mode.

>    response().set_header("Content-Type", "text/event-stream");
>
>    int counter = (rand() % 10) + 1;

General notes below

You write the code as it is synchronous code, it is not!
You don't work like this.


>
>    while (true) {
>        response().out() << "event: ping\n"

><< "data: {\"time\": \""
><< "foo" //note: this is just an example
><< "\"}\n\n";
>        counter--;
>
>        if (!counter) {
>            response().out() << "data: is a message at time "
><< "bar" << "\n\n";
>            counter = (rand() % 10) + 1;
>        }
>
>        context().async_flush_output(boost::bind(&SSE::handler, this, -1));

You should use a handler per call, Once you called async flush
you should not do further operation till you receive completion
notifications

>        booster::ptime::sleep(booster::ptime::seconds(1));

You block there entire event loop, you need to use booster::aio::deadline_timer
and handle events asynchronously...

>
>    }
>}
>
>void SSE::handler(int status)
>{
>    std::cout << "Status: " << status << std::endl;
>}
>
>two major questions. You told me to use release_context but if I do so, the connection "aborts" (access to unassigned context) while the second loop on response().out()

You release it and you become responsible for the context life time,
you need to keep it withing your class as long as you need.

>How can I figure out when the user "leaves" the page, so I can stop producing tons of messages?
>

Two ways:

a) The completion handler of async_flush_output returns a error status
b) You can using async_on_peer_reset callback.

Take a look in the chat example in the cppcms sources

get(std::string no) {
...

        else if(pos == messages_.size()) {
            // Get the context <-------------------------------------------
            booster::shared_ptr<cppcms::http::context> context=release_context();
            // Keep it         <--------------------------------------------
            waiters_.insert(context);
            // Handle disconnect Asynchronously!!!
            context->async_on_peer_reset(
                bind(
                    &chat::remove_context,
                    booster::intrusive_ptr<chat>(this),
                    context));
        }
...
}

Now take a look on function broadcast:

   void broadcast()
    {
        for(waiters_type::iterator waiter=waiters_.begin();waiter!=waiters_.end();++waiter) {
            (*waiter)->response().set_plain_text_header();
            (*waiter)->response().out() << messages_.back();
            // n
            (*waiter)->async_complete_response();
        }
        waiters_.clear();
    }

Lets change the line

            (*waiter)->async_complete_response();

To
            (*waiter)->async_flush_output(
                     boost::bind(&chat::new_handle,
                                  booster::intrusive_ptr<chat>(this),
                                  _1,
                                  *waiter,
                                   messages_.size()));

And add new handler for "endless handling":

   void new_handle(cppcms::http::context::completion_type t,
                   booster::shared_ptr<cppcms::http::context> context,
                   size_t broadcasted)
   {
          if(t) return; // non-zero error
          if(broadcasted == messages_.size()) 
              // no new messages mark for waiting once agains
              waiters_.push_back(context);
          else {
              // send all we got meanwhile
              while(broadcasted < messages_.size()) {
                     context->response().out() << messages_[broadcaster] <<'\n;
                     broadcasted++;
              }
              // send message asychronously
              context->async_flush_output(
                     boost::bind(
                          &chat::new_handle,
                           booster::intrusive_ptr<chat>(this),
                           _1,
                           context,
                           messages_.size()));
          }
   }



And you got chat with "endless" stream, of course it would not work with
the given XMLHttpRequest example but you get the general idea.

BOTTOM LINE
-----------

Think asynchronously... 

Regards,
  Artyom

Re: [Cppcms-users] "endless" stream of data

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

Alright, my code is a bit different from yours and from the chat example 
but else it doesn't work.

void SSE::loop(std::string /*page*/)
{
     response().io_mode(cppcms::http::response::asynchronous);
     response().set_header("Content-Type", "text/event-stream");

     int counter = (rand() % 10) + 1;

     while (true) {
         response().out() << "event: ping\n"
<< "data: {\"time\": \""
<< "foo" //note: this is just an example
<< "\"}\n\n";
         counter--;

         if (!counter) {
             response().out() << "data: is a message at time "
<< "bar" << "\n\n";
             counter = (rand() % 10) + 1;
         }

         context().async_flush_output(boost::bind(&SSE::handler, this, -1));
         booster::ptime::sleep(booster::ptime::seconds(1));

     }
}

void SSE::handler(int status)
{
     std::cout << "Status: " << status << std::endl;
}

two major questions. You told me to use release_context but if I do so, 
the connection "aborts" (access to unassigned context) while the second 
loop on response().out()
How can I figure out when the user "leaves" the page, so I can stop 
producing tons of messages?

