forked from cory/tildefriends
Add prebuild OpenSSL, and remove SCHANNEL code and whatever it was on MacOS. Build mingw for 64-bit.
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4088 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
338
deps/openssl/mingw64/share/man/man3/BIO_s_connect.3
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.\" ========================================================================
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.\"
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.IX Title "BIO_S_CONNECT 3"
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.TH BIO_S_CONNECT 3 "2020-04-21" "1.1.1g" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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BIO_set_conn_address, BIO_get_conn_address, BIO_s_connect, BIO_new_connect, BIO_set_conn_hostname, BIO_set_conn_port, BIO_set_conn_ip_family, BIO_get_conn_ip_family, BIO_get_conn_hostname, BIO_get_conn_port, BIO_set_nbio, BIO_do_connect \- connect BIO
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/bio.h>
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\&
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\& const BIO_METHOD * BIO_s_connect(void);
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\&
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\& BIO *BIO_new_connect(char *name);
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\&
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\& long BIO_set_conn_hostname(BIO *b, char *name);
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\& long BIO_set_conn_port(BIO *b, char *port);
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\& long BIO_set_conn_address(BIO *b, BIO_ADDR *addr);
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\& long BIO_set_conn_ip_family(BIO *b, long family);
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\& const char *BIO_get_conn_hostname(BIO *b);
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\& const char *BIO_get_conn_port(BIO *b);
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\& const BIO_ADDR *BIO_get_conn_address(BIO *b);
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\& const long BIO_get_conn_ip_family(BIO *b);
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\&
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\& long BIO_set_nbio(BIO *b, long n);
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\&
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\& int BIO_do_connect(BIO *b);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fBBIO_s_connect()\fR returns the connect \s-1BIO\s0 method. This is a wrapper
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round the platform's \s-1TCP/IP\s0 socket connection routines.
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.PP
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Using connect BIOs, \s-1TCP/IP\s0 connections can be made and data
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transferred using only \s-1BIO\s0 routines. In this way any platform
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specific operations are hidden by the \s-1BIO\s0 abstraction.
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.PP
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Read and write operations on a connect \s-1BIO\s0 will perform I/O
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on the underlying connection. If no connection is established
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and the port and hostname (see below) is set up properly then
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a connection is established first.
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.PP
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Connect BIOs support \fBBIO_puts()\fR but not \fBBIO_gets()\fR.
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.PP
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If the close flag is set on a connect \s-1BIO\s0 then any active
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connection is shutdown and the socket closed when the \s-1BIO\s0
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is freed.
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.PP
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Calling \fBBIO_reset()\fR on a connect \s-1BIO\s0 will close any active
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connection and reset the \s-1BIO\s0 into a state where it can connect
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to the same host again.
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.PP
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\&\fBBIO_get_fd()\fR places the underlying socket in \fBc\fR if it is not \s-1NULL,\s0
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it also returns the socket . If \fBc\fR is not \s-1NULL\s0 it should be of
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type (int *).
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.PP
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\&\fBBIO_set_conn_hostname()\fR uses the string \fBname\fR to set the hostname.
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The hostname can be an \s-1IP\s0 address; if the address is an IPv6 one, it
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must be enclosed with brackets. The hostname can also include the
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port in the form hostname:port.
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.PP
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\&\fBBIO_set_conn_port()\fR sets the port to \fBport\fR. \fBport\fR can be the
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numerical form or a string such as \*(L"http\*(R". A string will be looked
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up first using \fBgetservbyname()\fR on the host platform but if that
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fails a standard table of port names will be used. This internal
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list is http, telnet, socks, https, ssl, ftp, and gopher.
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.PP
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\&\fBBIO_set_conn_address()\fR sets the address and port information using
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a \s-1\fBBIO_ADDR\s0\fR\|(3ssl).
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.PP
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\&\fBBIO_set_conn_ip_family()\fR sets the \s-1IP\s0 family.
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.PP
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\&\fBBIO_get_conn_hostname()\fR returns the hostname of the connect \s-1BIO\s0 or
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\&\s-1NULL\s0 if the \s-1BIO\s0 is initialized but no hostname is set.
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This return value is an internal pointer which should not be modified.
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.PP
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\&\fBBIO_get_conn_port()\fR returns the port as a string.
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This return value is an internal pointer which should not be modified.
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.PP
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\&\fBBIO_get_conn_address()\fR returns the address information as a \s-1BIO_ADDR.\s0
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This return value is an internal pointer which should not be modified.
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.PP
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\&\fBBIO_get_conn_ip_family()\fR returns the \s-1IP\s0 family of the connect \s-1BIO.\s0
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.PP
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\&\fBBIO_set_nbio()\fR sets the non blocking I/O flag to \fBn\fR. If \fBn\fR is
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zero then blocking I/O is set. If \fBn\fR is 1 then non blocking I/O
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is set. Blocking I/O is the default. The call to \fBBIO_set_nbio()\fR
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should be made before the connection is established because
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non blocking I/O is set during the connect process.
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.PP
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\&\fBBIO_new_connect()\fR combines \fBBIO_new()\fR and \fBBIO_set_conn_hostname()\fR into
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a single call: that is it creates a new connect \s-1BIO\s0 with \fBname\fR.
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.PP
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\&\fBBIO_do_connect()\fR attempts to connect the supplied \s-1BIO.\s0 It returns 1
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if the connection was established successfully. A zero or negative
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value is returned if the connection could not be established, the
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call \fBBIO_should_retry()\fR should be used for non blocking connect BIOs
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to determine if the call should be retried.
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.SH "NOTES"
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.IX Header "NOTES"
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If blocking I/O is set then a non positive return value from any
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I/O call is caused by an error condition, although a zero return
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will normally mean that the connection was closed.
