forked from townforge/townforge
072102cfd2
All code which was using ip and port now uses a new IPv4 object, subclass of a new network_address class. This will allow easy addition of I2P addresses later (and also IPv6, etc). Both old style and new style peer lists are now sent in the P2P protocol, which is inefficient but allows peers using both codebases to talk to each other. This will be removed in the future. No other subclasses than IPv4 exist yet.
608 lines
18 KiB
C++
608 lines
18 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#pragma comment(lib, "Ws2_32.lib")
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "net"
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namespace epee
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{
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namespace net_utils
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{
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template<class TProtocol>
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cp_server_impl<TProtocol>::cp_server_impl():
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m_port(0), m_stop(false),
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m_worker_thread_counter(0), m_listen_socket(INVALID_SOCKET)
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{
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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cp_server_impl<TProtocol>::~cp_server_impl()
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{
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deinit_server();
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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bool cp_server_impl<TProtocol>::init_server(int port_no)
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{
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m_port = port_no;
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WSADATA wsad = {0};
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int err = ::WSAStartup(MAKEWORD(2,2), &wsad);
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if ( err != 0 || LOBYTE( wsad.wVersion ) != 2 || HIBYTE( wsad.wVersion ) != 2 )
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{
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LOG_ERROR("Could not find a usable WinSock DLL, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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m_initialized = true;
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m_listen_socket = ::WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
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if(INVALID_SOCKET == m_listen_socket)
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{
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err = ::WSAGetLastError();
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LOG_ERROR("Failed to create socket, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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int opt = 1;
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err = setsockopt (m_listen_socket, SOL_SOCKET,SO_REUSEADDR, reinterpret_cast<char*>(&opt), sizeof(int));
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if(SOCKET_ERROR == err )
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{
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err = ::WSAGetLastError();
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LOG_PRINT("Failed to setsockopt(SO_REUSEADDR), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_1);
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deinit_server();
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return false;
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}
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sockaddr_in adr = {0};
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adr.sin_family = AF_INET;
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adr.sin_addr.s_addr = htonl(INADDR_ANY);
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adr.sin_port = (u_short)htons(m_port);
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//binding
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err = bind(m_listen_socket, (const sockaddr*)&adr, sizeof(adr ));
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if(SOCKET_ERROR == err )
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{
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err = ::WSAGetLastError();
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LOG_PRINT("Failed to Bind, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_1);
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deinit_server();
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return false;
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}
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m_completion_port = ::CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0);
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if(INVALID_HANDLE_VALUE == m_completion_port)
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{
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err = ::WSAGetLastError();
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LOG_PRINT("Failed to CreateIoCompletionPort, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_1);
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deinit_server();
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return false;
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}
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return true;
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}
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//-------------------------------------------------------------
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//-------------------------------------------------------------
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static int CALLBACK CPConditionFunc(
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IN LPWSABUF lpCallerId,
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IN LPWSABUF lpCallerData,
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IN OUT LPQOS lpSQOS,
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IN OUT LPQOS lpGQOS,
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IN LPWSABUF lpCalleeId,
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OUT LPWSABUF lpCalleeData,
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OUT GROUP FAR *g,
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IN DWORD_PTR dwCallbackData
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)
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{
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/*cp_server_impl* pthis = (cp_server_impl*)dwCallbackData;
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if(!pthis)
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return CF_REJECT;*/
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/*if(pthis->get_active_connections_num()>=FD_SETSIZE-1)
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{
