ost::UDPTransmit Class Reference

Representing half of a two-way UDP connection, the UDP transmitter can broadcast data to another selected peer host or to an entire subnet. More...

#include <udp.h>

Inheritance diagram for ost::UDPTransmit:

Collaboration diagram for ost::UDPTransmit:

Public Member Functions
bool	isOutputReady (unsigned long timeout=0l)
	See if output queue is empty for sending more packets. More...
Error	setBroadcast (bool enable)
Error	setRouting (bool enable)
Error	setTypeOfService (Tos tos)
ssize_t	transmit (const char *buffer, size_t len)
	Transmit "send" to use "connected" send rather than sendto. More...

Protected Member Functions
Error	connect (const IPV4Host &host, tpport_t port)
	Associate this socket with a specified peer host. More...
Error	connect (const IPV6Address &host, tpport_t port)
Error	connect (const IPV4Broadcast &subnet, tpport_t port)
	Associate this socket with a subnet of peer hosts for subnet broadcasting. More...
Error	connect (const IPV4Multicast &mgroup, tpport_t port)
	Associate this socket with a multicast group. More...
Error	connect (const IPV6Multicast &mgroup, tpport_t port)
void	endTransmitter (void)
	Stop transmitter.
SOCKET	getTransmitter (void)
ssize_t	send (const void *buf, size_t len)
	Transmit "send" to use "connected" send rather than sendto. More...
Error	setMulticast (bool enable)
Error	setTimeToLive (unsigned char ttl)
	UDPTransmit (Family family=IPV4)
	Create a UDP transmitter.
	UDPTransmit (const IPV4Address &bind, tpport_t port=5005)
	Create a UDP transmitter, bind it to a specific interface and port address so that other UDP sockets on remote machines (or the same host) may find and send UDP messages to it, and associate it with a given port on a peer host. More...
	UDPTransmit (const IPV6Address &bind, tpport_t port=5005)
Protected Member Functions inherited from ost::UDPSocket
void	connect (const IPV4Host &host, tpport_t port)
void	connect (const IPV6Host &host, tpport_t port)
void	connect (const char *service)
Error	disconnect (void)
	Disassociate this socket from any host connection. More...
Socket::Error	getInterfaceIndex (const char *ethX, int &InterfaceIndex)
	get the interface index for a named network device More...
IPV4Host	getIPV4Peer (tpport_t *port=((void *) 0)) const
	Examine address of sender of next waiting packet. More...
IPV6Host	getIPV6Peer (tpport_t *port=((void *) 0)) const
IPV4Host	getPeer (tpport_t *port=((void *) 0)) const
Socket::Error	join (const IPV4Multicast &ia, int InterfaceIndex)
	join a multicast group on a particular interface More...
ssize_t	peek (void *buf, size_t len)
	Examine contents of next waiting packet. More...
ssize_t	receive (void *buf, size_t len, bool reply=false)
	Receive a message from any host. More...
ssize_t	send (const void *buf, size_t len)
	Send a message packet to a peer host. More...
Error	setLoopback (bool enable)
	Set the loopback.
Error	setMulticast (bool enable)
	Set the multicast.
void	setPeer (const IPV4Host &host, tpport_t port)
	set the peer address to send message packets to. More...
void	setPeer (const IPV6Host &host, tpport_t port)
void	setPeer (const char *service)
	Associate socket with a named connection.
Error	setTimeToLive (char ttl)
	Set time to live.
	UDPSocket (Family family=IPV4)
	Create an unbound UDP socket, mostly for internal use.
	UDPSocket (const char *name, Family family=IPV4)
	Create a UDP socket bound by a service name.
	UDPSocket (const IPV4Address &bind, tpport_t port)
	Create a UDP socket and bind it to a specific interface and port address so that other UDP sockets on remote machines (or the same host) may find and send UDP messages to it. More...
	UDPSocket (const IPV6Address &bind, tpport_t port)
virtual	~UDPSocket ()
	Destroy a UDP socket as a socket.
Protected Member Functions inherited from ost::Socket
Error	bufferSize (unsigned size)
	Set the total protocol stack network kernel buffer size for both send and receive together. More...
Error	connectError (void)
	Used as a common handler for connection failure processing. More...
Error	drop (const IPV4Multicast &ia)
	Drop membership from a multicast group. More...
