TCPSocketAsyncMsg.hGo to the documentation of this file.00001 /* 00002 * Copyright (c) 2000-2003 Barak Weichselbaum <barak@komodia.com> 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 00014 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 00015 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00016 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00017 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 00018 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00019 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00020 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00021 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00022 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00023 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00024 * SUCH DAMAGE. 00025 * 00026 * Contact info: 00027 * ------------- 00028 * 00029 * Site: http://www.komodia.com 00030 * Main contact: barak@komodia.com 00031 * For custom projects, 00032 * consulting, or other 00033 * paid services: sales@komodia.com 00034 */ 00035 00036 #if !defined(AFX_TCPSOCKETASYNCMSG_H__F82FC905_951A_4FBE_ADE3_CC462DCC0EB3__INCLUDED_) 00037 #define AFX_TCPSOCKETASYNCMSG_H__F82FC905_951A_4FBE_ADE3_CC462DCC0EB3__INCLUDED_ 00038 00039 #if _MSC_VER > 1000 00040 #pragma once 00041 #endif // _MSC_VER > 1000 00042 00043 #include "TCPSocketAsync.h" 00044 00045 #include <deque> 00046 00047 KOMODIA_NAMESPACE_START 00048 00049 class CGenericEvent; 00050 00051 class CTCPSocketAsyncMsg : public CTCPSocketAsync 00052 { 00053 public: 00054 //Receive a message 00055 //Returns number of bytes received or error code 00056 //iMoreMessages - If more messages exist it will be 1 00057 // 0 for no more messages 00058 // -size for buffer too small to accept message so abs() will give the size 00059 virtual int ReceiveMsg(char* pData, 00060 int iSize, 00061 int& iMoreMessages); 00062 00063 //Send a message 00064 //Returns number of bytes sent, or -1 for error 00065 //-2 size mismatch 00066 virtual int SendMsg(const char* pData, 00067 int iSize); 00068 00069 //Send the message but abort if event is set 00070 //Same error codes as the normal SendMsg 00071 //-3 for user abort 00072 virtual int SendMsg(const char* pData, 00073 int iSize, 00074 CGenericEvent* pStopEvent); 00075 00076 //Ctor and Dtor 00077 CTCPSocketAsyncMsg(); 00078 virtual ~CTCPSocketAsyncMsg(); 00079 private: 00080 //Our deque of data we cache 00081 typedef std::deque<char> CachedDeque; 00082 private: 00083 //No Ctor 00084 CTCPSocketAsyncMsg(const CTCPSocketAsyncMsg& rSocket); 00085 00086 //No assigment operator 00087 CTCPSocketAsyncMsg& operator=(const CTCPSocketAsyncMsg& rSocket); 00088 00089 //Check if it's possible to extract a message, 0 for no, size for message size 00090 int CanExtractMsg(const CachedDeque& rData)const; 00091 00092 //Extract a message, 0 for no, size for message size or -size for buffer too small 00093 int ExtractMsg(CachedDeque& rData, 00094 char* pData, 00095 int iSize)const; 00096 00097 //Our internal version with recursion stop flag 00098 int InternalReceiveMsg(char* pData, 00099 int iSize, 00100 int& iMoreMessages, 00101 bool bRecursed); 00102 00103 //Our cached data 00104 CachedDeque m_aData; 00105 }; 00106 00107 KOMODIA_NAMESPACE_END 00108 00109 #endif // !defined(AFX_TCPSOCKETASYNCMSG_H__F82FC905_951A_4FBE_ADE3_CC462DCC0EB3__INCLUDED_) |