-/*\r
-* copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
-*\r
-* This file is part of CasparCG.\r
-*\r
-* CasparCG is free software: you can redistribute it and/or modify\r
-* it under the terms of the GNU General Public License as published by\r
-* the Free Software Foundation, either version 3 of the License, or\r
-* (at your option) any later version.\r
-*\r
-* CasparCG is distributed in the hope that it will be useful,\r
-* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
-* GNU General Public License for more details.\r
-\r
-* You should have received a copy of the GNU General Public License\r
-* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
-*\r
-*/\r
- \r
-// AsyncEventServer.cpp: implementation of the AsyncEventServer class.\r
-//\r
-//////////////////////////////////////////////////////////////////////\r
-\r
-#include "..\stdafx.h"\r
-\r
-#include "AsyncEventServer.h"\r
-\r
-#include "ProtocolStrategy.h"\r
-\r
-#include <algorithm>\r
-#include <array>\r
-#include <string>\r
-#include <set>\r
-#include <vector>\r
-\r
-#include <boost/asio.hpp>\r
-#include <boost/thread.hpp>\r
-#include <boost/lexical_cast.hpp>\r
-\r
-using boost::asio::ip::tcp;\r
-\r
-namespace caspar { namespace IO {\r
- \r
-bool ConvertWideCharToMultiByte(UINT codePage, const std::wstring& wideString, std::vector<char>& destBuffer)\r
-{\r
- int bytesWritten = 0;\r
- int multibyteBufferCapacity = WideCharToMultiByte(codePage, 0, wideString.c_str(), static_cast<int>(wideString.length()), 0, 0, NULL, NULL);\r
- if(multibyteBufferCapacity > 0) \r
- {\r
- destBuffer.resize(multibyteBufferCapacity);\r
- bytesWritten = WideCharToMultiByte(codePage, 0, wideString.c_str(), static_cast<int>(wideString.length()), destBuffer.data(), static_cast<int>(destBuffer.size()), NULL, NULL);\r
- }\r
- destBuffer.resize(bytesWritten);\r
- return (bytesWritten > 0);\r
-}\r
-\r
-bool ConvertMultiByteToWideChar(UINT codePage, char* pSource, int sourceLength, std::vector<wchar_t>& wideBuffer, int& countLeftovers)\r
-{\r
- if(codePage == CP_UTF8) {\r
- countLeftovers = 0;\r
- //check from the end of pSource for ev. uncompleted UTF-8 byte sequence\r
- if(pSource[sourceLength-1] & 0x80) {\r
- //The last byte is part of a multibyte sequence. If the sequence is not complete, we need to save the partial sequence\r
- int bytesToCheck = std::min<int>(4, sourceLength); //a sequence contains a maximum of 4 bytes\r
- int currentLeftoverIndex = sourceLength-1;\r
- for(; bytesToCheck > 0; --bytesToCheck, --currentLeftoverIndex) {\r
- ++countLeftovers;\r
- if(pSource[currentLeftoverIndex] & 0x80) {\r
- if(pSource[currentLeftoverIndex] & 0x40) { //The two high-bits are set, this is the "header"\r
- int expectedSequenceLength = 2;\r
- if(pSource[currentLeftoverIndex] & 0x20)\r
- ++expectedSequenceLength;\r
- if(pSource[currentLeftoverIndex] & 0x10)\r
- ++expectedSequenceLength;\r
-\r
- if(countLeftovers < expectedSequenceLength) {\r
- //The sequence is incomplete. Leave the leftovers to be interpreted with the next call\r
- break;\r
- }\r
- //The sequence is complete, there are no leftovers. \r
- //...OR...\r
