Socket API. More...

Functions
error_t	socketInit (void)
	Socket related initialization.
Socket *	socketOpen (uint_t type, uint_t protocol)
	Create a socket (UDP or TCP)
error_t	socketSetTimeout (Socket *socket, systime_t timeout)
	Set timeout value for blocking operations.
error_t	socketSetTxBufferSize (Socket *socket, size_t size)
	Specify the size of the send buffer.
error_t	socketSetRxBufferSize (Socket *socket, size_t size)
	Specify the size of the receive buffer.
error_t	socketBindToInterface (Socket socket, NetInterface interface)
	Bind a socket to a particular network interface.
error_t	socketBind (Socket socket, const IpAddr localIpAddr, uint16_t localPort)
	Associate a local address with a socket.
error_t	socketConnect (Socket socket, const IpAddr remoteIpAddr, uint16_t remotePort)
	Establish a connection to a specified socket.
error_t	socketListen (Socket *socket, uint_t backlog)
	Place a socket in the listening state.
Socket *	socketAccept (Socket socket, IpAddr clientIpAddr, uint16_t *clientPort)
	Permit an incoming connection attempt on a socket.
error_t	socketSend (Socket socket, const void data, size_t length, size_t *written, uint_t flags)
	Send data to a connected socket.
error_t	socketSendTo (Socket socket, const IpAddr destIpAddr, uint16_t destPort, const void data, size_t length, size_t written, uint_t flags)
	Send a datagram to a specific destination.
error_t	socketReceive (Socket socket, void data, size_t size, size_t *received, uint_t flags)
	Receive data from a connected socket.
error_t	socketReceiveFrom (Socket socket, IpAddr srcIpAddr, uint16_t srcPort, void data, size_t size, size_t *received, uint_t flags)
	Receive a datagram from a connectionless socket.
error_t	socketReceiveEx (Socket socket, IpAddr srcIpAddr, uint16_t srcPort, IpAddr destIpAddr, void data, size_t size, size_t received, uint_t flags)
	Receive a datagram.
error_t	socketGetLocalAddr (Socket socket, IpAddr localIpAddr, uint16_t *localPort)
	Retrieve the local address for a given socket.
error_t	socketGetRemoteAddr (Socket socket, IpAddr remoteIpAddr, uint16_t *remotePort)
	Retrieve the address of the peer to which a socket is connected.
error_t	socketShutdown (Socket *socket, uint_t how)
	Disable reception, transmission, or both.
void	socketClose (Socket *socket)
	Close an existing socket.
error_t	socketPoll (SocketEventDesc eventDesc, uint_t size, OsEvent extEvent, systime_t timeout)
	Wait for one of a set of sockets to become ready to perform I/O.
error_t	socketRegisterEvents (Socket socket, OsEvent event, uint_t eventMask)
	Subscribe to the specified socket events.
error_t	socketUnregisterEvents (Socket *socket)
	Unsubscribe previously registered events.
error_t	socketGetEvents (Socket socket, uint_t eventFlags)
	Retrieve event flags for a specified socket.
error_t	getHostByName (NetInterface interface, const char_t name, IpAddr *ipAddr, uint_t flags)
	Resolve a host name into an IP address.

Detailed Description

Socket API.

License

This file is part of CycloneTCP Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author:: Oryx Embedded SARL (www.oryx-embedded.com)

Version:: 1.7.6

Definition in file socket.c.

Function Documentation

error_t getHostByName	(	NetInterface *	interface,
		const char_t *	name,
		IpAddr *	ipAddr,
		uint_t	flags
	)

Resolve a host name into an IP address.

Parameters:

[in]	interface	Underlying network interface (optional parameter)
[in]	name	Name of the host to be resolved
[out]	ipAddr	IP address corresponding to the specified host name
[in]	flags	Set of flags that influences the behavior of this function

Returns:: Error code

Definition at line 1049 of file socket.c.

Socket* socketAccept	(	Socket *	socket,
		IpAddr *	clientIpAddr,
		uint16_t *	clientPort
	)

Permit an incoming connection attempt on a socket.

Parameters:

[in]	socket	Handle to a socket previously placed in a listening state
[out]	clientIpAddr	IP address of the client
[out]	clientPort	Port number used by the client

Returns:: Handle to the socket in which the actual connection is made

Definition at line 457 of file socket.c.

error_t socketBind	(	Socket *	socket,
		const IpAddr *	localIpAddr,
		uint16_t	localPort
	)

Associate a local address with a socket.

