TCP handle. More...

#include <wpinet/uv/Tcp.h>

Inheritance diagram for wpi::uv::Tcp:

Public Types
using	Time = std::chrono::duration< uint64_t, std::milli >

Public Types inherited from wpi::uv::Handle
using	Type = uv_handle_type

Public Member Functions
	Tcp (const private_init &)

	~Tcp () noexcept override=default

void	Reuse (std::function< void()> callback, unsigned int flags=AF_UNSPEC)
	Reuse this handle. More...

std::shared_ptr< Tcp >	Accept ()
	Accept incoming connection. More...

bool	Accept (const std::shared_ptr< Tcp > &client)
	Accept incoming connection. More...

void	Open (uv_os_sock_t sock)
	Open an existing file descriptor or SOCKET as a TCP handle. More...

bool	SetNoDelay (bool enable)
	Enable no delay operation (turns off Nagle's algorithm). More...

bool	SetKeepAlive (bool enable, Time time=Time{0})
	Enable/Disable TCP keep-alive. More...

bool	SetSimultaneousAccepts (bool enable)
	Enable/Disable simultaneous asynchronous accept requests. More...

void	Bind (const sockaddr &addr, unsigned int flags=0)
	Bind the handle to an IPv4 or IPv6 address and port. More...

void	Bind (const sockaddr_in &addr, unsigned int flags=0)

void	Bind (const sockaddr_in6 &addr, unsigned int flags=0)

void	Bind (std::string_view ip, unsigned int port, unsigned int flags=0)
	Bind the handle to an IPv4 address and port. More...

void	Bind6 (std::string_view ip, unsigned int port, unsigned int flags=0)
	Bind the handle to an IPv6 address and port. More...

sockaddr_storage	GetSock ()
	Get the current address to which the handle is bound. More...

sockaddr_storage	GetPeer ()
	Get the address of the peer connected to the handle. More...

void	Connect (const sockaddr &addr, const std::shared_ptr< TcpConnectReq > &req)
	Establish an IPv4 or IPv6 TCP connection. More...

void	Connect (const sockaddr_in &addr, const std::shared_ptr< TcpConnectReq > &req)

void	Connect (const sockaddr_in6 &addr, const std::shared_ptr< TcpConnectReq > &req)

void	Connect (const sockaddr &addr, std::function< void()> callback)
	Establish an IPv4 or IPv6 TCP connection. More...

void	Connect (const sockaddr_in &addr, std::function< void()> callback)

void	Connect (const sockaddr_in6 &addr, std::function< void()> callback)

void	Connect (std::string_view ip, unsigned int port, const std::shared_ptr< TcpConnectReq > &req)
	Establish an IPv4 TCP connection. More...

void	Connect (std::string_view ip, unsigned int port, std::function< void()> callback)
	Establish an IPv4 TCP connection. More...

void	Connect6 (std::string_view ip, unsigned int port, const std::shared_ptr< TcpConnectReq > &req)
	Establish an IPv6 TCP connection. More...

void	Connect6 (std::string_view ip, unsigned int port, std::function< void()> callback)
	Establish an IPv6 TCP connection. More...

void	CloseReset ()
	Resets a TCP connection by sending a RST packet. More...

Public Member Functions inherited from wpi::uv::NetworkStreamImpl< Tcp, uv_tcp_t >
std::shared_ptr< Tcp >	shared_from_this ()

std::shared_ptr< const Tcp >	shared_from_this () const

uv_tcp_t *	GetRaw () const noexcept
	Get the underlying handle data structure. More...

Public Member Functions inherited from wpi::uv::NetworkStream
std::shared_ptr< NetworkStream >	shared_from_this ()

std::shared_ptr< const NetworkStream >	shared_from_this () const

void	Listen (int backlog=kDefaultBacklog)
	Start listening for incoming connections. More...

void	Listen (std::function< void()> callback, int backlog=kDefaultBacklog)
	Start listening for incoming connections. More...

std::shared_ptr< NetworkStream >	Accept ()
	Accept incoming connection. More...

bool	Accept (const std::shared_ptr< NetworkStream > &client)
	Accept incoming connection. More...