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LOG_PRINT("Maximum connections count overfull.", LOG_LEVEL_2);
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return CF_REJECT;
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}*/
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return CF_ACCEPT;
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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size_t cp_server_impl<TProtocol>::get_active_connections_num()
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{
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return m_connections.size();
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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unsigned CALLBACK cp_server_impl<TProtocol>::worker_thread(void* param)
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{
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if(!param)
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return 0;
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cp_server_impl<TProtocol>* pthis = (cp_server_impl<TProtocol>*)param;
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pthis->worker_thread_member();
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return 1;
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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bool cp_server_impl<TProtocol>::worker_thread_member()
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{
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LOG_PRINT("Worker thread STARTED", LOG_LEVEL_1);
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bool stop_handling = false;
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while(!stop_handling)
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{
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PROFILE_FUNC("[worker_thread]Worker Loop");
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DWORD bytes_transfered = 0;
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connection<TProtocol>* pconnection = 0;
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io_data_base* pio_data = 0;
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{
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PROFILE_FUNC("[worker_thread]GetQueuedCompletionStatus");
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BOOL res = ::GetQueuedCompletionStatus (m_completion_port, &bytes_transfered , (PULONG_PTR)&pconnection, (LPOVERLAPPED *)&pio_data, INFINITE);
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if (res == 0)
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{
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// check return code for error
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int err = GetLastError();
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LOG_PRINT("GetQueuedCompletionStatus failed with error " << err << " " << log_space::get_win32_err_descr(err), LOG_LEVEL_1);
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if(pio_data)
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::InterlockedExchange(&pio_data->m_is_in_use, 0);
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continue;
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}
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}
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if(pio_data)
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::InterlockedExchange(&pio_data->m_is_in_use, 0);
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if(!bytes_transfered && !pconnection && !pio_data)
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{
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//signal to stop
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break;
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}
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if(!pconnection || !pio_data)
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{
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LOG_PRINT("BIG FAIL: pconnection or pio_data is empty: pconnection=" << pconnection << " pio_data=" << pio_data, LOG_LEVEL_0);
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break;
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}
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if(::InterlockedCompareExchange(&pconnection->m_connection_shutwoned, 0, 0))
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{
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LOG_ERROR("InterlockedCompareExchange(&pconnection->m_connection_shutwoned, 0, 0)");
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//DebugBreak();
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}
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if(pio_data->m_op_type == op_type_stop)
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{
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if(!pconnection)
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{
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LOG_ERROR("op_type=op_type_stop, but pconnection is empty!!!");
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continue;
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}
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shutdown_connection(pconnection);
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continue;//
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}
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else if(pio_data->m_op_type == op_type_send)
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{
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continue;
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//do nothing, just queuing request
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}else if(pio_data->m_op_type == op_type_recv)
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{
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PROFILE_FUNC("[worker_thread]m_tprotocol_handler.handle_recv");
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if(bytes_transfered)
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{
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bool res = pconnection->m_tprotocol_handler.handle_recv(pio_data->Buffer, bytes_transfered);
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if(!res)
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pconnection->query_shutdown();
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}
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else
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{
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pconnection->query_shutdown();
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continue;
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}
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}
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//preparing new request,
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{
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PROFILE_FUNC("[worker_thread]RECV Request small loop");
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int res = 0;
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while(true)
