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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-6.2.2.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>inets</strong><br><strong>Reference Manual</strong><br><small>Version 6.2.2</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="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-0"><a href="inets.html#stop-0">stop/0</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="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="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="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="read_file-3"><a href="tftp.html#read_file-3">read_file/3</a></li>
<li title="start-1"><a href="tftp.html#start-1">start/1</a></li>
<li title="write_file-3"><a href="tftp.html#write_file-3">write_file/3</a></li>
<li title="Module:abort-3"><a href="tftp.html#Module:abort-3">Module:abort/3</a></li>
<li title="Module:open-6"><a href="tftp.html#Module:open-6">Module:open/6</a></li>
<li title="Module:prepare-6"><a href="tftp.html#Module:prepare-6">Module:prepare/6</a></li>
<li title="Module:read-1"><a href="tftp.html#Module:read-1">Module:read/1</a></li>
<li title="Module:write-2"><a href="tftp.html#Module:write-2">Module:write/2</a></li>
<li title="Logger:error_msg-2"><a href="tftp.html#Logger:error_msg-2">Logger:error_msg/2</a></li>
<li title="Logger:info_msg-2"><a href="tftp.html#Logger:info_msg-2">Logger:info_msg/2</a></li>
<li title="Logger:warning_msg-2"><a href="tftp.html#Logger:warning_msg-2">Logger:warning_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="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="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="cookie_header-3"><a href="httpc.html#cookie_header-3">cookie_header/3</a></li>
<li title="get_options-1"><a href="httpc.html#get_options-1">get_options/1</a></li>
<li title="get_options-2"><a href="httpc.html#get_options-2">get_options/2</a></li>
<li title="info-0"><a href="httpc.html#info-0">info/0</a></li>
<li title="info-1"><a href="httpc.html#info-1">info/1</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="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="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="store_cookies-2"><a href="httpc.html#store_cookies-2">store_cookies/2</a></li>
<li title="store_cookies-3"><a href="httpc.html#store_cookies-3">store_cookies/3</a></li>
<li title="stream_next-1"><a href="httpc.html#stream_next-1">stream_next/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>
<li title="which_sessions-0"><a href="httpc.html#which_sessions-0">which_sessions/0</a></li>
<li title="which_sessions-1"><a href="httpc.html#which_sessions-1">which_sessions/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="info-4"><a href="httpd.html#info-4">info/4</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:remove-1"><a href="httpd.html#Module:remove-1">Module:remove/1</a></li>
<li title="Module:store-2"><a href="httpd.html#Module:store-2">Module:store/2</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_custom_api " expanded="false">httpd_custom_api<ul>
<li><a href="httpd_custom_api.html">
Top of manual page
</a></li>
<li title="response_default_headers-0"><a href="httpd_custom_api.html#response_default_headers-0">response_default_headers/0</a></li>
<li title="response_header-1"><a href="httpd_custom_api.html#response_header-1">response_header/1</a></li>
<li title="request_header-1"><a href="httpd_custom_api.html#request_header-1">request_header/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="day-1"><a href="httpd_util.html#day-1">day/1</a></li>
<li title="decode_hex-1"><a href="httpd_util.html#decode_hex-1">decode_hex/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_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="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_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="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="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_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="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_users-1"><a href="mod_auth.html#list_users-1">list_users/1</a></li>
<li title="list_users-2"><a href="mod_auth.html#list_users-2">list_users/2</a></li>
<li title="list_users-3"><a href="mod_auth.html#list_users-3">list_users/3</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="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="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="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="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="Module:event-4"><a href="mod_security.html#Module:event-4">Module:event/4</a></li>
<li title="Module:event-5"><a href="mod_security.html#Module:event-5">Module:event/5</a></li>
</ul>
</li>
<li id="no" title="http_uri " expanded="false">http_uri<ul>
<li><a href="http_uri.html">
Top of manual page
</a></li>
<li title="decode-1"><a href="http_uri.html#decode-1">decode/1</a></li>
<li title="encode-1"><a href="http_uri.html#encode-1">encode/1</a></li>
<li title="parse-1"><a href="http_uri.html#parse-1">parse/1</a></li>
<li title="parse-2"><a href="http_uri.html#parse-2">parse/2</a></li>
<li title="scheme_defaults-0"><a href="http_uri.html#scheme_defaults-0">scheme_defaults/0</a></li>
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<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 Erlang Server Interface (ESI) API.
