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[C++][Logging] 项目中写日志模块的实现
转自
http://www.adp-gmbh.ch/win/misc/sockets.html
Here, I present the source code for a socket class that faciliates using Sockets in Windows Programming. I also want to say thanks Fabien Le Lez, www.infflux.com and Tamas Kaskoto who have improved this source.
This socket class is being used for BROADCAST chat client.
These are actually four classes: Socket (the base class) from which SocketServer and SocketClient are derived. Also, there is SocketSelect which can be used to do a Select call on more than one Socket. The constructors of Socket are protected; this should be a taken as a hint not to use Socket, but either SocketServer or SocketClient.
When you compile this files, make sure you link them against Ws2_32.lib.
Jump to the header file, the implementation file, the test programm and the Echo Server. Here's also a Proxy and a Web Server.
You can also download the files.
A small description of the socket class: Every program that uses Windows Sockets needs to call WSAStartup. This call is wrapped into Socket::Start, which in turn is called by the Socket's constructor. I pass 2.0 as version here as I expect that version to be installed.
The Socket's constructor also calls socket() (note the small s) which actually creates the socket. It passes the SOCK_STREAM parameter, indicating TCP. If UDP were wished, you'd have to pass SOCK_DGRAM.
SocketClient: SocketClient is inherited from Socket.
The constructor of SocketClient takes a host as parameter, which is the name of the server that this client wishes to communicate to. This name is resolved into an IP Address by gethostbyname().
SocketServer: SocketServer is inherited from Socket.
The constructor of the SocketServer class listens on the port indicated in its parameter. This is made by calling bind().
As SOCK_STREAM type sockets have the ability to queue incoming connection requests, we need to know the maximum number of connections to be queued which can be stated by the connections parameter (and which is passed to listen()).
SocketServer::Accept(): simply waits for an incoming connection request (or removes one from the queue) by calling accept (note the small a).
The header file
socket.h
The implementation file
socket.cpp
A simple echo Server
The following simple Server opens a port on 2000 and waits for incoming connections. Each connection is answered with the same line as was written (echoed).
If you want to test the server, use telnet localhost 2000
A Proxy that uses the Socket class
You need the Chameleon class to compile this proxy.
Usage: proxy <port proxy> <addr server> <port server>.
This proxy will then listen on <port proxy> and whenever it receives a connection, relays the traffic to the <port server> of <addr server>. This makes it ideal to see what an SMTP Client exchanges with a SMTP Server, or equally what a NNTP client exchanges with an NNTP Server.
Proxy.cpp
See also: Fiddler: a HTTP Debugging Proxy which logs all HTTP traffic between your computer and the Internet. Fiddler allows you to watch HTTP Traffic, set breakpoints, and "fiddle" with incoming or outgoing data. Fiddler is designed to be much simpler than using NetMon or Achilles.
Message Distributor
Message Distributor is a server that listens on port 2000. Any number of clients can connect to that server. When a client sends a message to the server, the server will broadcast this message to all other clients, but not to the one that sent the message.
MsgDistributor.cpp
Download the files
You can download the source code and the exefiles as a zip file consisting of
socket.h
Chameleon.h
Chameleon.cpp
EchoServer.cpp
MsgDistributor.cpp
Proxy.cpp
Socket.cpp
EchoServer.exe
Proxy.exe
makefile
I was able to compile the sources with mingw using the supplied makefile.
Thanks
Thanks to Eugene Wee and Nathan Vander Wilt who helped me improve the socket class.
http://www.adp-gmbh.ch/win/misc/sockets.html
C++ Socket Class for Windows
Here, I present the source code for a socket class that faciliates using Sockets in Windows Programming. I also want to say thanks Fabien Le Lez, www.infflux.com and Tamas Kaskoto who have improved this source.
This socket class is being used for BROADCAST chat client.
These are actually four classes: Socket (the base class) from which SocketServer and SocketClient are derived. Also, there is SocketSelect which can be used to do a Select call on more than one Socket. The constructors of Socket are protected; this should be a taken as a hint not to use Socket, but either SocketServer or SocketClient.