Every connection should get it's own messagestream (it's user dependent).

Re: [Cppcms-users] "endless" stream of data

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

Please, read carefully the chat example and see how callbacks are used.
It is all about event handling. Remember the you run inside event loop.
and operations are done via callbacks. It is not like in PHP
where "comet" event holds entire thread.


Read 3 articles under "Concepts" there:  http://art-blog.no-ip.info/wikipp/en/page/cppcms_1x


You probably looking for something like this.


myservice : public cppcms::application {

   void main(std::string) 

   {
     context_=release_context();
    // now we can handle new connection - note it is very simplistic
   // we store only one connection, there may be more

   }


   void handle_some_external_event()
   {
       context_->out() << "event!" << std::endl;
       context_->async_flush_output(boost::bind(&my_service::on_complete,this,_1);

   }
   void on_complete(completion_type c)
   {
    if(c!=operation_completed) { // error - disconnect
      context_.reset(); // delete context

    }
    // done we can wait for next event
    ...

   }

   booster::shared_ptr<cppcms::http::context> context_;

 };


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


>________________________________
> From: Marcel Hellwig <ke...@co...>
>To: Artyom Beilis <art...@ya...>; cpp...@li... 
>Sent: Tuesday, December 27, 2011 4:15 PM
>Subject: Re: [Cppcms-users] "endless" stream of data
> 
>could you give me a simple example? Just writing something stupid. I don't get the async flush output method. Don't know what the handler is and does.
>
>
>

Re: [Cppcms-users] "endless" stream of data

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

could you give me a simple example? Just writing something stupid. I 
don't get the async flush output method. Don't know what the handler is 
and does.

Re: [Cppcms-users] "endless" stream of data

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

Take a look on a function:  cppcms::http::context::async_flush_output

    http://art-blog.no-ip.info/cppcms_ref_v0_99/classcppcms_1_1http_1_1context.html#a134469b5dc46667596c360b8b7284dff


Small notes:

1. Don't use finalize, it is not needed any more.
2. async_complete_response() - completes the response, and you don't want to.

Take a look on the chat example, but instead of calling async_complete_response() you call async_flush_output()
with a callback.

Note: you need to release the context the same way it is done in chat example.
 
Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.sf.net/
CppDB - C++ SQL Connectivity: http://cppcms.sf.net/sql/cppdb/


>________________________________
> From: Marcel Hellwig <ke...@co...>
>To: cpp...@li... 
>Sent: Tuesday, December 27, 2011 3:42 PM
>Subject: [Cppcms-users] "endless" stream of data
> 
>
>Hi guys,
>
>I'd like to use some new, cool, trendy, hightech, modern and
    ultracool technique called SSE or ServerSentEvents
(https://developer.mozilla.org/en/Server-sent_events/Using_server-sent_events)
>
>But to do that I'd like to make an endless stream of data like the
    PHP script does. But how to "flush" the data to the client?
>I tried 
>
>response().finalize()
>>context().async_complete_response() (but i can't use it, because
      the object isn't useable for communication anymore)
>>
>>
and some other tricks. So I want to now, how to make an asynchron, endless stream of data in cppcms. Maybe you can add an example for this, because it's HTML5, and that rocks ;)
>
>Regards
>
>Marcel Hellwig
>
>------------------------------------------------------------------------------
>Write once. Port to many.
>Get the SDK and tools to simplify cross-platform app development. Create 
>new or port existing apps to sell to consumers worldwide. Explore the 
>Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>http://p.sf.net/sfu/intel-appdev
>_______________________________________________
>Cppcms-users mailing list
>Cpp...@li...
>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>

[Cppcms-users] "endless" stream of data

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

Hi guys,

I'd like to use some new, cool, trendy, hightech, modern and ultracool 
technique called SSE or ServerSentEvents 
(https://developer.mozilla.org/en/Server-sent_events/Using_server-sent_events)

