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lfc::posixPAL::sockets Namespace Reference

posix sockets PAL. More...

Typedefs
typedef int	Handle
	posix socket type. More...
Enumerations
enum	ErrorCodes {   errOk, errGeneric, errInitError, errConnectionClosed,   errUnbound, errNotListening, errBadAddress }
Functions
int	init ()
	initializes the environment. it _MUST_ be called _before_ any other sockets function. More...
int	cleanup ()
	cleans up the environment. it _MUST_ be called after there's no more need for sockets. More...
int	open (Handle &handle, int pf, int type)
	creates a socket. More...
int	close (Handle handle)
	close a file. More...
int	connect (Handle handle, const char *to, int pf, u_short port)
	establish a connection with a peer. More...
int	send (Handle handle, const char *buffer, long len, int flags, long &bytesSent)
	sends data on a connected socket. More...
int	sendTo (Handle handle, const char *buffer, long len, int flags, const char *to, int pf, u_short port, long &bytesSent)
	sends data to a specific destination ( most likely to be used in combination with connectionless protocols ). More...
int	recv (Handle handle, char *buffer, long len, int flags, long &bytesReceived)
	tries to receive data from a connected socket. More...
int	recvFrom (Handle handle, char *buffer, long len, int flags, char *from, int pf, u_short port, long &bytesReceived)
	receives a datagram and stores the source address. More...
int	bind (Handle handle, int pf, u_short port)
	associates a local address with a socket. More...
int	listen (Handle handle, int backlog=SOMAXCONN)
	puts the socket into listening state for incoming connections. More...
int	accept (Handle &newHandle, Handle handle)
	accept a connection on a socket. More...
int	setBlocking (Handle handle, bool blocking)
	control the mode of a socket. More...
int	getServicePort (const char *service, u_short &port)
int	flush (Handle handle)
	flush socket buffers. More...
const char *	message (int index)
	translates error codes to human readable error messages. More...
Variables
const int	MAX_ERROR_CODE = 6
const char *	messagesTable [MAX_ERROR_CODE+1]
const int	pfINET = AF_INET
	the network protocol family categories. More...
const int	pfUNIX = AF_UNIX
	the network protocol family categories. More...
const int	pfIPX = AF_IPX
	the network protocol family categories. More...
const int	stSTREAM = SOCK_STREAM
	connection oriented and conectionless socket types. More...
const int	stDGRAM = SOCK_DGRAM
	connection oriented and conectionless socket types. More...
const int	flagPEEK = MSG_PEEK
	flags for use with send()/sendto()/recv()/recvfrom(). More...
const int	flagOOB = MSG_OOB
	flags for use with send()/sendto()/recv()/recvfrom(). More...
const Handle	NULL_HANDLE = -1
	a handle value designating an invalid handle. More...

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Detailed Description

posix sockets PAL.

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Typedef Documentation

typedef int lfc::posixPAL::sockets::Handle

posix socket type.

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Enumeration Type Documentation

enum lfc::posixPAL::sockets::ErrorCodes

Enumeration values: errOk  errGeneric  errInitError  errConnectionClosed  errUnbound  errNotListening  errBadAddress

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Function Documentation

int init (    )  [inline]

initializes the environment. it _MUST_ be called _before_ any other sockets function. Returns: error code ( 0 == no errors )

int cleanup (    )  [inline]

cleans up the environment. it _MUST_ be called after there's no more need for sockets. Returns: error code ( 0 == no errors )

int open (  Handle &    handle, int    pf, int    type )  [inline]

creates a socket. Parameters: handle  contains a valid socket handle if the operation succeeds pf  protocol family. see the ProtocolFamily enum for allowed values. type  the socket type. see the SocketType enum for allowed values. Returns: error code ( 0 == no errors )

int close (  Handle    handle )  [inline]

close a file. Parameters: handle  a handle to the socket to close Returns: error code ( 0 == no errors )

int connect (  Handle    handle, const char *    to, int    pf, u_short    port )  [inline]

establish a connection with a peer. Parameters: handle  a handle to the socket to connect to  a C-style string containing either a hostname or an IP address pf  the protocol family to be used for the connection; see the ProtocolFamily enum port  the peer port you wish to connect to Returns: error code ( 0 == no errors )

int send (  Handle    handle, const char *    buffer, long    len, int    flags, long &    bytesSent )  [inline]

sends data on a connected socket. Parameters: handle  a handle to the socket to send buffer  pointer to the buffer containing the data to be sent len  number of bytes to send from the buffer flags  see the Flag enum. flagPEEK gets len bytes into the buffer but doesn't remove them from the input queue. bytesSent  the number of bytes that send() managed to actually send Returns: error code ( 0 == no errors )