- //error. Let the conversion-function take the hit.\r
- countLeftovers = 0;\r
- break;\r
- }\r
- }\r
- else {\r
- //error. Let the conversion-function take the hit.\r
- countLeftovers = 0;\r
- break;\r
- }\r
- }\r
- if(countLeftovers == 4) {\r
- //error. Let the conversion-function take the hit.\r
- countLeftovers = 0;\r
- }\r
- }\r
- }\r
-\r
- int charsWritten = 0;\r
- int sourceBytesToProcess = sourceLength-countLeftovers;\r
- int wideBufferCapacity = MultiByteToWideChar(codePage, 0, pSource, sourceBytesToProcess, NULL, NULL);\r
- if(wideBufferCapacity > 0) \r
- {\r
- wideBuffer.resize(wideBufferCapacity);\r
- charsWritten = MultiByteToWideChar(codePage, 0, pSource, sourceBytesToProcess, wideBuffer.data(), static_cast<int>(wideBuffer.size()));\r
- }\r
- //copy the leftovers to the front of the buffer\r
- if(countLeftovers > 0) {\r
- memcpy(pSource, &(pSource[sourceBytesToProcess]), countLeftovers);\r
- }\r
-\r
- wideBuffer.resize(charsWritten);\r
- return (charsWritten > 0);\r
-}\r
-\r
-class connection;\r
-\r
-typedef std::set<spl::shared_ptr<connection>> connection_set;\r
-\r
-class connection : public spl::enable_shared_from_this<connection>, public ClientInfo\r
-{ \r
- spl::shared_ptr<tcp::socket> socket_; \r
- const std::wstring name_;\r
-\r
- std::array<char, 8192> data_;\r
-\r
- std::vector<char> buffer_;\r
-\r
- const spl::shared_ptr<IProtocolStrategy> protocol_;\r
- spl::shared_ptr<connection_set> connection_set_;\r
-\r
-public:\r
- static spl::shared_ptr<connection> create(spl::shared_ptr<tcp::socket> socket, const ProtocolStrategyPtr& protocol, spl::shared_ptr<connection_set> connection_set)\r
- {\r
- spl::shared_ptr<connection> con(new connection(socket, protocol, connection_set));\r
- con->read_some();\r
- return con;\r
- }\r
-\r
- std::wstring print() const\r
- {\r
- return L"[" + name_ + L"]";\r
- }\r
- \r
- /* ClientInfo */\r
- \r
- virtual void Send(const std::wstring& data)\r
- {\r
- write_some(data);\r
- }\r
-\r
- virtual void Disconnect()\r
- {\r
- stop();\r
- }\r
- \r
- /**************/\r
- \r
- void stop()\r
- {\r
- connection_set_->erase(shared_from_this());\r
- socket_->shutdown(boost::asio::socket_base::shutdown_both);\r
- socket_->close();\r
- CASPAR_LOG(info) << print() << L" Disconnected.";\r
- }\r
-\r
-private:\r
- connection(const spl::shared_ptr<tcp::socket>& socket, const ProtocolStrategyPtr& protocol, const spl::shared_ptr<connection_set>& connection_set) \r
- : socket_(socket)\r
- , name_((socket_->is_open() ? u16(socket_->local_endpoint().address().to_string() + ":" + boost::lexical_cast<std::string>(socket_->local_endpoint().port())) : L"no-address"))\r
- , protocol_(protocol)\r
- , connection_set_(connection_set)\r
- {\r
- CASPAR_LOG(info) << print() << L" Connected.";\r
- }\r
- \r
- void handle_read(const boost::system::error_code& error, size_t bytes_transferred) \r
- { \r
- if(!error)\r
- {\r
- try\r
- {\r
- CASPAR_LOG(trace) << print() << L" Received: " << u16(std::string(data_.begin(), data_.begin() + bytes_transferred));\r
-\r
- buffer_.insert(buffer_.end(), data_.begin(), data_.begin() + bytes_transferred);\r
- \r
