GNU CommonC++
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ost::TCPV6Socket Class Reference

TCPV6 sockets are used for stream based connected sessions between two ipv6 sockets. More...

#include <socket.h>

Inheritance diagram for ost::TCPV6Socket:
ost::Socket

Public Member Functions

virtual bool onAccept (const IPV6Host &ia, tpport_t port)
 A method to call in a derived TCPSocket class that is acting as a server when a connection request is being accepted. More...
 
SOCKET getSocket (void)
 Fetch out the socket. More...
 
int getSegmentSize (void)
 
 TCPV6Socket (const IPV6Address &bind, tpport_t port, unsigned backlog=5, unsigned mss=536)
 A TCP "server" is created as a TCP socket that is bound to a hardware address and port number on the local machine and that has a backlog queue to listen for remote connection requests. More...
 
 TCPV6Socket (const char *name, unsigned backlog=5, unsigned mss=536)
 Create a TCP server for a named host interface and service port. More...
 
IPV6Host getRequest (tpport_t *port=NULL) const
 Return address and port of next connection request. More...
 
void reject (void)
 Used to reject the next incoming connection request. More...
 
IPV6Host getLocal (tpport_t *port=NULL) const
 Used to get local bound address. More...
 
bool isPendingConnection (timeout_t timeout=TIMEOUT_INF)
 Used to wait for pending connection requests. More...
 
virtual ~TCPV6Socket ()
 Use base socket handler for ending this socket. More...
 

Additional Inherited Members

- Protected Types inherited from ost::Socket
enum  State {
  INITIAL, AVAILABLE, BOUND, CONNECTED,
  CONNECTING, STREAM
}
 
typedef enum State State
 
enum  Family { IPV6 = AF_INET6, IPV4 = AF_INET }
 
enum  Error {
  errSuccess = 0, errCreateFailed, errCopyFailed, errInput,
  errInputInterrupt, errResourceFailure, errOutput, errOutputInterrupt,
  errNotConnected, errConnectRefused, errConnectRejected, errConnectTimeout,
  errConnectFailed, errConnectInvalid, errConnectBusy, errConnectNoRoute,
  errBindingFailed, errBroadcastDenied, errRoutingDenied, errKeepaliveDenied,
  errServiceDenied, errServiceUnavailable, errMulticastDisabled, errTimeout,
  errNoDelay, errExtended, errLookupFail, errSearchErr,
  errInvalidValue
}
 
enum  Tos {
  tosLowDelay = 0, tosThroughput, tosReliability, tosMinCost,
  tosInvalid
}
 
enum  Pending { pendingInput, pendingOutput, pendingError }
 
typedef enum Family Family
 
typedef enum Error Error
 
typedef enum Tos Tos
 
typedef enum Pending Pending
 
- Protected Member Functions inherited from ost::Socket
Error error (Error error, const char *err=NULL, long systemError=0) const
 This service is used to throw all socket errors which usually occur during the socket constructor. More...
 
void error (const char *err) const
 This service is used to throw application defined socket errors where the application specific error code is a string. More...
 
void setError (bool enable)
 This service is used to turn the error handler on or off for "throwing" exceptions by manipulating the thrown flag. More...
 
void endSocket (void)
 Used as the default destructor for ending a socket. More...
 
Error connectError (void)
 Used as a common handler for connection failure processing. More...
 
Error sendLimit (int limit=2048)
 Set the send limit. More...
 
Error receiveLimit (int limit=1)
 Set thr receive limit. More...
 
Error sendTimeout (timeout_t timer)
 Set the send timeout for sending raw network data. More...
 
Error receiveTimeout (timeout_t timer)
 Receive timeout for receiving raw network data. More...
 
Error sendBuffer (unsigned size)
 Set the protocol stack network kernel send buffer size associated with the socket. More...
 
Error receiveBuffer (unsigned size)
 Set the protocol stack network kernel receive buffer size associated with the socket. More...
 
Error bufferSize (unsigned size)
 Set the total protocol stack network kernel buffer size for both send and receive together. More...
 
Error setBroadcast (bool enable)
 Set the subnet broadcast flag for the socket. More...
 
Error setMulticastByFamily (bool enable, Family family=IPV4)
 Setting multicast binds the multicast interface used for the socket to the interface the socket itself has been implicitly bound to. More...
 