But to do that I'd like to make an endless stream of data like the PHP 
script does. But how to "flush" the data to the client?
I tried

    response().finalize()
    context().async_complete_response() (but i can't use it, because the
    object isn't useable for communication anymore)

and some other tricks. So I want to now, how to make an asynchron, 
endless stream of data in cppcms. Maybe you can add an example for this, 
because it's HTML5, and that rocks ;)

Regards

Marcel Hellwig

Re: [Cppcms-users] Can't launch web application

[陈抒 <csf...@gm...>]

I removed daemon.lock from config.js file because I can get the process id
via this command:" pidof myweb"
Thank you.


陈抒
Best regards
http://blog.csdn.net/sheismylife


On Mon, Dec 26, 2011 at 1:15 PM, Artyom Beilis <art...@ya...> wrote:

> Yes, you need to remove lock file:
>
>   http://art-blog.no-ip.info/wikipp/en/page/cppcms_1x_config#daemon.lock
>
> Of course make sure the process is not running (pid= content of this file)
>
> Artyom Beilis
> --------------
> CppCMS - C++ Web Framework: http://cppcms.sf.net/
> CppDB - C++ SQL Connectivity: http://cppcms.sf.net/sql/cppdb/
>
>   ------------------------------
> *From:* 陈抒 <csf...@gm...>
> *To:* cpp...@li...
> *Sent:* Monday, December 26, 2011 2:43 AM
> *Subject:* [Cppcms-users] Can't launch web application
>
> Hello:
>   I always got the following error info recently :
>  Failed to create a lock file:system: File exists
>
>   Any idea?
>
>
> 陈抒
>
> Best regards
> http://blog.csdn.net/sheismylife
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>

Re: [Cppcms-users] Can't launch web application

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

Yes, you need to remove lock file:

  http://art-blog.no-ip.info/wikipp/en/page/cppcms_1x_config#daemon.lock


Of course make sure the process is not running (pid= content of this file)
 

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


>________________________________
> From: 陈抒 <csf...@gm...>
>To: cpp...@li... 
>Sent: Monday, December 26, 2011 2:43 AM
>Subject: [Cppcms-users] Can't launch web application
> 
>
>Hello:
>  I always got the following error info recently :
> Failed to create a lock file:system: File exists
>
>
>  Any idea?
>
>
>陈抒
>
>Best regards
>http://blog.csdn.net/sheismylife
>
>------------------------------------------------------------------------------
>Write once. Port to many.
>Get the SDK and tools to simplify cross-platform app development. Create 
>new or port existing apps to sell to consumers worldwide. Explore the 
>Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>http://p.sf.net/sfu/intel-appdev
>_______________________________________________
>Cppcms-users mailing list
>Cpp...@li...
>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>

[Cppcms-users] Can't launch web application

[陈抒 <csf...@gm...>]

Hello:
  I always got the following error info recently :
 Failed to create a lock file:system: File exists

  Any idea?


陈抒

Best regards
http://blog.csdn.net/sheismylife

Re: [Cppcms-users] 回复： what is mean of the CPPCMS_API ?

[陈抒 <csf...@gm...>]

Maybe you can have a look at this:
http://msdn.microsoft.com/en-us/library/3y1sfaz2.aspx

CPPCMS_API Macro supports several platforms,VC++ need __declspec(dllexport)
or  __declspec(dllimport),and Linux doesn't need this.