Error	drop (const IPV6Multicast &ia)
void	endSocket (void)
	Used as the default destructor for ending a socket. More...
Error	error (Error error, const char *err=((void *) 0), 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...
Error	join (const IPV4Multicast &ia)
	Join a multicast group. More...
Error	join (const IPV6Multicast &ia)
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...
ssize_t	readLine (char *buf, size_t len, timeout_t timeout=0)
	Process a logical input line from a socket descriptor directly. More...
Error	receiveBuffer (unsigned size)
	Set the protocol stack network kernel receive buffer size associated with the socket. More...
Error	receiveLimit (int limit=1)
	Set thr receive limit.
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	sendLimit (int limit=2048)
	Set the send limit.
Error	sendTimeout (timeout_t timer)
	Set the send timeout for sending raw network data. More...
Error	setBroadcast (bool enable)
	Set the subnet broadcast flag for the socket. 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...
Error	setLoopbackByFamily (bool enable, Family family=IPV4)
	Set the multicast loopback 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	setNoDelay (bool enable)
	Enable/disable delaying packets (Nagle algorithm) More...
Error	setRouting (bool enable)
	Set the socket routing to indicate if outgoing messages should bypass normal routing (set false). More...
Error	setTimeToLiveByFamily (unsigned char ttl, Family fam=IPV4)
	Set the multicast time to live for a multicast socket. More...
	Socket (int domain, int type, int protocol=0)
	An unconnected socket may be created directly on the local machine. More...
	Socket (socket_t 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.
	Socket (const Socket &source)
	A socket can also be constructed from an already existing Socket object. More...
virtual ssize_t	writeData (const void *buf, size_t len, timeout_t t=0)
	Write a block of len bytes to socket. More...
struct in_addr	getaddress (const IPV4Address &ia)
struct in6_addr	getaddress (const IPV6Address &ia)
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...
IPV4Host	getIPV4Local (tpport_t *port=((void *) 0)) const
	Get the local address and port number this socket is currently bound to. More...
IPV4Host	getIPV4Peer (tpport_t *port=((void *) 0)) const
	Get the host address and port of the socket this socket is connected to. More...
virtual IPV4Host	getIPV4Sender (tpport_t *port=((void *) 0)) const
	May be used to examine the origin of data waiting in the socket receive queue. More...
IPV6Host	getIPV6Local (tpport_t *port=((void *) 0)) const
IPV6Host	getIPV6Peer (tpport_t *port=((void *) 0)) const
virtual IPV6Host	getIPV6Sender (tpport_t *port=((void *) 0)) const
IPV4Host	getLocal (tpport_t *port=((void *) 0)) const
IPV4Host	getPeer (tpport_t *port=((void *) 0)) const
IPV4Host	getSender (tpport_t *port=((void *) 0)) const
long	getSystemError (void) const
const char *	getSystemErrorString (void) const
bool	isActive (void) const
	Test to see if the socket is at least operating or if it is mearly initialized. More...
bool	isBroadcast (void) const
	Return if broadcast has been enabled for the specified socket. More...
bool	isConnected (void) const
	Can test to see if this socket is "connected", and hence whether a "catch" can safely call getPeer(). More...
virtual bool	isPending (Pending pend, timeout_t timeout=ucommon::Timer::inf)
	Get the status of pending operations. More...
bool	isRouted (void) const
	Return if socket routing is enabled. More...
	operator bool () const
bool	operator! () const
	Operator based testing to see if a socket is currently active.
Socket &	operator= (const Socket &from)
	Sockets may also be duplicated by the assignment operator.
void	setCompletion (bool immediate)
	Used to specify blocking mode for the socket. More...
Error	setKeepAlive (bool enable)
	Set the keep-alive status of this socket and if keep-alive messages will be sent. More...
Error	setLinger (bool linger)
	Enable lingering sockets on close. More...
Error	setTypeOfService (Tos service)