Error setLoopbackByFamily (bool enable, Family family=IPV4)
 Set the multicast loopback flag for the socket. More...
 
Error setTimeToLiveByFamily (unsigned char ttl, Family fam=IPV4)
 Set the multicast time to live for a multicast socket. More...
 
Error join (const IPV4Multicast &ia)
 Join a multicast group. More...
 
Error join (const IPV6Multicast &ia)
 
Error drop (const IPV4Multicast &ia)
 Drop membership from a multicast group. More...
 
Error drop (const IPV6Multicast &ia)
 
Error setRouting (bool enable)
 Set the socket routing to indicate if outgoing messages should bypass normal routing (set false). More...
 
Error setNoDelay (bool enable)
 Enable/disable delaying packets (Nagle algorithm) More...
 
 Socket (int domain, int type, int protocol=0)
 An unconnected socket may be created directly on the local machine. More...
 
 Socket (SOCKET fd)
 A socket object may be created from a file descriptor when that descriptor was created either through a socket() or accept() call. More...
 
 Socket ()
 Create an inactive socket object for base constructors. More...
 
 Socket (const Socket &source)
 A socket can also be constructed from an already existing Socket object. More...
 
ssize_t readLine (char *buf, size_t len, timeout_t timeout=0)
 Process a logical input line from a socket descriptor directly. More...
 
virtual ssize_t readData (void *buf, size_t len, char separator=0, timeout_t t=0)
 Read in a block of len bytes with specific separator. More...
 
virtual ssize_t writeData (const void *buf, size_t len, timeout_t t=0)
 Write a block of len bytes to socket. More...
 
virtual ~Socket ()
 The socket base class may be "thrown" as a result of an error, and the "catcher" may then choose to destroy the object. More...
 
Socketoperator= (const Socket &from)
 Sockets may also be duplicated by the assignment operator. More...
 
virtual IPV4Host getIPV4Sender (tpport_t *port=NULL) const
 May be used to examine the origin of data waiting in the socket receive queue. More...
 
IPV4Host getSender (tpport_t *port=NULL) const
 
virtual IPV6Host getIPV6Sender (tpport_t *port=NULL) const
 
IPV4Host getIPV4Peer (tpport_t *port=NULL) const
 Get the host address and port of the socket this socket is connected to. More...
 
IPV4Host getPeer (tpport_t *port=NULL) const
 
IPV6Host getIPV6Peer (tpport_t *port=NULL) const
 
IPV4Host getIPV4Local (tpport_t *port=NULL) const
 Get the local address and port number this socket is currently bound to. More...
 
IPV4Host getLocal (tpport_t *port=NULL) const
 
IPV6Host getIPV6Local (tpport_t *port=NULL) const
 
IPV4Host getIPV4NAT (tpport_t *port=NULL) const
 Perform NAT table lookup for this socket. More...
 
IPV4Host getNAT (tpport_t *port) const
 
IPV6Host getIPV6NAT (tpport_t *port=NULL) const
 
void setCompletion (bool immediate)
 Used to specify blocking mode for the socket. More...
 
Error setLinger (bool linger)
 Enable lingering sockets on close. More...
 
Error setKeepAlive (bool enable)
 Set the keep-alive status of this socket and if keep-alive messages will be sent. More...
 
Error setTypeOfService (Tos service)
 Set packet scheduling on platforms which support ip quality of service conventions. More...
 
bool isConnected (void) const
 Can test to see if this socket is "connected", and hence whether a "catch" can safely call getPeer(). More...
 
bool isActive (void) const
 Test to see if the socket is at least operating or if it is mearly initialized. More...
 
bool operator! () const
 Operator based testing to see if a socket is currently active. More...
 
bool isBroadcast (void) const
 Return if broadcast has been enabled for the specified socket. More...
 
bool isRouted (void) const
 Return if socket routing is enabled. More...
 
Error getErrorNumber (void) const
 Often used by a "catch" to fetch the last error of a thrown socket. More...
 
const char * getErrorString (void) const
 Often used by a "catch" to fetch the user set error string of a thrown socket, but only if EXTENDED error codes are used. More...
 
long getSystemError (void) const
 
const char * getSystemErrorString (void) const
 
virtual bool isPending (Pending pend, timeout_t timeout=TIMEOUT_INF)
 Get the status of pending operations. More...
 
- Static Protected Member Functions inherited from ost::Socket
static bool check (Family fam)
 See if a specific protocol family is available in the current runtime environment. More...
 
