公司做网站费会计科目/百度的网页地址
这两天自己准备做一个小型C/S结构的演示工具，需要用到socket的编程。在网上看了很多帖子，发现许多人都在找“一个简单的socket”例子。而网上大多是对socket编程进行说明。最后看来看去，可能有些人还是摸不到门。我自己也走了几步弯路，才搭起一个C/S结构的小例子。下面，我把这个简单的例子放到自己的日志中，希望能对看到它的人，当然也包括我自己有一个初窥socket编程的概念。
这个例子很简单，服务端是单线程的，一般来说实际应用中多采用多线程方式监听客户请求的。我会再找时间将写一个这个例子的升级版本（多线程）。
先列客户端的代码：Client.h
#ifndef _SERVERSOCKET_H#define _SERVERSOCKET_H#include <sys/types.h>//! 下面是根据操作系统自动加载所需的库和头文件#ifdef WIN32 #include <winsock2.h> #pragma comment(lib,"ws2_32.lib") #else #include <sys/socket.h> #endif#include <string>#include <iostream>int WSAStartup( WORD wVersionRequested, LPWSADATA lpWSAData );using namespace std; class CClient
...{
int m_sockfd; struct sockaddr_in m_addr;public: CClient(const string& strAddr, int iPort); ~CClient(); BOOL Connect(); 
}; #endif#include "Client.h" CClient::CClient(const string& strAddr, int iPort)...{ WSADATA wsaData; int err = WSAStartup( MAKEWORD(2, 2), &wsaData ); if (err == SOCKET_ERROR) cout << "WSAStartup error" << endl; 
m_sockfd = socket(AF_INET, SOCK_STREAM, 0); /*需要错误检查 */ if (m_sockfd == -1)
...{ cout << "socket fail!" << endl; return;
} cout << "socket success!socket:" << m_sockfd << endl; memset(&m_addr, 0x00, sizeof(m_addr)); m_addr.sin_family = AF_INET; /**//* host byte order */ m_addr.sin_port = htons(iPort); /**//* short, network byte order */ m_addr.sin_addr.s_addr = inet_addr(strAddr.c_str());}CClient::~CClient()...{ WSACleanup(); }BOOL CClient::Connect()...{ int iRet = connect(m_sockfd, (struct sockaddr *)&m_addr, sizeof(m_addr)); if (iRet == -1) ...{ cout << "connect fail!" << endl; return FALSE; } return TRUE; }BOOL CClient::Send(const string& strSend)...{ int iRet = send(m_sockfd, strSend.c_str(), strSend.length(), 0); if (iRet == -1) ...{ cout << "connect fail!" << endl; return FALSE; } cout << "Send is OK!"; return TRUE; } #include <stdlib.h>#include "Client.h" int main(int argc, char *argv[])...{ CClient cc("127.0.0.1", 8001); //! 第一个参数是本机IP地址，第二参数是自选的端口号 cc.Connect(); cc.Send("Send Message!"); system("PAUSE"); return 0;}#ifndef _SERVERSOCKET_H#define _SERVERSOCKET_H#include <sys/types.h>#ifdef WIN32 #include <winsock2.h> #pragma comment(lib,"ws2_32.lib") #else #include <sys/socket.h> #endif #include <string>#include <iostream>#define SERVER_PORT 8001 #define MAX_BUFFER_LENGTH 2048 using namespace std; class CServer...{ int m_sockfd; struct sockaddr_in m_addr;public: CServer(const string& strAddr); ~CServer(); BOOL Start(); BOOL Stop(); }; #endif #include "Server.h"CServer::CServer(const string& strAddr)...{ WSADATA wsaData; int err = WSAStartup( MAKEWORD(2, 2), &wsaData ); if (err == SOCKET_ERROR) ...{ cout << "WSAStartup error" << endl; return; } m_sockfd = socket(AF_INET, SOCK_STREAM, 0); /**//*需要错误检查 */ m_addr.sin_family = AF_INET; /**//* host byte order */ m_addr.sin_port = htons(SERVER_PORT); /**//* short, network byte order */ m_addr.sin_addr.s_addr = inet_addr(strAddr.c_str());}CServer::~CServer()...{ WSACleanup();}BOOL CServer::Start()...{ int iret = bind(m_sockfd, (struct sockaddr *)&m_addr, sizeof(struct sockaddr)); if (iret == -1) ...{ cout << "bind fail" << endl; return FALSE; } cout << "bind OK" << endl; listen(m_sockfd, 3); cout << "listening..." << endl; struct sockaddr_in their_addr; int sin_size = sizeof(struct sockaddr_in); int getsockfd = accept(m_sockfd,(struct sockaddr *)&their_addr,&sin_size); cout << "accepted" << endl; char buf[MAX_BUFFER_LENGTH] = ...{0}; if (!getsockfd) ...{ return FALSE; } cout << "Starting Server...!" << endl; int recvLen = 0; do ...{ recvLen = recv(getsockfd, buf, sizeof(buf)/sizeof(buf[0]), 0); }while(recvLen == -1); cout << buf << endl; return TRUE; }BOOL CServer::Stop()...{ //close(m_sockfd); //! 这个地方如果去掉前面的注释符，编译会报错。 //! 我暂时还没有去了解原因。按道理应该要关闭的。 return TRUE; } #include <iostream>#include <stdlib.h>#include "Server.h" using namespace std; int main(int argc, char *argv[])...{ CServer cs("127.0.0.1"); //! 和客户端不同，我在代码中定义了端口号，你也可以在外边定义，增加灵活性 cs.Start(); system("PAUSE"); return 0;}