ConnectionBase Class Reference

An abstract base class for a connection. More...

#include <connectionbase.h>

Inherited by ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPBase, and ConnectionTLS.

Inheritance diagram for ConnectionBase:

[legend]List of all members.

Public Member Functions
	ConnectionBase (ConnectionDataHandler *cdh)
virtual	~ConnectionBase ()
virtual ConnectionError	connect ()=0
virtual ConnectionError	recv (int timeout=-1)=0
virtual bool	send (const std::string &data)=0
virtual ConnectionError	receive ()=0
virtual void	disconnect ()=0
virtual void	cleanup ()
ConnectionState	state () const
void	registerConnectionDataHandler (ConnectionDataHandler *cdh)
void	setServer (const std::string &server, int port=-1)
const std::string &	server () const
virtual void	getStatistics (int &totalIn, int &totalOut)=0
virtual ConnectionBase *	newInstance () const =0
Protected Attributes
ConnectionDataHandler *	m_handler
ConnectionState	m_state
std::string	m_server
int	m_port

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Detailed Description

An abstract base class for a connection.

You should not need to use this class directly.

Author:

Jakob Schröter <js@camaya.net>

Since:

0.9

Definition at line 34 of file connectionbase.h.

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Constructor & Destructor Documentation

ConnectionBase (  ConnectionDataHandler *  cdh  )  [inline]

Constructor. Parameters: cdh  An object derived from ConnectionDataHandler that will receive received data. Definition at line 42 of file connectionbase.h.

virtual ~ConnectionBase (   )  [inline, virtual]

Virtual destructor. Definition at line 49 of file connectionbase.h.

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Member Function Documentation

virtual void cleanup (   )  [inline, virtual]

This function is called after a disconnect to clean up internal state. It is also called by ConnectionBase's destructor. Reimplemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPBase, and ConnectionTLS. Definition at line 89 of file connectionbase.h.

virtual ConnectionError connect (   )  [pure virtual]

Used to initiate the connection. Returns: Returns the connection state. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPClient, ConnectionTCPServer, and ConnectionTLS.

virtual void disconnect (   )  [pure virtual]

Disconnects an established connection. NOOP if no active connection exists. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPBase, and ConnectionTLS.

virtual void getStatistics (  int &  totalIn, int &  totalOut )  [pure virtual]

Returns current connection statistics. Parameters: totalIn  The total number of bytes received. totalOut  The total number of bytes sent. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPBase, and ConnectionTLS.

virtual ConnectionBase* newInstance (   )  const [pure virtual]

This function returns a new instance of the current ConnectionBase-derived object. The idea is to be able to 'clone' ConnectionBase-derived objects without knowing of what type they are exactly. Returns: A new Connection* instance. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPClient, ConnectionTCPServer, and ConnectionTLS.

virtual ConnectionError receive (   )  [pure virtual]

Use this function to put the connection into 'receive mode', i.e. this function returns only when the connection is terminated. Returns: Returns a value indicating the disconnection reason. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPBase, and ConnectionTLS.

virtual ConnectionError recv (  int  timeout = -1  )  [pure virtual]

Use this periodically to receive data from the socket and to feed the parser. Parameters: timeout  The timeout to use for select in microseconds. Default of -1 means blocking. Returns: The state of the connection. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPClient, ConnectionTCPServer, and ConnectionTLS.

void registerConnectionDataHandler (  ConnectionDataHandler *  cdh  )  [inline]

Use this function to register a new ConnectionDataHandler. There can be only one ConnectionDataHandler at any one time. Parameters: cdh  The new ConnectionDataHandler. Definition at line 102 of file connectionbase.h.

virtual bool send (  const std::string &  data  )  [pure virtual]

Use this function to send a string of data over the wire. The function returns only after all data has been sent. Parameters: data  The data to send. Returns: True if the data has been sent (no guarantee of receipt), false in case of an error. Implemented in ConnectionBOSH, ConnectionHTTPProxy, ConnectionSOCKS5Proxy, ConnectionTCPBase, and ConnectionTLS.

const std::string& server (   )  const [inline]

Returns the currently set server/IP. Returns: The server host/IP. Definition at line 115 of file connectionbase.h.

void setServer (  const std::string &  server, int  port = -1 )  [inline]

Sets the server to connect to. Parameters: server  The server to connect to. Either IP or fully qualified domain name. port  The port to connect to. Reimplemented in ConnectionHTTPProxy. Definition at line 109 of file connectionbase.h.

ConnectionState state (   )  const [inline]

Returns the current connection state. Returns: The state of the connection. Definition at line 95 of file connectionbase.h.

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Member Data Documentation

ConnectionDataHandler* m_handler [protected]

A handler for incoming data and connect/disconnect events. Definition at line 134 of file connectionbase.h.

int m_port [protected]

Holds the port to connect to. Definition at line 143 of file connectionbase.h.

std::string m_server [protected]

Holds the server's name/address. Definition at line 140 of file connectionbase.h.

ConnectionState m_state [protected]

Holds the current connection state. Definition at line 137 of file connectionbase.h.

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The documentation for this class was generated from the following file:

• connectionbase.h

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