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<img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/inets-5.3.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>inets</strong><br><strong>Reference Manual</strong><br><small>Version 5.3</small></p>
<br><a href="javascript:openAllFlips()">Expand All</a><br><a href="javascript:closeAllFlips()">Contract All</a><p><small><strong>Table of Contents</strong></small></p>
<ul class="flipMenu">
<li id="no" title="inets " expanded="false">inets<ul>
<li><a href="inets.html">
Top of manual page
</a></li>
<li title="services-0"><a href="inets.html#services-0">services/0</a></li>
<li title="services_info-0"><a href="inets.html#services_info-0">services_info/0</a></li>
<li title="service_names-0"><a href="inets.html#service_names-0">service_names/0</a></li>
<li title="start-0"><a href="inets.html#start-0">start/0</a></li>
<li title="start-1"><a href="inets.html#start-1">start/1</a></li>
<li title="stop-0"><a href="inets.html#stop-0">stop/0</a></li>
<li title="start-2"><a href="inets.html#start-2">start/2</a></li>
<li title="start-3"><a href="inets.html#start-3">start/3</a></li>
<li title="stop-2"><a href="inets.html#stop-2">stop/2</a></li>
</ul>
</li>
<li id="no" title="ftp " expanded="false">ftp<ul>
<li><a href="ftp.html">
Top of manual page
</a></li>
<li title="account-2"><a href="ftp.html#account-2">account/2</a></li>
<li title="append-2"><a href="ftp.html#append-2">append/2</a></li>
<li title="append-3"><a href="ftp.html#append-3">append/3</a></li>
<li title="append_bin-3"><a href="ftp.html#append_bin-3">append_bin/3</a></li>
<li title="append_chunk-2"><a href="ftp.html#append_chunk-2">append_chunk/2</a></li>
<li title="append_chunk_start-2"><a href="ftp.html#append_chunk_start-2">append_chunk_start/2</a></li>
<li title="append_chunk_end-1"><a href="ftp.html#append_chunk_end-1">append_chunk_end/1</a></li>
<li title="cd-2"><a href="ftp.html#cd-2">cd/2</a></li>
<li title="close-1"><a href="ftp.html#close-1">close/1</a></li>
<li title="delete-2"><a href="ftp.html#delete-2">delete/2</a></li>
<li title="formaterror-1"><a href="ftp.html#formaterror-1">formaterror/1</a></li>
<li title="lcd-2"><a href="ftp.html#lcd-2">lcd/2</a></li>
<li title="lpwd-1"><a href="ftp.html#lpwd-1">lpwd/1</a></li>
<li title="ls-1"><a href="ftp.html#ls-1">ls/1</a></li>
<li title="ls-2"><a href="ftp.html#ls-2">ls/2</a></li>
<li title="mkdir-2"><a href="ftp.html#mkdir-2">mkdir/2</a></li>
<li title="nlist-1"><a href="ftp.html#nlist-1">nlist/1</a></li>
<li title="nlist-2"><a href="ftp.html#nlist-2">nlist/2</a></li>
<li title="open-1"><a href="ftp.html#open-1">open/1</a></li>
<li title="open-2"><a href="ftp.html#open-2">open/2</a></li>
<li title="pwd-1"><a href="ftp.html#pwd-1">pwd/1</a></li>
<li title="pwd-1"><a href="ftp.html#pwd-1">pwd/1</a></li>
<li title="recv-2"><a href="ftp.html#recv-2">recv/2</a></li>
<li title="recv-3"><a href="ftp.html#recv-3">recv/3</a></li>
<li title="recv_bin-2"><a href="ftp.html#recv_bin-2">recv_bin/2</a></li>
<li title="recv_chunk_start-2"><a href="ftp.html#recv_chunk_start-2">recv_chunk_start/2</a></li>
<li title="recv_chunk-1"><a href="ftp.html#recv_chunk-1">recv_chunk/1</a></li>
<li title="rename-3"><a href="ftp.html#rename-3">rename/3</a></li>
<li title="rmdir-2"><a href="ftp.html#rmdir-2">rmdir/2</a></li>
<li title="send-2"><a href="ftp.html#send-2">send/2</a></li>