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{
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LOG_PRINT("Prepearing data for WSARecv....", LOG_LEVEL_3);
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ZeroMemory(&pio_data->m_overlapped, sizeof(OVERLAPPED));
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pio_data->DataBuf.len = pio_data->TotalBuffBytes;
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pio_data->DataBuf.buf = pio_data->Buffer;
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pio_data->m_op_type = op_type_recv;
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//calling WSARecv() and go to completion waiting
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DWORD bytes_recvd = 0;
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DWORD flags = 0;
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LOG_PRINT("Calling WSARecv....", LOG_LEVEL_3);
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::InterlockedExchange(&pio_data->m_is_in_use, 1);
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res = WSARecv(pconnection->m_sock, &(pio_data->DataBuf), 1, &bytes_recvd , &flags, &(pio_data->m_overlapped), NULL);
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if(res == SOCKET_ERROR )
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{
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int err = ::WSAGetLastError();
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if(WSA_IO_PENDING == err )
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{//go pending, ok
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LOG_PRINT("WSARecv return WSA_IO_PENDING", LOG_LEVEL_3);
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break;
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}
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LOG_ERROR("BIG FAIL: WSARecv error code not correct, res=" << res << " last_err=" << err);
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::InterlockedExchange(&pio_data->m_is_in_use, 0);
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pconnection->query_shutdown();
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break;
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}
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break;
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/*else if(0 == res)
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{
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if(!bytes_recvd)
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{
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::InterlockedExchange(&pio_data->m_is_in_use, 0);
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LOG_PRINT("WSARecv return 0, bytes_recvd=0, graceful close.", LOG_LEVEL_3);
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int err = ::WSAGetLastError();
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//LOG_ERROR("BIG FAIL: WSARecv error code not correct, res=" << res << " last_err=" << err);
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//pconnection->query_shutdown();
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break;
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}else
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{
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LOG_PRINT("WSARecv return immediatily 0, bytes_recvd=" << bytes_recvd, LOG_LEVEL_3);
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//pconnection->m_tprotocol_handler.handle_recv(pio_data->Buffer, bytes_recvd);
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}
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}*/
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}
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}
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}
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LOG_PRINT("Worker thread STOPED", LOG_LEVEL_1);
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::InterlockedDecrement(&m_worker_thread_counter);
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return true;
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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bool cp_server_impl<TProtocol>::shutdown_connection(connection<TProtocol>* pconn)
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{
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PROFILE_FUNC("[shutdown_connection]");
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if(!pconn)
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{
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LOG_ERROR("Attempt to remove null pptr connection!");
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return false;
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}
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else
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{
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LOG_PRINT("Shutting down connection ("<< pconn << ")", LOG_LEVEL_3);
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}
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m_connections_lock.lock();
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connections_container::iterator it = m_connections.find(pconn->m_sock);
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m_connections_lock.unlock();
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if(it == m_connections.end())
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{
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LOG_ERROR("Failed to find closing socket=" << pconn->m_sock);
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return false;
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}
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SOCKET sock = it->second->m_sock;
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{
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PROFILE_FUNC("[shutdown_connection] shutdown, close");
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::shutdown(it->second->m_sock, SD_SEND );
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}
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size_t close_sock_wait_count = 0;
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{
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LOG_PRINT("Entered to 'in_use wait zone'", LOG_LEVEL_3);
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PROFILE_FUNC("[shutdown_connection] wait for in_use");
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while(::InterlockedCompareExchange(&it->second->m_precv_data->m_is_in_use, 1, 1))
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{
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Sleep(100);
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close_sock_wait_count++;
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}
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LOG_PRINT("First step to 'in_use wait zone'", LOG_LEVEL_3);
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while(::InterlockedCompareExchange(&it->second->m_psend_data->m_is_in_use, 1, 1))