	Set packet scheduling on platforms which support ip quality of service conventions. More...
Protected Member Functions inherited from ucommon::Socket
int	blocking (bool enable)
	Set socket blocking I/O mode. More...
int	broadcast (bool enable)
	Set socket for unicast mode broadcasts. More...
void	cancel (void)
	Cancel pending i/o by shutting down the socket.
bool	ccid (uint8_t id)
	Set ccid of dccp socket. More...
bool	connected (void) const
	Test if socket is connected. More...
int	connectto (struct addrinfo *list)
	Connect our socket to a remote host from an address list. More...
int	disconnect (void)
	Disconnect a connected socket. More...
int	drop (const struct addrinfo *list)
	Drop socket from multicast group. More...
int	err (void) const
	Get error code.
int	getError (void)
	Get socket error code. More...
bool	is_pending (unsigned value) const
	See the number of bytes in the receive queue. More...
int	join (const struct addrinfo *list)
	Join socket to multicast group. More...
int	keepalive (bool enable)
	Set socket for keepalive packets. More...
int	loopback (bool enable)
	Set loopback to read multicast packets we broadcast. More...
int	multicast (unsigned ttl=1)
	Set multicast mode and multicast broadcast range. More...
int	nodelay (void) const
	Set nodelay option for tcp socket. More...
	operator bool ()
	Test if socket is valid. More...
	operator socket_t () const
	Get the socket descriptor by casting. More...
bool	operator! () const
	Test if socket is invalid. More...
socket_t	operator* () const
	Get the socket descriptor by pointer reference. More...
Socket &	operator= (socket_t socket)
	Assign socket from a socket descriptor. More...
size_t	peek (void *data, size_t number) const
	Peek at data waiting in the socket receive buffer. More...
unsigned	pending (void) const
	Get the number of bytes of data in the socket receive buffer. More...
size_t	printf (const char *format,...)
	Print formatted string to socket. More...
int	priority (int scheduling)
	Set packet priority, 0 to 6 unless privileged. More...
size_t	readfrom (void *data, size_t number, struct sockaddr_storage *address=((void *) 0))
	Read data from the socket receive buffer. More...
size_t	readline (char *data, size_t size)
	Read a newline of text data from the socket and save in NULL terminated string. More...
size_t	readline (String &buffer)
	Read a string of input from the socket and strip trailing newline. More...
int	recvsize (unsigned size)
	Set the size of the socket receive buffer. More...
void	release (void)
	Shutdown and close the socket.
unsigned	segsize (unsigned size)
	Set segment size and get mtu of a socket. More...
int	sendsize (unsigned size)
	Set the size of the socket send buffer. More...
int	sendwait (unsigned size)
	Set the size to wait before sending. More...
void	shutdown (void)
	Shutdown the socket communication channel.
	Socket ()
	Create a socket object for use.
	Socket (const Socket &existing)
	Create socket as duped handle of existing socket. More...
	Socket (socket_t socket)
	Create socket from existing socket descriptor. More...
	Socket (struct addrinfo *address)
	Create and connect a socket to an address from an address list. More...
	Socket (int family, int type, int protocol=0)
	Create an unbound socket of a specific type. More...
	Socket (const char *address, const char *port, int family=0, int type=0, int protocol=0)
	Create a bound socket. More...
int	tos (int type)
	Set the type of service field of outgoing packets. More...
int	ttl (unsigned char time)
	Set the time to live before packets expire. More...
int	type (void)
	Get the type of a socket. More...
bool	wait (timeout_t timeout=0) const
	Test for pending input data. More...
int	wait (timeout_t timeout=Timer::inf)
	Socket i/o timer setting. More...
bool	waitSending (timeout_t timeout=0) const
	Test for output data sent. More...
size_t	writes (const char *string)
	Write a null terminated string to the socket. More...
size_t	writeto (const void *data, size_t number, const struct sockaddr *address=((void *) 0))
	Write data to the socket send buffer. More...
virtual	~Socket ()
	Shutdown, close, and destroy socket.