It is a more efficient way of writing Erlang scripts
for your <span class="code">Inets</span> web server than writing them as common CGI scripts.</p>
<a name="deliver"></a>
</p></div>
<h3><a name="idp296183660">DATA TYPES</a></h3>
<div class="REFBODY">
<p>The following data types are used in the functions for mod_esi:</p>
<dl>
<dt><strong><span class="code">env() = </span></strong></dt>
<dd> <p><span class="code">{EnvKey()::atom(), Value::term()}</span></p>
</dd>
<p>Currently supported key value pairs</p>
<dl>
<dt><strong><span class="code">{server_software, string()}</span></strong></dt>
<dd><p>Indicates the inets version.</p></dd>
<dt><strong><span class="code">{server_name, string()}</span></strong></dt>
<dd><p>The local hostname. </p></dd>
<dt><strong><span class="code">{gateway_interface, string()}</span></strong></dt>
<dd>
<p>Legacy string used in CGI, just ignore.</p> </dd>
<dt><strong><span class="code">{server_protocol, string()}</span></strong></dt>
<dd><p> HTTP version, currently "HTTP/1.1"</p></dd>
<dt><strong>{server_port, integer()}</strong></dt>
<dd><p>Servers port number.</p></dd>
<dt><strong><span class="code">{request_method, "GET | "PUT" | "DELETE | "POST" | "PATCH"}</span></strong></dt>
<dt><strong><span class="code">{remote_adress, inet:ip_address()} </span></strong></dt>
<dd><p>The clients ip address.</p></dd>
<dt><strong><span class="code">{peer_cert, undefined | no_peercert | DER:binary()</span></strong></dt>
<dd>
<p>For TLS connections where client certificates are used this will
be an ASN.1 DER-encoded X509-certificate as an Erlang binary.
If client certificates are not used the value will be <span class="code">no_peercert</span>,
and if TLS is not used (HTTP or connection is lost due to network failure)
the value will be <span class="code">undefined</span>.
</p>
</dd>
<dt><strong><span class="code">{script_name, string()}</span></strong></dt>
<dd><p>Request URI</p></dd>
<dt><strong><span class="code">{http_LowerCaseHTTPHeaderName, string()}</span></strong></dt>
<dd><p>example: {http_content_type, "text/html"}</p></dd>
</dl>
</dl>
<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() | binary()</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 an Erl Scheme script back to the client.</p>
<div class="note">
<div class="label">Note</div>
<div class="content"><p>
<p>If any HTTP header fields are added by the
script, they must be in the first call to <span class="code">deliver/2</span>,
and the data in the call must be a string. Calls after the headers
are complete can contain binary data to reduce copying
overhead. Do not assume anything about the data type of
<span class="code">SessionID</span>. <span class="code">SessionID</span> must be the value given
as input to the ESI callback function that you implemented.</p>
</p></div>
</div>
</p></div>
</div>
<h3><a name="idp296197540">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 = env()</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">Input = string()</span><br>
</div>
</div>
<div class="REFBODY"><p>
<p><span class="code">Module</span> must be found in the code path and export
<span class="code">Function</span> with an arity of three. An <span class="code">erlScriptAlias</span> 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,
<span class="code">content_length</span> is the length of the posted
data. If 'get' is used, <span class="code">query_string</span> is the data after
<strong>?</strong> in the URL.</p>
<p><span class="code">ParsedHeader</span> is the HTTP request as a key-value tuple
list. The keys in <span class="code">ParsedHeader</span> are in lower case.</p>
<p><span class="code">SessionID</span> is an identifier
the server uses when <span class="code">deliver/2</span> is called. Do not
assume anything about the datatype.</p>
<p>Use this callback function to generate dynamic web
content dynamically. When a part of the page is generated, send the
data back to the client through <span class="code">deliver/2</span>. Notice
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 does not contain the
<strong>end of HTTP header</strong>, that is, <span class="code">"\r\n\r\n",</span>
the server assumes 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 = env()</span><br>
</div>
<div class="REFTYPES">
<span class="bold_code">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 much memory, as the
whole response must be generated before it is sent to the
user. This function is deprecated and is only kept for backwards
compatibility.
For new development, use <span class="code">Module:Function/3</span>.</p>
</p></div>
</div>
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<hr>
<p>Copyright © 1997-2018 Ericsson AB. All Rights Reserved.</p>
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