<li title="send-3"><a href="ftp.html#send-3">send/3</a></li>
<li title="send_bin-3"><a href="ftp.html#send_bin-3">send_bin/3</a></li>
<li title="send_chunk-2"><a href="ftp.html#send_chunk-2">send_chunk/2</a></li>
<li title="send_chunk_start-2"><a href="ftp.html#send_chunk_start-2">send_chunk_start/2</a></li>
<li title="send_chunk_end-1"><a href="ftp.html#send_chunk_end-1">send_chunk_end/1</a></li>
<li title="type-2"><a href="ftp.html#type-2">type/2</a></li>
<li title="user-3"><a href="ftp.html#user-3">user/3</a></li>
<li title="user-4"><a href="ftp.html#user-4">user/4</a></li>
<li title="quote-2"><a href="ftp.html#quote-2">quote/2</a></li>
</ul>
</li>
<li id="no" title="tftp " expanded="false">tftp<ul>
<li><a href="tftp.html">
Top of manual page
</a></li>
<li title="start-1"><a href="tftp.html#start-1">start/1</a></li>
<li title="read_file-3"><a href="tftp.html#read_file-3">read_file/3</a></li>
<li title="write_file-3"><a href="tftp.html#write_file-3">write_file/3</a></li>
<li title="info-1"><a href="tftp.html#info-1">info/1</a></li>
<li title="info-1"><a href="tftp.html#info-1">info/1</a></li>
<li title="info-1"><a href="tftp.html#info-1">info/1</a></li>
<li title="change_config-2"><a href="tftp.html#change_config-2">change_config/2</a></li>
<li title="change_config-2"><a href="tftp.html#change_config-2">change_config/2</a></li>
<li title="change_config-2"><a href="tftp.html#change_config-2">change_config/2</a></li>
<li title="start-0"><a href="tftp.html#start-0">start/0</a></li>
<li title="prepare-6"><a href="tftp.html#prepare-6">prepare/6</a></li>
<li title="open-6"><a href="tftp.html#open-6">open/6</a></li>
<li title="read-1"><a href="tftp.html#read-1">read/1</a></li>
<li title="write-2"><a href="tftp.html#write-2">write/2</a></li>
<li title="abort-3"><a href="tftp.html#abort-3">abort/3</a></li>
<li title="error_msg-2"><a href="tftp.html#error_msg-2">error_msg/2</a></li>
<li title="warning_msg-2"><a href="tftp.html#warning_msg-2">warning_msg/2</a></li>
<li title="info_msg-2"><a href="tftp.html#info_msg-2">info_msg/2</a></li>
</ul>
</li>
<li id="no" title="httpc " expanded="false">httpc<ul>
<li><a href="httpc.html">
Top of manual page
</a></li>
<li title="request-1"><a href="httpc.html#request-1">request/1</a></li>
<li title="request-2"><a href="httpc.html#request-2">request/2</a></li>
<li title="request-4"><a href="httpc.html#request-4">request/4</a></li>
<li title="request-5"><a href="httpc.html#request-5">request/5</a></li>
<li title="cancel_request-1"><a href="httpc.html#cancel_request-1">cancel_request/1</a></li>
<li title="cancel_request-2"><a href="httpc.html#cancel_request-2">cancel_request/2</a></li>
<li title="set_options-1"><a href="httpc.html#set_options-1">set_options/1</a></li>
<li title="set_options-2"><a href="httpc.html#set_options-2">set_options/2</a></li>
<li title="stream_next-1"><a href="httpc.html#stream_next-1">stream_next/1</a></li>
<li title="store_cookie-2"><a href="httpc.html#store_cookie-2">store_cookie/2</a></li>
<li title="store_cookie-3"><a href="httpc.html#store_cookie-3">store_cookie/3</a></li>
<li title="cookie_header-1"><a href="httpc.html#cookie_header-1">cookie_header/1</a></li>
<li title="cookie_header-2"><a href="httpc.html#cookie_header-2">cookie_header/2</a></li>
<li title="reset_cookies-0"><a href="httpc.html#reset_cookies-0">reset_cookies/0</a></li>
