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<link title="Regexp" rel="Chapter" href="Regexp.html"><link title="How to configure a pipeline for TLS" rel="Section" href="#2_HowtoconfigureapipelineforTLS">
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<title>Ocamlnet 3 Reference Manual : Https_client</title>
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<h1>Module <a href="type_Https_client.html">Https_client</a></h1>
<pre><span class="keyword">module</span> Https_client: <code class="code">sig</code> <a href="Https_client.html">..</a> <code class="code">end</code></pre><div class="info">
HTTPS extension to <a href="Http_client.html"><code class="code">Http_client</code></a><br>
</div>
<hr width="100%">
<pre><span id="TYPEchannel_binding_id"><span class="keyword">type</span> <code class="type"></code>channel_binding_id</span> = <code class="type">int</code> </pre>
<div class="info">
Same as <a href="Http_client.html#TYPEchannel_binding_id"><code class="code">Http_client.channel_binding_id</code></a><br>
</div>
<pre><span id="TYPEtransport_channel_type"><span class="keyword">class type</span> <a href="Https_client.transport_channel_type-c.html">transport_channel_type</a></span> = <code class="code">object</code> <a href="Https_client.transport_channel_type-c.html">..</a> <code class="code">end</code></pre><div class="info">
Same as <a href="Http_client.transport_channel_type-c.html"><code class="code">Http_client.transport_channel_type</code></a>
</div>
<pre><span id="VALhttps_transport_channel_type"><span class="keyword">val</span> https_transport_channel_type</span> : <code class="type">?verify:(Ssl.context -> Ssl.socket -> Unix.file_descr -> unit) -><br> Ssl.context -> <a href="Https_client.transport_channel_type-c.html">transport_channel_type</a></code></pre><div class="info">
Configures a TLS tunnel for this context.
<p>
The <code class="code">verify</code> callback is invoked right after connecting to the
remote socket and finishing the SSL handshake. The user can do here
additional checks whether the peer is acceptable. If not acceptable,
raise an exception.<br>
</div>
<br>
<h2 id="2_HowtoconfigureapipelineforTLS">How to configure a pipeline for TLS</h2>
<p>
Just follow this recipe:
<p>
1. Create the <code class="code">Ssl</code> context:
<p>
<pre class="codepre"><code class="code"> Ssl.init() </code></pre>
<p>
<pre class="codepre"><code class="code"> let ctx = Ssl.create_context Ssl.TLSv1 Ssl.Client_context </code></pre>
<p>
2. Create the transport channel type:
<p>
<pre class="codepre"><code class="code"> let tct = Https_client.https_transport_channel_type ctx </code></pre>
<p>
3. Configure the transport:
<p>
<pre class="codepre"><code class="code"> pipeline # configure_transport Http_client.https_cb_id tct </code></pre>
<p>
Now all URLs starting with "https://" will use this transport.
If you need more control about the type of SSL/TLS channel, you
can create new channel binding IDs, and configure these in addition.
For each message needing a specific context, just set the
channel binding ID (method <code class="code">set_channel_binding</code> of the message).<br>
<br>
<h2 id="2_HowtoconfiguretheConveniencemodule">How to configure the Convenience module</h2>
<p>
Just do once:
<p>
<pre class="codepre"><code class="code"> Ssl.init();
Http_client.Convenience.configure_pipeline
(fun p ->
let ctx = Ssl.create_context Ssl.TLSv1 Ssl.Client_context in
let tct = Https_client.https_transport_channel_type ctx in
p # configure_transport Http_client.https_cb_id tct
)
</code></pre>
<p>
This will enable "https" for the functions in <a href="Http_client.Convenience.html"><code class="code">Http_client.Convenience</code></a>,
e.g. <pre class="codepre"><code class="code"> let data = Http_client.Convenience.http_get "https://url" </code></pre><br>
<br>
<h2 id="2_HowtoconfigureHttpfs">How to configure <a href="Http_fs.html"><code class="code">Http_fs</code></a></h2>
<p>
Just do once:
<p>
<pre class="codepre"><code class="code"> Ssl.init()
</code></pre>
<p>
and create the <code class="code">http_fs</code> object with
<p>
<pre class="codepre"><code class="code"> Http_fs.http_fs
~config_pipeline:(
fun p ->
let ctx = Ssl.create_context Ssl.TLSv1 Ssl.Client_context in
let tct = Https_client.https_transport_channel_type ctx in
p # configure_transport Http_client.https_cb_id tct
)
"https://root-url"
</code></pre><br>
<br>
<h2 id="2_Featuresandlimitations">Features and limitations</h2>
<p>
We only implement RFC 2618, i.e. secure connections on a separate
port (443 instead of 80). There is no support (yet) for RFC 2617,
i.e. upgrading an existing insecure connection to a secure one.
<p>
If an HTTP proxy server is configured, the TLS connection is established
via the CONNECT method (documented in RFC 2617).
<p>
Alternatively, it is also possible to connect via SOCKS version 5
proxies.
<p>
There is, so far, no support for reusing TLS sessions across connections.
For every connection a new TLS session is created.<br>
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