When you compile this files, make sure you link them against Ws2_32.lib.
Jump to the header file, the implementation file, the test programm and the Echo Server. Here's also a Proxy and a Web Server.
You can also download the files.
A small description of the socket class: Every program that uses Windows Sockets needs to call WSAStartup. This call is wrapped into Socket::Start, which in turn is called by the Socket's constructor. I pass 2.0 as version here as I expect that version to be installed.
The Socket's constructor also calls socket() (note the small s) which actually creates the socket. It passes the SOCK_STREAM parameter, indicating TCP. If UDP were wished, you'd have to pass SOCK_DGRAM.
SocketClient: SocketClient is inherited from Socket.
The constructor of SocketClient takes a host as parameter, which is the name of the server that this client wishes to communicate to. This name is resolved into an IP Address by gethostbyname().
SocketServer: SocketServer is inherited from Socket.
The constructor of the SocketServer class listens on the port indicated in its parameter. This is made by calling bind().
As SOCK_STREAM type sockets have the ability to queue incoming connection requests, we need to know the maximum number of connections to be queued which can be stated by the connections parameter (and which is passed to listen()).
SocketServer::Accept(): simply waits for an incoming connection request (or removes one from the queue) by calling accept (note the small a).
The header file
socket.h
/* Socket.h Copyright (C) 2002-2004 René Nyffenegger This source code is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this source code must not be misrepresented; you must not claim that you wrote the original source code. If you use this source code in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original source code. 3. This notice may not be removed or altered from any source distribution. René Nyffenegger rene.nyffenegger@adp-gmbh.ch Update By:Jacky.Dai Date:2016.07.13 Link:http://jacky-dai.iteye.com/admin/blogs/2309507 */ #ifndef SOCKET_H #define SOCKET_H #include <WinSock2.h> #include <string> // ////////////////////////////////////////////////////////////////////////// enum TypeSocket { BlockingSocket = 0, NonBlockingSocket = 1 }; #define MAX_SOCKET_RECV_BUFFER 1024 ////////////////////////////////////////////////////////////////////////// class Socket { public: Socket(const Socket&); //Default copy function virtual ~Socket(); Socket& operator=(Socket&); //Default evaluate function // The parameter of SendLine is not a const reference // because SendLine modifes the std::string passed. void SendLine(std::string); // The parameter of SendBytes is a const reference // because SendBytes does not modify the std::string passed // (in contrast to SendLine). void SendBytes(const std::string&); void SendBytes(const char* pData, int nSize); std::string ReceiveLine(); std::string ReceiveBytes(); void Close(); protected: friend class SocketServer; friend class SocketSelect; Socket(SOCKET s); Socket(); //Default Constructor SOCKET s_; int streamType; // UDP: use SOCK_DGRAM instead of SOCK_STREAM // TCP: use SOCK_STREAM private: static void Start(); static void End(); static int refCounter_; static int nofSockets_; }; class SocketClient : public Socket { public: SocketClient(const std::string& host, int port); virtual ~SocketClient(){} private: SocketClient(){}//Default Constructor SocketClient(const SocketClient&){} //Default copy function SocketClient& operator = (SocketClient&){return *this;} //Default evaluate function }; class SocketServer : public Socket { public: SocketServer(int port, int connections, TypeSocket type=BlockingSocket); virtual ~SocketServer(){} Socket* Accept(); private: SocketServer(){}//Default Constructor SocketServer(const SocketServer&){} //Default copy function SocketServer& operator = (SocketServer&){return *this;} //Default evaluate function }; //http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winsock/wsapiref_2tiq.asp class SocketSelect { public: SocketSelect(Socket const * const s1, Socket const * const s2=NULL, TypeSocket type=BlockingSocket); virtual ~SocketSelect(){} bool Readable(Socket const * const s); private: SocketSelect(){} //Default Constructor SocketSelect(const SocketSelect&){} //Default copy function SocketSelect& operator = (SocketSelect&){return *this;} //Default evaluate function private: fd_set fds_; }; #endif
The implementation file
socket.cpp
/* Socket.cpp Copyright (C) 2002-2004 René Nyffenegger This source code is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this source code must not be misrepresented; you must not claim that you wrote the original source code. If you use this source code in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original source code. 3. This notice may not be removed or altered from any source distribution. René Nyffenegger rene.nyffenegger@adp-gmbh.ch Update By:Jacky.Dai Date:2016.07.13 Link:http://jacky-dai.iteye.com/admin/blogs/2309507 */ #include "Socket.h" #include <iostream> using namespace std; int Socket::refCounter_= 0; int Socket::nofSockets_= 0; #pragma comment(lib, "Ws2_32.lib") ////////////////////////////////////////////////////////////////////////// Socket::~Socket() { --refCounter_; if (!refCounter_) { Close(); } --nofSockets_; if (!nofSockets_) { End(); } } Socket::Socket(const Socket& o) : s_(0) , streamType(SOCK_STREAM) { refCounter_= o.refCounter_; refCounter_++; s_ =o.s_; nofSockets_++; } Socket& Socket::operator=(Socket& o) { o.refCounter_++; refCounter_=o.refCounter_; s_ =o.s_; nofSockets_++; streamType = o.streamType; return *this; } void Socket::SendLine(std::string s) { s += '\n'; SendBytes(s.c_str(), s.length()); } void Socket::SendBytes(const std::string& s) { SendBytes(s.c_str(), s.length()); } void Socket::SendBytes(const char* pData, int nSize) { send(s_, pData, nSize, 0); //How to make sure all data has been send? // PBYTE pSendData = pData->GetBuffer(); // int nLen = pData->GetLength(); // // int nTotalSend = 0; // while (nTotalSend < nLen) // { // int nSent = send(cSock, (PSTR)pSendData, (nLen - nTotalSend), 0); // if(nSent == SOCKET_ERROR) // { // CloseSocket(); // return FALSE; // } // else // { // nTotalSend += nSent; // pData += nSent; // } // } } std::string Socket::ReceiveLine() { std::string ret; while (1) { char r; switch(recv(s_, &r, 1, 0)) { case 0: { // not connected anymore; // ... but last line sent // might not end in \n, // so return ret anyway. return ret; } case -1: { return ""; } // if (errno == EAGAIN) { // return ret; // } else { // // not connected anymore // return ""; // } } ret += r; if (r == '\n') { return ret; } } } std::string Socket::ReceiveBytes() { std::string ret; char buf[MAX_SOCKET_RECV_BUFFER]; while (1) { u_long arg = 0; if (ioctlsocket(s_, FIONREAD, &arg) != 0) { break; } if (arg == 0) { break; } if (arg > MAX_SOCKET_RECV_BUFFER) { arg = MAX_SOCKET_RECV_BUFFER; } int rv = recv (s_, buf, arg, 0); if (rv <= 0) { break; } std::string t; t.assign (buf, rv); ret += t; } return ret; } void Socket::Close() { closesocket(s_); } void Socket::Start() { if (!nofSockets_) { WSADATA info; if (WSAStartup(MAKEWORD(2,0), &info)) { throw "Could not start WSA"; } } ++nofSockets_; } void Socket::End() { WSACleanup(); } Socket::Socket() : s_(0) , streamType(SOCK_STREAM) { Start(); // UDP: use SOCK_DGRAM instead of SOCK_STREAM s_ = socket(AF_INET, streamType,0); if (s_ == INVALID_SOCKET) { throw "INVALID_SOCKET"; } } Socket::Socket(SOCKET s) : s_(s) , streamType(SOCK_STREAM) { Start(); }; // ////////////////////////////////////////////////////////////////////////// SocketServer::SocketServer(int port, int connections, TypeSocket type) { sockaddr_in sa; memset(&sa, 0, sizeof(sa)); sa.sin_family = PF_INET; sa.sin_port = htons((u_short)port); s_ = socket(AF_INET, streamType, 0); if (s_ == INVALID_SOCKET) { throw "INVALID_SOCKET"; } if(type == NonBlockingSocket) { u_long arg = 1; ioctlsocket(s_, FIONBIO, &arg); } /* bind the socket to the internet address */ if (bind(s_, (sockaddr *)&sa, sizeof(sockaddr_in)) == SOCKET_ERROR) { closesocket(s_); throw "INVALID_SOCKET"; } listen(s_, connections); } Socket* SocketServer::Accept() { SOCKET new_sock = accept(s_, 0, 0); if (new_sock == INVALID_SOCKET) { int rc = WSAGetLastError(); if(rc==WSAEWOULDBLOCK) { return 0; // non-blocking call, no request pending } else { throw "Invalid Socket"; } } Socket* r = new Socket(new_sock); return r; } // ////////////////////////////////////////////////////////////////////////// SocketClient::SocketClient(const std::string& host, int port) : Socket() { std::string error; hostent *he; if ((he = gethostbyname(host.c_str())) == 0) { error = strerror(errno); throw error; } sockaddr_in addr; addr.sin_family = AF_INET; addr.sin_port = htons(port); addr.sin_addr = *((in_addr *)he->h_addr); memset(&(addr.sin_zero), 0, 8); if (::connect(s_, (sockaddr *) &addr, sizeof(sockaddr))) { error = strerror(WSAGetLastError()); throw error; } } // ////////////////////////////////////////////////////////////////////////// SocketSelect::SocketSelect(Socket const * const s1, Socket const * const s2, TypeSocket type) { FD_ZERO(&fds_); FD_SET(const_cast<Socket*>(s1)->s_,&fds_); if(s2) { FD_SET(const_cast<Socket*>(s2)->s_,&fds_); } TIMEVAL tval; tval.tv_sec = 0; tval.tv_usec = 1; TIMEVAL *ptval; if(type==NonBlockingSocket) { ptval = &tval; } else { ptval = 0; } if (select (0, &fds_, (fd_set*) 0, (fd_set*) 0, ptval) == SOCKET_ERROR) { throw "Error in select"; } } bool SocketSelect::Readable(Socket const* const s) { if (FD_ISSET(s->s_,&fds_)) return true; return false; }
A simple echo Server
The following simple Server opens a port on 2000 and waits for incoming connections. Each connection is answered with the same line as was written (echoed).
If you want to test the server, use telnet localhost 2000
/* EchoServer.cpp Copyright (C) 2002-2004 René Nyffenegger This source code is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this source code must not be misrepresented; you must not claim that you wrote the original source code. If you use this source code in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original source code. 3. This notice may not be removed or altered from any source distribution. René Nyffenegger rene.nyffenegger@adp-gmbh.ch */ #include "Socket.h" #include <process.h> #include <string> unsigned __stdcall Answer(void* a) { Socket* s = (Socket*) a; while (1) { std::string r = s->ReceiveLine(); if (r.empty()) break; s->SendLine(r); } delete s; return 0; } int main(int argc, char* argv[]) { SocketServer in(2000,5); while (1) { Socket* s=in.Accept(); unsigned ret; _beginthreadex(0,0,Answer,(void*) s,0,&ret); } return 0; }
A Proxy that uses the Socket class
You need the Chameleon class to compile this proxy.
Usage: proxy <port proxy> <addr server> <port server>.
This proxy will then listen on <port proxy> and whenever it receives a connection, relays the traffic to the <port server> of <addr server>. This makes it ideal to see what an SMTP Client exchanges with a SMTP Server, or equally what a NNTP client exchanges with an NNTP Server.
