Re: [Boost-users] Boost.Asio server application close get "This application has requested the Runtime to terminate it in an unusual way."

9 Mar 2010

      There is a sample base on Boost.Asio example --> chat.
Most changes on chat_server.cpp

chat_message.hpp:
//
// chat_message.hpp
// ~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef CHAT_MESSAGE_HPP
#define CHAT_MESSAGE_HPP

#include <cstdio>
#include <cstdlib>
#include <cstring>

class chat_message
{
public:
  enum { header_length = 4 };
  enum { max_body_length = 512 };

  chat_message()
    : body_length_(0)
  {
  }

  const char* data() const
  {
    return data_;
  }

  char* data()
  {
    return data_;
  }

  size_t length() const
  {
    return header_length + body_length_;
  }

  const char* body() const
  {
    return data_ + header_length;
  }

  char* body()
  {
    return data_ + header_length;
  }

  size_t body_length() const
  {
    return body_length_;
  }

  void body_length(size_t length)
  {
    body_length_ = length;
    if (body_length_ > max_body_length)
      body_length_ = max_body_length;
  }

  bool decode_header()
  {
    using namespace std; // For strncat and atoi.
    char header[header_length + 1] = "";
    strncat(header, data_, header_length);
    body_length_ = atoi(header);
    if (body_length_ > max_body_length)
    {
      body_length_ = 0;
      return false;
    }
    return true;
  }

  void encode_header()
  {
    using namespace std; // For sprintf and memcpy.
    char header[header_length + 1] = "";
    sprintf(header, "%4d", body_length_);
    memcpy(data_, header, header_length);
  }

private:
  char data_[header_length + max_body_length];
  size_t body_length_;
};

#endif // CHAT_MESSAGE_HPP

chat_client.cpp:
//
// chat_client.cpp
// ~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include <cstdlib>
#include <deque>
#include <iostream>
#include 
#include 
#include 
#include "chat_message.hpp"

using boost::asio::ip::tcp;

typedef std::deque chat_message_queue;

class chat_client
{
public:
  chat_client(boost::asio::io_service& io_service,
      tcp::resolver::iterator endpoint_iterator)
    : io_service_(io_service),
      socket_(io_service)
  {
    tcp::endpoint endpoint = *endpoint_iterator;
    socket_.async_connect(endpoint,
        boost::bind(&chat_client::handle_connect, this,
          boost::asio::placeholders::error, ++endpoint_iterator));
  }

  void write(const chat_message& msg)
  {
    io_service_.post(boost::bind(&chat_client::do_write, this, msg));
  }

  void close()
  {
    io_service_.post(boost::bind(&chat_client::do_close, this));
  }

private:

  void handle_connect(const boost::system::error_code& error,
      tcp::resolver::iterator endpoint_iterator)
  {
    if (!error)
    {
      boost::asio::async_read(socket_,
          boost::asio::buffer(read_msg_.data(), chat_message::header_length),
          boost::bind(&chat_client::handle_read_header, this,
            boost::asio::placeholders::error));
    }
    else if (endpoint_iterator != tcp::resolver::iterator())
    {
      socket_.close();
      tcp::endpoint endpoint = *endpoint_iterator;
      socket_.async_connect(endpoint,
          boost::bind(&chat_client::handle_connect, this,
            boost::asio::placeholders::error, ++endpoint_iterator));
    }
  }

  void handle_read_header(const boost::system::error_code& error)
  {
    if (!error && read_msg_.decode_header())
    {
      boost::asio::async_read(socket_,
          boost::asio::buffer(read_msg_.body(), read_msg_.body_length()),
          boost::bind(&chat_client::handle_read_body, this,
            boost::asio::placeholders::error));
    }
    else
    {
      do_close();
    }
  }