Parameters:

[in]	socket	Handle to a socket
[in]	localIpAddr	Local address to assign to the bound socket
[in]	localPort	Local port number to assign to the bound socket

Returns:: Error code

Definition at line 331 of file socket.c.

error_t socketBindToInterface	(	Socket *	socket,
		NetInterface *	interface
	)

Bind a socket to a particular network interface.

Parameters:

[in]	socket	Handle to a socket
[in]	interface	Network interface to be used

Returns:: Error code

Definition at line 309 of file socket.c.

void socketClose ( Socket * socket )

Close an existing socket.

Parameters:

[in] socket Handle identifying the socket to close

Definition at line 797 of file socket.c.

error_t socketConnect	(	Socket *	socket,
		const IpAddr *	remoteIpAddr,
		uint16_t	remotePort
	)

Establish a connection to a specified socket.

Parameters:

[in]	socket	Handle to an unconnected socket
[in]	remoteIpAddr	IP address of the remote host
[in]	remotePort	Remote port number that will be used to establish the connection

Returns:: Error code

Definition at line 357 of file socket.c.

error_t socketGetEvents	(	Socket *	socket,
		uint_t *	eventFlags
	)

Retrieve event flags for a specified socket.

Parameters:

[in]	socket	Handle that identifies a socket
[out]	eventFlags	Logic OR of events in the signaled state

Returns:: Error code

Definition at line 1016 of file socket.c.

error_t socketGetLocalAddr	(	Socket *	socket,
		IpAddr *	localIpAddr,
		uint16_t *	localPort
	)

Retrieve the local address for a given socket.

Parameters:

[in]	socket	Handle that identifies a socket
[out]	localIpAddr	Local IP address (optional)
[out]	localPort	Local port number (optional)

Returns:: Error code

Definition at line 703 of file socket.c.

error_t socketGetRemoteAddr	(	Socket *	socket,
		IpAddr *	remoteIpAddr,
		uint16_t *	remotePort
	)

Retrieve the address of the peer to which a socket is connected.

Parameters:

[in]	socket	Handle that identifies a socket
[out]	remoteIpAddr	IP address of the remote host (optional)
[out]	remotePort	Remote port number (optional)

Returns:: Error code

Definition at line 730 of file socket.c.

error_t socketInit ( void )

Socket related initialization.

Returns:: Error code

Definition at line 54 of file socket.c.

error_t socketListen	(	Socket *	socket,
		uint_t	backlog
	)

Place a socket in the listening state.

Place a socket in a state in which it is listening for an incoming connection

Parameters:

[in]	socket	Socket to place in the listening state
[in]	backlog	backlog The maximum length of the pending connection queue. If this parameter is zero, then the default backlog value is used instead

Returns:: Error code

Definition at line 420 of file socket.c.

Socket* socketOpen	(	uint_t	type,
		uint_t	protocol
	)

Create a socket (UDP or TCP)

Parameters:

[in]	type	Type specification for the new socket
[in]	protocol	Protocol to be used

Returns:: Handle referencing the new socket

Definition at line 92 of file socket.c.

error_t socketPoll	(	SocketEventDesc *	eventDesc,
		uint_t	size,
		OsEvent *	extEvent,
		systime_t	timeout
	)

Wait for one of a set of sockets to become ready to perform I/O.

The socketPoll function determines the status of one or more sockets, waiting if necessary, to perform synchronous I/O

Parameters:

[in,out]	eventDesc	Set of entries specifying the events the user is interested in
[in]	size	Number of entries in the descriptor set
[in]	extEvent	External event that can abort the wait if necessary (optional)
[in]	timeout	Maximum time to wait before returning

Returns:: Error code

Definition at line 857 of file socket.c.

error_t socketReceive	(	Socket *	socket,
		void *	data,
		size_t	size,
		size_t *	received,
		uint_t	flags
	)

Receive data from a connected socket.

Parameters:

[in]	socket	Handle that identifies a connected socket
[out]	data	Buffer where to store the incoming data
[in]	size	Maximum number of bytes that can be received
[out]	received	Number of bytes that have been received
[in]	flags	Set of flags that influences the behavior of this function

Returns:: Error code

Definition at line 584 of file socket.c.

error_t socketReceiveEx	(	Socket *	socket,
		IpAddr *	srcIpAddr,
		uint16_t *	srcPort,
		IpAddr *	destIpAddr,
		void *	data,
		size_t	size,
		size_t *	received,
		uint_t	flags
	)

Receive a datagram.