<li title="reset_cookies-1"><a href="httpc.html#reset_cookies-1">reset_cookies/1</a></li>
<li title="which_cookies-0"><a href="httpc.html#which_cookies-0">which_cookies/0</a></li>
<li title="which_cookies-1"><a href="httpc.html#which_cookies-1">which_cookies/1</a></li>
</ul>
</li>
<li id="no" title="httpd " expanded="false">httpd<ul>
<li><a href="httpd.html">
Top of manual page
</a></li>
<li title="info-1"><a href="httpd.html#info-1">info/1</a></li>
<li title="info-2"><a href="httpd.html#info-2">info/2</a></li>
<li title="info-2"><a href="httpd.html#info-2">info/2</a></li>
<li title="info-3"><a href="httpd.html#info-3">info/3</a></li>
<li title="reload_config-2"><a href="httpd.html#reload_config-2">reload_config/2</a></li>
<li title="Module:do-1"><a href="httpd.html#Module:do-1">Module:do/1</a></li>
<li title="Module:load-2"><a href="httpd.html#Module:load-2">Module:load/2</a></li>
<li title="Module:store-2"><a href="httpd.html#Module:store-2">Module:store/2</a></li>
<li title="Module:remove-1"><a href="httpd.html#Module:remove-1">Module:remove/1</a></li>
<li title="parse_query-1"><a href="httpd.html#parse_query-1">parse_query/1</a></li>
</ul>
</li>
<li id="no" title="httpd_conf " expanded="false">httpd_conf<ul>
<li><a href="httpd_conf.html">
Top of manual page
</a></li>
<li title="check_enum-2"><a href="httpd_conf.html#check_enum-2">check_enum/2</a></li>
<li title="clean-1"><a href="httpd_conf.html#clean-1">clean/1</a></li>
<li title="custom_clean-3"><a href="httpd_conf.html#custom_clean-3">custom_clean/3</a></li>
<li title="is_directory-1"><a href="httpd_conf.html#is_directory-1">is_directory/1</a></li>
<li title="is_file-1"><a href="httpd_conf.html#is_file-1">is_file/1</a></li>
<li title="make_integer-1"><a href="httpd_conf.html#make_integer-1">make_integer/1</a></li>
</ul>
</li>
<li id="no" title="httpd_socket " expanded="false">httpd_socket<ul>
<li><a href="httpd_socket.html">
Top of manual page
</a></li>
<li title="deliver-3"><a href="httpd_socket.html#deliver-3">deliver/3</a></li>
<li title="peername-2"><a href="httpd_socket.html#peername-2">peername/2</a></li>
<li title="resolve-0"><a href="httpd_socket.html#resolve-0">resolve/0</a></li>
</ul>
</li>
<li id="no" title="httpd_util " expanded="false">httpd_util<ul>
<li><a href="httpd_util.html">
Top of manual page
</a></li>
<li title="convert_request_date-1"><a href="httpd_util.html#convert_request_date-1">convert_request_date/1</a></li>
<li title="create_etag-1"><a href="httpd_util.html#create_etag-1">create_etag/1</a></li>
<li title="decode_hex-1"><a href="httpd_util.html#decode_hex-1">decode_hex/1</a></li>
<li title="day-1"><a href="httpd_util.html#day-1">day/1</a></li>
<li title="flatlength-1"><a href="httpd_util.html#flatlength-1">flatlength/1</a></li>
<li title="hexlist_to_integer-1"><a href="httpd_util.html#hexlist_to_integer-1">hexlist_to_integer/1</a></li>
<li title="integer_to_hexlist-1"><a href="httpd_util.html#integer_to_hexlist-1">integer_to_hexlist/1</a></li>
<li title="lookup-2"><a href="httpd_util.html#lookup-2">lookup/2</a></li>
<li title="lookup-3"><a href="httpd_util.html#lookup-3">lookup/3</a></li>
<li title="lookup_mime-2"><a href="httpd_util.html#lookup_mime-2">lookup_mime/2</a></li>
<li title="lookup_mime-3"><a href="httpd_util.html#lookup_mime-3">lookup_mime/3</a></li>