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.PP
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If the port name is supplied as part of the host name then this will
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override any value set with \fBBIO_set_conn_port()\fR. This may be undesirable
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if the application does not wish to allow connection to arbitrary
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ports. This can be avoided by checking for the presence of the ':'
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character in the passed hostname and either indicating an error or
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truncating the string at that point.
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.PP
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The values returned by \fBBIO_get_conn_hostname()\fR, \fBBIO_get_conn_address()\fR,
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and \fBBIO_get_conn_port()\fR are updated when a connection attempt is made.
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Before any connection attempt the values returned are those set by the
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application itself.
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.PP
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Applications do not have to call \fBBIO_do_connect()\fR but may wish to do
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so to separate the connection process from other I/O processing.
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.PP
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If non blocking I/O is set then retries will be requested as appropriate.
|
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.PP
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||||
It addition to \fBBIO_should_read()\fR and \fBBIO_should_write()\fR it is also
|
||||
possible for \fBBIO_should_io_special()\fR to be true during the initial
|
||||
connection process with the reason \s-1BIO_RR_CONNECT.\s0 If this is returned
|
||||
then this is an indication that a connection attempt would block,
|
||||
the application should then take appropriate action to wait until
|
||||
the underlying socket has connected and retry the call.
|
||||
.PP
|
||||
\&\fBBIO_set_conn_hostname()\fR, \fBBIO_set_conn_port()\fR, \fBBIO_get_conn_hostname()\fR,
|
||||
\&\fBBIO_set_conn_address()\fR, \fBBIO_get_conn_port()\fR, \fBBIO_get_conn_address()\fR,
|
||||
\&\fBBIO_set_conn_ip_family()\fR, \fBBIO_get_conn_ip_family()\fR,
|
||||
\&\fBBIO_set_nbio()\fR, and \fBBIO_do_connect()\fR are macros.
|
||||
.SH "RETURN VALUES"
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||||
.IX Header "RETURN VALUES"
|
||||
\&\fBBIO_s_connect()\fR returns the connect \s-1BIO\s0 method.
|
||||
.PP
|
||||
\&\fBBIO_get_fd()\fR returns the socket or \-1 if the \s-1BIO\s0 has not
|
||||
been initialized.
|
||||
.PP
|
||||
\&\fBBIO_set_conn_address()\fR, \fBBIO_set_conn_port()\fR, and \fBBIO_set_conn_ip_family()\fR
|
||||
always return 1.
|
||||
.PP
|
||||
\&\fBBIO_set_conn_hostname()\fR returns 1 on success and 0 on failure.
|
||||
.PP
|
||||
\&\fBBIO_get_conn_address()\fR returns the address information or \s-1NULL\s0 if none
|
||||
was set.
|
||||
.PP
|
||||
\&\fBBIO_get_conn_hostname()\fR returns the connected hostname or \s-1NULL\s0 if
|
||||
none was set.
|
||||
.PP
|
||||
\&\fBBIO_get_conn_ip_family()\fR returns the address family or \-1 if none was set.
|
||||
.PP
|
||||
\&\fBBIO_get_conn_port()\fR returns a string representing the connected
|
||||
port or \s-1NULL\s0 if not set.
|
||||
.PP
|
||||
\&\fBBIO_set_nbio()\fR always returns 1.
|
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.PP
|
||||
\&\fBBIO_do_connect()\fR returns 1 if the connection was successfully
|
||||
established and 0 or \-1 if the connection failed.
|
||||
.SH "EXAMPLES"
|
||||
.IX Header "EXAMPLES"
|
||||
This is example connects to a webserver on the local host and attempts
|
||||
to retrieve a page and copy the result to standard output.
|
||||
.PP
|
||||
.Vb 3
|
||||
\& BIO *cbio, *out;
|
||||
\& int len;
|
||||
\& char tmpbuf[1024];
|
||||
\&
|
||||
\& cbio = BIO_new_connect("localhost:http");
|
||||
\& out = BIO_new_fp(stdout, BIO_NOCLOSE);
|
||||
\& if (BIO_do_connect(cbio) <= 0) {
|
||||
\& fprintf(stderr, "Error connecting to server\en");
|
||||
\& ERR_print_errors_fp(stderr);
|
||||
\& exit(1);
|
||||
\& }
|
||||
\& BIO_puts(cbio, "GET / HTTP/1.0\en\en");
|
||||
\& for (;;) {
|
||||
\& len = BIO_read(cbio, tmpbuf, 1024);
|
||||
\& if (len <= 0)
|
||||
\& break;
|
||||
\& BIO_write(out, tmpbuf, len);
|
||||
\& }
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\& BIO_free(cbio);
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||||
\& BIO_free(out);
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.Ve
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
|
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\&\s-1\fBBIO_ADDR\s0\fR\|(3)
|
||||
.SH "HISTORY"
|
||||
.IX Header "HISTORY"
|
||||
\&\fBBIO_set_conn_int_port()\fR, \fBBIO_get_conn_int_port()\fR, \fBBIO_set_conn_ip()\fR, and \fBBIO_get_conn_ip()\fR
|
||||
were removed in OpenSSL 1.1.0.
|
||||
Use \fBBIO_set_conn_address()\fR and \fBBIO_get_conn_address()\fR instead.
|
||||
.SH "COPYRIGHT"
|
||||
.IX Header "COPYRIGHT"
|
||||
Copyright 2000\-2019 The OpenSSL Project Authors. All Rights Reserved.
|
||||
.PP
|
||||
Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
|
||||
this file except in compliance with the License. You can obtain a copy
|
||||
in the file \s-1LICENSE\s0 in the source distribution or at
|
||||
<https://www.openssl.org/source/license.html>.
|
||||
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