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<?xml version="1.0"?>
<!DOCTYPE gsdoc PUBLIC "-//GNUstep//DTD gsdoc 1.0.4//EN" "http://www.gnustep.org/gsdoc-1_0_4.dtd">
<gsdoc base="NSPortMessage" up="Base">
  <head>
    <title>NSPortMessage class reference</title>
    <author name="Richard Frith-Macdonald">
      <email address="richard@brainstorm.co.uk">
        richard@brainstorm.co.uk
      </email>
    </author>
    <copy>1998,2000 Free Software Foundation, Inc.</copy>
  </head>
  <body>
    <front><contents /></front>
    <chapter>
      <heading>
        Software documentation for the NSPortMessage class
      </heading>
      <class name="NSPortMessage" super="NSObject" ovadd="1.0.0">
        <declared>Foundation/NSPortMessage.h</declared>
        <desc>
          <p>
            The data transported for distributed objects
            communications is sent over the network
            encapsulated by NSPortMessage objects, which
            consist of two
            <ref type="class" id="NSPort">NSPort</ref>
              s (sender and receiver, not sent over the network) and
              a body consisting of one or more
              <ref type="class" id="NSData">NSData</ref>
                or
                <ref type="class" id="NSPort">NSPort</ref>
                  objects. (Data in the
                  <ref type="class" id="NSData">NSData</ref>
                    must be in network byte order.)
                  </p>
                  <p>
                    See the
                    <ref type="class" id="NSConnection">NSConnection</ref>
                      and
                      <ref type="class" id="NSPortCoder">NSPortCoder</ref>classes.</p>
        </desc>
        <method type="NSArray*" ovadd="1.0.0">
          <sel>components</sel>
          <desc>
            Returns the message components originally used to
            constitute this message.
          </desc>
        </method>
        <method type="id" ovadd="1.0.0">
          <sel>initWithMachMessage:</sel>
          <arg type="void*">buffer</arg>
          <desc>
            OpenStep compatibility.
          </desc>
        </method>
        <method type="id" init="yes" ovadd="1.0.0">
          <sel>initWithSendPort:</sel>
          <arg type="NSPort*">aPort</arg>
          <sel>receivePort:</sel>
          <arg type="NSPort*">anotherPort</arg>
          <sel>components:</sel>
          <arg type="NSArray*">items</arg>
          <desc>
            Initializes to send message described by
            <var>items</var> (which should contain only
            <ref type="class" id="NSPort">NSPort</ref>
              and/or
              <ref type="class" id="NSData">NSData</ref>
                objects, with contents in network byte order)
                over <var>aPort</var>. If/when a reply to the
                message is sent, it will arrive on
                <var>anotherPort</var>.
          </desc>
        </method>
        <method type="unsigned" ovadd="1.0.0">
          <sel>msgid</sel>
          <desc>
            Returns ID for message. This is not used by the
            distributed objects system, but may be used in
            custom ways by cooperating applications to sort or
            otherwise organize messages. Set to 0 initially.
          </desc>
        </method>
        <method type="NSPort*" ovadd="1.0.0">
          <sel>receivePort</sel>
          <desc>
            For an outgoing message, returns the port on which a
            reply to this message will arrive. For an incoming
            message, returns the port this message arrived on.
          </desc>
        </method>
        <method type="BOOL" ovadd="1.0.0">
          <sel>sendBeforeDate:</sel>
          <arg type="NSDate*">when</arg>
          <desc>
            Request that the message be sent before
            <var>when</var>. Will block until either sends it
            (returns <code>YES</code>) or <var>when</var>
            expires (returns <code>NO</code>). The latter may
            occur if many messages are queued up (by multiple
            threads) faster than they can be sent over the
            network.
          </desc>
        </method>
        <method type="NSPort*" ovadd="1.0.0">
          <sel>sendPort</sel>
          <desc>
            For an outgoing message, returns the port the receiver
            will send itself through. For an incoming message,
            returns the port replies to the receiver should be
            sent through.
          </desc>
        </method>
        <method type="void" ovadd="1.0.0">
          <sel>setMsgid:</sel>
          <arg type="unsigned">anId</arg>
          <desc>
            Sets ID for message. This is not used by the
            distributed objects system, but may be used in
            custom ways by cooperating applications to sort or
            otherwise organize messages.
          </desc>
        </method>
      </class>
    </chapter>
  </body>
</gsdoc>

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