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ost::UDPTransmit(3) Library Functions Manual ost::UDPTransmit(3)

NAME

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

SYNOPSIS

#include <socket.h>

Inherits ost::UDPSocket.

Inherited by ost::UDPDuplex.

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)

Additional Inherited Members

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

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

ost::UDPTransmit::UDPTransmit (const IPV6Address & bind, tpport_t port = 5005) [protected]

Member Function Documentation

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 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 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

Error ost::UDPTransmit::connect (const IPV6Address & host, tpport_t port) [protected]

Error ost::UDPTransmit::connect (const IPV6Multicast & mgroup, tpport_t port) [protected]

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

timeout in 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

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

References _IOLEN64, and MSG_NOSIGNAL.

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

References ost::Socket::setBroadcast().

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

References ost::Socket::setMulticastByFamily().

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

References ost::Socket::setRouting().

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

References ost::Socket::setTimeToLiveByFamily().

Error ost::UDPTransmit::setTypeOfService (Tos tos) [inline]

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

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

References _IOLEN64, MSG_DONTWAIT, and MSG_NOSIGNAL.

Author

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Sun Dec 27 2020 GNU CommonC++