socket.h File Reference

Main sockets header. More...

#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/uio.h>

Go to the source code of this file.

Data Structures
struct	sockaddr
	Socket address structure. More...
struct	sockaddr_storage
	Socket address structure of appropriate size to hold any supported socket type's addresses. More...

Macros
#define	_SS_MAXSIZE   128
	Size of the struct sockaddr_storage.
#define	_SS_ALIGNSIZE   (sizeof(__uint64_t))
	Desired alignment of struct sockaddr_storage.
#define	_SS_PAD1SIZE   (_SS_ALIGNSIZE - sizeof(sa_family_t))
	First padding size used within struct sockaddr_storage.
#define	_SS_PAD2SIZE
	Second padding size used within struct sockaddr_storage.
#define	SOCK_DGRAM   1
	Datagram socket type.
#define	SOCK_STREAM   2
	Stream socket type.
#define	SOL_SOCKET   1
	Socket-level option setting.
#define	SO_ACCEPTCONN   1
	Socket is accepting connections (get)
#define	SO_BROADCAST   2
	Support broadcasting (get/set)
#define	SO_DEBUG   3
	Record debugging info (get/set)
#define	SO_DONTROUTE   4
	Do not route packets (get/set)
#define	SO_ERROR   5
	Retrieve error status (get)
#define	SO_KEEPALIVE   6
	Send keepalive messages (get/set)
#define	SO_LINGER   7
	Socket lingers on close (get/set)
#define	SO_OOBINLINE   8
	OOB data is inline (get/set)
#define	SO_RCVBUF   9
	Receive buffer size (get/set)
#define	SO_RCVLOWAT   10
	Receive low-water mark (get/set)
#define	SO_RCVTIMEO   11
	Receive timeout value (get/set)
#define	SO_REUSEADDR   12
	Reuse local addresses (get/set)
#define	SO_SNDBUF   13
	Send buffer size (get/set)
#define	SO_SNDLOWAT   14
	Send low-water mark (get/set)
#define	SO_SNDTIMEO   15
	Send timeout value (get/set)
#define	SO_TYPE   16
	Socket type (get)
#define	MSG_CTRUNC   0x01
	Control data truncated (U)
#define	MSG_DONTROUTE   0x02
	Send without routing (U)
#define	MSG_EOR   0x04
	Terminate a record (U)
#define	MSG_OOB   0x08
	Out-of-band data (U)
#define	MSG_PEEK   0x10
	Leave received data in queue.
#define	MSG_TRUNC   0x20
	Normal data truncated (U)
#define	MSG_WAITALL   0x40
	Attempt to fill read buffer.
#define	MSG_DONTWAIT   0x80
	Make this call non-blocking (non-standard)
#define	AF_UNSPEC   0
	Unspecified address family.
#define	AF_INET   1
	Internet domain sockets for use with IPv4 addresses.
#define	AF_INET6   2
	Internet domain sockets for use with IPv6 addresses.
#define	PF_UNSPEC   AF_UNSPEC
	Unspecified protocol family.
#define	PF_INET   AF_INET
	Protocol family for Internet domain sockets (IPv4).
#define	PF_INET6   AF_INET6
	Protocol family for Internet domain sockets (IPv6).
#define	SHUT_RD   0x00000001
	Disable further receive operations.
#define	SHUT_WR   0x00000002
	Disable further send operations.
#define	SHUT_RDWR   (SHUT_RD | SHUT_WR)
	Disable further send and receive operations.
#define	SOMAXCONN   32
	Maximum backlog for a listening socket.

Typedefs
typedef __uint32_t	socklen_t
	Socket length type.
typedef __uint8_t	sa_family_t
	Socket address family type.

Functions
int	accept (int socket, struct sockaddr *address, socklen_t *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	listen (int socket, int backlog)
	Listen for socket connections and set the queue length.
ssize_t	recv (int socket, void *buffer, size_t length, int flags)
	Receive a message on a connected socket.
ssize_t	recvfrom (int socket, void *buffer, size_t length, int flags, struct sockaddr *address, socklen_t *address_len)
	Receive a message on a socket.
ssize_t	send (int socket, const void *message, size_t length, int flags)
	Send a message on a connected socket.
ssize_t	sendto (int socket, const void *message, size_t length, int flags, const struct sockaddr *dest_addr, socklen_t dest_len)
	Send a message on a socket.
int	shutdown (int socket, int how)
	Shutdown socket send and receive operations.
int	socket (int domain, int type, int protocol)
	Create an endpoint for communications.
int	getsockname (int socket, struct sockaddr *name, socklen_t *name_len)
	Get socket name.
int	getpeername (int socket, struct sockaddr *__RESTRICT name, socklen_t *__RESTRICT name_len)
	Get the name of the connected peer socket.
int	getsockopt (int socket, int level, int option_name, void *option_value, socklen_t *option_len)
	Get socket options.
int	setsockopt (int socket, int level, int option_name, const void *option_value, socklen_t option_len)
	Set socket options.

Detailed Description

Main sockets header.

This file contains the standard definitions (as directed by the POSIX 2008 spec) for socket-related functionality in the AF_INET and AF_INET6 address families. This does not include anything related to UNIX domain sockets and is not guaranteed to have everything that one might have in a fully-standards compliant implementation of the POSIX spec.

Author

Lawrence Sebald