int sendTo (  Handle    handle, const char *    buffer, long    len, int    flags, const char *    to, int    pf, u_short    port, long &    bytesSent )  [inline]

sends data to a specific destination ( most likely to be used in combination with connectionless protocols ). Parameters: handle  a handle to the socket to send buffer  pointer to the buffer containing the data to be sent len  number of bytes to send from the buffer flags  see the Flag enum. flagPEEK gets len bytes into the buffer but doesn't remove them from the input queue. to  a C-style string containing either a hostname or an IP address pf  the protocol family to be used; see the ProtocolFamily enum port  the peer port you wish to connect to bytesSent  the number of bytes that sendto() managed to actually send Returns: error code ( 0 == no errors )

int recv (  Handle    handle, char *    buffer, long    len, int    flags, long &    bytesReceived )  [inline]

tries to receive data from a connected socket. Parameters: handle  a handle to the socket to receive buffer  pointer to the buffer to hold the received data into len  number of bytes to receive into the buffer flags  see the Flag enum. flagPEEK gets len bytes into the buffer but doesn't remove them from the input queue. Returns: error code ( 0 == no errors )

int recvFrom (  Handle    handle, char *    buffer, long    len, int    flags, char *    from, int    pf, u_short    port, long &    bytesReceived )  [inline]

receives a datagram and stores the source address. Parameters: handle  a handle to the socket to receive buffer  pointer to the buffer to hold the received data into len  number of bytes to receive into the buffer flags  see the Flag enum. flagPEEK gets len bytes into the buffer but doesn't remove them from the input queue. from  a C-style string containing an IP address; filled after execution pf  the protocol family to be used; see the ProtocolFamily enum port  the peer port you wish to connect to Returns: error code ( 0 == no errors )

int bind (  Handle    handle, int    pf, u_short    port )  [inline]

associates a local address with a socket. Parameters: handle  a handle to the socket to connect pf  the protocol family that the desired to be bound socket should use port  the port to bind the socket represented by handle to Returns: error code ( 0 == no errors )

int listen (  Handle    handle, int    backlog = SOMAXCONN )  [inline]

puts the socket into listening state for incoming connections. Parameters: handle  a handle to the socket to listen backlog  the maximum length to which the queue of pending connections may grow Returns: error code ( 0 == no errors )

int accept (  Handle &    newHandle, Handle    handle )  [inline]

accept a connection on a socket. Parameters: newHandle  will contain a handle to a new socket if accept() succeeds; won't be modified otherwise handle  the socket that accepts connections Returns: error code ( 0 == no errors )

int setBlocking (  Handle    handle, bool    blocking )  [inline]

control the mode of a socket. Parameters: handle  a handle to the socket. blocking  true, for blocking mode, false for non-blocking mode Returns: error code ( 0 == no errors )

int getServicePort (  const char *    service, u_short &    port )  [inline]

Parameters: service  service name port  return the port asociated with service Returns: error code ( 0 == no errors )

int flush (  Handle    handle )  [inline]

flush socket buffers. Parameters: handle  an open socket handle Returns: error code ( 0 == no errors ) Todo: fix this!

const char* message (  int    index )  [inline]

translates error codes to human readable error messages. Parameters: index  message index (return code from other pal functions)

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Variable Documentation

const int lfc::posixPAL::sockets::MAX_ERROR_CODE = 6

const char * lfc::posixPAL::sockets::messagesTable

Initial value: { "posixPAL::sockets -- No error (ok)", "posixPAL::sockets -- Generic socket error", "posixPAL::sockets -- Environment not initialized", "posixPAL::sockets -- Connection has been closed", "posixPAL::sockets -- Unbound socket", "posixPAL::sockets -- Socket should be listening", "posixPAL::sockets -- Invalid hostname/IP address", }

const int lfc::posixPAL::sockets::pfINET = AF_INET

the network protocol family categories.

const int lfc::posixPAL::sockets::pfUNIX = AF_UNIX

the network protocol family categories.

const int lfc::posixPAL::sockets::pfIPX = AF_IPX

the network protocol family categories.

const int lfc::posixPAL::sockets::stSTREAM = SOCK_STREAM

connection oriented and conectionless socket types.

const int lfc::posixPAL::sockets::stDGRAM = SOCK_DGRAM

connection oriented and conectionless socket types.

const int lfc::posixPAL::sockets::flagPEEK = MSG_PEEK

flags for use with send()/sendto()/recv()/recvfrom().

const int lfc::posixPAL::sockets::flagOOB = MSG_OOB

flags for use with send()/sendto()/recv()/recvfrom().

const Handle lfc::posixPAL::sockets::NULL_HANDLE = -1

a handle value designating an invalid handle.

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