Boost ASIO - Client Request TCP Help..!! - Boost

11 Oct 2013

      All,

Below is the client request code which makes a CONNECT request to remote
SERVER (having IP & PORT#) but gives error code during send() process -

---
#include <iostream>
#include <string>
#include 

namespace opp = boost::asio::ip;

struct PacketFormat
{
    unsigned short length;          //Length
    int sequenceNumber;
};

int main(int argc, char* argv[])
{
                std::string port = "8000";
                std::string hostname = "X.X.X.X";
                boost::asio::io_service io_service;
                opp::tcp::resolver resolver(io_service);
                opp::tcp::resolver::query query(hostname, port);
                opp::tcp::resolver::iterator iter = resolver.resolve(query);
                opp::tcp::resolver::iterator end; // End marker.

                // Looking for a successful endpoint connection
                opp::tcp::socket socket(io_service);
                boost::system::error_code error =
boost::asio::error::host_not_found;
                while (error && iter != end)
                {
                        socket.close();
                        socket.connect(*iter++ , error);
                }
                if (error)
                        throw boost::system::system_error(error);

                std::cout << "Connected ..Thanks!! \n" << std::endl;

                PacketFormat pf; // where PacketFormat is struct defined
                pf.length = 236;
                pf.sequenceNumber = 2;

                std::cout << "Sending Logon Message.. . ..!! \n" <<
std::endl;

                std::size_t n = opp::tcp::socket::send(iter,
boost::asio::buffer(&pf));
                if (n < 0)
             std::cerr << "ERROR writing to Server .. . ..\n" << std::endl;
                std::cout << "Logon Message Sent.. . ..Thanks!!\n" <<
std::endl;

                if (n < 0)
                        std::cerr << "ERROR writing to Server .. . ..\n" <<
std::endl;
                std::cout << "Logon Message Sent.. . ..Thanks!!\n" <<
std::endl;

  return 0;
}
__

The error message obtained is -

--
# g++ testclient.cpp -o testclient -lboost_system -lboost_thread
testclient.cpp: In function âint main(int, char**)â:
testclient.cpp:42: error: no matching function for call to
âbuffer(PacketFormat*)â
/usr/local/include/boost/asio/buffer.hpp:704: note: candidates are:
boost::asio::mutable_buffers_1 boost::asio::buffer(const
boost::asio::mutable_buffer&)
/usr/local/include/boost/asio/buffer.hpp:717: note:
boost::asio::mutable_buffers_1 boost::asio::buffer(const
boost::asio::mutable_buffer&, size_t)
/usr/local/include/boost/asio/buffer.hpp:733: note:
boost::asio::const_buffers_1 boost::asio::buffer(const
boost::asio::const_buffer&)
/usr/local/include/boost/asio/buffer.hpp:746: note:
boost::asio::const_buffers_1 boost::asio::buffer(const
boost::asio::const_buffer&, size_t)
/usr/local/include/boost/asio/buffer.hpp:762: note:
boost::asio::mutable_buffers_1 boost::asio::buffer(void*, size_t)
/usr/local/include/boost/asio/buffer.hpp:772: note:
boost::asio::const_buffers_1 boost::asio::buffer(const void*, size_t)
__

Please help for L#42 "tcp::socket::send()" proper call. I believe above
code fine apart from L#42 error.

Thanks!!

Boost ASIO - Client Request TCP Help..!!

Rahul Mathur

Cliff Green

Rahul Mathur

james

Joseph Van Riper

Rahul Mathur

Joseph Van Riper

Rahul Mathur

Joseph Van Riper

Joseph Van Riper

Rahul Mathur

Joseph Van Riper

Rahul Mathur

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