<li title="lookup_mime_default-2"><a href="httpd_util.html#lookup_mime_default-2">lookup_mime_default/2</a></li>
<li title="lookup_mime_default-3"><a href="httpd_util.html#lookup_mime_default-3">lookup_mime_default/3</a></li>
<li title="message-3"><a href="httpd_util.html#message-3">message/3</a></li>
<li title="month-1"><a href="httpd_util.html#month-1">month/1</a></li>
<li title="multi_lookup-2"><a href="httpd_util.html#multi_lookup-2">multi_lookup/2</a></li>
<li title="reason_phrase-1"><a href="httpd_util.html#reason_phrase-1">reason_phrase/1</a></li>
<li title="rfc1123_date-0"><a href="httpd_util.html#rfc1123_date-0">rfc1123_date/0</a></li>
<li title="rfc1123_date-2"><a href="httpd_util.html#rfc1123_date-2">rfc1123_date/2</a></li>
<li title="split-3"><a href="httpd_util.html#split-3">split/3</a></li>
<li title="split_script_path-1"><a href="httpd_util.html#split_script_path-1">split_script_path/1</a></li>
<li title="split_path-1"><a href="httpd_util.html#split_path-1">split_path/1</a></li>
<li title="strip-1"><a href="httpd_util.html#strip-1">strip/1</a></li>
<li title="suffix-1"><a href="httpd_util.html#suffix-1">suffix/1</a></li>
</ul>
</li>
<li id="no" title="mod_alias " expanded="false">mod_alias<ul>
<li><a href="mod_alias.html">
Top of manual page
</a></li>
<li title="default_index-2"><a href="mod_alias.html#default_index-2">default_index/2</a></li>
<li title="path-3"><a href="mod_alias.html#path-3">path/3</a></li>
<li title="real_name-3"><a href="mod_alias.html#real_name-3">real_name/3</a></li>
<li title="real_script_name-3"><a href="mod_alias.html#real_script_name-3">real_script_name/3</a></li>
</ul>
</li>
<li id="no" title="mod_auth " expanded="false">mod_auth<ul>
<li><a href="mod_auth.html">
Top of manual page
</a></li>
<li title="add_user-2"><a href="mod_auth.html#add_user-2">add_user/2</a></li>
<li title="add_user-5"><a href="mod_auth.html#add_user-5">add_user/5</a></li>
<li title="add_user-6"><a href="mod_auth.html#add_user-6">add_user/6</a></li>
<li title="delete_user-2"><a href="mod_auth.html#delete_user-2">delete_user/2</a></li>
<li title="delete_user-3"><a href="mod_auth.html#delete_user-3">delete_user/3</a></li>
<li title="delete_user-4"><a href="mod_auth.html#delete_user-4">delete_user/4</a></li>
<li title="get_user-2"><a href="mod_auth.html#get_user-2">get_user/2</a></li>
<li title="get_user-3"><a href="mod_auth.html#get_user-3">get_user/3</a></li>
<li title="get_user-4"><a href="mod_auth.html#get_user-4">get_user/4</a></li>
<li title="list_users-1"><a href="mod_auth.html#list_users-1">list_users/1</a></li>
<li title="list_users-3"><a href="mod_auth.html#list_users-3">list_users/3</a></li>
<li title="add_group_member-3"><a href="mod_auth.html#add_group_member-3">add_group_member/3</a></li>
<li title="add_group_member-4"><a href="mod_auth.html#add_group_member-4">add_group_member/4</a></li>
<li title="add_group_member-5"><a href="mod_auth.html#add_group_member-5">add_group_member/5</a></li>
<li title="delete_group_member-3"><a href="mod_auth.html#delete_group_member-3">delete_group_member/3</a></li>
<li title="delete_group_member-4"><a href="mod_auth.html#delete_group_member-4">delete_group_member/4</a></li>
<li title="delete_group_member-5"><a href="mod_auth.html#delete_group_member-5">delete_group_member/5</a></li>
<li title="list_group_members-2"><a href="mod_auth.html#list_group_members-2">list_group_members/2</a></li>