  void handle_read_body(const boost::system::error_code& error)
  {
    if (!error)
    {
      std::cout.write(read_msg_.body(), read_msg_.body_length());
      std::cout << "\n";
      boost::asio::async_read(socket_,
          boost::asio::buffer(read_msg_.data(), chat_message::header_length),
          boost::bind(&chat_client::handle_read_header, this,
            boost::asio::placeholders::error));
    }
    else
    {
      do_close();
    }
  }

  void do_write(chat_message msg)
  {
    bool write_in_progress = !write_msgs_.empty();
    write_msgs_.push_back(msg);
    if (!write_in_progress)
    {
      boost::asio::async_write(socket_,
          boost::asio::buffer(write_msgs_.front().data(),
            write_msgs_.front().length()),
          boost::bind(&chat_client::handle_write, this,
            boost::asio::placeholders::error));
    }
  }

  void handle_write(const boost::system::error_code& error)
  {
    if (!error)
    {
      write_msgs_.pop_front();
      if (!write_msgs_.empty())
      {
        boost::asio::async_write(socket_,
            boost::asio::buffer(write_msgs_.front().data(),
              write_msgs_.front().length()),
            boost::bind(&chat_client::handle_write, this,
              boost::asio::placeholders::error));
      }
    }
    else
    {
      do_close();
    }
  }

  void do_close()
  {
    socket_.close();
  }

private:
  boost::asio::io_service& io_service_;
  tcp::socket socket_;
  chat_message read_msg_;
  chat_message_queue write_msgs_;
};

int main(int argc, char* argv[])
{
  try
  {
    if (argc != 3)
    {
      std::cerr << "Usage: chat_client <host> <port>\n";
      return 1;
    }

    boost::asio::io_service io_service;

    tcp::resolver resolver(io_service);
    tcp::resolver::query query(argv[1], argv[2]);
    tcp::resolver::iterator iterator = resolver.resolve(query);

    chat_client c(io_service, iterator);

    boost::thread t(boost::bind(&boost::asio::io_service::run, &io_service));

    char line[chat_message::max_body_length + 1];
    while (std::cin.getline(line, chat_message::max_body_length + 1))
    {
      using namespace std; // For strlen and memcpy.
      chat_message msg;
      msg.body_length(strlen(line));
      memcpy(msg.body(), line, msg.body_length());
      msg.encode_header();
      c.write(msg);
    }

    c.close();
    t.join();
  }
  catch (std::exception& e)
  {
    std::cerr << "Exception: " << e.what() << "\n";
  }

  return 0;
}

chat_server.cpp:
//
// chat_server.cpp
// ~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#include <algorithm>
#include <cstdlib>
#include <deque>
#include <iostream>
#include <list>
#include <set>
#include 
#include 
#include 
#include 
#include 
#include "chat_message.hpp"

using boost::asio::ip::tcp;

//----------------------------------------------------------------------

typedef std::deque chat_message_queue;

//----------------------------------------------------------------------

class chat_participant
{
public:
  virtual ~chat_participant() {}
  virtual void deliver(const chat_message& msg) = 0;
  virtual std::string identifier() = 0;
  virtual void close() = 0;
};

typedef boost::shared_ptr chat_participant_ptr;

//----------------------------------------------------------------------

class releaser
{
public:
    virtual ~releaser() {};
    virtual void session_release() = 0;
};

class chat_room
{
public:
  void init(releaser *p) {
      parent_ = p;
  }
  void join(chat_participant_ptr participant)
  {
    std::cout << participant->identifier() << " join room " <<
identifier() << std::endl;

    participants_.insert(participant);
    std::for_each(recent_msgs_.begin(), recent_msgs_.end(),
        boost::bind(&chat_participant::deliver, participant, _1));

    std::stringstream ss;
    ss << participant->identifier() << " join room ";
    chat_message msg;
    msg.body_length(ss.str().length());
    memcpy(msg.body(), ss.str().c_str(), msg.body_length());
    msg.encode_header();
    deliver(msg);
  }

  void leave(chat_participant_ptr participant)
  {
    std::cout << participant->identifier() << " leave room " <<
identifier() << std::endl;