Public Member Functions inherited from wpi::uv::Stream
std::shared_ptr< Stream >	shared_from_this ()

std::shared_ptr< const Stream >	shared_from_this () const

void	Shutdown (const std::shared_ptr< ShutdownReq > &req)
	Shutdown the outgoing (write) side of a duplex stream. More...

void	Shutdown (std::function< void()> callback=nullptr)
	Shutdown the outgoing (write) side of a duplex stream. More...

void	StartRead ()
	Start reading data from an incoming stream. More...

void	StopRead ()
	Stop reading data from the stream. More...

void	Write (std::span< const Buffer > bufs, const std::shared_ptr< WriteReq > &req)
	Write data to the stream. More...

void	Write (std::initializer_list< Buffer > bufs, const std::shared_ptr< WriteReq > &req)
	Write data to the stream. More...

void	Write (std::span< const Buffer > bufs, std::function< void(std::span< Buffer >, Error)> callback)
	Write data to the stream. More...

void	Write (std::initializer_list< Buffer > bufs, std::function< void(std::span< Buffer >, Error)> callback)
	Write data to the stream. More...

int	TryWrite (std::span< const Buffer > bufs)
	Queue a write request if it can be completed immediately. More...

int	TryWrite (std::initializer_list< Buffer > bufs)
	Queue a write request if it can be completed immediately. More...

int	TryWrite2 (std::span< const Buffer > bufs, Stream &send)
	Same as TryWrite() and extended write function for sending handles over a pipe. More...

int	TryWrite2 (std::initializer_list< Buffer > bufs, Stream &send)
	Same as TryWrite() and extended write function for sending handles over a pipe. More...

bool	IsReadable () const noexcept
	Check if the stream is readable. More...

bool	IsWritable () const noexcept
	Checks if the stream is writable. More...

bool	SetBlocking (bool enable) noexcept
	Enable or disable blocking mode for a stream. More...

size_t	GetWriteQueueSize () const noexcept
	Gets the amount of queued bytes waiting to be sent. More...

uv_stream_t *	GetRawStream () const noexcept
	Get the underlying stream data structure. More...

Public Member Functions inherited from wpi::uv::Handle
	Handle (const Handle &)=delete

	Handle (Handle &&)=delete

Handle &	operator= (const Handle &)=delete

Handle &	operator= (Handle &&)=delete

virtual	~Handle () noexcept

Type	GetType () const noexcept
	Get the type of the handle. More...

std::string_view	GetTypeName () const noexcept
	Get the name of the type of the handle. More...

std::shared_ptr< Loop >	GetLoop () const noexcept
	Get the loop where this handle runs. More...

Loop &	GetLoopRef () const noexcept
	Get the loop where this handle runs. More...

bool	IsActive () const noexcept
	Check if the handle is active. More...

bool	IsClosing () const noexcept
	Check if a handle is closing or closed. More...

void	Close () noexcept
	Request handle to be closed. More...

void	SetLoopClosing (bool loopClosing) noexcept
	Set if the loop is closing. More...

bool	IsLoopClosing () const noexcept
	Get the loop closing status. More...

void	Reference () noexcept
	Reference the given handle. More...

void	Unreference () noexcept
	Unreference the given handle. More...

bool	HasReference () const noexcept
	Check if the given handle is referenced. More...

size_t	RawSize () const noexcept
	Return the size of the underlying handle type. More...

uv_handle_t *	GetRawHandle () const noexcept
	Get the underlying handle data structure. More...

void	SetBufferAllocator (std::function< Buffer(size_t)> alloc, std::function< void(Buffer &)> dealloc)
	Set the functions used for allocating and releasing buffers. More...

void	FreeBuf (Buffer &buf) const noexcept
	Free a buffer. More...

template<typename T = void>
std::shared_ptr< T >	GetData () const
	Gets user-defined data. More...

void	SetData (std::shared_ptr< void > data)
	Sets user-defined data. More...

void	SetLogger (Logger *logger)
	Sets logger. More...

Logger *	GetLogger () const
	Gets logger. More...

void	ReportError (int err) const
	Report an error. More...

Static Public Member Functions
static std::shared_ptr< Tcp >	Create (Loop &loop, unsigned int flags=AF_UNSPEC)
	Create a TCP handle. More...

static std::shared_ptr< Tcp >	Create (const std::shared_ptr< Loop > &loop, unsigned int flags=AF_UNSPEC)
	Create a TCP handle. More...

Additional Inherited Members
Public Attributes inherited from wpi::uv::NetworkStream
sig::Signal	connection
	Signal generated when an incoming connection is received. More...