陈抒
Best regards
http://blog.csdn.net/sheismylife


2011/12/25 44073786 <440...@qq...>

>
> **
>  I know the file, I want to know .what is problem it can solved?
>
> ------------------ 原始邮件 ------------------
> *发件人:* "csfreebird"<csf...@gm...>;
> *发送时间:* 2011年12月25日(星期天) 上午10:38
> *收件人:* "cppcms-users"<cpp...@li...>; **
> *主题:* Re: [Cppcms-users] what is mean of the CPPCMS_API ?
>
> Do you want to know where the definition of CPPCMS_API?
> You can find it in defs.h file.
>
> #if defined(__WIN32) || defined(_WIN32) || defined(WIN32) ||
> defined(__CYGWIN__)
> # if defined(DLL_EXPORT)
> # if defined(CPPCMS_SOURCE) || defined(CPPCMS_LOCALE_SOURCE)
> # define CPPCMS_API __declspec(dllexport)
> # else
> # define CPPCMS_API __declspec(dllimport)
> # endif
> # else
> # define CPPCMS_API
> # endif
> #else // ELF BINARIES
> # define CPPCMS_API
> #endif
>
> 陈抒
> Best regards
> http://blog.csdn.net/sheismylife
>
>
> On Sun, Dec 25, 2011 at 10:35 AM, 陈抒 <csf...@gm...> wrote:
>
>> What problem should be solved?
>>
>>
>> 陈抒
>> Best regards
>> http://blog.csdn.net/sheismylife
>>
>>
>> On Sun, Dec 25, 2011 at 10:11 AM, 44073786 <440...@qq...> wrote:
>>
>>>
>>> When i read the source code ,I find the CPPCMS_API in service.h file at
>>> 70 line (class CPPCMS_API service).I have never seen this use .  what
>>> problem did it can solved ? who can tell me it. thank you very much.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Write once. Port to many.
>>> Get the SDK and tools to simplify cross-platform app development. Create
>>> new or port existing apps to sell to consumers worldwide. Explore the
>>> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>>> http://p.sf.net/sfu/intel-appdev
>>> _______________________________________________
>>> Cppcms-users mailing list
>>> Cpp...@li...
>>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>>
>>>
>>
> **
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>

[Cppcms-users] 回复： what is mean of the CPPCMS_API ?

[4. <440...@qq...>]

I know the file, I want to know .what is problem it can solved?
 
------------------ 原始邮件 ------------------
发件人: "csfreebird"<csf...@gm...>;
发送时间: 2011年12月25日(星期天) 上午10:38
收件人: "cppcms-users"<cpp...@li...>; 

主题: Re: [Cppcms-users] what is mean of the CPPCMS_API ?

 
Do you want to know where the definition of CPPCMS_API?
You can find it in defs.h file.


#if defined(__WIN32) || defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__)
 #	if defined(DLL_EXPORT)
#		if defined(CPPCMS_SOURCE) || defined(CPPCMS_LOCALE_SOURCE)
 #			define CPPCMS_API __declspec(dllexport)
#		else
#			define CPPCMS_API __declspec(dllimport)
 #		endif
#	else
#		define CPPCMS_API
 #	endif
#else // ELF BINARIES
#	define CPPCMS_API
#endif

 
陈抒 
Best regards
http://blog.csdn.net/sheismylife
 

On Sun, Dec 25, 2011 at 10:35 AM, 陈抒 <csf...@gm...> wrote:
 What problem should be solved?

陈抒 
Best regards
http://blog.csdn.net/sheismylife
 

On Sun, Dec 25, 2011 at 10:11 AM, 44073786 <440...@qq...> wrote:

  

 When i read the source code ,I find the CPPCMS_API in service.h file at 70 line (class CPPCMS_API service).I have never seen this use .  what problem did it can solved ? who can tell me it. thank you very much.
                                                                                                                                                               







 




------------------------------------------------------------------------------
 Write once. Port to many.
 Get the SDK and tools to simplify cross-platform app development. Create
 new or port existing apps to sell to consumers worldwide. Explore the
 Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
 http://p.sf.net/sfu/intel-appdev
_______________________________________________
 Cppcms-users mailing list
 Cpp...@li...
 https://lists.sourceforge.net/lists/listinfo/cppcms-users

Re: [Cppcms-users] what is mean of the CPPCMS_API ?

[陈抒 <csf...@gm...>]

Do you want to know where the definition of CPPCMS_API?
You can find it in defs.h file.

