GNU CommonC++
Public Member Functions | Protected Member Functions

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 <socket.h>

Inheritance diagram for ost::UDPTransmit:
ost::UDPSocket ost::Socket ost::UDPDuplex

List of all members.

Public Member Functions

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

Protected Member Functions

 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.
 UDPTransmit (const IPV6Address &bind, tpport_t port=5005)
Error connect (const IPV4Host &host, tpport_t port)
 Associate this socket with a specified peer host.
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.
Error connect (const IPV4Multicast &mgroup, tpport_t port)
 Associate this socket with a multicast group.
Error connect (const IPV6Multicast &mgroup, tpport_t port)
ssize_t send (const void *buf, size_t len)
 Transmit "send" to use "connected" send rather than sendto.
void endTransmitter (void)
 Stop transmitter.
SOCKET getTransmitter (void)
Error setMulticast (bool enable)
Error setTimeToLive (unsigned char ttl)

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@ostel.com> Unreliable Datagram Peer Associations.

Constructor & Destructor Documentation

ost::UDPTransmit::UDPTransmit ( Family  family = IPV4) [protected]

Create a UDP transmitter.

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:
bindaddress to bind this socket to.
portnumber to bind this socket to.
ost::UDPTransmit::UDPTransmit ( const IPV6Address bind,
tpport_t  port = 5005 
) [protected]

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:
hostaddress to connect socket to.
portto connect socket to.

Reimplemented from ost::UDPSocket.

Reimplemented in ost::UDPDuplex.

Error ost::UDPTransmit::connect ( const IPV6Address host,
tpport_t  port 
) [protected]
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:
mgroupaddress of the multicast group to send to.
portport number
Error ost::UDPTransmit::connect ( const IPV6Multicast mgroup,
tpport_t  port 
) [protected]
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:
subnetsubnet address to broadcast into.
porttransport port to broadcast into.
void ost::UDPTransmit::endTransmitter ( void  ) [inline, protected]

Stop transmitter.

References ost::Socket::endSocket().

SOCKET ost::UDPTransmit::getTransmitter ( void  ) [inline, protected]
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:
timeoutin milliseconds to wait.

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

ssize_t ost::UDPTransmit::send ( const void *  buf,
size_t  len 
) [inline, protected]

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

Returns:
number of bytes sent.
Parameters:
bufaddress of buffer to send.
lenof bytes to send.

Reimplemented from ost::UDPSocket.

References _IOLEN64, and MSG_NOSIGNAL.

Error ost::UDPTransmit::setBroadcast ( bool  enable) [inline]

Reimplemented from ost::Socket.

References ost::Socket::setBroadcast().

Error ost::UDPTransmit::setMulticast ( bool  enable) [inline, protected]

Reimplemented from ost::UDPSocket.

References ost::Socket::setMulticastByFamily().

Error ost::UDPTransmit::setRouting ( bool  enable) [inline]

Reimplemented from ost::Socket.

References ost::Socket::setRouting().

Error ost::UDPTransmit::setTimeToLive ( unsigned char  ttl) [inline, protected]
Error ost::UDPTransmit::setTypeOfService ( Tos  tos) [inline]

Reimplemented from ost::Socket.

References ost::Socket::setTypeOfService().

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:
bufferaddress of buffer to send.
lenof bytes to send.

References _IOLEN64, MSG_DONTWAIT, and MSG_NOSIGNAL.


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