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<p>
<em>
The use of the variable <strong>tls::debug</strong> is not recommended.
It may be removed from future releases.
</em>
</p>
<br>
Example #1: Use HTTP package
<p>This example uses the default Unix platform SSL certificates. For standard
installations, -cadir and -cafile should not be needed. Update -cadir or
replace with -cafile if your platform differs.</p>
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<p>
<em>
The use of the variable <strong>tls::debug</strong> is not recommended.
It may be removed from future releases.
</em>
</p>
<h4><a name="DEBUG_EXAMPLES">Debug Examples</a></h4>
<p>These examples use the default Unix platform SSL certificates. For standard
installations, -cadir and -cafile should not be needed. If your certificates
are in non-standard locations, update -cadir or use -cafile as needed.</p>
<br>
Example #1: Use HTTP package
<pre><code>
package require http
package require tls
set url "https://www.tcl.tk/"
http::register https 443 [list ::tls::socket -autoservername true -require true -cadir /etc/ssl/certs \
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parray conn
parray chan
</code></pre>
<h3><a name="HTTPS EXAMPLE">HTTPS EXAMPLE</a></h3>
<p>This example uses the default Unix platform SSL certificates. For standard
installations, -cadir and -cafile should not be needed. Update -cadir or
replace with -cafile if your platform differs.</p>
puts [string length $data]
<p><strong>socket</strong>, <strong>fileevent, </strong><a
href="http://www.openssl.org/"><strong>OpenSSL</strong></a></p>
<hr>
<pre>
Copyright © 1999 Matt Newman.
Copyright © 2004 Starfish Systems.
</pre>
</body>
</html>
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parray conn
parray chan
</code></pre>
<h3><a name="HTTPS EXAMPLE">HTTPS EXAMPLE</a></h3>
<p>These examples use the default Unix platform SSL certificates. For standard
installations, -cadir and -cafile should not be needed. If your certificates
are in non-standard locations, update -cadir or use -cafile as needed.</p>
Example #1: Get web page
<pre><code>
package require http
package require tls
set url "https://www.tcl.tk/"
http::register https 443 [list ::tls::socket -autoservername true -require true -cadir /etc/ssl/certs]
# Check for error
set token [http::geturl $url]
if {[http::status $token] ne "ok"} {
puts [format "Error %s" [http::status $token]]
}
# Get web page
set data [http::data $token]
puts $data
# Cleanup
::http::cleanup $token
</code></pre>
Example #2: Download file
<pre><code>
package require http
package require tls
set url "https://wiki.tcl-lang.org/sitemap.xml"
set filename [file tail $url]
http::register https 443 [list ::tls::socket -autoservername true -require true -cadir /etc/ssl/certs]
# Get file
set ch [open $filename wb]
set token [::http::geturl $url -blocksize 65536 -channel $ch]
# Cleanup
close $ch
::http::cleanup $token
</code></pre>
<h3><a name="SPECIAL CONSIDERATIONS">SPECIAL CONSIDERATIONS</a></h3>
<p>The capabilities of this package can vary enormously based upon how the
linked to OpenSSL library was configured and built. New versions may obsolete
older protocol versions, add or remove ciphers, change default values, etc.
Use the <strong>tls::protocols</strong> commands to obtain the supported
protocol versions.</p>
<h3><a name="SEE ALSO">SEE ALSO</a></h3>
<p><strong>socket</strong>, <strong>fileevent</strong>, <strong>http</strong>,
<a href="http://www.openssl.org/"><strong>OpenSSL</strong></a></p>
<hr>
<pre>
Copyright © 1999 Matt Newman.
Copyright © 2004 Starfish Systems.
Copyright © 2023 Brian O'Hagan.
</pre>
</body>
</html>
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