SocketBodyC - Socket connection body class.

Developer Documentation

Centre for Vision, Speech & Signal Processing

Comments:
For dealing with stream sockets.

Parent Classes:

BodyRefCounterC

Variables:

int fd;
BooleanT server;
struct sockaddr * addr;: Allocated as a char array.
BooleanT dontClose;

Methods:

SocketBodyC(StringC name,BooleanT server = false): Open socket.
SocketBodyC(StringC name,UIntT portno,BooleanT server = false): Open socket.
SocketBodyC(struct sockaddr * addr,int nfd,BooleanT server = false)
~SocketBodyC(): Open socket.
int Fd() const: Access file descriptor.
BooleanT IsOpen() const: Test if socket is open.
SocketC Listen(BooleanT block = true,int backLog = 1): Listen for a connection from a client.
Can only be used on server sockets. If block is true, the call will not return until there is a valid client.
void Close(): Close the socket.
void SetDontClose(BooleanT ndontClose): Setup don't close flag.
StringC ConnectedHost(): Get host name
IntT ConnectedPort(): Get other port number.
BooleanT GetHostByName(const char * name,struct sockaddr_in & sin): Attempt to get info about named host.
returns true on success.
int OpenSocket(struct sockaddr_in & sin,IntT sockNo): Open a socket to the given address / port no.
int OpenClient(const char * name,IntT sockNo): Open a client socket.
int OpenServer(const char * name,IntT sockNo): Open a server socket.
Its then ready for listening.

#include "amma/BRefCnt.hh"

void AddReference(): Another reference to the object has been created.
void RemoveReference(): One reference to the object was deleted.
Locking scheme -------------- The object is possible to lock (to make constant). The scheme assumes that the object is created, it can be locked, after that it can only be destroyed. The locked object cannot be unlocked. This locking scheme is very useful during debugging, using assert() function, when it is necassary to check that object is treated as constant and the constancy is not violated by any casting or passing through the copy constructor of shared objects.
void SetConst(void) const: This locks the object.
Often objects you wish to lock are already const.
void SetConst(void): This locks the object.
BooleanT IsConst(void) const: Returns TRUE if the object is locked, ie. it is assumed to be constant.
BooleanT IsNotConst(void) const: Returns TRUE if the object is unlocked.
ie. there is no special information if the object is constant or not. Counter state information -------------------------
BooleanT ToBeDeleted() const: Returns TRUE if there is only one reference to the object and the whole object or its reference counting part can be deleted.
BooleanT ToBeDeletedRemoveIgnoreNoRemove(): Decrement refrence by 1 return true if this leaves no refrences to the object.
BooleanT ToBeDeletedRemove(): Decrement refrence by 1 return true if this leaves no refrences to the object. This also checks the NoRemove flag.
BooleanT BodyMightBeDeleted() const: Returns TRUE if the reference counted part of the object can be deleted, ie. flag NOREMOVE is false .
BooleanT IsCountZero() const: Are there any refrences left ?
BooleanT BRCPtrCanDeleteObject() const: Used by BRRCPtrC to establish if an object has ZERO refrences and can be deleted.
IntT Count() const: Returns the current state of the counter, ie. how many references to this object exist.
const BodyRefCounterC & operator=(const BodyRefCounterC & b): It has not meaning to assign object 'b' to this object because it would destroy a history of the object which is counted. So this is a dummy function.
BooleanT IsValidObject() const: Test if object is valid.
When amma check is disabled this always returns true.
BooleanT UserBitTest(IntT x) const: Test user flag.
void UserBitSet(IntT x,BooleanT setit = TRUE): Test user flag.
void UserBitZero(IntT x): Set bit to zero.
void ReportBRCError(char * Msg): Report error, used in BRCPtrC.
UIntT Hash() const: Hash on address of object.
void SetUndeletable(): Make object undeletable.
Usefull to prevent recursive deleting in graph structures. Only hackers need this function.
void ReportInvalidObject(char * Msg = 0) const: Tell user about validation failure.

#include "amma/RefCBase.hh"

LabelT Label() const: Returns the label of this reference counter.
The member function is useful mainly to recognize objects during debugging. The value of the label is uniquely defined pointer.

Programmer:Charles Galambos, Documentation by CxxDoc: Tue Mar 20 10:49:27 2001

SocketBodyC

Socket connection body class.

include	"amma/Socket.hh"
User Level:	Default
Library:	SysNetwork
Example:	exSocket.cc
Section:	Basic Types.Network
In Scope:	std