Public Attributes inherited from wpi::uv::Stream
sig::Signal< Buffer &, size_t >	data
	Signal generated when data was read on a stream. More...

sig::Signal	end
	Signal generated when no more read data is available. More...

Public Attributes inherited from wpi::uv::Handle
sig::Signal< Error >	error
	Error signal. More...

sig::Signal	closed
	Closed signal. More...

Static Public Attributes inherited from wpi::uv::NetworkStream
static constexpr int	kDefaultBacklog = 128

Protected Member Functions inherited from wpi::uv::NetworkStreamImpl< Tcp, uv_tcp_t >
	NetworkStreamImpl ()

Protected Member Functions inherited from wpi::uv::NetworkStream
	NetworkStream (uv_stream_t *uv_stream)

virtual NetworkStream *	DoAccept ()=0

Protected Member Functions inherited from wpi::uv::Stream
	Stream (uv_stream_t *uv_stream)

Protected Member Functions inherited from wpi::uv::Handle
	Handle (uv_handle_t *uv_handle)

void	Keep () noexcept

void	Release () noexcept

void	ForceClosed () noexcept

template<typename F , typename... Args>
bool	Invoke (F &&f, Args &&... args) const

Static Protected Member Functions inherited from wpi::uv::Handle
static void	AllocBuf (uv_handle_t handle, size_t size, uv_buf_t buf)

static void	DefaultFreeBuf (Buffer &buf)

Detailed Description

TCP handle.

TCP handles are used to represent both TCP streams and servers.

Member Typedef Documentation

◆ Time

using wpi::uv::Tcp::Time = std::chrono::duration<uint64_t, std::milli>

Constructor & Destructor Documentation

◆ Tcp()

wpi::uv::Tcp::Tcp ( const private_init & )

inlineexplicit

◆ ~Tcp()

wpi::uv::Tcp::~Tcp ( )

overridedefaultnoexcept

Member Function Documentation

◆ Accept() [1/2]

std::shared_ptr< Tcp > wpi::uv::Tcp::Accept ( )

Accept incoming connection.

This call is used in conjunction with Listen() to accept incoming connections. Call this function after receiving a ListenEvent event to accept the connection. An error signal will be emitted in case of errors.

When the connection signal is emitted it is guaranteed that this function will complete successfully the first time. If you attempt to use it more than once, it may fail. It is suggested to only call this function once per connection signal.

Returns: The stream handle for the accepted connection, or nullptr on error.

◆ Accept() [2/2]

bool wpi::uv::Tcp::Accept ( const std::shared_ptr< Tcp > & client )

inline

Accept incoming connection.

This call is used in conjunction with Listen() to accept incoming connections. Call this function after receiving a connection signal to accept the connection. An error signal will be emitted in case of errors.

When the connection signal is emitted it is guaranteed that this function will complete successfully the first time. If you attempt to use it more than once, it may fail. It is suggested to only call this function once per connection signal.

Parameters

client Client stream object.

Returns: False on error.

◆ Bind() [1/4]

void wpi::uv::Tcp::Bind	(	const sockaddr &	addr,
		unsigned int	flags = `0`
	)

inline

Bind the handle to an IPv4 or IPv6 address and port.

A successful call to this function does not guarantee that the call to Listen() or Connect() will work properly. An error signal can be emitted because of either this function or the ones mentioned above.

Parameters

addr	Initialized `sockaddr_in` or `sockaddr_in6` data structure.
flags	Optional additional flags.

◆ Bind() [2/4]

void wpi::uv::Tcp::Bind	(	const sockaddr_in &	addr,
		unsigned int	flags = `0`
	)

inline

◆ Bind() [3/4]

void wpi::uv::Tcp::Bind	(	const sockaddr_in6 &	addr,
		unsigned int	flags = `0`
	)

inline

◆ Bind() [4/4]

void wpi::uv::Tcp::Bind	(	std::string_view	ip,
		unsigned int	port,
		unsigned int	flags = `0`
	)

Bind the handle to an IPv4 address and port.

A successful call to this function does not guarantee that the call to Listen() or Connect() will work properly. An error signal can be emitted because of either this function or the ones mentioned above.

Available flags are:

Parameters

ip	The address to which to bind.
port	The port to which to bind.
flags	Optional additional flags.

◆ Bind6()

void wpi::uv::Tcp::Bind6	(	std::string_view	ip,
		unsigned int	port,
		unsigned int	flags = `0`
	)

Bind the handle to an IPv6 address and port.