<li title="list_group_members-3"><a href="mod_auth.html#list_group_members-3">list_group_members/3</a></li>
<li title="list_group_members-4"><a href="mod_auth.html#list_group_members-4">list_group_members/4</a></li>
<li title="list_groups-1"><a href="mod_auth.html#list_groups-1">list_groups/1</a></li>
<li title="list_groups-2"><a href="mod_auth.html#list_groups-2">list_groups/2</a></li>
<li title="list_groups-3"><a href="mod_auth.html#list_groups-3">list_groups/3</a></li>
<li title="delete_group-2"><a href="mod_auth.html#delete_group-2">delete_group/2</a></li>
<li title="delete_group-4"><a href="mod_auth.html#delete_group-4">delete_group/4</a></li>
<li title="update_password-5"><a href="mod_auth.html#update_password-5">update_password/5</a></li>
<li title="update_password-6"><a href="mod_auth.html#update_password-6">update_password/6</a></li>
</ul>
</li>
<li id="loadscrollpos" title="mod_esi " expanded="true">mod_esi<ul>
<li><a href="mod_esi.html">
Top of manual page
</a></li>
<li title="deliver-2"><a href="mod_esi.html#deliver-2">deliver/2</a></li>
<li title="Module:Function-3"><a href="mod_esi.html#Module:Function-3">Module:Function/3</a></li>
<li title="Module:Function-2"><a href="mod_esi.html#Module:Function-2">Module:Function/2</a></li>
</ul>
</li>
<li id="no" title="mod_security " expanded="false">mod_security<ul>
<li><a href="mod_security.html">
Top of manual page
</a></li>
<li title="list_auth_users-1"><a href="mod_security.html#list_auth_users-1">list_auth_users/1</a></li>
<li title="list_auth_users-2"><a href="mod_security.html#list_auth_users-2">list_auth_users/2</a></li>
<li title="list_auth_users-2"><a href="mod_security.html#list_auth_users-2">list_auth_users/2</a></li>
<li title="list_auth_users-3"><a href="mod_security.html#list_auth_users-3">list_auth_users/3</a></li>
<li title="list_blocked_users-1"><a href="mod_security.html#list_blocked_users-1">list_blocked_users/1</a></li>
<li title="list_blocked_users-2"><a href="mod_security.html#list_blocked_users-2">list_blocked_users/2</a></li>
<li title="list_blocked_users-2"><a href="mod_security.html#list_blocked_users-2">list_blocked_users/2</a></li>
<li title="list_blocked_users-3"><a href="mod_security.html#list_blocked_users-3">list_blocked_users/3</a></li>
<li title="block_user-4"><a href="mod_security.html#block_user-4">block_user/4</a></li>
<li title="block_user-5"><a href="mod_security.html#block_user-5">block_user/5</a></li>
<li title="unblock_user-2"><a href="mod_security.html#unblock_user-2">unblock_user/2</a></li>
<li title="unblock_user-3"><a href="mod_security.html#unblock_user-3">unblock_user/3</a></li>
<li title="unblock_user-3"><a href="mod_security.html#unblock_user-3">unblock_user/3</a></li>
<li title="unblock_user-4"><a href="mod_security.html#unblock_user-4">unblock_user/4</a></li>
<li title="event-4"><a href="mod_security.html#event-4">event/4</a></li>
<li title="event-5"><a href="mod_security.html#event-5">event/5</a></li>
</ul>
</li>
</ul>
</div></div>
<div id="content">
<div class="innertube">
<!-- refpage --><center><h1>mod_esi</h1></center>
<h3>MODULE</h3>
<div class="REFBODY">mod_esi</div>
<h3>MODULE SUMMARY</h3>
<div class="REFBODY">Erlang Server Interface </div>
<h3>DESCRIPTION</h3>
<div class="REFBODY"><p>
<p>This module defines the API - Erlang Server Interface (ESI).
