CSL  5.2
UDPSocket Class Reference

#include <PracticalSocket.h>

+ Inheritance diagram for UDPSocket:

List of all members.

Public Member Functions

 UDPSocket () throw (SocketException)
 UDPSocket (unsigned short localPort) throw (SocketException)
 UDPSocket (const string &localAddress, unsigned short localPort) throw (SocketException)
void disconnect () throw (SocketException)
void sendTo (const void *buffer, int bufferLen, const string &foreignAddress, unsigned short foreignPort) throw (SocketException)
int recvFrom (void *buffer, int bufferLen, string &sourceAddress, unsigned short &sourcePort) throw (SocketException)
void setMulticastTTL (unsigned char multicastTTL) throw (SocketException)
void joinGroup (const string &multicastGroup) throw (SocketException)
void leaveGroup (const string &multicastGroup) throw (SocketException)
void connect (const string &foreignAddress, unsigned short foreignPort) throw (SocketException)
void send (const void *buffer, int bufferLen) throw (SocketException)
int recv (void *buffer, int bufferLen) throw (SocketException)
string getForeignAddress () throw (SocketException)
unsigned short getForeignPort () throw (SocketException)
string getLocalAddress () throw (SocketException)
unsigned short getLocalPort () throw (SocketException)
void setLocalPort (unsigned short localPort) throw (SocketException)
void setLocalAddressAndPort (const string &localAddress, unsigned short localPort=0) throw (SocketException)

Static Public Member Functions

static void cleanUp () throw (SocketException)
static unsigned short resolveService (const string &service, const string &protocol="tcp")

Protected Attributes

int sockDesc

Private Member Functions

void setBroadcast ()

Detailed Description

UDP socket class

Definition at line 256 of file PracticalSocket.h.


Constructor & Destructor Documentation

UDPSocket::UDPSocket ( ) throw (SocketException)

Construct a UDP socket

Exceptions:
SocketExceptionthrown if unable to create UDP socket

Definition at line 283 of file PracticalSocket.cpp.

References setBroadcast().

UDPSocket::UDPSocket ( unsigned short  localPort) throw (SocketException)

Construct a UDP socket with the given local port

Parameters:
localPortlocal port
Exceptions:
SocketExceptionthrown if unable to create UDP socket

Definition at line 288 of file PracticalSocket.cpp.

UDPSocket::UDPSocket ( const string &  localAddress,
unsigned short  localPort 
) throw (SocketException)

Construct a UDP socket with the given local port and address

Parameters:
localAddresslocal address
localPortlocal port
Exceptions:
SocketExceptionthrown if unable to create UDP socket

Definition at line 294 of file PracticalSocket.cpp.


Member Function Documentation

void UDPSocket::disconnect ( ) throw (SocketException)

Unset foreign address and port

Returns:
true if disassociation is successful
Exceptions:
SocketExceptionthrown if unable to disconnect UDP socket

Definition at line 308 of file PracticalSocket.cpp.

References CommunicatingSocket::connect(), and Socket::sockDesc.

void UDPSocket::sendTo ( const void *  buffer,
int  bufferLen,
const string &  foreignAddress,
unsigned short  foreignPort 
) throw (SocketException)

Send the given buffer as a UDP datagram to the specified address/port

Parameters:
bufferbuffer to be written
bufferLennumber of bytes to write
foreignAddressaddress (IP address or name) to send to
foreignPortport number to send to
Returns:
true if send is successful
Exceptions:
SocketExceptionthrown if unable to send datagram

Definition at line 325 of file PracticalSocket.cpp.

References fillAddr(), and Socket::sockDesc.

Referenced by Controller::get_remote_data().

int UDPSocket::recvFrom ( void *  buffer,
int  bufferLen,
string &  sourceAddress,
unsigned short &  sourcePort 
) throw (SocketException)

Read read up to bufferLen bytes data from this socket. The given buffer is where the data will be placed

Parameters:
bufferbuffer to receive data
bufferLenmaximum number of bytes to receive
sourceAddressaddress of datagram source
sourcePortport of data source
Returns:
number of bytes received and -1 for error
Exceptions:
SocketExceptionthrown if unable to receive datagram

Definition at line 338 of file PracticalSocket.cpp.

References Socket::sockDesc.

Referenced by Controller::get_remote_data().

void UDPSocket::setMulticastTTL ( unsigned char  multicastTTL) throw (SocketException)

Set the multicast TTL

Parameters:
multicastTTLmulticast TTL
Exceptions:
SocketExceptionthrown if unable to set TTL

Definition at line 353 of file PracticalSocket.cpp.

References Socket::sockDesc.

void UDPSocket::joinGroup ( const string &  multicastGroup) throw (SocketException)

Join the specified multicast group

Parameters:
multicastGroupmulticast group address to join
Exceptions:
SocketExceptionthrown if unable to join group

Definition at line 360 of file PracticalSocket.cpp.