Additional Inherited Members
Protected Types inherited from ost::Socket
typedef enum Error	Error
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 }
typedef enum Family	Family
enum	Family { IPV6 = 1, IPV4 = 2 }
typedef enum Pending	Pending
enum	Pending { pendingInput, pendingOutput, pendingError }
typedef enum State	State
enum	State {   INITIAL, AVAILABLE, BOUND, CONNECTED,   CONNECTING, STREAM }
typedef enum Tos	Tos
enum	Tos {   tosLowDelay = 0, tosThroughput, tosReliability, tosMinCost,   tosInvalid }
Static Protected Member Functions inherited from ost::Socket
static socket_t	dupSocket (socket_t s, Socket::State state)
static bool	check (Family fam)
	See if a specific protocol family is available in the current runtime environment. More...
Static Protected Member Functions inherited from ucommon::Socket
static socket_t	acceptfrom (socket_t socket, struct sockaddr_storage *address=((void *) 0))
	Accept a socket connection from a remote host. More...
static int	bindto (socket_t socket, const char *address, const char *service, int protocol=0)
	Bind the socket descriptor to a known interface and service port. More...
static int	bindto (socket_t socket, const struct sockaddr *address)
	Bind the socket descriptor to a known interface. More...
static int	blocking (socket_t socket, bool enable)
	Set socket blocking I/O mode of socket descriptor. More...
static int	broadcast (socket_t socket, bool enable)
	Set socket for unicast mode broadcasts on socket descriptor. More...
static void	cancel (socket_t socket)
	Cancel pending i/o by shutting down the socket. More...
static bool	ccid (socket_t socket, uint8_t id)
	Set congestion control id. More...
static int	connectto (socket_t socket, struct addrinfo *list)
	Connect socket descriptor to a remote host from an address list. More...
static unsigned	copy (struct sockaddr *target, const struct sockaddr *origin)
	Copy a socket address. More...
static socket_t	create (int family, int type, int protocol)
	Create a socket object unbound. More...
static socket_t	create (const struct addrinfo *address, int type, int protocol)
	Create a connected socket. More...
static socket_t	create (const char *iface, const char *service, int family=0, int type=0, int protocol=0)
	Create a bound socket for a service. More...
static socket_t	create (const Socket::address &address)
	Create a connected socket for a service. More...
static int	disconnect (socket_t socket)
	Disconnect a connected socket descriptor. More...
static int	drop (socket_t socket, const struct addrinfo *list)
	Drop socket descriptor from multicast group. More...
static bool	eq_from (const struct sockaddr_storage *address1, const struct sockaddr_storage *address2)
	Compare socket addresses. More...
static bool	eq_host (const struct sockaddr *address1, const struct sockaddr *address2)
	Compare socket host addresses. More...
static bool	eq_inet (const struct sockaddr_internet *address1, const struct sockaddr_internet *address2)
	Compare socket addresses. More...
static bool	eq_subnet (const struct sockaddr *address1, const struct sockaddr *address2)
	See if both addresses are in the same subnet. More...
static bool	equal (const struct sockaddr *address1, const struct sockaddr *address2)
	Compare socket addresses. More...
static int	error (socket_t socket)
	Get socket error code of socket descriptor. More...
static int	error (void)
	Return error code of last socket operation,. More...
static int	family (socket_t socket)
	Get the address family of the socket descriptor. More...
static int	family (const struct sockaddr_storage &address)
	Get the address family of a socket address object. More...
static int	family (const struct sockaddr_internet &address)
	Get the address family of an internet socket address object. More...
static struct addrinfo *	hinting (socket_t socket, struct addrinfo *hint)
	Create an address info lookup hint based on the family and type properties of a socket descriptor. More...
static char *	hostname (const struct sockaddr *address, char *buffer, size_t size)
	Lookup and return the host name associated with a socket address. More...
static void	init (void)
	Initialize socket subsystem.
static void	init (const char *program)
	Initialize with program name. More...
static bool	is_null (const char *string)
	Simple function to validate that a given IP address string is a "zero" address. More...
static bool	is_numeric (const char *string)
	Simple function to validate that a given IP address string is a numeric address. More...
static int	join (socket_t socket, const struct addrinfo *list)
	Join socket descriptor to multicast group. More...
static int	keepalive (socket_t socket, bool enable)
	Set socket for keepalive packets for socket descriptor. More...
static unsigned	keyhost (const struct sockaddr *address, unsigned size)
	Convert a socket host address into a hash map index. More...
static unsigned	keyindex (const struct sockaddr *address, unsigned size)
	Convert a socket address and service into a hash map index. More...
static socklen_t	len (const struct sockaddr *address)
