TCP sockets are used for stream based connected sessions between two sockets.
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void | setSegmentSize (unsigned mss) |
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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.
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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.
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void | setError (bool enable) |
| This service is used to turn the error handler on or off for "throwing" exceptions by manipulating the thrown flag.
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void | endSocket (void) |
| Used as the default destructor for ending a socket.
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Error | connectError (void) |
| Used as a common handler for connection failure processing.
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Error | sendLimit (int limit=2048) |
| Set the send limit.
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Error | receiveLimit (int limit=1) |
| Set thr receive limit.
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Error | sendTimeout (timeout_t timer) |
| Set the send timeout for sending raw network data.
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Error | receiveTimeout (timeout_t timer) |
| Receive timeout for receiving raw network data.
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Error | sendBuffer (unsigned size) |
| Set the protocol stack network kernel send buffer size associated with the socket.
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Error | receiveBuffer (unsigned size) |
| Set the protocol stack network kernel receive buffer size associated with the socket.
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Error | bufferSize (unsigned size) |
| Set the total protocol stack network kernel buffer size for both send and receive together.
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Error | setBroadcast (bool enable) |
| Set the subnet broadcast flag for the socket.
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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.
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Error | setLoopbackByFamily (bool enable, Family family=IPV4) |
| Set the multicast loopback flag for the socket.
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Error | setTimeToLiveByFamily (unsigned char ttl, Family fam=IPV4) |
| Set the multicast time to live for a multicast socket.
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Error | join (const IPV4Multicast &ia) |
| Join a multicast group.
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Error | join (const IPV6Multicast &ia) |
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Error | drop (const IPV4Multicast &ia) |
| Drop membership from a multicast group.
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Error | drop (const IPV6Multicast &ia) |
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Error | setRouting (bool enable) |
| Set the socket routing to indicate if outgoing messages should bypass normal routing (set false).
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Error | setNoDelay (bool enable) |
| Enable/disable delaying packets (Nagle algorithm)
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| Socket (int domain, int type, int protocol=0) |
| An unconnected socket may be created directly on the local machine.
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| 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.
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| Socket () |
| Create an inactive socket object for base constructors.
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| Socket (const Socket &source) |
| A socket can also be constructed from an already existing Socket object.
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ssize_t | readLine (char *buf, size_t len, timeout_t timeout=0) |
| Process a logical input line from a socket descriptor directly.
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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.
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virtual ssize_t | writeData (const void *buf, size_t len, timeout_t t=0) |
| Write a block of len bytes to socket.
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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.
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Socket & | operator= (const Socket &from) |
| Sockets may also be duplicated by the assignment operator.
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virtual IPV4Host | getIPV4Sender (tpport_t *port=NULL) const |
| May be used to examine the origin of data waiting in the socket receive queue.
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IPV4Host | getSender (tpport_t *port=NULL) const |
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virtual IPV6Host | getIPV6Sender (tpport_t *port=NULL) const |
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IPV4Host | getIPV4Peer (tpport_t *port=NULL) const |
| Get the host address and port of the socket this socket is connected to.
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IPV4Host | getPeer (tpport_t *port=NULL) const |
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IPV6Host | getIPV6Peer (tpport_t *port=NULL) const |
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IPV4Host | getIPV4Local (tpport_t *port=NULL) const |
| Get the local address and port number this socket is currently bound to.
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IPV4Host | getLocal (tpport_t *port=NULL) const |
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IPV6Host | getIPV6Local (tpport_t *port=NULL) const |
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IPV4Host | getIPV4NAT (tpport_t *port=NULL) const |
| Perform NAT table lookup for this socket.
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IPV4Host | getNAT (tpport_t *port) const |
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IPV6Host | getIPV6NAT (tpport_t *port=NULL) const |
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void | setCompletion (bool immediate) |
| Used to specify blocking mode for the socket.
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Error | setLinger (bool linger) |
| Enable lingering sockets on close.
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Error | setKeepAlive (bool enable) |
| Set the keep-alive status of this socket and if keep-alive messages will be sent.
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Error | setTypeOfService (Tos service) |
| Set packet scheduling on platforms which support ip quality of service conventions.
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bool | isConnected (void) const |
| Can test to see if this socket is "connected", and hence whether a "catch" can safely call getPeer().
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bool | isActive (void) const |
| Test to see if the socket is at least operating or if it is mearly initialized.
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bool | operator! () const |
| Operator based testing to see if a socket is currently active.
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bool | isBroadcast (void) const |
| Return if broadcast has been enabled for the specified socket.
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bool | isRouted (void) const |
| Return if socket routing is enabled.
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Error | getErrorNumber (void) const |
| Often used by a "catch" to fetch the last error of a thrown socket.
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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.
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long | getSystemError (void) const |
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const char * | getSystemErrorString (void) const |
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virtual bool | isPending (Pending pend, timeout_t timeout=TIMEOUT_INF) |
| Get the status of pending operations.
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TCP sockets are used for stream based connected sessions between two 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 TCPSocket object exists in Common C++ to represent a bound 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++ TCPSocket 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 TCPSocket 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 TCPSocket, an accept operation automatically occurs, and the TCPSocket 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.
- Examples
- tcp.cpp, tcpservice.cpp, tcpstr1.cpp, and tcpthread.cpp.