[Cppcms-users] timedout asynchronous socket

[Sergiu A. <ser...@ya...>]

Hello all,

I want to implement a timedout asynchronous socket read. My application extends json_rpc_server:

myapi::myapi(cppcms::service &srv) :cppcms::rpc::json_rpc_server(srv) ...


I have this class, "base_who", which has this method:

std::string base_who::timedout_request(cppcms::service &srv, std::string command){
    

    ... /* connect the socket, send some command etc */ ...


    booster::aio::deadline_timer timer(srv.get_io_service());
    timer.expires_from_now(booster::ptime::seconds(100));

    timer.async_wait(std::bind(&base_who::on_timeout,shared_from_this(),std::placeholders::_1));

    std::cout << "AFTER ASYNC WAIT" << std::endl;

    the_socket.async_read_some(
                        booster::aio::buffer(async_buffer_,sizeof(async_buffer_)),
                            std::bind(&base_who::on_read,shared_from_this(),
                                    std::placeholders::_1,
                                    std::placeholders::_2));

    ... /* etc  */ ...
}


The problem is that when I call timer.async_wait, something happens and I receive "Internal Service Error" somewhere. The line "AFTER ASYNC WAIT" is never reached.

I think this is because of this (from timer's async_wait method description):
            /// Wait asynchronously for the timer.
            ///
            /// If io_service is not assigned throws system::system_error, all other errors reported via \a h

So, I think the io_service is not correctly assigned.
The base_who class is used in a method in myapi and timedout_request is called from there:

void myapi::request(std::string command) {


    base_who myconnection(ip, port);
    myconnection.timedout_request(service(), std::string("some_command"));

    ... /* etc */ ...

 }

Do I use timer.async_wait correctly? I saw something similar in the json_rpc_chat example, but that uses <boost/bind.hpp>. I would like to not include it, use just "booster".

What could be the problem?
Thank you,

--
Fatol Sergiu Adrian
Team Leader & Senior PHP Developer
Arobs Transilvania Software

adi...@ar...
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