模拟一个IOCP服务器
时间: 2024-01-31 21:04:12 浏览: 25
这里提供一个简单的IOCP服务器模拟示例(基于Windows API):
1. 创建监听套接字和完成端口
```c++
SOCKET listenSocket = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
SOCKADDR_IN serverAddr;
serverAddr.sin_family = AF_INET;
serverAddr.sin_port = htons(1234);
serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(listenSocket, (SOCKADDR*)&serverAddr, sizeof(serverAddr));
listen(listenSocket, SOMAXCONN);
HANDLE completionPort = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0);
```
2. 接受连接请求并将客户端套接字加入到完成端口
```c++
while (true) {
SOCKET clientSocket = WSAAccept(listenSocket, NULL, NULL, NULL, 0);
CreateIoCompletionPort((HANDLE)clientSocket, completionPort, (ULONG_PTR)clientSocket, 0);
// 处理客户端请求
}
```
3. 在工作线程中异步接收客户端请求并处理
```c++
DWORD WINAPI WorkerThread(LPVOID lpParam) {
HANDLE completionPort = (HANDLE)lpParam;
DWORD numBytes;
ULONG_PTR clientSocket;
LPOVERLAPPED lpOverlapped;
while (true) {
GetQueuedCompletionStatus(completionPort, &numBytes, &clientSocket, &lpOverlapped, INFINITE);
// 处理客户端请求
}
return 0;
}
```
4. 异步读取数据并处理请求
```c++
SOCKET clientSocket = (SOCKET)clientSocket;
char buffer[1024];
WSABUF dataBuf;
dataBuf.buf = buffer;
dataBuf.len = sizeof(buffer);
OVERLAPPED overlapped;
ZeroMemory(&overlapped, sizeof(overlapped));
overlapped.hEvent = WSACreateEvent();
WSARecv(clientSocket, &dataBuf, 1, NULL, &flags, &overlapped, NULL);
DWORD numBytes;
DWORD flags = 0;
GetQueuedCompletionStatus(completionPort, &numBytes, &clientSocket, &lpOverlapped, INFINITE);
// 处理客户端请求
```
5. 异步写入响应数据
```c++
char response[] = "Hello, World!";
WSABUF dataBuf;
dataBuf.buf = response;
dataBuf.len = sizeof(response);
OVERLAPPED overlapped;
ZeroMemory(&overlapped, sizeof(overlapped));
overlapped.hEvent = WSACreateEvent();
WSASend(clientSocket, &dataBuf, 1, NULL, flags, &overlapped, NULL);
DWORD numBytes;
DWORD flags = 0;
GetQueuedCompletionStatus(completionPort, &numBytes, &clientSocket, &lpOverlapped, INFINITE);
```
以上是一个简单的IOCP服务器模拟示例,可以根据实际需求进行修改和完善。