Which is a more efficient way of writing erlang scripts
for your Inets web server than writing them as common CGI scripts.</p>
</p></div>
<h3>EXPORTS</h3>
<p><a name="deliver-2"><span class="bold_code">deliver(SessionID, Data) -> ok | {error, Reason}</span></a><br></p>
<div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES">
<span class="bold_code">SessionID = term()</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Data = string() | io_list()</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Reason = term()</span><br>
</div>
</div>
<div class="REFBODY"><p>
<a name="deliver"></a>
<p>This function is <strong>only</strong> intended to be used from
functions called by the Erl Scheme interface to deliver
parts of the content to the user.</p>
<p>Sends data from a Erl Scheme script back to the client.</p>
<div class="note">
<div class="label">Note</div>
<div class="content"><p><p>Note
that if any HTTP-header fields should be added by the
script they must be in the first call to deliver/2 and the
data in the call must be a string. Do not
assume anything about the data type of SessionID, the
SessionID must be the value given as input to the esi
call back function that you implemented.</p></p></div>
</div>
</p></div>
<h3><a name="id2283616">ESI Callback Functions</a></h3>
<div class="REFBODY">
</div>
<h3>EXPORTS</h3>
<p><a name="Module:Function-3"><span class="bold_code">Module:Function(SessionID, Env, Input)-> _ </span></a><br></p>
<div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES">
<span class="bold_code">SessionID = term()</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Env = [EnvironmentDirectives] ++ ParsedHeader</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">EnvironmentDirectives = {Key,Value}</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Key = query_string | content_length | server_software | gateway_interface | server_protocol | server_port | request_method | remote_addr | script_name. <v>Input = string()</span><br>
</div>
</div>
<div class="REFBODY"><p>
<p>The <span class="code">Module</span> must be found in the code path and export
<span class="code">Function</span> with an arity of two. An erlScriptAlias must
also be set up in the configuration file for the Web server.</p>
<p>If the HTTP request is a post request and a body is sent
then content_length will be the length of the posted
data. If get is used query_string will be the data after
<strong>?</strong> in the url.</p>
<p>ParsedHeader is the HTTP request as a key value tuple
list. The keys in parsed header will be the in lower case.</p>
<p>SessionID is a identifier
the server use when <span class="code">deliver/2</span> is called, do not
assume any-thing about the datatype.</p>
<p>Use this callback function to dynamically generate dynamic web
content. when a part of the page is generated send the
data back to the client through <span class="code">deliver/2</span>. Note
that the first chunk of data sent to the client must at
least contain all HTTP header fields that the response
will generate. If the first chunk not contains
<strong>End of HTTP header</strong> that is <span class="code">"\r\n\r\n"</span>
the server will
assume that no HTTP header fields will be generated.</p>
</p></div>
<p><a name="Module:Function-2"><span class="bold_code">Module:Function(Env, Input)-> Response </span></a><br></p>
<div class="REFBODY">
<p>Types:</p>
<div class="REFTYPES">
<span class="bold_code">Env = [EnvironmentDirectives] ++ ParsedHeader</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">EnvironmentDirectives = {Key,Value}</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Key = query_string | content_length | server_software | gateway_interface | server_protocol | server_port | request_method | remote_addr | script_name. <v>Input = string()</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Response = string()</span><br>
</div>
</div>
<div class="REFBODY"><p>
<p>This callback format consumes quite much memory since the
whole response must be generated before it is sent to the
user. This functions is deprecated and only keept for backwards
compatibility.
For new development Module:Function/3 should be used.</p>
</p></div>
</div>
<div class="footer">
<hr>
<p>Copyright © 1997-2010 Ericsson AB. All Rights Reserved.</p>
</div>
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