A wrapper for a streaming (TCP) socket. More...

#include "juce_Socket.h"

Public Types
using	Options = SocketOptions

Public Member Functions
	StreamingSocket ()
	Creates an uninitialised socket.

	StreamingSocket (const SocketOptions &optionsIn)
	Creates an uninitialised socket and allows specifying options related to the configuration of the underlying socket.

	~StreamingSocket ()
	Destructor.

bool	bindToPort (int localPortNumber)
	Binds the socket to the specified local port.

bool	bindToPort (int localPortNumber, const String &localAddress)
	Binds the socket to the specified local port and local address.

int	getBoundPort () const noexcept
	Returns the local port number to which this socket is currently bound.

bool	connect (const String &remoteHostname, int remotePortNumber, int timeOutMillisecs=3000)
	Tries to connect the socket to hostname:port.

bool	isConnected () const noexcept
	True if the socket is currently connected.

void	close ()
	Closes the connection.

const String &	getHostName () const noexcept
	Returns the name of the currently connected host.

int	getPort () const noexcept
	Returns the port number that's currently open.

bool	isLocal () const noexcept
	True if the socket is connected to this machine rather than over the network.

int	getRawSocketHandle () const noexcept
	Returns the OS's socket handle that's currently open.

int	waitUntilReady (bool readyForReading, int timeoutMsecs)
	Waits until the socket is ready for reading or writing.

int	read (void *destBuffer, int maxBytesToRead, bool blockUntilSpecifiedAmountHasArrived)
	Reads bytes from the socket.

int	write (const void *sourceBuffer, int numBytesToWrite)
	Writes bytes to the socket from a buffer.

bool	createListener (int portNumber, const String &localHostName=String())
	Puts this socket into "listener" mode.

StreamingSocket *	waitForNextConnection () const
	When in "listener" mode, this waits for a connection and spawns it as a new socket.

Detailed Description

A wrapper for a streaming (TCP) socket.

This allows low-level use of sockets; for an easier-to-use messaging layer on top of sockets, you could also try the InterprocessConnection class.

See also: DatagramSocket, InterprocessConnection, InterprocessConnectionServer

@tags{Core}

Definition at line 81 of file juce_Socket.h.

Member Typedef Documentation

◆ Options

using juce::StreamingSocket::Options = SocketOptions

Definition at line 84 of file juce_Socket.h.

Constructor & Destructor Documentation

◆ StreamingSocket() [1/2]

juce::StreamingSocket::StreamingSocket ( )

Creates an uninitialised socket.

To connect it, use the connect() method, after which you can read() or write() to it.

To wait for other sockets to connect to this one, the createListener() method enters "listener" mode, and can be used to spawn new sockets for each connection that comes along.

Definition at line 484 of file juce_Socket.cpp.

◆ StreamingSocket() [2/2]

juce::StreamingSocket::StreamingSocket ( const SocketOptions & optionsIn )

explicit

Creates an uninitialised socket and allows specifying options related to the configuration of the underlying socket.

To connect it, use the connect() method, after which you can read() or write() to it.

To wait for other sockets to connect to this one, the createListener() method enters "listener" mode, and can be used to spawn new sockets for each connection that comes along.

Definition at line 108 of file juce_Socket.h.

◆ ~StreamingSocket()

juce::StreamingSocket::~StreamingSocket ( )

Destructor.

Definition at line 502 of file juce_Socket.cpp.

Member Function Documentation

◆ bindToPort() [1/2]

bool juce::StreamingSocket::bindToPort ( int localPortNumber )

Binds the socket to the specified local port.

Returns: true on success; false may indicate that another socket is already bound on the same port

Definition at line 531 of file juce_Socket.cpp.

◆ bindToPort() [2/2]

bool juce::StreamingSocket::bindToPort	(	int	localPortNumber,
		const String &	localAddress
	)

Binds the socket to the specified local port and local address.

If localAddress is not an empty string then the socket will be bound to localAddress as well. This is useful if you would like to bind your socket to a specific network adapter. Note that localAddress must be an IP address assigned to one of your network address otherwise this function will fail.

Returns: true on success; false may indicate that another socket is already bound on the same port

See also: bindToPort (int localPortNumber), IPAddress::getAllAddresses

Definition at line 536 of file juce_Socket.cpp.

◆ close()

void juce::StreamingSocket::close ( )

Closes the connection.

Definition at line 581 of file juce_Socket.cpp.

◆ connect()

bool juce::StreamingSocket::connect	(	const String &	remoteHostname,
		int	remotePortNumber,
		int	timeOutMillisecs = `3000`
	)

Tries to connect the socket to hostname:port.

