Diff
EuroTcl/OpenACS 11 - 12 JULY 2024, VIENNA

Differences From Artifact [6ba0c48ef9]:

To Artifact [9f9597a4e4]:


689
690
691
692
693
694
695






696
697
698
699
700
701
702
703
704
705
706
707
708
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704



705
706
707
708
709
710
711







+
+
+
+
+
+



-
-
-








<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

<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>

<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 \
748
749
750
751
752
753
754
755
756
757





758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773

774




775















776

777
778
779
780
781
782
783
784
785
786
787
788
789
790
791


792
793
794
795
796
797

798
799
800
751
752
753
754
755
756
757



758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779

780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814


815
816
817
818
819
820
821
822
823
824
825
826







-
-
-
+
+
+
+
+
















+
-
+
+
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

+













-
-
+
+






+



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>
<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
puts [string length $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><a
href="http://www.openssl.org/"><strong>OpenSSL</strong></a></p>
<p><strong>socket</strong>, <strong>fileevent</strong>, <strong>http</strong>,
<a href="http://www.openssl.org/"><strong>OpenSSL</strong></a></p>

<hr>

<pre>
Copyright &copy; 1999 Matt Newman.
Copyright &copy; 2004 Starfish Systems.
Copyright &copy; 2023 Brian O'Hagan.
</pre>
</body>
</html>