- std::vector<wchar_t> str;\r
- int left_overs;\r
- ConvertMultiByteToWideChar(protocol_->GetCodepage(), buffer_.data(), static_cast<int>(buffer_.size()), str, left_overs);\r
- buffer_.resize(left_overs);\r
- \r
- protocol_->Parse(str.data(), static_cast<int>(str.size()), shared_from_this());\r
- }\r
- catch(...)\r
- {\r
- CASPAR_LOG_CURRENT_EXCEPTION();\r
- }\r
- \r
- read_some();\r
- } \r
- else if (error != boost::asio::error::operation_aborted)\r
- stop(); \r
- else\r
- read_some();\r
- }\r
-\r
- void handle_write(const spl::shared_ptr<std::vector<char>>& data, const boost::system::error_code& error, size_t bytes_transferred)\r
- {\r
- if(!error) \r
- {\r
- if(data->size() < 512)\r
- CASPAR_LOG(trace) << print() << L" Sent: " << u16(std::string(data->begin(), data->end()));\r
- else\r
- CASPAR_LOG(trace) << print() << L" Sent more than 512 bytes.";\r
- }\r
- else if (error != boost::asio::error::operation_aborted) \r
- stop(); \r
- }\r
-\r
- void read_some()\r
- {\r
- socket_->async_read_some(boost::asio::buffer(data_.data(), data_.size()), std::bind(&connection::handle_read, shared_from_this(), std::placeholders::_1, std::placeholders::_2));\r
- }\r
- \r
- void write_some(const std::wstring& data)\r
- {\r
- spl::shared_ptr<std::vector<char>> str;\r
- ConvertWideCharToMultiByte(protocol_->GetCodepage(), data, *str);\r
-\r
- socket_->async_write_some(boost::asio::buffer(*str), std::bind(&connection::handle_write, shared_from_this(), str, std::placeholders::_1, std::placeholders::_2));\r
- }\r
-};\r
-\r
-struct AsyncEventServer::implementation\r
-{\r
- boost::asio::io_service service_;\r
- tcp::acceptor acceptor_;\r
- spl::shared_ptr<IProtocolStrategy> protocol_;\r
- spl::shared_ptr<connection_set> connection_set_;\r
- boost::thread thread_;\r
-\r
- implementation(const spl::shared_ptr<IProtocolStrategy>& protocol, unsigned short port)\r
- : acceptor_(service_, tcp::endpoint(tcp::v4(), port))\r
- , protocol_(protocol)\r
- , thread_(std::bind(&boost::asio::io_service::run, &service_))\r
- {\r
- start_accept();\r
- }\r
-\r
- ~implementation()\r
- {\r
- acceptor_.close();\r
-\r
- service_.post([=]\r
- {\r
- BOOST_FOREACH(auto& connection, *connection_set_)\r
- connection->stop();\r
- });\r
-\r
- thread_.join();\r
- }\r
- \r
- void start_accept() \r
- {\r
- spl::shared_ptr<tcp::socket> socket(new tcp::socket(service_));\r
- acceptor_.async_accept(*socket, std::bind(&implementation::handle_accept, this, socket, std::placeholders::_1));\r
- }\r
-\r
- void handle_accept(const spl::shared_ptr<tcp::socket>& socket, const boost::system::error_code& error) \r
- {\r
- if (!acceptor_.is_open())\r
- return;\r
- \r
- if (!error) \r
- connection_set_->insert(connection::create(socket, protocol_, connection_set_));\r
-\r
- start_accept();\r
- }\r
-};\r
-\r
-AsyncEventServer::AsyncEventServer(const spl::shared_ptr<IProtocolStrategy>& protocol, unsigned short port) : impl_(new implementation(protocol, port)){}\r
-AsyncEventServer::~AsyncEventServer(){}\r
-}}
\ No newline at end of file
+/*
+* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
+*
+* This file is part of CasparCG (www.casparcg.com).