A successful call to this function does not guarantee that the call to Listen() or Connect() will work properly. An error signal can be emitted because of either this function or the ones mentioned above.

Available flags are:

Parameters

ip	The address to which to bind.
port	The port to which to bind.
flags	Optional additional flags.

◆ CloseReset()

void wpi::uv::Tcp::CloseReset ( )

Resets a TCP connection by sending a RST packet.

This is accomplished by setting the SO_LINGER socket option with a linger interval of zero and then calling Close(). Due to some platform inconsistencies, mixing of Shutdown() and CloseReset() calls is not allowed.

◆ Connect() [1/8]

void wpi::uv::Tcp::Connect	(	const sockaddr &	addr,
		const std::shared_ptr< TcpConnectReq > &	req
	)

Establish an IPv4 or IPv6 TCP connection.

On Windows if the addr is initialized to point to an unspecified address (0.0.0.0 or ::) it will be changed to point to localhost. This is done to match the behavior of Linux systems.

The connected signal is emitted on the request when the connection has been established. The error signal is emitted on the request in case of errors during the connection.

Parameters

addr	Initialized `sockaddr_in` or `sockaddr_in6` data structure.
req	connection request

◆ Connect() [2/8]

void wpi::uv::Tcp::Connect	(	const sockaddr &	addr,
		std::function< void()>	callback
	)

Establish an IPv4 or IPv6 TCP connection.

On Windows if the addr is initialized to point to an unspecified address (0.0.0.0 or ::) it will be changed to point to localhost. This is done to match the behavior of Linux systems.

The callback is called when the connection has been established. Errors are reported to the stream error handler.

Parameters

addr	Initialized `sockaddr_in` or `sockaddr_in6` data structure.
callback	Callback function to call when connection established

◆ Connect() [3/8]

void wpi::uv::Tcp::Connect	(	const sockaddr_in &	addr,
		const std::shared_ptr< TcpConnectReq > &	req
	)

inline

◆ Connect() [4/8]

void wpi::uv::Tcp::Connect	(	const sockaddr_in &	addr,
		std::function< void()>	callback
	)

inline

◆ Connect() [5/8]

void wpi::uv::Tcp::Connect	(	const sockaddr_in6 &	addr,
		const std::shared_ptr< TcpConnectReq > &	req
	)

inline

◆ Connect() [6/8]

void wpi::uv::Tcp::Connect	(	const sockaddr_in6 &	addr,
		std::function< void()>	callback
	)

inline

◆ Connect() [7/8]

void wpi::uv::Tcp::Connect	(	std::string_view	ip,
		unsigned int	port,
		const std::shared_ptr< TcpConnectReq > &	req
	)

Establish an IPv4 TCP connection.

On Windows if the addr is initialized to point to an unspecified address (0.0.0.0 or ::) it will be changed to point to localhost. This is done to match the behavior of Linux systems.

The connected signal is emitted on the request when the connection has been established. The error signal is emitted on the request in case of errors during the connection.

Parameters

ip	The address to which to connect to.
port	The port to which to connect to.
req	connection request

◆ Connect() [8/8]

void wpi::uv::Tcp::Connect	(	std::string_view	ip,
		unsigned int	port,
		std::function< void()>	callback
	)

Establish an IPv4 TCP connection.

On Windows if the addr is initialized to point to an unspecified address (0.0.0.0 or ::) it will be changed to point to localhost. This is done to match the behavior of Linux systems.

The callback is called when the connection has been established. Errors are reported to the stream error handler.

Parameters

ip	The address to which to connect to.
port	The port to which to connect to.
callback	Callback function to call when connection established

◆ Connect6() [1/2]

void wpi::uv::Tcp::Connect6	(	std::string_view	ip,
		unsigned int	port,
		const std::shared_ptr< TcpConnectReq > &	req
	)

Establish an IPv6 TCP connection.

On Windows if the addr is initialized to point to an unspecified address (0.0.0.0 or ::) it will be changed to point to localhost. This is done to match the behavior of Linux systems.

The connected signal is emitted on the request when the connection has been established. The error signal is emitted on the request in case of errors during the connection.

Parameters

ip	The address to which to connect to.
port	The port to which to connect to.
req	connection request

◆ Connect6() [2/2]

void wpi::uv::Tcp::Connect6	(	std::string_view	ip,
		unsigned int	port,
		std::function< void()>	callback
	)

Establish an IPv6 TCP connection.

