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<title>Ocamlnet 4 Reference Manual : Netpop</title>
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<h1>Module <a href="type_Netpop.html">Netpop</a></h1>
<pre><span id="MODULENetpop"><span class="keyword">module</span> Netpop</span>: <code class="code">sig</code> <a href="Netpop.html">..</a> <code class="code">end</code></pre><div class="info module top">
<div class="info-desc">
<p>This is an interface for the Post Office Protocol - Version 3
(POP3) as specifed by RFC 1939. The protocol is intended to permit
a workstation to dynamically access a maildrop on a server host in
a useful fashion.</p>
</div>
</div>
<hr width="100%">
<pre><span id="TYPEstate"><span class="keyword">type</span> <code class="type"></code>state</span> = <code class="type">[ `Authorization | `Transaction | `Update ]</code> </pre>
<pre><span id="EXCEPTIONProtocol_error"><span class="keyword">exception</span> Protocol_error</span></pre>
<pre><span id="EXCEPTIONAuthentication_error"><span class="keyword">exception</span> Authentication_error</span></pre>
<pre><span id="EXCEPTIONErr_status"><span class="keyword">exception</span> Err_status</span> <span class="keyword">of</span> <code class="type">string</code></pre>
<pre><span id="EXCEPTIONBad_state"><span class="keyword">exception</span> Bad_state</span></pre>
<pre><span id="VALtcp_port"><span class="keyword">val</span> tcp_port</span> : <code class="type">int</code></pre><div class="info ">
<div class="info-desc">
<p>Default TCP port for POP version 3</p>
</div>
</div>
<pre><span id="TYPEclient"><span class="keyword">class</span> <a href="Netpop.client-c.html">client</a></span> : <code class="type"><a href="Netchannels.in_obj_channel-c.html">Netchannels.in_obj_channel</a> -> <a href="Netchannels.out_obj_channel-c.html">Netchannels.out_obj_channel</a> -> </code><code class="code">object</code> <a href="Netpop.client-c.html">..</a> <code class="code">end</code></pre><div class="info">
<p>The class <code class="code">client</code> implements the POP3 protocol.</p>
</div>
<pre><span id="TYPEconnect"><span class="keyword">class</span> <a href="Netpop.connect-c.html">connect</a></span> : <code class="type">?proxy:#<a href="Uq_engines.client_endpoint_connector-c.html">Uq_engines.client_endpoint_connector</a> -> <a href="Uq_engines.html#TYPEconnect_address">Uq_engines.connect_address</a> -> float -> </code><code class="type"><a href="Netpop.client-c.html">client</a></code></pre><div class="info">
<p><code class="code">connect addr timeout</code>: Connects with the server at <code class="code">addr</code>, and
configure that I/O operations time out after <code class="code">timeout</code> seconds of
waiting.</p>
</div>
<pre><span id="VALauthenticate"><span class="keyword">val</span> authenticate</span> : <code class="type">?tls_config:<a href="Netsys_crypto_types.html#TYPEtls_config">Netsys_crypto_types.tls_config</a> -><br> ?tls_required:bool -><br> ?tls_peer:string -><br> ?sasl_mechs:<a href="Netsys_sasl.html#TYPEsasl_mechanism">Netsys_sasl.sasl_mechanism</a> list -><br> ?sasl_params:(string * string * bool) list -><br> ?user:string -><br> ?authz:string -> ?creds:<a href="Netsys_sasl.html#TYPEcredentials">Netsys_sasl.credentials</a> -> <a href="Netpop.client-c.html">client</a> -> unit</code></pre><div class="info ">
<div class="info-desc">
<p>Authenticates the session:</p>
<ul>
<li>requests capabilitlies</li>
<li>if the server supports TLS, and <code class="code">tls_config</code> is set, the
TLS session is started, and the capabilities are refreshed.</li>
<li>if SASL support is announced by the server, one of the <code class="code">sasl_mechs</code>
is taken and used for authentication. If <code class="code">sasl_mechs</code> is empty,
this authentication step is skipped.</li>
</ul>
<p>Options:</p>
<ul>
<li><code class="code">tls_config</code>: if set, TLS is tried on the connection</li>
<li><code class="code">tls_required</code>: if set, it is even required that TLS is supported.
If not, a <a href="Netsys_types.html#EXCEPTIONTLS_error"><code class="code">Netsys_types.TLS_error</code></a> exception is raised.</li>
<li><code class="code">tls_peer</code>: the host name of the server (only needed for TLS, and
only needed if the TLS configuration authenticates the server, or
if the SNI extension is active)</li>
<li><code class="code">sasl_mechs</code>: available SASL mechanisms (in order of preference).
If you pass mechanisms, you'll normally also need to pass <code class="code">user</code>
and <code class="code">creds</code>.</li>
<li><code class="code">sasl_params</code>: parameters for SASL. A "digest-uri" parameter is
always generated, and need not to be set</li>
<li><code class="code">user</code>: the user name to authenticate as</li>
<li><code class="code">authz</code>: the identity to act as (authorization name)</li>
<li><code class="code">creds</code>: credentials</li>
</ul>
<p>You can get a simple TLS configuration with:</p>
<pre class="codepre"><code class="code">let tls_config =
Netsys_tls.create_x509_config
~system_trust:true
~peer_auth:`Required
(Netsys_crypto.current_tls())
</code></pre>
<p>SASL example:</p>
<pre class="codepre"><code class="code">Netpop.authenticate
~sasl_mechs:[ (module Netmech_scram_sasl.SCRAM_SHA1);
(module Netmech_digest_sasl.DIGEST_MD5);
]
~user:"tom"
~creds:[ "password", "sEcReT", [] ]
client
</code></pre></div>
</div>
<h2 id="1_Debugging">Debugging</h2>
<pre><span id="MODULEDebug"><span class="keyword">module</span> <a href="Netpop.Debug.html">Debug</a></span>: <code class="code">sig</code> <a href="Netpop.Debug.html">..</a> <code class="code">end</code></pre></body></html>
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