+*
+* CasparCG is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* CasparCG is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
+*
+* Author: Robert Nagy, ronag89@gmail.com
+*/
+
+#include "../StdAfx.h"
+
+#include "AsyncEventServer.h"
+
+#include <algorithm>
+#include <array>
+#include <string>
+#include <set>
+#include <memory>
+#include <functional>
+
+#include <boost/asio.hpp>
+#include <boost/lexical_cast.hpp>
+
+#include <tbb/mutex.h>
+#include <tbb/concurrent_hash_map.h>
+#include <tbb/concurrent_queue.h>
+
+using boost::asio::ip::tcp;
+
+namespace caspar { namespace IO {
+
+class connection;
+
+typedef std::set<spl::shared_ptr<connection>> connection_set;
+
+class connection : public spl::enable_shared_from_this<connection>
+{
+ typedef tbb::concurrent_hash_map<std::wstring, std::shared_ptr<void>> lifecycle_map_type;
+ typedef tbb::concurrent_queue<std::string> send_queue;
+
+ const spl::shared_ptr<tcp::socket> socket_;
+ std::shared_ptr<boost::asio::io_service> service_;
+ const std::wstring listen_port_;
+ const spl::shared_ptr<connection_set> connection_set_;
+ protocol_strategy_factory<char>::ptr protocol_factory_;
+ std::shared_ptr<protocol_strategy<char>> protocol_;
+
+ std::array<char, 32768> data_;
+ lifecycle_map_type lifecycle_bound_objects_;
+ send_queue send_queue_;
+ bool is_writing_;
+
+ class connection_holder : public client_connection<char>
+ {
+ std::weak_ptr<connection> connection_;
+ public:
+ explicit connection_holder(std::weak_ptr<connection> conn) : connection_(std::move(conn))
+ {}
+
+ void send(std::basic_string<char>&& data) override
+ {
+ auto conn = connection_.lock();
+
+ if (conn)
+ conn->send(std::move(data));
+ }
+
+ void disconnect() override
+ {
+ auto conn = connection_.lock();
+
+ if (conn)
+ conn->disconnect();
+ }
+
+ std::wstring address() const override
+ {
+ auto conn = connection_.lock();
+
+ if (conn)
+ return conn->ipv4_address();
+ else
+ return L"[destroyed-connection]";
+ }
+
+ void add_lifecycle_bound_object(const std::wstring& key, const std::shared_ptr<void>& lifecycle_bound) override
+ {
+ auto conn = connection_.lock();
+
+ if (conn)
+ return conn->add_lifecycle_bound_object(key, lifecycle_bound);
+ }
+
+ std::shared_ptr<void> remove_lifecycle_bound_object(const std::wstring& key) override
+ {
+ auto conn = connection_.lock();
+
+ if (conn)
+ return conn->remove_lifecycle_bound_object(key);
+ else
+ return std::shared_ptr<void>();
+ }
+ };
+
+public:
+ static spl::shared_ptr<connection> create(std::shared_ptr<boost::asio::io_service> service, spl::shared_ptr<tcp::socket> socket, const protocol_strategy_factory<char>::ptr& protocol, spl::shared_ptr<connection_set> connection_set)
+ {
+ spl::shared_ptr<connection> con(new connection(std::move(service), std::move(socket), std::move(protocol), std::move(connection_set)));
+ con->init();
+ con->read_some();
+ return con;
+ }
+
+ void init()
+ {