Proxy.cpp
/* Proxy.cpp Copyright (C) 2002-2004 René Nyffenegger This source code is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this source code must not be misrepresented; you must not claim that you wrote the original source code. If you use this source code in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original source code. 3. This notice may not be removed or altered from any source distribution. René Nyffenegger rene.nyffenegger@adp-gmbh.ch */ #include "Socket.h" #include <iostream> #include <process.h> #include <sstream> int portProxy; std::string addrServer; int portServer; unsigned __stdcall RunProxyThread (void* a) { Socket* s = (Socket*) a; SocketClient c(addrServer, portServer); while (1) { SocketSelect sel(s, &c); bool still_connected = true; if (sel.Readable(s)) { std::string bytes = s->ReceiveBytes(); c.SendBytes(bytes); std::cout << "Server: " << bytes << std::endl; if (bytes.empty()) still_connected=false; } if (sel.Readable(&c)) { std::string bytes = c.ReceiveBytes(); s->SendBytes(bytes); std::cout << "Client: " << bytes << std::endl; if (bytes.empty()) still_connected=false; } if (! still_connected) { break; } } delete s; return 0; } int main(int argc, char* argv[]) { if (argc < 4) { std::cout << "Usage:" << std::endl; std::cout << " proxy <port proxy> <addr server> <port server>" << std::endl; std::cout << std::endl; std::cout << " This proxy will then listen on <port proxy> and whenever it receives" << std::endl; std::cout << " a connection, relays the traffic to the <port server> of <addr server>." << std::endl; std::cout << " This makes it ideal to see what an SMTP Client exchanges with a SMTP Server," << std::endl; std::cout << " or equally what a NNTP client exchanges with an NNTP Server." << std::endl << std::endl; return -1; } std::stringstream s; s<<argv[1]; s>>portProxy; s.clear(); addrServer=argv[2]; s<<argv[3]; s>>portServer; SocketServer in(portProxy,5); while (1) { Socket* s=in.Accept(); unsigned ret; _beginthreadex(0, 0, RunProxyThread,(void*) s,0,&ret); } return 0; }
See also: Fiddler: a HTTP Debugging Proxy which logs all HTTP traffic between your computer and the Internet. Fiddler allows you to watch HTTP Traffic, set breakpoints, and "fiddle" with incoming or outgoing data. Fiddler is designed to be much simpler than using NetMon or Achilles.
Message Distributor
Message Distributor is a server that listens on port 2000. Any number of clients can connect to that server. When a client sends a message to the server, the server will broadcast this message to all other clients, but not to the one that sent the message.
MsgDistributor.cpp
/* MsgDistributor.cpp Copyright (C) 2002-2004 René Nyffenegger This source code is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this source code must not be misrepresented; you must not claim that you wrote the original source code. If you use this source code in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original source code. 3. This notice may not be removed or altered from any source distribution. René Nyffenegger rene.nyffenegger@adp-gmbh.ch */ #include "Socket.h" #include <process.h> #include <string> #include <list> typedef std::list<Socket*> socket_list; socket_list g_connections; unsigned __stdcall Connection(void* a) { Socket* s = (Socket*) a; g_connections.push_back(s); s->SendLine("Welcome to the Message Distributor"); while (1) { std::string r = s->ReceiveLine(); if (r.empty()) break; for (socket_list::iterator os =g_connections.begin(); os!=g_connections.end(); os++) { if (*os != s) (*os)->SendLine(r); } } g_connections.remove(s); delete s; return 0; } int main() { SocketServer in(2000,5); while (1) { Socket* s=in.Accept(); unsigned ret; _beginthreadex(0,0,Connection,(void*) s,0,&ret); } return 0; }
Download the files
You can download the source code and the exefiles as a zip file consisting of
socket.h
Chameleon.h
Chameleon.cpp
EchoServer.cpp
MsgDistributor.cpp
Proxy.cpp
Socket.cpp
EchoServer.exe
Proxy.exe
makefile
I was able to compile the sources with mingw using the supplied makefile.
Thanks
Thanks to Eugene Wee and Nathan Vander Wilt who helped me improve the socket class.