#if defined(__WIN32) || defined(_WIN32) || defined(WIN32) ||
defined(__CYGWIN__)
# if defined(DLL_EXPORT)
# if defined(CPPCMS_SOURCE) || defined(CPPCMS_LOCALE_SOURCE)
# define CPPCMS_API __declspec(dllexport)
# else
# define CPPCMS_API __declspec(dllimport)
# endif
# else
# define CPPCMS_API
# endif
#else // ELF BINARIES
# define CPPCMS_API
#endif

陈抒
Best regards
http://blog.csdn.net/sheismylife


On Sun, Dec 25, 2011 at 10:35 AM, 陈抒 <csf...@gm...> wrote:

> What problem should be solved?
>
>
> 陈抒
> Best regards
> http://blog.csdn.net/sheismylife
>
>
> On Sun, Dec 25, 2011 at 10:11 AM, 44073786 <440...@qq...> wrote:
>
>>
>> When i read the source code ,I find the CPPCMS_API in service.h file at
>> 70 line (class CPPCMS_API service).I have never seen this use .  what
>> problem did it can solved ? who can tell me it. thank you very much.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Write once. Port to many.
>> Get the SDK and tools to simplify cross-platform app development. Create
>> new or port existing apps to sell to consumers worldwide. Explore the
>> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>> http://p.sf.net/sfu/intel-appdev
>> _______________________________________________
>> Cppcms-users mailing list
>> Cpp...@li...
>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>
>>
>

Re: [Cppcms-users] what is mean of the CPPCMS_API ?

[陈抒 <csf...@gm...>]

What problem should be solved?


陈抒
Best regards
http://blog.csdn.net/sheismylife


On Sun, Dec 25, 2011 at 10:11 AM, 44073786 <440...@qq...> wrote:

>
> When i read the source code ,I find the CPPCMS_API in service.h file at 70
> line (class CPPCMS_API service).I have never seen this use .  what problem
> did it can solved ? who can tell me it. thank you very much.
>
>
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------------
> Write once. Port to many.
> Get the SDK and tools to simplify cross-platform app development. Create
> new or port existing apps to sell to consumers worldwide. Explore the
> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
> http://p.sf.net/sfu/intel-appdev
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>

[Cppcms-users] 回复： Vandalism on Wiki

[4. <440...@qq...>]

hello,I read http://art-blog.no-ip.info/wikipp/en/page/wiki_editing and test in the sandox,but when create  a link [hello](wikipp/en/page/hello) in the sandox,where i edit the hello page? I do not knonw how to do this action?
 
 
------------------ 原始邮件 ------------------
发件人: "Artyom Beilis"<art...@ya...>;
发送时间: 2011年12月24日(星期六) 晚上9:13
收件人: "cpp...@li..."<cpp...@li...>; 

主题: Re: [Cppcms-users] Vandalism on Wiki

 
No problem,


:-)

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


>________________________________
> From: 陈抒 <csf...@gm...>
>To: Artyom Beilis <art...@ya...>; cpp...@li... 
>Sent: Saturday, December 24, 2011 2:46 PM
>Subject: Re: [Cppcms-users] Vandalism on Wiki
> 
>
>By the way,I didn't realize I made a big mistake until you inform us.
>:(
>
>
>陈抒 
>Best regards
>http://blog.csdn.net/sheismylife
>
>

------------------------------------------------------------------------------
Write once. Port to many.
Get the SDK and tools to simplify cross-platform app development. Create 
new or port existing apps to sell to consumers worldwide. Explore the 
Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
http://p.sf.net/sfu/intel-appdev
_______________________________________________
Cppcms-users mailing list
Cpp...@li...
https://lists.sourceforge.net/lists/listinfo/cppcms-users

[Cppcms-users] what is mean of the CPPCMS_API ?

[4. <440...@qq...>]

When i read the source code ,I find the CPPCMS_API in service.h file at 70 line (class CPPCMS_API service).I have never seen this use .  what problem did it can solved ? who can tell me it. thank you very much.

Re: [Cppcms-users] Vandalism on Wiki

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

 
>________________________________
> From: 陈抒 <csf...@gm...>
> 
>
>A few questions:
>1.Why all registered users can share and edit one global setting,it's dangerous.
>It should only be edited by administrators or every body should have his/her own setting.

Because wikipp is very simple wiki system that was created as proof on concept.

>2.Can you take preventive measures?Other newer might make the same mistake as me.


Code need to be changed, currently it is far from being top priority

>3.Actually,I still don't know how to add my articles into you wiki to help other programmers?I wrote five articles in Chinese before,they can be translated into English.See cppcms group of my blog:
>http://blog.csdn.net/sheismylife.
>It seems that the users area has not this feature. I still don't understand the rules of your wiki now.I and other newer need one document that tells us how to add our articles step by step.
>

If you want to create articles in Chinese you need to provide a Chinese translation
for the wikipp engine.