+ protocol_ = protocol_factory_->create(spl::make_shared<connection_holder>(shared_from_this()));
+ }
+
+ ~connection()
+ {
+ CASPAR_LOG(debug) << print() << L" connection destroyed.";
+ }
+
+ std::wstring print() const
+ {
+ return L"async_event_server[:" + listen_port_ + L"]";
+ }
+
+ std::wstring address() const
+ {
+ return u16(socket_->local_endpoint().address().to_string());
+ }
+
+ std::wstring ipv4_address() const
+ {
+ return socket_->is_open() ? u16(socket_->remote_endpoint().address().to_string()) : L"no-address";
+ }
+
+ void send(std::string&& data)
+ {
+ send_queue_.push(std::move(data));
+ auto self = shared_from_this();
+ service_->dispatch([=] { self->do_write(); });
+ }
+
+ void disconnect()
+ {
+ auto self = shared_from_this();
+ service_->dispatch([=] { self->stop(); });
+ }
+
+ void add_lifecycle_bound_object(const std::wstring& key, const std::shared_ptr<void>& lifecycle_bound)
+ {
+ //thread-safe tbb_concurrent_hash_map
+ lifecycle_bound_objects_.insert(std::pair<std::wstring, std::shared_ptr<void>>(key, lifecycle_bound));
+ }
+ std::shared_ptr<void> remove_lifecycle_bound_object(const std::wstring& key)
+ {
+ //thread-safe tbb_concurrent_hash_map
+ lifecycle_map_type::const_accessor acc;
+ if(lifecycle_bound_objects_.find(acc, key))
+ {
+ auto result = acc->second;
+ lifecycle_bound_objects_.erase(acc);
+ return result;
+ }
+ return std::shared_ptr<void>();
+ }
+
+private:
+ void do_write() //always called from the asio-service-thread
+ {
+ if(!is_writing_)
+ {
+ std::string data;
+ if(send_queue_.try_pop(data))
+ {
+ write_some(std::move(data));
+ }
+ }
+ }
+
+ void stop() //always called from the asio-service-thread
+ {
+ connection_set_->erase(shared_from_this());
+
+ CASPAR_LOG(info) << print() << L" Client " << ipv4_address() << L" disconnected (" << connection_set_->size() << L" connections).";
+
+ try
+ {
+ socket_->cancel();
+ socket_->close();
+ }
+ catch(...)
+ {
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ }
+ }
+
+ connection(const std::shared_ptr<boost::asio::io_service>& service, const spl::shared_ptr<tcp::socket>& socket, const protocol_strategy_factory<char>::ptr& protocol_factory, const spl::shared_ptr<connection_set>& connection_set)
+ : socket_(socket)
+ , service_(service)
+ , listen_port_(socket_->is_open() ? boost::lexical_cast<std::wstring>(socket_->local_endpoint().port()) : L"no-port")
+ , connection_set_(connection_set)
+ , protocol_factory_(protocol_factory)
+ , is_writing_(false)
+ {
+ CASPAR_LOG(info) << print() << L" Accepted connection from " << ipv4_address() << L" (" << (connection_set_->size() + 1) << L" connections).";
+ }
+
+ void handle_read(const boost::system::error_code& error, size_t bytes_transferred) //always called from the asio-service-thread
+ {
+ if(!error)
+ {
+ try
+ {
+ std::string data(data_.begin(), data_.begin() + bytes_transferred);
+
+ protocol_->parse(data);
+ }
+ catch(...)
