---

TCPStream Class Reference

TCP streams are used to represent TCP client connections to a server by TCP protocol servers for accepting client connections. streamable TCP socket connection. More...

#include <socket.h>

Inheritance diagram for TCPStream::

List of all members.

Public Methods
	TCPStream (TCPSocket &server, int size=512, bool throwflag=true, timeout_t timeout=0)
	Create a TCP stream by accepting a connection from a bound TCP socket acting as a server. More...
	TCPStream (const InetHostAddress &host, tpport_t port, int size=512, bool throwflag=true, timeout_t to=0)
	Create a TCP stream by connecting to a TCP socket (on a remote machine). More...
void	setTimeout (timeout_t to)
	Set the I/O operation timeout for socket I/O operations. More...
	TCPStream (const TCPStream &source)
	A copy constructor creates a new stream buffer. More...
virtual	~TCPStream ()
	Flush and empty all buffers, and then remove the allocated buffers. More...
int	sync (void)
	Flushes the stream input and output buffers, writes pending output. More...
bool	isPending (sockpend_t pend, timeout_t timeout=TIMEOUT_INF)
	Get the status of pending stream data. More...
int	getBufferSize (void) const
	Return the size of the current stream buffering used. More...
Protected Methods
	TCPStream (bool throwflag=true)
	The constructor required for "tcpstream", a more C++ style version of the TCPStream class. More...
void	Allocate (int size)
	Used to allocate the buffer space needed for iostream operations. More...
void	endStream (void)
	Used to terminate the buffer space and cleanup the socket connection. More...
virtual int	underflow (void)
	This streambuf method is used to load the input buffer through the established tcp socket connection. More...
int	uflow (void)
	This streambuf method is used for doing unbuffered reads through the establish tcp socket connection when in interactive mode. More...
int	overflow (int ch)
	This streambuf method is used to write the output buffer through the established tcp connection. More...
void	Connect (const InetHostAddress &host, tpport_t port, int size)
	Create a TCP stream by connecting to a TCP socket (on a remote machine). More...
std::iostream *	tcp (void)
	Used in derived classes to refer to the current object via it's iostream. More...
Protected Attributes
timeout_t	timeout
int	bufsize
char *	gbuf
char *	pbuf
Friends
TCPStream &	crlf (TCPStream &)
TCPStream &	lfcr (TCPStream &)

---

Detailed Description

TCP streams are used to represent TCP client connections to a server by TCP protocol servers for accepting client connections. streamable TCP socket connection.

The TCP stream is a C++ "stream" class, and can accept streaming of data to and from other C++ objects using the << and >> operators.

TCPStream itself can be formed either by connecting to a bound network address of a TCP server, or can be created when "accepting" a network connection from a TCP server.

Author:

David Sugar <dyfet@ostel.com>

---

Constructor & Destructor Documentation

TCPStream::TCPStream (  bool   throwflag = true )  [protected]

The constructor required for "tcpstream", a more C++ style version of the TCPStream class.

TCPStream::TCPStream (  TCPSocket &   server, int   size = 512, bool   throwflag = true, timeout_t   timeout = 0 )

Create a TCP stream by accepting a connection from a bound TCP socket acting as a server. This performs an "accept" call. Parameters: size   of streaming input and output buffers. flag   to throw errors. timeout   for all operations.

TCPStream::TCPStream (  const InetHostAddress &   host, tpport_t   port, int   size = 512, bool   throwflag = true, timeout_t   to = 0 )

Create a TCP stream by connecting to a TCP socket (on a remote machine). Parameters: host   address of remote TCP server. port   number to connect. size   of streaming input and output buffers. flag   to throw errors. timeout   for all operations.

TCPStream::TCPStream (  const TCPStream &   source )

A copy constructor creates a new stream buffer. Parameters: source   of copy.

virtual TCPStream::~TCPStream (    )  [inline, virtual]

Flush and empty all buffers, and then remove the allocated buffers.

---

Member Function Documentation

void TCPStream::Allocate (  int   size )  [protected]

Used to allocate the buffer space needed for iostream operations. This function is called by the constructor. Parameters: size   of stream buffers from constructor.

void TCPStream::Connect (  const InetHostAddress &   host, tpport_t   port, int   size )  [protected]

Create a TCP stream by connecting to a TCP socket (on a remote machine). Parameters: host   address of remote TCP server. port   number to connect. size   of streaming input and output buffers.

void TCPStream::endStream (  void   )  [protected]

Used to terminate the buffer space and cleanup the socket connection. This fucntion is called by the destructor.

int TCPStream::getBufferSize (  void   )  const [inline]

Return the size of the current stream buffering used. Returns: size of stream buffers.

bool TCPStream::isPending (  sockpend_t   pend, timeout_t   timeout = TIMEOUT_INF )  [virtual]

Get the status of pending stream data. This can be used to examine if input or output is waiting, or if an error or disconnect has occured on the stream. If a read buffer contains data then input is ready and if write buffer contains data it is first flushed and then checked. Reimplemented from Socket.

int TCPStream::overflow (  int   ch )  [protected]

This streambuf method is used to write the output buffer through the established tcp connection. Parameters: char   to push through. Returns: char pushed through.

void TCPStream::setTimeout (  timeout_t   to )  [inline]

Set the I/O operation timeout for socket I/O operations. Parameters: timeout   to set. Reimplemented in URLStream.

int TCPStream::sync (  void   )

Flushes the stream input and output buffers, writes pending output. Returns: 0 on success.

std::iostream* TCPStream::tcp (  void   )  [inline, protected]

Used in derived classes to refer to the current object via it's iostream. For example, to send a set of characters in a derived method, one might use *tcp() << "test". Returns: stream pointer of this object.

int TCPStream::uflow (  void   )  [protected]

This streambuf method is used for doing unbuffered reads through the establish tcp socket connection when in interactive mode. Also this method will handle proper use of buffers if not in interative mode. Returns: char from tcp socket connection, EOF if not connected.

virtual int TCPStream::underflow (  void   )  [protected, virtual]

This streambuf method is used to load the input buffer through the established tcp socket connection. Returns: char from get buffer, EOF if not connected. Reimplemented in URLStream.

---

Friends And Related Function Documentation

TCPStream& crlf (  TCPStream &   )  [friend]

TCPStream& lfcr (  TCPStream &   )  [friend]

---

Member Data Documentation

int TCPStream::bufsize [protected]

char* TCPStream::gbuf [protected]

char * TCPStream::pbuf [protected]

timeout_t TCPStream::timeout [protected]

---

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

• socket.h

---