Update BIO_s_connect().

BIO_get_conn_ip() returns the IP address in binary form.

BIO_get_conn_int_port() returns the host name as an int.

BIO_get_conn_int_port() returns the port as an int.

BIO_set_nbio() sets the non blocking I/O flag to B<n>. If B<n> is

zero then blocking I/O is set. If B<n> is 1 then non blocking I/O

is set.

is set. Blocking I/O is the default. The call to BIO_set_nbio()

should be made before the connection is established because 

non blocking I/O is set during the connect process.

BIO_do_connect() attempts to connect the supplied BIO. It returns 1

if the connection was established successfully. A zero or negative

call BIO_should_retry() should be used for non blocking connect BIOs

to determine if the call should be retried.

=head1 NOTES

If blocking I/O is set then a non positive return value from any

will normally mean that the connection was closed.

If the port name is supplied as part of the host name then this will

override any value set with BIO_set_conn_port().

override any value set with BIO_set_conn_port(). This may be undesirable

if the application does not wish to allow connection to arbitrary

ports. This can be avoided by checking for the presence of the ':'

character in the passed hostname and either indicating an error or

truncating the string at that point.

The values returned by BIO_get_conn_hostname(), BIO_get_conn_port(),

BIO_get_conn_ip() and BIO_get_conn_int_port() are updated when a

connection attempt is made. Before any connection attempt the values

returned are those set by the application itself.

Applications do not have to call BIO_do_connect() but can do so to

separate the connection process from other I/O processing.

Applications do not have to call BIO_do_connect() but may wish to do

so to separate the connection process from other I/O processing.

If non blocking I/O is set then retries will be requested as appropriate.

BIO_get_fd() returns the socket or -1 if the BIO has not

been initialised.

=head1 EXAMPLES

BIO_set_conn_hostname(), BIO_set_conn_port(), BIO_set_conn_ip() and

BIO_set_conn_int_port() always return 1.

BIO_get_conn_hostname() returns the connected hostname or NULL is

none was set.

BIO_get_conn_port() returns a string representing the connected

port or NULL if not set.

BIO_get_conn_ip() returns a pointer to the connected IP address in

binary form or all zeros if not set.

BIO_get_conn_int_port() returns the connected port or 0 if none was

set.

BIO_set_nbio() always returns 1.

BIO_do_connect() returns 1 if the connection was successfully

established and 0 or -1 if the connection failed.

=head1 EXAMPLE

This is example connects to a webserver on the local host and attempts

to retrieve a page and copy the result to standard output.

 BIO *cbio, *out;

 int len;

 char tmpbuf[1024];

 ERR_load_crypto_strings();

 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\n");

	ERR_print_errors_fp(stderr);

	/* whatever ... */

	}

 BIO_puts(cbio, "GET / HTTP/1.0\n\n");

 for(;;) {	

	len = BIO_read(cbio, tmpbuf, 1024);

	if(len <= 0) break;

	BIO_write(out, tmpbuf, len);

 }

 BIO_free(cbio);

 BIO_free(out);

TBA

=head1 SEE ALSO