	Get the size of a socket address. More...
static int	listento (socket_t socket, const struct sockaddr *address, int backlog=5)
	Bind the socket descriptor to a known interface listen on service port. More...
static int	local (socket_t socket, struct sockaddr_storage *address)
	Get local address to which the socket is bound. More...
static int	loopback (socket_t socket, bool enable)
	Set loopback to read multicast packets socket descriptor broadcasts. More...
static int	multicast (socket_t socket, unsigned ttl=1)
	Set multicast mode and multicast broadcast range for socket descriptor. More...
static int	nodelay (socket_t socket)
	Set tcp nodelay option on socket descriptor. More...
static unsigned	pending (socket_t socket)
	Get the number of bytes pending in the receive buffer of a socket descriptor. More...
static ssize_t	printf (socket_t socket, const char *format,...)
	Print formatted string to socket. More...
static int	priority (socket_t socket, int scheduling)
	Set packet priority of socket descriptor. More...
static struct addrinfo *	query (const char *host, const char *service, int type=SOCK_STREAM, int protocol=0)
	Get an address list directly. More...
static socklen_t	query (socket_t socket, struct sockaddr_storage *address, const char *hostname, const char *service)
	Lookup a host name and service address based on the addressing family and socket type of a socket descriptor. More...
static char *	query (const struct sockaddr *address, char *buffer, socklen_t size)
	Get the hostname of a socket address. More...
static void	query (int family)
	Set default socket family preference for query options when the socket type is otherwise not specified. More...
static ssize_t	readline (socket_t socket, char *data, size_t size, timeout_t timeout=Timer::inf)
	Read a newline of text data from the socket and save in NULL terminated string. More...
static ssize_t	recvfrom (socket_t socket, void *buffer, size_t size, int flags=0, struct sockaddr_storage *address=((void *) 0))
	Get data waiting in receive queue. More...
static ssize_t	recvinet (socket_t socket, void *buffer, size_t size, int flags=0, struct sockaddr_internet *address=((void *) 0))
	Get internet data waiting in receive queue. More...
static int	recvsize (socket_t socket, unsigned size)
	Set the receive size of a socket descriptor. More...
static void	release (struct addrinfo *list)
	Release an address list directly. More...
static void	release (socket_t socket)
	Release (close) a socket. More...
static int	remote (socket_t socket, struct sockaddr_storage *address)
	Get remote address to which the socket is connected. More...
static ssize_t	replyto (socket_t socket, const void *buffer, size_t size, int flags, const struct sockaddr_storage *address)
	Send reply on socket. More...
static unsigned	segsize (socket_t socket, unsigned size=0)
	Set segment size and get MTU. More...
static ssize_t	sendinet (socket_t socket, const void *buffer, size_t size, int flags, const struct sockaddr_internet *address)
	Send to internet socket. More...
static int	sendsize (socket_t socket, unsigned size)
	Set the send size of a socket descriptor. More...
static ssize_t	sendto (socket_t socket, const void *buffer, size_t size, int flags=0, const struct sockaddr *address=((void *) 0))
	Send data on socket. More...
static int	sendwait (socket_t socket, unsigned size)
	Set the size to wait before sending. More...
static short	service (const struct sockaddr *address)
	Get the service port of a socket. More...
static short	service (const struct sockaddr_internet *address)
	Get the service port of an inet socket. More...
static unsigned	store (struct sockaddr_storage *storage, const struct sockaddr *address)
	Store an address into an address object. More...
static unsigned	store (struct sockaddr_internet *storage, const struct sockaddr *address)
	Store an address into an internet address object. More...
static int	tos (socket_t socket, int type)
	Set type of service of socket descriptor. More...
static int	ttl (socket_t socket, unsigned char time)
	Set the time to live for the socket descriptor. More...
static int	type (socket_t socket)
	Get the type of a socket. More...
static void	v4mapping (bool enable)
	Set the default socket behavior for v6-v4 mapping. More...
static int	via (struct sockaddr *address, const struct sockaddr *destination)
	Get the socket address of the interface needed to reach a destination address. More...
static bool	wait (socket_t socket, timeout_t timeout=0)
	Test for pending input data. More...
Protected Attributes inherited from ost::UDPSocket
Family	family
union {
struct sockaddr_in   ipv4
struct sockaddr_in6   ipv6
}	peer
Protected Attributes inherited from ost::Socket
struct {
bool   broadcast: 1
bool   completion: 1
bool   keepalive: 1
bool   linger: 1
bool   loopback: 1
bool   multicast: 1
bool   route: 1
bool   thrown: 1
unsigned   ttl: 8
}	flags
State volatile	state
Protected Attributes inherited from ucommon::Socket
int	ioerr
timeout_t	iowait
socket_t	so
Static Protected Attributes inherited from ost::Socket
static Mutex	mutex