    participants_.erase(participant);

    std::stringstream ss;
    ss << participant->identifier() << " leave room ";
    chat_message msg;
    msg.body_length(ss.str().length());
    memcpy(msg.body(), ss.str().c_str(), msg.body_length());
    msg.encode_header();
    deliver(msg);

    parent_->session_release();
  }

  void deliver(const chat_message& msg)
  {
    recent_msgs_.push_back(msg);
    while (recent_msgs_.size() > max_recent_msgs)
      recent_msgs_.pop_front();

    std::for_each(participants_.begin(), participants_.end(),
        boost::bind(&chat_participant::deliver, _1, boost::ref(msg)));
  }

  std::string identifier() { return identifier_; } const
  void identifier(const std::string &str) { identifier_ = str; }

  std::size_t live_count() const { return participants_.size(); }

  void close() {
    std::for_each(participants_.begin(), participants_.end(),
        boost::bind(&chat_participant::close, _1));
  }

private:
  std::set participants_;
  enum { max_recent_msgs = 100 };
  chat_message_queue recent_msgs_;
  std::string identifier_;
  releaser *parent_;
};

//----------------------------------------------------------------------

class chat_session
  : public chat_participant,
    public boost::enable_shared_from_this
{
public:
  chat_session(boost::asio::io_service& io_service, chat_room& room)
    : socket_(io_service), io_service_(io_service),
      room_(room)
  {
  }

  tcp::socket& socket()
  {
    return socket_;
  }

  void start()
  {
    room_.join(shared_from_this());
    boost::asio::async_read(socket_,
        boost::asio::buffer(read_msg_.data(), chat_message::header_length),
        boost::bind(
          &chat_session::handle_read_header, shared_from_this(),
          boost::asio::placeholders::error));
  }

  void deliver(const chat_message& msg)
  {
    bool write_in_progress = !write_msgs_.empty();
    write_msgs_.push_back(msg);
    if (!write_in_progress)
    {
      boost::asio::async_write(socket_,
          boost::asio::buffer(write_msgs_.front().data(),
            write_msgs_.front().length()),
          boost::bind(&chat_session::handle_write, shared_from_this(),
            boost::asio::placeholders::error));
    }
  }

  virtual std::string identifier()
  {
      std::stringstream ss;
      ss << socket_.remote_endpoint().address().to_string() << ":" <<
socket_.remote_endpoint().port();
      return ss.str();
  }

  virtual void close() {
      io_service_.post(boost::bind(&chat_session::do_close, this));
  }

  void handle_read_header(const boost::system::error_code& error)
  {
    if (!error && read_msg_.decode_header())
    {
      boost::asio::async_read(socket_,
          boost::asio::buffer(read_msg_.body(), read_msg_.body_length()),
          boost::bind(&chat_session::handle_read_body, shared_from_this(),
            boost::asio::placeholders::error));
    }
    else
    {
      room_.leave(shared_from_this());
    }
  }

  void handle_read_body(const boost::system::error_code& error)
  {
    if (!error)
    {
      char buf[chat_message::max_body_length + 1];
      memcpy(buf, read_msg_.body(), read_msg_.body_length());
      buf[read_msg_.body_length()] ='\0';
      std::stringstream ss;
      ss << identifier() << " say: " << buf;
      chat_message msg;
      msg.body_length(ss.str().length());
      memcpy(msg.body(), ss.str().c_str(), msg.body_length());
      msg.encode_header();
      room_.deliver(msg);
      boost::asio::async_read(socket_,
          boost::asio::buffer(read_msg_.data(), chat_message::header_length),
          boost::bind(&chat_session::handle_read_header, shared_from_this(),
            boost::asio::placeholders::error));
    }
    else
    {
      room_.leave(shared_from_this());
    }
  }

