socket.h File Reference

Main socket header. More...

Detailed Description

Main socket header.

See also

The Open Group Base Specifications Issue 7, <sys/socket.h>

Todo:

Omitted from original specification for now:

• struct msghdr, struct cmesghdr, and struct linger and all related defines
• getsockopt()/setsockopt() and all related defines.
• shutdown() and all related defines.
• sockatmark()

Author

Martine Lenders mlend.nosp@m.ers@.nosp@m.inf.f.nosp@m.u-be.nosp@m.rlin..nosp@m.de

Definition in file socket.h.

#include <stdalign.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/uio.h>
#include "architecture.h"
#include "net/af.h"
#include "sys/bytes.h"

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Data Structures
struct	sockaddr
	Used to define the socket address. More...
struct	sockaddr_storage
	Implementation based socket address table. More...

Macros
#define	SOCKET_POOL_SIZE   (4)
	Maximum number of sockets available on for creation with socket()
#define	SOCKET_TCP_QUEUE_SIZE   (0)
	Maximum number of incoming TCP connections a listening socket can handle.
#define	SOCKADDR_MAX_DATA_LEN   (26)
	Maximum data length for a socket address.
#define	SOL_SOCKET   (-1)
	Options to be accessed at socket level, not protocol level.

Typedefs
typedef unsigned short	sa_family_t
	address family type

Functions
int	accept (int socket, struct sockaddr *__restrict address, socklen_t *__restrict address_len)
	Accept a new connection on a socket.
int	bind (int socket, const struct sockaddr *address, socklen_t address_len)
	Bind a name to a socket.
int	connect (int socket, const struct sockaddr *address, socklen_t address_len)
	Connect a socket.
int	getpeername (int socket, struct sockaddr *__restrict address, socklen_t *__restrict address_len)
	Get the name of the peer socket.
int	getsockname (int socket, struct sockaddr *__restrict address, socklen_t *__restrict address_len)
	Get the socket name.
int	listen (int socket, int backlog)
	Listen for socket connections and limit the queue of incoming connections.
ssize_t	recvfrom (int socket, void *__restrict buffer, size_t length, int flags, struct sockaddr *__restrict address, socklen_t *__restrict address_len)
	Receive a message from a socket.
static ssize_t	recv (int socket, void *buffer, size_t length, int flags)
	Receive a message from a connected socket.
ssize_t	sendto (int socket, const void *buffer, size_t length, int flags, const struct sockaddr *address, socklen_t address_len)
	Send a message on a socket.
static ssize_t	send (int socket, const void *buffer, size_t length, int flags)
	Send a message on a socket.
int	socket (int domain, int type, int protocol)
	Create an endpoint for communication.

Socket types
#define	SOCK_DGRAM   (1)
	Datagram socket.
#define	SOCK_RAW   (2)
	Raw socket.
#define	SOCK_SEQPACKET   (3)
	Sequenced-packet socket.
#define	SOCK_STREAM   (4)
	Stream socket.

Option names
Option names for getsockopt() and setsockopt()
#define	SO_ACCEPTCONN   (0)
	Socket is accepting connections.
#define	SO_BROADCAST   (1)
	Transmission of broadcast messages is supported.
#define	SO_DEBUG   (2)
	Debugging information is being recorded.
#define	SO_DONTROUTE   (3)
	Bypass normal routing.
#define	SO_ERROR   (4)
	Socket error status.
#define	SO_KEEPALIVE   (5)
	Connections are kept alive with periodic messages.
#define	SO_LINGER   (6)
	Socket lingers on close.
#define	SO_OOBINLINE   (7)
	Out-of-band data is transmitted in line.
#define	SO_RCVBUF   (8)
	Receive buffer size.
#define	SO_RCVLOWAT   (9)
	Receive "low water mark".
#define	SO_RCVTIMEO   (10)
	Receive timeout.
#define	SO_REUSEADDR   (11)
	Reuse of local addresses is supported.
#define	SO_SNDBUF   (12)
	Send buffer size.
#define	SO_SNDLOWAT   (13)
	Send "low water mark".
#define	SO_SNDTIMEO   (14)
	Send timeout.
#define	SO_TYPE   (15)
	Socket type.
static int	getsockopt (int socket, int level, int option_name, void *option_value, socklen_t *option_len)
int	setsockopt (int socket, int level, int option_name, const void *option_value, socklen_t option_len)