C++ POCO库中文编程参考指南（7） Poco::Net::DatagramSocket

1 构造函数

创建一个未连接的 IPv4 数据报 Socket：

DatagramSocket();

创建一个指定 IP 类型（IPv4 或 IPv6）的 数据报 Socket：

explicit DatagramSocket(IPAddress::Family family);

创建一个指定 SocketAddress 的数据报 Socket

DatagramSocket(const SocketAddress& address, bool 

reuseAddress = false);   
       
DatagramSocket(const Socket& socket);   
    /// Creates the DatagramSocket with the SocketImpl   
    /// from another socket. The SocketImpl must be   
    /// a DatagramSocketImpl, otherwise an InvalidArgumentException   
    /// will be thrown.

2 重载运算符

DatagramSocket& operator = (const Socket& socket);   
    /// Assignment operator.   
    ///   
    /// Releases the socket's SocketImpl and   
    /// attaches the SocketImpl from the other socket and   
    /// increments the reference count of the SocketImpl.

3 常 用操作

3.1 连接与绑定

void connect(const SocketAddress& address);

void bind(const SocketAddress& address, bool reuseAddress = false);

3.2 收发数据且不考虑 client

int sendBytes(const void* buffer, int length, int flags = 0);

int receiveBytes(void* buffer, int length, int flags = 0);

3.3 手法 数据且获取 client 的 SocketAddress

int sendTo(const void* buffer, int length, const SocketAddress& address, int flags = 0);

int receiveFrom(void* buffer, int length, SocketAddress& address, int flags = 0);

3.4 收发广播

void setBroadcast (bool flag);

bool getBroadcast() const;

4 protected 函数

DatagramSocket(SocketImpl* pImpl);

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