If timeOutMillisecs is 0, then this method will block until the operating system rejects the connection (which could take a long time).

Returns: true if it succeeds, false if otherwise

See also: isConnected

Definition at line 548 of file juce_Socket.cpp.

◆ createListener()

bool juce::StreamingSocket::createListener	(	int	portNumber,
		const String &	localHostName = `String()`
	)

Puts this socket into "listener" mode.

When in this mode, your thread can call waitForNextConnection() repeatedly, which will spawn new sockets for each new connection, so that these can be handled in parallel by other threads.

Parameters

portNumber	the port number to listen on
localHostName	the interface address to listen on - pass an empty string to listen on all addresses

Returns: true if it manages to open the socket successfully

See also: waitForNextConnection

Definition at line 593 of file juce_Socket.cpp.

◆ getBoundPort()

int juce::StreamingSocket::getBoundPort ( ) const

noexcept

Returns the local port number to which this socket is currently bound.

This is useful if you need to know to which port the OS has actually bound your socket when calling the constructor or bindToPort with zero as the localPortNumber argument.

Returns: -1 if the function fails

Definition at line 543 of file juce_Socket.cpp.

◆ getHostName()

const String & juce::StreamingSocket::getHostName ( ) const

noexcept

Returns the name of the currently connected host.

Definition at line 165 of file juce_Socket.h.

◆ getPort()

int juce::StreamingSocket::getPort ( ) const

noexcept

Returns the port number that's currently open.

Definition at line 168 of file juce_Socket.h.

◆ getRawSocketHandle()

int juce::StreamingSocket::getRawSocketHandle ( ) const

noexcept

Returns the OS's socket handle that's currently open.

Definition at line 174 of file juce_Socket.h.

◆ isConnected()

bool juce::StreamingSocket::isConnected ( ) const

noexcept

True if the socket is currently connected.

Definition at line 159 of file juce_Socket.h.

◆ isLocal()

bool juce::StreamingSocket::isLocal ( ) const

noexcept

True if the socket is connected to this machine rather than over the network.

Definition at line 644 of file juce_Socket.cpp.

◆ read()

int juce::StreamingSocket::read	(	void *	destBuffer,
		int	maxBytesToRead,
		bool	blockUntilSpecifiedAmountHasArrived
	)

Reads bytes from the socket.

If blockUntilSpecifiedAmountHasArrived is true, the method will block until maxBytesToRead bytes have been read, (or until an error occurs). If this flag is false, the method will return as much data as is currently available without blocking.

Returns: the number of bytes read, or -1 if there was an error

See also: waitUntilReady

Definition at line 508 of file juce_Socket.cpp.

◆ waitForNextConnection()

StreamingSocket * juce::StreamingSocket::waitForNextConnection ( ) const

When in "listener" mode, this waits for a connection and spawns it as a new socket.

The object that gets returned will be owned by the caller.

This method can only be called after using createListener().

See also: createListener

Definition at line 624 of file juce_Socket.cpp.

◆ waitUntilReady()

int juce::StreamingSocket::waitUntilReady	(	bool	readyForReading,
		int	timeoutMsecs
	)

Waits until the socket is ready for reading or writing.

If readyForReading is true, it will wait until the socket is ready for reading; if false, it will wait until it's ready for writing.

If the timeout is < 0, it will wait forever, or else will give up after the specified time.

Returns: 1 if the socket is ready on return, 0 if it times-out before the socket becomes ready, or -1 if an error occurs

Definition at line 524 of file juce_Socket.cpp.

◆ write()

int juce::StreamingSocket::write	(	const void *	sourceBuffer,
		int	numBytesToWrite
	)

Writes bytes to the socket from a buffer.

Note that this method will block unless you have checked the socket is ready for writing before calling it (see the waitUntilReady() method).

Returns: the number of bytes written, or -1 if there was an error

Definition at line 515 of file juce_Socket.cpp.

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

juce_core/network/juce_Socket.h
juce_core/network/juce_Socket.cpp

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ Options

Constructor & Destructor Documentation

◆ StreamingSocket() [1/2]

◆ StreamingSocket() [2/2]

◆ ~StreamingSocket()

Member Function Documentation

◆ bindToPort() [1/2]

◆ bindToPort() [2/2]

◆ close()

◆ connect()

◆ createListener()

◆ getBoundPort()

◆ getHostName()

◆ getPort()

◆ getRawSocketHandle()

◆ isConnected()

◆ isLocal()

◆ read()

◆ waitForNextConnection()

◆ waitUntilReady()

◆ write()