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{
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Sleep(100);
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close_sock_wait_count++;
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}
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LOG_PRINT("Leaved 'in_use wait zone'", LOG_LEVEL_3);
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}
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::closesocket(it->second->m_sock);
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::InterlockedExchange(&it->second->m_connection_shutwoned, 1);
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m_connections_lock.lock();
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m_connections.erase(it);
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m_connections_lock.unlock();
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LOG_PRINT("Socked " << sock << " closed, wait_count=" << close_sock_wait_count, LOG_LEVEL_2);
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return true;
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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bool cp_server_impl<TProtocol>::run_server(int threads_count = 0)
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{
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int err = listen(m_listen_socket, 100);
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if(SOCKET_ERROR == err )
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{
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err = ::WSAGetLastError();
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LOG_ERROR("Failed to listen, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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if(!threads_count)
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{
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SYSTEM_INFO si = {0};
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::GetSystemInfo(&si);
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threads_count = si.dwNumberOfProcessors + 2;
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}
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for(int i = 0; i != threads_count; i++)
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{
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boost::thread(boost::bind(&cp_server_impl::worker_thread_member, this));
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//HANDLE h_thread = threads_helper::create_thread(worker_thread, this);
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InterlockedIncrement(&m_worker_thread_counter);
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//::CloseHandle(h_thread);
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}
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LOG_PRINT("Numbers of worker threads started: " << threads_count, LOG_LEVEL_1);
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m_stop = false;
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while(!m_stop)
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{
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PROFILE_FUNC("[run_server] main_loop");
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TIMEVAL tv = {0};
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tv.tv_sec = 0;
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tv.tv_usec = 100;
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fd_set sock_set;
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sock_set.fd_count = 1;
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sock_set.fd_array[0] = m_listen_socket;
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int select_res = 0;
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{
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PROFILE_FUNC("[run_server] select");
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select_res = select(0, &sock_set, &sock_set, NULL, &tv);
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}
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if(SOCKET_ERROR == select_res)
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{
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err = ::WSAGetLastError();
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LOG_ERROR("Failed to select, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
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return false;
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}
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if(!select_res)
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{
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on_net_idle();
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continue;
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}
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else
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{
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sockaddr_in adr_from = {0};
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int adr_len = sizeof(adr_from);
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SOCKET new_sock = INVALID_SOCKET;
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{
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PROFILE_FUNC("[run_server] WSAAccept");
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new_sock = ::WSAAccept(m_listen_socket, (sockaddr *)&adr_from, &adr_len, CPConditionFunc, (DWORD_PTR)this);
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}
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if(INVALID_SOCKET == new_sock)
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{
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if(m_stop)
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break;
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int err = ::WSAGetLastError();
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LOG_PRINT("Failed to WSAAccept, err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_2);
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continue;
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}
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LOG_PRINT("Accepted connection (new socket=" << new_sock << ")", LOG_LEVEL_2);
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{
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PROFILE_FUNC("[run_server] Add new connection");
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add_new_connection(new_sock, adr_from.sin_addr.s_addr, adr_from.sin_port);
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}
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}
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}
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LOG_PRINT("Closing connections("<< m_connections.size() << ") and waiting...", LOG_LEVEL_2);
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m_connections_lock.lock();
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for(connections_container::iterator it = m_connections.begin(); it != m_connections.end(); it++)