- Socket_Class.zip (3.7 KB)
- 下载次数: 0
- C___Socket_Class_for_Windows.zip (14.9 KB)
- 下载次数: 0
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FreeRTOS
2022-03-05 16:31 212Ref https://blog.csdn.net/weix ... -
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2020-09-28 16:36 0#!/usr/bin/python #coding: U ... -
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串口通讯相关
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2018-10-30 17:54 1240https://www.cnblogs.com/guoyz13 ... -
C++/MFC 換皮膚
2018-10-20 11:05 429https://blog.csdn.net/u01123991 ... -
WinCE 截屏 - C++ 代碼
2018-08-31 09:45 529// this function create a bmp ... -
Android NDK搭建環境
2017-11-27 13:25 533https://www.cnblogs.com/ut2016- ... -
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2017-10-17 13:38 5218583相关资料,整理中... -
Java高级应用之JNI
2017-06-19 09:00 553参考link http://www.cnblogs.com/l ... -
C++实现ping功能
2017-04-18 11:21 2043基础知识 ping的过程是向目的IP发送一个type=8的I ... -
OpenSSL 编译环境搭建
2017-03-27 15:01 8621 安裝VS2008到 c:\Program Files (x ... -
最优非对称加密填充(OAEP)
2017-03-25 14:53 1521OpenSSL命令---rsautl http://blog. ... -
[Platform Builder] 设置SVM OS build Env
2016-11-10 11:39 01 copy one OSDesign Project to ... -
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c++通过socket udp模式传输struct数据(各种类型数据:int double float char long long等)到c++与python。c++通过socket udp接收数据,python通过enum枚举进行接收并且通过赋值给class类,封装统一方法
实现中的几个注意点: 1 Socket类几个成员函数的访问权限为protected 使Socket类可以进行继承 但不允许私自使用; 2 TCPClient类的send receive方法使用了著名的writen readn 来源UNP 实现 解决了TCP的粘包问题 3 ...
Herm是一套快速开发高性能的网络应用的C++库。比如开发网络游戏、即时通信、流媒体、文件下载、P2P等基于TCP/IP网络应用。 Herm包括三个组件: (1)Utilities 最基础的组件,提供线程、一读一写线程不加锁的...
本文实例讲述了C++自定义封装socket操作业务类。分享给大家供大家参考,具体如下: Linux下C++封装socket操作的工具类(自己实现) socketconnector.h #ifndef SOCKETCONNECTOR_H #define SOCKETCONNECTOR_H #...
程序中用到STL的std::map和std::list,也大量的运行了模板类,如:关于线程的参数 ARGS即为模板类:template <class T> ARGS{}、还有一个就是SOCKET结构体: HOSTSTRUCTSTRCT的定义也是用到了模板类。...
I offer it here on CodeProject for all those who need a reliable and robust TCP socket class. What you can download here is a very clean code written by an experienced programmer, with proper error ...
c++ udp通信发送实例 ///////////////////////////////////////////////////////// // initsock.h文件 #include #pragma comment(lib, "WS2_32") // 链接到WS2_32.lib class CInitSock { public: CInitSock...
4、A Stream Socket API for C 参考网站WebSite:http://www.pcs.cnu.edu/~dgame/s/sC/s.html 又个对Socket封装库 C各大有名库介绍——XML 1、Xerces 参考网站WebSite:http://xml.apache.org/xerces-c/ Xerces-...
5.4.1案例:socket库c++模型设计和实现 6 5.4.2案例:计算员工工资 6 5.4.3案例:计算几何体的表面积和体积 6 5.6 C面向接口编程和C多态 6 5.6.1函数类型语法基础 6 5.6.2函数指针做函数参数 6 5.6.3函数指针正向...
本资源含大量的图像处理代码(C++) int kind = 0; // 图像类型(8位kind=1,24位kind=3,初始化kind=0) LONG Bytes = 0; // 图像分配内存的最大值 BOOL Step; // 菜单上一步、下一步启动禁用标志 -> FALSE为下...