mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
05ea606a25
Fix some code examples, trailing whitespace Fix TBA sections in verify, remove others. Remove empty sections Use Mixed Case not ALL CAPS in head2 Enhance doc-nits script. Remove extra =cut line Reviewed-by: Richard Levitte <levitte@openssl.org>
113 lines
3.4 KiB
Plaintext
113 lines
3.4 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
BIO_socket, BIO_connect, BIO_listen, BIO_accept_ex, BIO_closesocket - BIO
|
|
socket communication setup routines
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/bio.h>
|
|
|
|
int BIO_socket(int domain, int socktype, int protocol, int options);
|
|
int BIO_connect(int sock, const BIO_ADDR *addr, int options);
|
|
int BIO_listen(int sock, const BIO_ADDR *addr, int options);
|
|
int BIO_accept_ex(int accept_sock, BIO_ADDR *peer, int options);
|
|
int BIO_closesocket(int sock);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
BIO_socket() creates a socket in the domain B<domain>, of type
|
|
B<socktype> and B<protocol>. Socket B<options> are currently unused,
|
|
but is present for future use.
|
|
|
|
BIO_connect() connects B<sock> to the address and service given by
|
|
B<addr>. Connection B<options> may be zero or any combination of
|
|
B<BIO_SOCK_KEEPALIVE>, B<BIO_SOCK_NONBLOCK> and B<BIO_SOCK_NODELAY>.
|
|
The flags are described in L</FLAGS> below.
|
|
|
|
BIO_listen() has B<sock> start listening on the address and service
|
|
given by B<addr>. Connection B<options> may be zero or any
|
|
combination of B<BIO_SOCK_KEEPALIVE>, B<BIO_SOCK_NONBLOCK>,
|
|
B<BIO_SOCK_NODELAY>, B<BIO_SOCK_REUSEADDR> and B<BIO_SOCK_V6_ONLY>.
|
|
The flags are described in L</FLAGS> below.
|
|
|
|
BIO_accept_ex() waits for an incoming connections on the given
|
|
socket B<accept_sock>. When it gets a connection, the address and
|
|
port of the peer gets stored in B<peer> if that one is non-NULL.
|
|
Accept B<options> may be zero or B<BIO_SOCK_NONBLOCK>, and is applied
|
|
on the accepted socket. The flags are described in L</FLAGS> below.
|
|
|
|
BIO_closesocket() closes B<sock>.
|
|
|
|
=head1 FLAGS
|
|
|
|
=over 4
|
|
|
|
=item BIO_SOCK_KEEPALIVE
|
|
|
|
Enables regular sending of keep-alive messages.
|
|
|
|
=item BIO_SOCK_NONBLOCK
|
|
|
|
Sets the socket to non-blocking mode.
|
|
|
|
=item BIO_SOCK_NODELAY
|
|
|
|
Corresponds to B<TCP_NODELAY>, and disables the Nagle algorithm. With
|
|
this set, any data will be sent as soon as possible instead of being
|
|
buffered until there's enough for the socket to send out in one go.
|
|
|
|
=item BIO_SOCK_REUSEADDR
|
|
|
|
Try to reuse the address and port combination for a recently closed
|
|
port.
|
|
|
|
=item BIO_SOCK_V6_ONLY
|
|
|
|
When creating an IPv6 socket, make it only listen for IPv6 addresses
|
|
and not IPv4 addresses mapped to IPv6.
|
|
|
|
=back
|
|
|
|
These flags are bit flags, so they are to be combined with the
|
|
C<|> operator, for example:
|
|
|
|
BIO_connect(sock, addr, BIO_SOCK_KEEPALIVE | BIO_SOCK_NONBLOCK);
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
BIO_socket() returns the socket number on success or B<INVALID_SOCKET>
|
|
(-1) on error. When an error has occurred, the OpenSSL error stack
|
|
will hold the error data and errno has the system error.
|
|
|
|
BIO_connect() and BIO_listen() return 1 on success or 0 on error.
|
|
When an error has occurred, the OpenSSL error stack will hold the error
|
|
data and errno has the system error.
|
|
|
|
BIO_accept_ex() returns the accepted socket on success or
|
|
B<INVALID_SOCKET> (-1) on error. When an error has occurred, the
|
|
OpenSSL error stack will hold the error data and errno has the system
|
|
error.
|
|
|
|
=head1 HISTORY
|
|
|
|
BIO_gethostname(), BIO_get_port(), BIO_get_host_ip(),
|
|
BIO_get_accept_socket() and BIO_accept() are deprecated since OpenSSL
|
|
1.1. Use the functions described above instead.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<BIO_ADDR(3)>
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the OpenSSL license (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|