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<link title="Get" rel="Chapter" href="Get.html"><title>Ocamlnet 4 Reference Manual : Rpc_portmapper</title>
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<h1>Module <a href="type_Rpc_portmapper.html">Rpc_portmapper</a></h1>
<pre><span id="MODULERpc_portmapper"><span class="keyword">module</span> Rpc_portmapper</span>: <code class="code">sig</code> <a href="Rpc_portmapper.html">..</a> <code class="code">end</code></pre><div class="info module top">
<div class="info-desc">
<p>Portmapper/RPCBIND interface</p>
</div>
</div>
<hr width="100%">
<p>RPC programs are usually registered with a daemon that is known under
two names: Portmapper or RPCBIND. The name Portmapper normally refers
to version 2 of the registry, whereas RPCBIND refers to versions 3 and
4. Version 2 is limited to IPv4 whereas the newer versions also support
IPv6 and Unix Domain sockets.</p>
<p>Recent Linux and BSD distributions deploy a version of RPCBIND that
is a port of Sun's original RPCBIND software. Older distributions only
support Portmapper.</p>
<p>Most of the following calls invoke Portmapper procedures only. The
calls with the suffix <code class="code">_rpcbind</code> first invoked RPCBIND procedures,
and if there is no support for RPCBIND, these calls fall back to
Portmapper (and limited functionality).</p>
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type"></code>t</span> </pre>
<div class="info ">
<div class="info-desc">
<p>represents a client for the Portmapper/RPCBIND daemon</p>
</div>
</div>
<pre><span id="VALcreate"><span class="keyword">val</span> create</span> : <code class="type">?esys:<a href="Unixqueue.event_system-c.html">Unixqueue.event_system</a> -> <a href="Rpc_client.html#TYPEconnector">Rpc_client.connector</a> -> <a href="Rpc_portmapper.html#TYPEt">t</a></code></pre><div class="info ">
<div class="info-desc">
<p>Connects to the Portmapper/RPCBIND service listening on the given
connector.</p>
</div>
</div>
<pre><span id="VALcreate_inet"><span class="keyword">val</span> create_inet</span> : <code class="type">?esys:<a href="Unixqueue.event_system-c.html">Unixqueue.event_system</a> -> string -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> <a href="Rpc_portmapper.html#TYPEt">t</a></code></pre><div class="info ">
<div class="info-desc">
<p>Connects to a Portmapper/RPCBIND listening on an Internet port. The
argument
is the hostname where the portmapper is running or its internet
address. This function connects always to the port 111 on the given
host; this is the standard for portmapper daemons.</p>
</div>
</div>
<pre><span id="VALcreate_local"><span class="keyword">val</span> create_local</span> : <code class="type">?esys:<a href="Unixqueue.event_system-c.html">Unixqueue.event_system</a> -> unit -> <a href="Rpc_portmapper.html#TYPEt">t</a></code></pre><div class="info ">
<div class="info-desc">
<p>Connects to the local Portmapper/RPCBIND daemon. Such a client must
only be used for setting and unsetting entries.</p>
</div>
</div>
<pre><span id="VALshut_down"><span class="keyword">val</span> shut_down</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -> unit</code></pre><div class="info ">
<div class="info-desc">
<p>Shuts down the connection</p>
</div>
</div>
<pre><span id="VALnull"><span class="keyword">val</span> null</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -> unit</code></pre><div class="info ">
<div class="info-desc">
<p>Calls the 'NULL' procedure of the portmapper. This procedure has no
effect. You can use 'null' to determine whether a procedure call is
possible or not.</p>
</div>
</div>
<pre><span id="VALnull'async"><span class="keyword">val</span> null'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -> ((unit -> unit) -> unit) -> unit</code></pre>
<pre><span id="VALset"><span class="keyword">val</span> set</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> int -> bool</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">set pm_client program_nr version_nr protocol port_nr</code>:
Extends the mapping managed by the Portmapper: The triple
<code class="code">(program_nr, version_nr, protocol)</code> is mapped to the given
<code class="code">port_nr</code>.
It is not allowed to overwrite an existing mapping.
The procedure returns <code class="code">true</code> if the mapping has been extended
and <code class="code">false</code> otherwise.
Note that it usually only possible to <code class="code">set</code> a mapping on the local
host.</p>
</div>
</div>
<pre><span id="VALset'async"><span class="keyword">val</span> set'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> int -> ((unit -> bool) -> unit) -> unit</code></pre>
<pre><span id="VALset_rpcbind"><span class="keyword">val</span> set_rpcbind</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> string -> string -> string -> bool</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">set_rpcbind pm_client program_nr version_nr netid uaddr owner</code>:</p>
<p>Sets an RPCBIND mapping, and if RPCBIND is not supported, the
corresponding Portmapper mapping so far possible (when netid is
"tcp" or "udp").</p>
<p>The triple <code class="code">(program_nr, version_nr, netid)</code> is mapped to
<code class="code">(uaddr,owner)</code>. Netids can be:</p>
<ul>
<li>"tcp" (only IPv4)</li>
<li>"tcp6"</li>
<li>"udp" (only IPv4)</li>
<li>"udp6"</li>
<li>"local"</li>
</ul>
<p>For uaddr see RFC 5665 and <a href="Rpc.html#VALcreate_inet_uaddr"><code class="code">Rpc.create_inet_uaddr</code></a>,
<a href="Rpc.html#VALparse_inet_uaddr"><code class="code">Rpc.parse_inet_uaddr</code></a>.</p>
</div>
</div>
<pre><span id="VALset_rpcbind'async"><span class="keyword">val</span> set_rpcbind'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> string -> string -> string -> ((unit -> bool) -> unit) -> unit</code></pre>
<pre><span id="VALunset"><span class="keyword">val</span> unset</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> int -> bool</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">unset pm_client program_nr version_nr protocol port_nr</code>:
removes the mapping.