- Protected Attributes inherited from ost::Socket
struct {
   bool   thrown: 1
 
   bool   broadcast: 1
 
   bool   route: 1
 
   bool   keepalive: 1
 
   bool   loopback: 1
 
   bool   multicast: 1
 
   bool   completion: 1
 
   bool   linger: 1
 
   unsigned   ttl: 8
 
flags
 
SOCKET volatile so
 the actual socket descriptor, in Windows, unlike posix it cannot be used as an file descriptor that way madness lies – jfc More...
 
State volatile state
 
- Static Protected Attributes inherited from ost::Socket
static Mutex mutex
 

Detailed Description

TCPV6 sockets are used for stream based connected sessions between two ipv6 sockets.

Both error recovery and flow control operate transparently for a TCP socket connection. The TCP socket base class is primary used to bind a TCP "server" for accepting TCP streams.

An implicit and unique TCPV6Socket object exists in Common C++ to represent a bound ipv6 TCP socket acting as a "server" for receiving connection requests. This class is not part of TCPStream because such objects normally perform no physical I/O (read or write operations) other than to specify a listen backlog queue and perform "accept" operations for pending connections. The Common C++ TCPV6Socket offers a Peek method to examine where the next pending connection is coming from, and a Reject method to flush the next request from the queue without having to create a session.

The TCPV6Socket also supports a "OnAccept" method which can be called when a TCPStream related object is created from a TCPSocket. By creating a TCPStream from a TCPV6Socket, an accept operation automatically occurs, and the TCPV6Socket can then still reject the client connection through the return status of it's OnAccept method.

Author
David Sugar dyfet.nosp@m.@tyc.nosp@m.ho.co.nosp@m.m bound server for TCP streams and sessions.

Constructor & Destructor Documentation

ost::TCPV6Socket::TCPV6Socket ( const IPV6Address bind,
tpport_t  port,
unsigned  backlog = 5,
unsigned  mss = 536 
)

A TCP "server" is created as a TCP socket that is bound to a hardware address and port number on the local machine and that has a backlog queue to listen for remote connection requests.

If the server cannot be created, an exception is thrown.

Parameters
bindlocal ip address or interface to use.
portnumber to bind socket under.
backlogsize of connection request queue.
mssmaximum segment size of streaming buffer.
ost::TCPV6Socket::TCPV6Socket ( const char *  name,
unsigned  backlog = 5,
unsigned  mss = 536 
)

Create a TCP server for a named host interface and service port.

We use [host/]port for specifying the optional host name and service port since ':' is a valid char for ipv6 addresses.

Parameters
nameof host interface and service to use.
backlogsize of connection request queue.
mssmaximum segment size of streaming buffers.
virtual ost::TCPV6Socket::~TCPV6Socket ( )
virtual

Use base socket handler for ending this socket.

Member Function Documentation

IPV6Host ost::TCPV6Socket::getLocal ( tpport_t port = NULL) const
inline

Used to get local bound address.

References ost::Socket::getIPV6Local().

IPV6Host ost::TCPV6Socket::getRequest ( tpport_t port = NULL) const
inline

Return address and port of next connection request.

This can be used instead of OnAccept() to pre-evaluate connection requests.

Returns
host requesting a connection.
Parameters
portnumber of requestor.

References ost::Socket::getIPV6Sender().

int ost::TCPV6Socket::getSegmentSize ( void  )
inline
SOCKET ost::TCPV6Socket::getSocket ( void  )
inline

Fetch out the socket.

bool ost::TCPV6Socket::isPendingConnection ( timeout_t  timeout = TIMEOUT_INF)
inline

Used to wait for pending connection requests.

Returns
true if data packets available.
Parameters
timeoutin milliseconds. TIMEOUT_INF if not specified.

References ost::Socket::isPending(), and ost::Socket::pendingInput.

virtual bool ost::TCPV6Socket::onAccept ( const IPV6Host ia,
tpport_t  port 
)
virtual

A method to call in a derived TCPSocket class that is acting as a server when a connection request is being accepted.

The server can implement protocol specific rules to exclude the remote socket from being accepted by returning false. The Peek method can also be used for this purpose.

Returns
true if client should be accepted.
Parameters
iainternet host address of the client.
portnumber of the client.
void ost::TCPV6Socket::reject ( void  )

Used to reject the next incoming connection request.


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