On Windows if the addr is initialized to point to an unspecified address (0.0.0.0 or ::) it will be changed to point to localhost. This is done to match the behavior of Linux systems.

The callback is called when the connection has been established. Errors are reported to the stream error handler.

Parameters

ip	The address to which to connect to.
port	The port to which to connect to.
callback	Callback function to call when connection established

◆ Create() [1/2]

static std::shared_ptr< Tcp > wpi::uv::Tcp::Create	(	const std::shared_ptr< Loop > &	loop,
		unsigned int	flags = `AF_UNSPEC`
	)

inlinestatic

Create a TCP handle.

Parameters

loop	Loop object where this handle runs.
flags	Flags

◆ Create() [2/2]

static std::shared_ptr< Tcp > wpi::uv::Tcp::Create	(	Loop &	loop,
		unsigned int	flags = `AF_UNSPEC`
	)

static

Create a TCP handle.

Parameters

loop	Loop object where this handle runs.
flags	Flags

◆ GetPeer()

sockaddr_storage wpi::uv::Tcp::GetPeer ( )

Get the address of the peer connected to the handle.

Returns: The address (will be zeroed if an error occurred).

◆ GetSock()

sockaddr_storage wpi::uv::Tcp::GetSock ( )

Get the current address to which the handle is bound.

Returns: The address (will be zeroed if an error occurred).

◆ Open()

void wpi::uv::Tcp::Open ( uv_os_sock_t sock )

inline

Open an existing file descriptor or SOCKET as a TCP handle.

Note: The passed file descriptor or SOCKET is not checked for its type, but it's required that it represents a valid stream socket.

Parameters

sock	A valid socket handle (either a file descriptor or a SOCKET).

◆ Reuse()

void wpi::uv::Tcp::Reuse	(	std::function< void()>	callback,
		unsigned int	flags = `AF_UNSPEC`
	)

Reuse this handle.

This closes the handle, and after the close completes, reinitializes it (identically to Create) and calls the provided callback. Unlike Close(), it does NOT emit the closed signal, however, IsClosing() will return true until the callback is called. This does nothing if IsClosing() is true (e.g. if Close() was called).

Parameters

flags	Flags
callback	Callback

◆ SetKeepAlive()

bool wpi::uv::Tcp::SetKeepAlive	(	bool	enable,
		Time	time = `Time{0}`
	)

inline

Enable/Disable TCP keep-alive.

Parameters

enable	True to enable it, false otherwise.
time	Initial delay in seconds (use `std::chrono::duration<unsigned int>`).

Returns: True in case of success, false otherwise.

◆ SetNoDelay()

bool wpi::uv::Tcp::SetNoDelay ( bool enable )

inline

Enable no delay operation (turns off Nagle's algorithm).

Parameters

enable True to enable it, false otherwise.

Returns: True in case of success, false otherwise.

◆ SetSimultaneousAccepts()

bool wpi::uv::Tcp::SetSimultaneousAccepts ( bool enable )

inline

Enable/Disable simultaneous asynchronous accept requests.

Enable/Disable simultaneous asynchronous accept requests that are queued by the operating system when listening for new TCP connections. This setting is used to tune a TCP server for the desired performance. Having simultaneous accepts can significantly improve the rate of accepting connections (which is why it is enabled by default) but may lead to uneven load distribution in multi-process setups.

Parameters

enable True to enable it, false otherwise.

Returns: True in case of success, false otherwise.

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

wpinet/uv/Tcp.h

Public Types

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Time

Constructor & Destructor Documentation

◆ Tcp()

◆ ~Tcp()

Member Function Documentation

◆ Accept() [1/2]

◆ Accept() [2/2]

◆ Bind() [1/4]

◆ Bind() [2/4]

◆ Bind() [3/4]

◆ Bind() [4/4]

◆ Bind6()

◆ CloseReset()

◆ Connect() [1/8]

◆ Connect() [2/8]

◆ Connect() [3/8]

◆ Connect() [4/8]

◆ Connect() [5/8]

◆ Connect() [6/8]

◆ Connect() [7/8]

◆ Connect() [8/8]

◆ Connect6() [1/2]

◆ Connect6() [2/2]

◆ Create() [1/2]

◆ Create() [2/2]

◆ GetPeer()

◆ GetSock()

◆ Open()

◆ Reuse()

◆ SetKeepAlive()

◆ SetNoDelay()

◆ SetSimultaneousAccepts()