The procedure returns <code class="code">true</code> if the mapping has been removed
and <code class="code">false</code> otherwise.
Note that it usually only possible to <code class="code">unset</code> a mapping on the local
host.</p>
</div>
</div>
<pre><span id="VALunset'async"><span class="keyword">val</span> unset'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> int -> ((unit -> bool) -> unit) -> unit</code></pre>
<pre><span id="VALunset_rpcbind"><span class="keyword">val</span> unset_rpcbind</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> string -> string -> string -> bool</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">set_rpcbind pm_client program_nr version_nr netid uaddr owner</code>.</p>
<p>Unsets an RPCBIND mapping, and if RPCBIND is not supported, the
corresponding Portmapper mapping so far possible (when netid is
"tcp" or "udp").</p>
<p>Note that it is unspecified what to do with <code class="code">uaddr</code> and <code class="code">owner</code>.
These arguments appear in the formal specification but are not
described in the RFC. It is probably best to pass empty strings.</p>
<p>You can call this function with <code class="code">netid=""</code> to remove all entries
for the pair <code class="code">(program_nr,version_nr)</code>.</p>
</div>
</div>
<pre><span id="VALunset_rpcbind'async"><span class="keyword">val</span> unset_rpcbind'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> string -> string -> string -> ((unit -> bool) -> unit) -> unit</code></pre>
<pre><span id="VALgetport"><span class="keyword">val</span> getport</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> int</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">getport pm_client program_nr version_nr protocol</code>:
finds out the port where the given service runs. Returns 0 if the
service is not registered.</p>
</div>
</div>
<pre><span id="VALgetport'async"><span class="keyword">val</span> getport'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> ((unit -> int) -> unit) -> unit</code></pre>
<pre><span id="VALgetaddr_rpcbind"><span class="keyword">val</span> getaddr_rpcbind</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -> string -> string -> string option</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">getaddr_rpcbind pm_client program_nr version_nr netid caller_uaddr</code>:</p>
<p>Gets the uaddr for the triple <code class="code">(program_nr,version_nr,netid)</code> (or ""
if not found). You can pass <code class="code">netid=""</code> to get the uaddr for the
netid of the transport on which RPCBIND is invoked (e.g. if you call
RPCBIND on TCP/IPv6 you get the uaddr for netid="tcp6").</p>
<p>Experimentation shows that the RPCBIND daemon on Linux does not
correctly respond when netid is not the empty string. Because of this
it is recommended to set netid always to the empty string.</p>
<p>You can pass the uaddr of the caller as <code class="code">caller_uaddr</code> to get a more
precise response. Normally set <code class="code">caller_uaddr=""</code>, though.</p>
<p>Falls back to Portmapper version 2 if RPCBIND isn't available. In
this case you cannot retrieve IPv6 entries even if you contact
Portmapper via IPv6.</p>
</div>
</div>
<pre><span id="VALgetaddr_rpcbind'async"><span class="keyword">val</span> getaddr_rpcbind'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> -><br> string -> string -> ((unit -> string option) -> unit) -> unit</code></pre>
<pre><span id="VALdump"><span class="keyword">val</span> dump</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> (<a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> * <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> * <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> * int) list</code></pre><div class="info ">
<div class="info-desc">
<p>returns the list of known mappings. The quadrupels have the meaning
<code class="code">(program_nr, version_nr, protocol, port)</code></p>
</div>
</div>
<pre><span id="VALdump'async"><span class="keyword">val</span> dump'async</span> : <code class="type"><a href="Rpc_portmapper.html#TYPEt">t</a> -><br> ((unit -> (<a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> * <a href="Netnumber.html#TYPEuint4">Netnumber.uint4</a> * <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> * int) list) -><br> unit) -><br> unit</code></pre>
<pre><span id="VALport_of_program"><span class="keyword">val</span> port_of_program</span> : <code class="type"><a href="Rpc_program.html#TYPEt">Rpc_program.t</a> -> string -> <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a> -> int</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">port_of_program program host protocol</code>:
queries the portmapper running on <code class="code">host</code> for the <code class="code">program</code> registered
for <code class="code">protocol</code>.
Returns the port number or fails if the number is not known.</p>
</div>
</div>
<pre><span id="VALsockaddr_of_program_rpcbind"><span class="keyword">val</span> sockaddr_of_program_rpcbind</span> : <code class="type"><a href="Rpc_program.html#TYPEt">Rpc_program.t</a> -> string -> string -> Unix.sockaddr * <a href="Rpc.html#TYPEprotocol">Rpc.protocol</a></code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">sockaddr_of_program program host netid</code>: gets the sockaddr
for this program.</p>
<p>Falls back to portmapper version 2 if rpcbind isn't available.</p>
</div>
</div>
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