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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE erlref SYSTEM "erlref.dtd">

<erlref>
  <header>
    <copyright>
      <year>1997</year><year>2013</year>
      <holder>Ericsson AB. All Rights Reserved.</holder>
    </copyright>
    <legalnotice>
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0

      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.
    
    </legalnotice>

    <title>httpd_socket</title>
    <prepared>Joakim Greben&ouml;</prepared>
    <docno></docno>
    <date>1997-10-14</date>
    <rev>2.2</rev>
    <file>httpd_socket.sgml</file>
  </header>
  <module>httpd_socket</module>
  <modulesummary>Communication utility functions to be used by the Erlang
    Web server API programmer.</modulesummary>
  <description>
    <p>This module provides the Erlang Web server API module programmer
    with utility functions for generic sockets communication. The
    appropriate communication mechanism is transparently used, that
    is <c>ip_comm</c> or <c>ssl</c>.</p>
    
    <marker id="deliver"></marker>
  </description>

  <funcs>
    <func>
      <name>deliver(SocketType, Socket, Data) -> Result</name>
      <fsummary>Send binary data over socket.</fsummary>
      <type>
        <v>SocketType = socket_type()</v>
        <v>Socket = socket()</v>
        <v>Data = io_list() | binary()</v>
        <v>Result = socket_closed | void()</v>
      </type>
      <desc>
        <marker id="deliver"></marker>
        <p><c>deliver/3</c> sends the <c>Binary</c> over the
	<c>Socket</c> using the specified <c>SocketType</c>. Socket
	and SocketType should be the socket and the socket_type form
	the mod record as defined in httpd.hrl</p>
    
	<marker id="peername"></marker>
      </desc>
    </func>

    <func>
      <name>peername(SocketType,Socket) -> {Port,IPAddress}</name>
      <fsummary>Return the port and IP-address of the remote socket.</fsummary>
      <type>
        <v>SocketType = socket_type()</v>
        <v>Socket = socket()</v>
        <v>Port = integer()</v>
        <v>IPAddress = string()</v>
      </type>
      <desc>
        <marker id="peername"></marker>
        <p><c>peername/3</c> returns the <c>Port</c> and
	<c>IPAddress</c> of the remote <c>Socket</c>. </p>
    
	<marker id="resolve"></marker>
      </desc>
    </func>

    <func>
      <name>resolve() -> HostName</name>
      <fsummary>Return the official name of the current host.</fsummary>
      <type>
        <v>HostName = string()</v>
      </type>
      <desc>
        <marker id="resolve"></marker>
        <p><c>resolve/0</c> returns the official <c>HostName</c> of
	the current host. </p>
      </desc>
    </func>
  </funcs>

  <section>
    <marker id="see_also"></marker>
    <title>SEE ALSO</title>
    <p><seealso marker="httpd">httpd(3)</seealso></p>
  </section>
  
</erlref>