+ {
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ }
+
+ read_some();
+ }
+ else if (error != boost::asio::error::operation_aborted)
+ stop();
+ }
+
+ void handle_write(const spl::shared_ptr<std::string>& str, const boost::system::error_code& error, size_t bytes_transferred) //always called from the asio-service-thread
+ {
+ if(!error)
+ {
+ if(bytes_transferred != str->size())
+ {
+ str->assign(str->substr(bytes_transferred));
+ socket_->async_write_some(boost::asio::buffer(str->data(), str->size()), std::bind(&connection::handle_write, shared_from_this(), str, std::placeholders::_1, std::placeholders::_2));
+ }
+ else
+ {
+ is_writing_ = false;
+ do_write();
+ }
+ }
+ else if (error != boost::asio::error::operation_aborted && socket_->is_open())
+ stop();
+ }
+
+ void read_some() //always called from the asio-service-thread
+ {
+ socket_->async_read_some(boost::asio::buffer(data_.data(), data_.size()), std::bind(&connection::handle_read, shared_from_this(), std::placeholders::_1, std::placeholders::_2));
+ }
+
+ void write_some(std::string&& data) //always called from the asio-service-thread
+ {
+ is_writing_ = true;
+ auto str = spl::make_shared<std::string>(std::move(data));
+ socket_->async_write_some(boost::asio::buffer(str->data(), str->size()), std::bind(&connection::handle_write, shared_from_this(), str, std::placeholders::_1, std::placeholders::_2));
+ }
+
+ friend struct AsyncEventServer::implementation;
+};
+
+struct AsyncEventServer::implementation : public spl::enable_shared_from_this<implementation>
+{
+ std::shared_ptr<boost::asio::io_service> service_;
+ tcp::acceptor acceptor_;
+ protocol_strategy_factory<char>::ptr protocol_factory_;
+ spl::shared_ptr<connection_set> connection_set_;
+ std::vector<lifecycle_factory_t> lifecycle_factories_;
+ tbb::mutex mutex_;
+
+ implementation(std::shared_ptr<boost::asio::io_service> service, const protocol_strategy_factory<char>::ptr& protocol, unsigned short port)
+ : service_(std::move(service))
+ , acceptor_(*service_, tcp::endpoint(tcp::v4(), port))
+ , protocol_factory_(protocol)
+ {
+ }
+
+ void stop()
+ {
+ try
+ {
+ acceptor_.cancel();
+ acceptor_.close();
+ }
+ catch (...)
+ {
+ CASPAR_LOG_CURRENT_EXCEPTION();
+ }
+ }
+
+ ~implementation()
+ {
+ auto conns_set = connection_set_;
+
+ service_->post([conns_set]
+ {
+ auto connections = *conns_set;
+ for (auto& connection : connections)
+ connection->stop();
+ });
+ }
+
+ void start_accept()
+ {
+ spl::shared_ptr<tcp::socket> socket(new tcp::socket(*service_));
+ acceptor_.async_accept(*socket, std::bind(&implementation::handle_accept, shared_from_this(), socket, std::placeholders::_1));
+ }
+
+ void handle_accept(const spl::shared_ptr<tcp::socket>& socket, const boost::system::error_code& error)
+ {
+ if (!acceptor_.is_open())
+ return;
+
+ if (!error)
+ {
+ boost::system::error_code ec;
+ socket->set_option(boost::asio::socket_base::keep_alive(true), ec);
+
+ if (ec)
+ CASPAR_LOG(warning) << print() << L" Failed to enable TCP keep-alive on socket";
+
+ auto conn = connection::create(service_, socket, protocol_factory_, connection_set_);
+ connection_set_->insert(conn);
+
+ for (auto& lifecycle_factory : lifecycle_factories_)
+ {
+ auto lifecycle_bound = lifecycle_factory(u8(conn->ipv4_address()));
+ conn->add_lifecycle_bound_object(lifecycle_bound.first, lifecycle_bound.second);
+ }
+ }
+ start_accept();
+ }
+
+ std::wstring print() const
+ {
+ return L"async_event_server[:" + boost::lexical_cast<std::wstring>(acceptor_.local_endpoint().port()) + L"]";
+ }
+
+ void add_client_lifecycle_object_factory(const lifecycle_factory_t& factory)
+ {
+ auto self = shared_from_this();
+ service_->post([=]{ self->lifecycle_factories_.push_back(factory); });
+ }
+};
+
+AsyncEventServer::AsyncEventServer(
+ std::shared_ptr<boost::asio::io_service> service, const protocol_strategy_factory<char>::ptr& protocol, unsigned short port)
+ : impl_(new implementation(std::move(service), protocol, port))
+{
+ impl_->start_accept();
+}
+
+AsyncEventServer::~AsyncEventServer()
+{
+ impl_->stop();
+}
+
+void AsyncEventServer::add_client_lifecycle_object_factory(const lifecycle_factory_t& factory) { impl_->add_client_lifecycle_object_factory(factory); }
+
+}}
projects / casparcg / blobdiff