References Socket::sockDesc.

void UDPSocket::leaveGroup ( const string &  multicastGroup) throw (SocketException)

Leave the specified multicast group

Parameters:
multicastGroupmulticast group address to leave
Exceptions:
SocketExceptionthrown if unable to leave group

Definition at line 372 of file PracticalSocket.cpp.

References Socket::sockDesc.

void UDPSocket::setBroadcast ( )
private

Definition at line 300 of file PracticalSocket.cpp.

References Socket::sockDesc.

Referenced by UDPSocket().

void CommunicatingSocket::connect ( const string &  foreignAddress,
unsigned short  foreignPort 
) throw (SocketException)
inherited

Attempt to establish a socket connection with the given foreign address and port

Parameters:
foreignAddressforeign address (IP address or name)
foreignPortforeign port
Returns:
true if connection successfully established
Exceptions:
SocketExceptionthrown if unable to establish connection

Definition at line 186 of file PracticalSocket.cpp.

References fillAddr().

Referenced by disconnect().

void CommunicatingSocket::send ( const void *  buffer,
int  bufferLen 
) throw (SocketException)
inherited

Write the given buffer to this socket. Call connect() before calling send()

Parameters:
bufferbuffer to be written
bufferLennumber of bytes from buffer to be written
Returns:
true if the send is successful
Exceptions:
SocketExceptionthrown if unable to send data

Definition at line 198 of file PracticalSocket.cpp.

int CommunicatingSocket::recv ( void *  buffer,
int  bufferLen 
) throw (SocketException)
inherited

Read into the given buffer up to bufferLen bytes data from this socket. Call connect() before calling recv()

Parameters:
bufferbuffer to receive the data
bufferLenmaximum number of bytes to read into buffer
Returns:
number of bytes read, 0 for EOF, and -1 for error
Exceptions:
SocketExceptionthrown if unable to receive data

Definition at line 205 of file PracticalSocket.cpp.

string CommunicatingSocket::getForeignAddress ( ) throw (SocketException)
inherited

Get the foreign address. Call connect() before calling recv()

Returns:
foreign address
Exceptions:
SocketExceptionthrown if unable to fetch foreign address

Definition at line 215 of file PracticalSocket.cpp.

References Socket::sockDesc.

unsigned short CommunicatingSocket::getForeignPort ( ) throw (SocketException)
inherited

Get the foreign port. Call connect() before calling recv()

Returns:
foreign port
Exceptions:
SocketExceptionthrown if unable to fetch foreign port

Definition at line 226 of file PracticalSocket.cpp.

References Socket::sockDesc.

string Socket::getLocalAddress ( ) throw (SocketException)
inherited

Get the local address

Returns:
local address of socket
Exceptions:
SocketExceptionthrown if fetch fails

Definition at line 115 of file PracticalSocket.cpp.

unsigned short Socket::getLocalPort ( ) throw (SocketException)
inherited

Get the local port

Returns:
local port of socket
Exceptions:
SocketExceptionthrown if fetch fails

Definition at line 125 of file PracticalSocket.cpp.

void Socket::setLocalPort ( unsigned short  localPort) throw (SocketException)
inherited

Set the local port to the specified port and the local address to any interface

Parameters:
localPortlocal port
Exceptions:
SocketExceptionthrown if setting local port fails

Definition at line 135 of file PracticalSocket.cpp.

void Socket::setLocalAddressAndPort ( const string &  localAddress,
unsigned short  localPort = 0 
) throw (SocketException)
inherited

Set the local port to the specified port and the local address to the specified address. If you omit the port, a random port will be selected.

Parameters:
localAddresslocal address
localPortlocal port
Exceptions:
SocketExceptionthrown if setting local port or address fails

Definition at line 148 of file PracticalSocket.cpp.

References fillAddr().

void Socket::cleanUp ( ) throw (SocketException)
staticinherited

If WinSock, unload the WinSock DLLs; otherwise do nothing. We ignore this in our sample client code but include it in the library for completeness. If you are running on Windows and you are concerned about DLL resource consumption, call this after you are done with all Socket instances. If you execute this on Windows while some instance of Socket exists, you are toast. For portability of client code, this is an empty function on non-Windows platforms so you can always include it.

Parameters:
bufferbuffer to receive the data
bufferLenmaximum number of bytes to read into buffer
Returns:
number of bytes read, 0 for EOF, and -1 for error
Exceptions:
SocketExceptionthrown WinSock clean up fails

Definition at line 159 of file PracticalSocket.cpp.

unsigned short Socket::resolveService ( const string &  service,
const string &  protocol = "tcp" 
)
staticinherited

Resolve the specified service for the specified protocol to the corresponding port number in host byte order

Parameters:
serviceservice to resolve (e.g., "http")
protocolprotocol of service to resolve. Default is "tcp".

Definition at line 167 of file PracticalSocket.cpp.


Member Data Documentation


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