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Symbian 网络应用开发

Symbian 网络应用开发. 主要内容. Symbian 通信体系结构 Socket 应用开发 HTTP 协议应用开发. Symbian 通信体系结构. Socket 应用开发. 客户端 / 服务器程序. Socket 应用开发. 套接字服务器会话 套接字服务器会话类 RSocketServ m_sockServ; User::LeaveIfError(m_sockServ.Connect()); 网络连接管理类 RConnection. Socket 应用开发. 套接字 RSocket m_socket;

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Symbian 网络应用开发

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  1. Symbian网络应用开发

  2. 主要内容 • Symbian通信体系结构 • Socket应用开发 • HTTP协议应用开发

  3. Symbian通信体系结构

  4. Socket应用开发 • 客户端/服务器程序

  5. Socket应用开发 • 套接字服务器会话 • 套接字服务器会话类 RSocketServ m_sockServ; User::LeaveIfError(m_sockServ.Connect()); • 网络连接管理类 • RConnection

  6. Socket应用开发 • 套接字 RSocket m_socket; User::LeaveIfError( m_socket.Open( m_socketServ, KAfInet,KSockStream,KProtocolInetTcp ) ); m_socket.Connect( serverAddr , iStatus ); //接收和发送数据 void Recv(TDes8& aDesc,TUint flags,TRequestStatus& aStatus); void Recv(TDes8& aDesc,TUint flags,TRequestStatus& aStatus,TSockXfrLength& aLen); void RecvOneOrMore(TDes8& aDesc,TUint flags, TRequestStatus& aStatus,TSockXfrLength& aLen); void Send(const TDesC8& aDesc,TUint someFlags, TRequestStatus& aStatus,TSockXfrLength& aLen);

  7. Socket应用开发 • 域名解析基本过程 • （1）创建域名解析器实例 RHostResolver m_resolver; //解析结果 TNameEntry m_nameEntry; //被解析器找到的域名记录 TNameRecord m_nameRecord; • （2）打开域名解析器 User::LeaveIfError( m_resolver.Open( m_socketServ,KAfInet, KProtocolInetUdp ) );

  8. Socket应用开发 • 域名解析基本过程 • （3）发送域名解析请求 TBuf<50> serverName; serverName.Append(_L("www.sohu.com")); m_resolver.GetByName( serverName, m_nameEntry, iStatus );

  9. Socket应用开发 • 域名解析基本过程 • （4）处理域名解析结果 void CConnection::RunL() { m_resolver.Close(); if ( iStatus == KErrNone ) { // 域名解析成功 m_nameRecord = m_nameEntry(); //取出域名记录 ConnectL( TInetAddr::Cast( m_nameRecord.iAddr ). Address() ); } else { // 域名解析失败 // 做错误处理 } }

  10. Socket应用开发 • 安全套接字 • 使用安全套接字的基本过程： • （1）建立和打开一个RSocket套接字 使用RSocket::Open打开一个TCP/IP套接字RSocket。 使用RSocket::Connect()连接服务器。 • （2）由RSocket句柄创建一个 CSecureSocket对象 • （3）在安全套接字上调用StartClientHandshake() • （4）使用CSecureSocket的Send()和Recv()安全的传输数据

  11. HTTP协议应用开发 • HTTP会话 RHTTPSession iSession; //在类的ConstructL()方法中，打开会话 iSession.OpenL();

  12. HTTP协议应用开发 • HTTP事务 • 事务运行在会话上 • 事务由请求和响应组成 • HTTP事务类 • RHTTPTransaction • 侦听器接口类 class MHTTPTransactionCallback { public: virtual void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent) =0; virtual TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent& aEvent) =0; };

  13. HTTP协议应用开发 • HTTP事务 • 事务运行在会话上 • 事务由请求和响应组成 • HTTP事务类 • RHTTPTransaction • 侦听器接口类 class MHTTPTransactionCallback { public: virtual void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent) =0; virtual TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent& aEvent) =0; };

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