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{
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::shutdown(it->second->m_sock, SD_BOTH);
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::closesocket(it->second->m_sock);
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}
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m_connections_lock.unlock();
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size_t wait_count = 0;
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while(m_connections.size() && wait_count < 100)
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{
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::Sleep(100);
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wait_count++;
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}
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LOG_PRINT("Connections closed OK (wait_count=" << wait_count << ")", LOG_LEVEL_2);
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LOG_PRINT("Stopping worker threads("<< m_worker_thread_counter << ").", LOG_LEVEL_2);
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for(int i = 0; i<m_worker_thread_counter; i++)
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{
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::PostQueuedCompletionStatus(m_completion_port, 0, 0, 0);
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}
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wait_count = 0;
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while(InterlockedCompareExchange(&m_worker_thread_counter, 0, 0) && wait_count < 100)
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{
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Sleep(100);
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wait_count++;
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}
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LOG_PRINT("Net Server STOPPED, wait_count = " << wait_count, LOG_LEVEL_1);
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return true;
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}
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//-------------------------------------------------------------
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template<class TProtocol>
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bool cp_server_impl<TProtocol>::add_new_connection(SOCKET new_sock, const network_address &address_from)
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{
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PROFILE_FUNC("[add_new_connection]");
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LOG_PRINT("Add new connection zone: entering lock", LOG_LEVEL_3);
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m_connections_lock.lock();
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boost::shared_ptr<connection<TProtocol> > ptr;
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ptr.reset(new connection<TProtocol>(m_config));
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connection<TProtocol>& conn = *ptr.get();
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m_connections[new_sock] = ptr;
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LOG_PRINT("Add new connection zone: leaving lock", LOG_LEVEL_3);
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m_connections_lock.unlock();
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conn.init_buffers();
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conn.m_sock = new_sock;
|
|
conn.context.m_remote_address = address_from;
|
|
conn.m_completion_port = m_completion_port;
|
|
{
|
|
PROFILE_FUNC("[add_new_connection] CreateIoCompletionPort");
|
|
::CreateIoCompletionPort((HANDLE)new_sock, m_completion_port, (ULONG_PTR)&conn, 0);
|
|
}
|
|
|
|
//if(NULL == ::CreateIoCompletionPort((HANDLE)new_sock, m_completion_port, (ULONG_PTR)&conn, 0))
|
|
//{
|
|
// int err = ::GetLastError();
|
|
// LOG_PRINT("Failed to CreateIoCompletionPort(associate socket and completion port), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"", LOG_LEVEL_2);
|
|
// return false;
|
|
//}
|
|
|
|
conn.m_tprotocol_handler.after_init_connection();
|
|
{
|
|
PROFILE_FUNC("[add_new_connection] starting loop");
|
|
int res = 0;
|
|
while(true)//res!=SOCKET_ERROR)
|
|
{
|
|
PROFILE_FUNC("[add_new_connection] in loop time");
|
|
conn.m_precv_data->TotalBuffBytes = LEVIN_DEFAULT_DATA_BUFF_SIZE;
|
|
ZeroMemory(&conn.m_precv_data->m_overlapped, sizeof(OVERLAPPED));
|
|
conn.m_precv_data->DataBuf.len = conn.m_precv_data->TotalBuffBytes;
|
|
conn.m_precv_data->DataBuf.buf = conn.m_precv_data->Buffer;
|
|
conn.m_precv_data->m_op_type = op_type_recv;
|
|
InterlockedExchange(&conn.m_precv_data->m_is_in_use, 1);
|
|
DWORD bytes_recvd = 0;
|
|
DWORD flags = 0;
|
|
|
|
::InterlockedExchange(&conn.m_precv_data->m_is_in_use, 1);
|
|
{
|
|
PROFILE_FUNC("[add_new_connection] ::WSARecv");
|
|
res = ::WSARecv(conn.m_sock, &(conn.m_precv_data->DataBuf), 1, &bytes_recvd , &flags, &(conn.m_precv_data->m_overlapped), NULL);
|
|
}
|
|
if(res == SOCKET_ERROR )
|
|
{
|
|
int err = ::WSAGetLastError();
|
|
if(WSA_IO_PENDING == err )
|
|
{
|
|
break;
|
|
}
|
|
LOG_ERROR("BIG FAIL: WSARecv error code not correct, res=" << res << " last_err=" << err << " " << log_space::get_win32_err_descr(err));
|
|
::InterlockedExchange(&conn.m_precv_data->m_is_in_use, 0);
|
|
conn.query_shutdown();
|
|
//shutdown_connection(&conn);
|
|
break;
|
|
}
|
|
|
|
|
|
break;
|
|
/*else if(0 == res)
|
|
{
|
|
if(!bytes_recvd)
|
|
{
|
|
PROFILE_FUNC("[add_new_connection] shutdown_connection");
|
|
::InterlockedExchange(&conn.m_precv_data->m_is_in_use, 0);
|
|
conn.query_shutdown();
|
|
//shutdown_connection(&conn);
|
|
break;
|
|
}else
|
|
{
|
|
PROFILE_FUNC("[add_new_connection] handle_recv");
|
|
}
|
|
}*/
|
|
}
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
}
|
|
//-------------------------------------------------------------
|
|
template<class TProtocol>
|
|
bool cp_server_impl<TProtocol>::deinit_server()
|
|
{
|
|
if(!m_initialized)
|
|
return true;
|
|
|
|
if(INVALID_SOCKET != m_listen_socket)
|
|
{
|
|
shutdown(m_listen_socket, SD_BOTH);
|
|
int res = closesocket(m_listen_socket);
|
|
if(SOCKET_ERROR == res)
|
|
{
|
|
int err = ::WSAGetLastError();
|
|
LOG_ERROR("Failed to closesocket(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
}
|
|
m_listen_socket = INVALID_SOCKET;
|
|
}
|
|
|
|
int res = ::WSACleanup();
|
|
if(SOCKET_ERROR == res)
|
|
{
|
|
int err = ::WSAGetLastError();
|
|
LOG_ERROR("Failed to WSACleanup(), err = " << err << " \"" << socket_errors::get_socket_error_text(err) <<"\"");
|
|
}
|
|
m_initialized = false;
|
|
|
|
return true;
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
template<class TProtocol>
|
|
bool cp_server_impl<TProtocol>::send_stop_signal()
|
|
{
|
|
::InterlockedExchange(&m_stop, 1);
|
|
return true;
|
|
}
|
|
//-------------------------------------------------------------
|
|
template<class TProtocol>
|
|
bool cp_server_impl<TProtocol>::is_stop_signal()
|
|
{
|
|
return m_stop?true:false;
|
|
}
|
|
//-------------------------------------------------------------
|
|
}
|
|
}
|