我正在尝试编写一个服务器应用程序包装器,就像我在任何应用程序中所做的那样,我已经搜索了一周以上至少一个体面的指南或异步套接字教程(这个包装器必须是异步的)到目前为止我能做什么这是这样的:
#ifndef _SERVER_H
#define _SERVER_H
#include "asynserv.h" // header file with the important lib includes
#include <map>
namespace Connections
{
DWORD WINAPI MainThread(LPVOID lParam); // Main thread
DWORD WINAPI DataThread(LPVOID lParam); // thread that will be created for each client
struct ClientServer // struct to keep a server and a client pair.
{
public:
struct Client* Client;
class Server* Server;
};
struct Client // a struct wrapper to keep clients
{
public:
Client(SOCKET Connection, int BufferSize, UINT ID);
~Client();
SOCKET WorkerSocket;
char Buffer[255];
bool Connected;
int RecvSize;
UINT UID;
void Send(char * Data);
void Disconnect();
};
class Server
{
private:
SOCKET WorkerSocket;
SOCKADDR_IN EndPnt;
UINT ID;
int CBufferSize;
public:
Server(int Port, int Backlog, int BufferSize);
~Server();
__event void ClientRecieved(Client* Clientr, char * RecData);
bool Enabled;
int Port;
int Backlog;
HWND ReqhWnd;
std::map<UINT, Client*> ClientPool;
void WaitForConnections(Server*);
void WaitForData(Client*);
void InvokeClientDC(UINT);
void Startup();
void Shutdown();
};
}
#endif
Server.cpp:
#include "Server.h"
namespace Connections
{
void Server::Startup()
{
WSADATA wsa;
WSAStartup(0x0202, &wsa);
this->WorkerSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
this->EndPnt.sin_addr.s_addr = ADDR_ANY;
this->EndPnt.sin_family = AF_INET;
this->EndPnt.sin_port = htons(this->Port);
this->Enabled = true;
this->ID = 0;
bind(this->WorkerSocket, (SOCKADDR*)&this->EndPnt, sizeof(this->EndPnt));
printf("[AsynServer]Bound..\n");
listen(this->WorkerSocket, this->Backlog);
CreateThread(NULL, NULL, &MainThread, this, NULL, NULL);
}
void Server::WaitForConnections(Server * Ser)
{
WSAEVENT Handler = WSA_INVALID_EVENT;
while(Ser->Enabled)
{
Handler = WSACreateEvent();
WSAEventSelect(Ser->WorkerSocket, Handler, FD_ACCEPT);
WaitForSingleObject(Handler, INFINITE);
SOCKET accptsock = accept(Ser->WorkerSocket, NULL, NULL);
Client * NewClient = new Client(accptsock, 255, Ser->ID++);
NewClient->Connected = true;
printf("[AsynServer]Client connected.\n");
ClientServer * OurStruct = new ClientServer();
OurStruct->Server = Ser;
OurStruct->Client = NewClient;
CreateThread(NULL, NULL, &DataThread, OurStruct, NULL, NULL);
}
}
void Server::WaitForData(Client * RClient)
{
WSAEVENT Tem = WSA_INVALID_EVENT;
Tem = WSACreateEvent();
WSAEventSelect(RClient->WorkerSocket, Tem, FD_READ);
while(RClient->Connected)
{
WaitForSingleObject(Tem, INFINITE);
RClient->RecvSize = recv(RClient->WorkerSocket, RClient->Buffer, 255, NULL);
if(RClient->RecvSize > 0)
{
RClient->Buffer[RClient->RecvSize] = '\0';
__raise this->ClientRecieved(RClient, RClient->Buffer);
Sleep(50);
}
}
return;
}
DWORD WINAPI MainThread(LPVOID lParam)
{
((Server*)lParam)->WaitForConnections((Server*)lParam);
return 0;
}
DWORD WINAPI DataThread(LPVOID lParam)
{
ClientServer * Sta = ((ClientServer*)lParam);
Sta->Server->WaitForData(Sta->Client);
return 0;
}
}
现在在创建服务器实例并创建主线程之后,我可以同时接受客户端并读取他们发送的数据,但在两次连接后我的CPU滞后直到100%使用..我猜我的方法不正确,所以我的问题是可以有人指出我的代码中可能存在缺陷,或者只是指出异步套接字的正确指南,前提是我已经搜索了一周没有结果(可能我的绝望阻碍了我选择正确的关键字:|) . 提前感谢并对这段巨大的代码感到抱歉,只要它允许就修剪它 .
制造,SimpleButPerfect .
1 回答
第一个错误:在Server :: WaitForConnections中,每次while循环执行时都会创建HEVENT(Handler = WSACreateEvent())而不会破坏它 . 将HEVENT创建移动到while循环之外 .
第二个错误:你的缓冲区长255(char),但你这样做:RClient-> Buffer [RClient-> RecvSize] ='\ 0';其中RClient-> RecvSize可能是缓冲区大小的特征 - 这意味着你使一个类“缓冲区溢出” .
我希望这有帮助 . 多米尼克