"Oracle Solaris 9 - man pages section 3: Networking Library Funct"

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Oracle Solaris 9是Sun Microsystems, Inc.开发的一款操作系统。本文将着重介绍其man pages section 3中的Networking Library Functions部分相关信息。Networking Library Functions是用于在Solaris 9系统上进行网络编程的函数库。这些函数可以帮助开发人员实现网络通信和数据传输等功能。本文将对这些函数进行详细介绍。 man pages section 3: Networking Library Functions-744提供了关于Solaris 9系统中网络编程相关函数的详细文档。本文档由Sun Microsystems, Inc.提供，涵盖了包括网络通信、数据传输、网络协议等在内的各类网络编程功能。读者可以通过该文档了解到如何在Solaris 9系统上使用这些函数进行网络编程。值得注意的是，本文档受版权保护，未经Sun及其许可方事先书面授权，任何形式的复制、分发和反编译都是被禁止的。其中可能包含的第三方软件也受版权保护，使用时需要遵守相关许可条款。此外，产品中的部分内容可能来源于加州大学伯克利分校的Berkeley BSD系统，UNIX是在美国和其他国家/地区的注册商标。总的来说，man pages section 3: Networking Library Functions提供了Solaris 9系统中网络编程相关函数的详细文档，对于开发人员来说具有很大的参考价值。通过学习这些函数的使用方法，开发人员可以更好地实现网络通信和数据传输等功能。同时，需要注意遵守相关的版权和许可条款，以确保合法合规地使用这些函数。

16 man pages section 3: Networking Library Functions • April 2004

accept – accept a connection on a socket

cc [ ﬂag ... ] ﬁle ... -lsocket -lnsl [ library ... ]

#include <sys/types.h>

#include <sys/socket.h>

int accept(int s, struct sockaddr *addr, socklen_t *addrlen);

The argument s is a socket that has been created with socket(3SOCKET) and bound

to an address with bind(3SOCKET), and that is listening for connections after a call to

listen(3SOCKET). The accept() function extracts the ﬁrst connection on the queue

of pending connections, creates a new socket with the properties of s, and allocates a

new ﬁle descriptor, ns, for the socket. If no pending connections are present on the

queue and the socket is not marked as non-blocking, accept() blocks the caller until

a connection is present. If the socket is marked as non-blocking and no pending

connections are present on the queue, accept() returns an error as described below.

The accept() function uses the netconfig(4) ﬁle to determine the STREAMS

device ﬁle name associated with s. This is the device on which the connect indication

will be accepted. The accepted socket, ns, is used to read and write data to and from

the socket that connected to ns. It is not used to accept more connections. The original

socket (s) remains open for accepting further connections.

The argument addr is a result parameter that is ﬁlled in with the address of the

connecting entity as it is known to the communications layer. The exact format of the

addr parameter is determined by the domain in which the communication occurs.

The argument addrlen is a value-result parameter. Initially, it contains the amount of

space pointed to by addr; on return it contains the length in bytes of the address

returned.

The accept() function is used with connection-based socket types, currently with

SOCK_STREAM.

It is possible to select(3C) or poll(2) a socket for the purpose of an accept() by

selecting or polling it for a read. However, this will only indicate when a connect

indication is pending; it is still necessary to call accept().

The accept() function returns −1 on error. If it succeeds, it returns a non-negative

integer that is a descriptor for the accepted socket.

accept() will fail if:

EBADF The descriptor is invalid.

ECONNABORTED The remote side aborted the connection before the

accept() operation completed.

EFAULT The addr parameter or the addrlen parameter is invalid.

EINTR The accept() attempt was interrupted by the

delivery of a signal.

EMFILE The per-process descriptor table is full.

accept(3SOCKET)

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUES

ERRORS

18 man pages section 3: Networking Library Functions • Last Revised 24 Jan 2002

accept – accept a new connection on a socket

cc [ ﬂag ... ] ﬁle ... -lxnet [ library ... ]

#include <sys/socket.h>

int accept(int socket, struct sockaddr *address, socklen_t

*address_len);

The accept() function extracts the ﬁrst connection on the queue of pending

connections, creates a new socket with the same socket type protocol and address

family as the speciﬁed socket, and allocates a new ﬁle descriptor for that socket.

The function takes the following arguments:

socket Speciﬁes a socket that was created with socket(3XNET), has been

bound to an address with bind(3XNET), and has issued a

successful call to listen(3XNET).

address Either a null pointer, or a pointer to a sockaddr structure where

the address of the connecting socket will be returned.

address_len Points to a socklen_t which on input speciﬁes the length of the

supplied sockaddr structure, and on output speciﬁes the length

of the stored address.

If address is not a null pointer, the address of the peer for the accepted connection is

stored in the sockaddr structure pointed to by address, and the length of this address

is stored in the object pointed to by address_len.

If the actual length of the address is greater than the length of the supplied sockaddr

structure, the stored address will be truncated.

If the protocol permits connections by unbound clients, and the peer is not bound,

then the value stored in the object pointed to by address is unspeciﬁed.

If the listen queue is empty of connection requests and O_NONBLOCK is not set on

the ﬁle descriptor for the socket, accept() will block until a connection is present. If

the listen(3XNET) queue is empty of connection requests and O_NONBLOCK is set

on the ﬁle descriptor for the socket, accept() will fail and set errno to EAGAIN or

EWOULDBLOCK.

The accepted socket cannot itself accept more connections. The original socket remains

open and can accept more connections.

When a connection is available, select(3C) will indicate that the ﬁle descriptor for

the socket is ready for reading.

Upon successful completion, accept() returns the nonnegative ﬁle descriptor of the

accepted socket. Otherwise, −1 is returned and errno is set to indicate the error.

The accept() function will fail if:

accept(3XNET)

NAME

SYNOPSIS

DESCRIPTION

USAGE

RETURN VALUES

ERRORS

20 man pages section 3: Networking Library Functions • Last Revised 8 May 1998

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