  void handle_write(const boost::system::error_code& error)
  {
    if (!error)
    {
      write_msgs_.pop_front();
      if (!write_msgs_.empty())
      {
        boost::asio::async_write(socket_,
            boost::asio::buffer(write_msgs_.front().data(),
              write_msgs_.front().length()),
            boost::bind(&chat_session::handle_write, shared_from_this(),
              boost::asio::placeholders::error));
      }
    }
    else
    {
      room_.leave(shared_from_this());
    }
  }

private:

  void do_close() {
      socket_.close();
  }
  tcp::socket socket_;
  chat_room& room_;
  chat_message read_msg_;
  chat_message_queue write_msgs_;
  boost::asio::io_service &io_service_;
};

typedef boost::shared_ptr chat_session_ptr;

//----------------------------------------------------------------------

class chat_server : public releaser
{
public:
  chat_server(boost::asio::io_service& io_service,
      const tcp::endpoint& endpoint)
    : io_service_(io_service),
      acceptor_(io_service, endpoint), endpoint_(endpoint)
  {
    room_.init(this);
    std::stringstream ss;
    ss << endpoint.port();
    room_.identifier(ss.str());
    chat_session_ptr new_session(new chat_session(io_service_, room_));
    acceptor_.async_accept(new_session->socket(),
        boost::bind(&chat_server::handle_accept, this, new_session,
          boost::asio::placeholders::error));
  }

  void handle_accept(chat_session_ptr session,
      const boost::system::error_code& error)
  {
    if (!error)
    {
      session->start();
      //if (room_.live_count() < 2) {
          chat_session_ptr new_session(new chat_session(io_service_, room_));
          acceptor_.async_accept(new_session->socket(),
              boost::bind(&chat_server::handle_accept, this, new_session,
                boost::asio::placeholders::error));
      //}
      //else {
        //acceptor_.close();
      //}
    }
  }
  virtual void session_release()
  {
      /* open again */
      /*
       * if (room_.live_count() < 2) {
        acceptor_.open(endpoint_.protocol());
        acceptor_.set_option(boost::asio::socket_base::reuse_address(true));
        acceptor_.bind(endpoint_);
        acceptor_.listen();

      }
      */
  }

  void close() {
      io_service_.post(boost::bind(&chat_server::do_close, this));
      room_.close();
  }
private:
  void do_close() {
      acceptor_.close();
  }
  boost::asio::io_service& io_service_;
  tcp::acceptor acceptor_;
  chat_room room_;
  tcp::endpoint endpoint_;
};

typedef boost::shared_ptr chat_server_ptr;
typedef std::list chat_server_list;

//----------------------------------------------------------------------

int main(int argc, char* argv[])
{
  try
  {
    if (argc < 2)
    {
      std::cerr << "Usage: chat_server <port> [<port> ...]\n";
      return 1;
    }

    boost::asio::io_service io_service;

    chat_server_list servers;
    for (int i = 1; i < argc; ++i)
    {
      using namespace std; // For atoi.
      tcp::endpoint endpoint(tcp::v4(), atoi(argv[i]));
      chat_server_ptr server(new chat_server(io_service, endpoint));
      servers.push_back(server);
    }

    boost::thread io_thread(boost::bind(&boost::asio::io_service::run,
&io_service));
    std::string line;
    while(getline(std::cin, line)) {
        if (line == "exit") {
            chat_server_list::iterator it = servers.begin();
            for ( ; it != servers.end(); ++it)
                (*it)->close();
            break;
        }
    }
    io_thread.join();
  }
  catch (std::exception& e)
  {
    std::cerr << "Exception: " << e.what() << "\n";
  }

  return 0;
}

step 1: start server
step 2: start client, connect to server
step 3: on server, type "exit"
result: server crashed
"This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information."

2010/3/8 OvermindDL1 :
...
On Sun, Mar 7, 2010 at 5:58 PM, l.jay Yuan  wrote:
...
in msvcrt.dll
But in the callstack at that point, what is your last code that is
called, better to just past the callstack here, or even better, post a
complete compilable example that demonstrates your problem.
Also, please do not top-post.
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