Parameters:

[in]	socket	Handle that identifies a socket
[out]	srcIpAddr	Source IP address (optional)
[out]	srcPort	Source port number (optional)
[out]	destIpAddr	Destination IP address (optional)
[out]	data	Buffer where to store the incoming data
[in]	size	Maximum number of bytes that can be received
[out]	received	Number of bytes that have been received
[in]	flags	Set of flags that influences the behavior of this function

Returns:: Error code

Definition at line 625 of file socket.c.

error_t socketReceiveFrom	(	Socket *	socket,
		IpAddr *	srcIpAddr,
		uint16_t *	srcPort,
		void *	data,
		size_t	size,
		size_t *	received,
		uint_t	flags
	)

Receive a datagram from a connectionless socket.

Parameters:

[in]	socket	Handle that identifies a socket
[out]	srcIpAddr	Source IP address (optional)
[out]	srcPort	Source port number (optional)
[out]	data	Buffer where to store the incoming data
[in]	size	Maximum number of bytes that can be received
[out]	received	Number of bytes that have been received
[in]	flags	Set of flags that influences the behavior of this function

Returns:: Error code

Definition at line 604 of file socket.c.

error_t socketRegisterEvents	(	Socket *	socket,
		OsEvent *	event,
		uint_t	eventMask
	)

Subscribe to the specified socket events.

Parameters:

[in]	socket	Handle that identifies a socket
[in]	event	Event object used to receive notifications
[in]	eventMask	Logic OR of the requested socket events

Returns:: Error code

Definition at line 936 of file socket.c.

error_t socketSend	(	Socket *	socket,
		const void *	data,
		size_t	length,
		size_t *	written,
		uint_t	flags
	)

Send data to a connected socket.

Parameters:

[in]	socket	Handle that identifies a connected socket
[in]	data	Pointer to a buffer containing the data to be transmitted
[in]	length	Number of data bytes to send
[out]	written	Actual number of bytes written (optional parameter)
[in]	flags	Set of flags that influences the behavior of this function

Returns:: Error code

Definition at line 490 of file socket.c.

error_t socketSendTo	(	Socket *	socket,
		const IpAddr *	destIpAddr,
		uint16_t	destPort,
		const void *	data,
		size_t	length,
		size_t *	written,
		uint_t	flags
	)

Send a datagram to a specific destination.

Parameters:

[in]	socket	Handle that identifies a socket
[in]	destIpAddr	IP address of the target host
[in]	destPort	Target port number
[in]	data	Pointer to a buffer containing the data to be transmitted
[in]	length	Number of data bytes to send
[out]	written	Actual number of bytes written (optional parameter)
[in]	flags	Set of flags that influences the behavior of this function

Returns:: Error code

Definition at line 511 of file socket.c.

error_t socketSetRxBufferSize	(	Socket *	socket,
		size_t	size
	)

Specify the size of the receive buffer.

Parameters:

[in]	socket	Handle to a socket
[in]	size	Desired buffer size in bytes

Returns:: Error code

Definition at line 275 of file socket.c.

error_t socketSetTimeout	(	Socket *	socket,
		systime_t	timeout
	)

Set timeout value for blocking operations.

Parameters:

[in]	socket	Handle to a socket
[in]	timeout	Maximum time to wait

Returns:: Error code

Definition at line 216 of file socket.c.

error_t socketSetTxBufferSize	(	Socket *	socket,
		size_t	size
	)

Specify the size of the send buffer.

Parameters:

[in]	socket	Handle to a socket
[in]	size	Desired buffer size in bytes

Returns:: Error code

Definition at line 241 of file socket.c.

error_t socketShutdown	(	Socket *	socket,
		uint_t	how
	)

Disable reception, transmission, or both.

Note that socketShutdown() does not close the socket, and resources attached to the socket will not be freed until socketClose() is invoked

Parameters:

[in]	socket	Handle to a socket
[in]	how	Flag that describes what types of operation will no longer be allowed

Returns:: Error code

Definition at line 760 of file socket.c.

error_t socketUnregisterEvents ( Socket * socket )

Unsubscribe previously registered events.

Parameters:

[in] socket Handle that identifies a socket

Returns:: Error code

Definition at line 990 of file socket.c.

Type:	Library
Created:	04 Feb 2017
Imports:	72
Forks:	0
Commits:	1
Dependents:	1
Dependencies:	0
Followers:	6

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