The sources of the wikipp are there:

   https://cppcms.svn.sourceforge.net/svnroot/cppcms/wikipp/branches/for_cppcms_v100

You need to provide a translation for this template file, using one of your
favorite translation tools pedit, gtranslator or lokalize:

   https://cppcms.svn.sourceforge.net/svnroot/cppcms/wikipp/branches/for_cppcms_v100/po/wikipp.pot


When it is ready I can add it to the service similarly to Hebrew "he" and Russian "ru" 

translation.

If the articles are in English, follow the links I had gave you,
and see where they fit in this page (tutorials etc)

   http://art-blog.no-ip.info/wikipp/en/page/cppcms_1x


Best,

Artyom

>
>Bring to you the trouble really sorry!
> 
>陈抒 
>Best regards
>http://blog.csdn.net/sheismylife
>
>
>
>On Sat, Dec 24, 2011 at 8:00 PM, Artyom Beilis <art...@ya...> wrote:
>
>>
>>>Hi,
>>> Last night,I tried to add a test article using Users Area with user name 'csfreebird'.
>>> But I didn't know  how to use it correctly ,maybe I made one mistake.
>>
>>Users area is a area that only registered users can operate (not visitors)
>>and it contains general settings.
>>
>>As you notices you had changed wiki title, wiki contact information 
>>and copyrights line.
>>
>>You could clearly see that you changed things that should
>>not being changed.
>>
>>You could revert the changes or drop a mail telling that
>>you did something wrong and asking to fix it.
>>
>>
>>
>>>  I just want to find a way to add my articles about CppCMS into the wiki to help others. 
>>>陈抒 
>>
>>You can read this tutorial linked from the main page.
>>
>>http://art-blog.no-ip.info/wikipp/en/page/wiki_editing
>>
>>
>>>Best regards
>>>http://blog.csdn.net/sheismylife
>>>
>>>
>>
>>I reverted the registration option so now anybody can register
>>on the wiki again.
>>
>>Also **you** would have to re-register once again
>>as I deleted your account.
>>
>>Next time, please be careful with what are you doing.
>>
>>It is fine to update wiki and create new pages - that is wiki
>>was created for, but you should see what and how should be done.
>>
>>Artyom Beilis
>>
>>
>>
>>
>>
>>>
>>>On Sat, Dec 24, 2011 at 5:36 AM, Artyom Beilis <art...@ya...> wrote:
>>>
>>>Hello,
>>>>
>>>>Due to acts of vandalism on the wiki page I had
>>>>temporary disabled registration of new users on the wiki.
>>>>
>>>>The user that seems to be responsible for the actions was deleted.
>>>>Every existing user have to login again to be able to work.
>>>>
>>>>
>>>> 
>>>>Artyom Beilis
>>>>--------------
>>>>CppCMS - C++ Web Framework:   http://cppcms.sf.net/
>>>>CppDB - C++ SQL Connectivity: http://cppcms.sf.net/sql/cppdb/
>>>>
>>>>------------------------------------------------------------------------------
>>>>Write once. Port to many.
>>>>Get the SDK and tools to simplify cross-platform app development. Create
>>>>new or port existing apps to sell to consumers worldwide. Explore the
>>>>Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>>>>http://p.sf.net/sfu/intel-appdev
>>>>_______________________________________________
>>>>Cppcms-users mailing list
>>>>Cpp...@li...
>>>>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>>>
>>>
>>>
>>>
>>
>>------------------------------------------------------------------------------
>>Write once. Port to many.
>>Get the SDK and tools to simplify cross-platform app development. Create
>>new or port existing apps to sell to consumers worldwide. Explore the
>>Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>>http://p.sf.net/sfu/intel-appdev
>>_______________________________________________
>>Cppcms-users mailing list
>>Cpp...@li...
>>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>
>
>------------------------------------------------------------------------------
>Write once. Port to many.
>Get the SDK and tools to simplify cross-platform app development. Create 
>new or port existing apps to sell to consumers worldwide. Explore the 
>Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join
>http://p.sf.net/sfu/intel-appdev
>_______________________________________________
>Cppcms-users mailing list
>Cpp...@li...
>https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>
>