Detailed Description

Representing half of a two-way UDP connection, the UDP transmitter can broadcast data to another selected peer host or to an entire subnet.

Author

David Sugar dyfet.nosp@m.@ost.nosp@m.el.co.nosp@m.m Unreliable Datagram Peer Associations.

Definition at line 300 of file udp.h.

Constructor & Destructor Documentation

ost::UDPTransmit::UDPTransmit ( const IPV4Address &  bind, tpport_t  port = 5005  )

protected

Create a UDP transmitter, bind it to a specific interface and port address so that other UDP sockets on remote machines (or the same host) may find and send UDP messages to it, and associate it with a given port on a peer host.

On failure to bind, an exception is thrown. This class is only used to build the UDP Duplex.

Parameters

bind	address to bind this socket to.
port	number to bind this socket to.

Member Function Documentation

Error ost::UDPTransmit::connect ( const IPV4Host &  host, tpport_t  port  )

protected

Associate this socket with a specified peer host.

The port number from the constructor will be used. All UDP packets will be sent to and received from the specified host.

Returns

0 on success, -1 on error.

Parameters

host	address to connect socket to.
port	to connect socket to.

Error ost::UDPTransmit::connect ( const IPV4Broadcast &  subnet, tpport_t  port  )

protected

Associate this socket with a subnet of peer hosts for subnet broadcasting.

The server must be able to assert broadcast permission for the socket.

Returns

0 on success, -1 on error.

Parameters

subnet	subnet address to broadcast into.
port	transport port to broadcast into.

Error ost::UDPTransmit::connect ( const IPV4Multicast &  mgroup, tpport_t  port  )

protected

Associate this socket with a multicast group.

Returns

0 on success, -1 on error.

Parameters

mgroup	address of the multicast group to send to.
port	port number

bool ost::UDPTransmit::isOutputReady ( unsigned long  timeout = 0l )

inline

See if output queue is empty for sending more packets.

Returns

true if output available.

Parameters

timeout

in milliseconds to wait.

Definition at line 420 of file udp.h.

ssize_t ost::UDPTransmit::send ( const void *  buf, size_t  len  )

inlineprotected

Transmit "send" to use "connected" send rather than sendto.

Returns

number of bytes sent.

Parameters

buf	address of buffer to send.
len	of bytes to send.

Definition at line 378 of file udp.h.

ssize_t ost::UDPTransmit::transmit ( const char *  buffer, size_t  len  )

inline

Transmit "send" to use "connected" send rather than sendto.

Note

Windows does not support MSG_DONTWAIT, so it is defined as 0 on that platform.

Returns

number of bytes sent.

Parameters

buffer	address of buffer to send.
len	of bytes to send.

Definition at line 411 of file udp.h.

---

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

• commoncpp/udp.h