<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html xmlns:fn="http://www.w3.org/2005/02/xpath-functions"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <link rel="stylesheet" href="../../../../doc/otp_doc.css" type="text/css"> <title>Erlang -- httpc</title> </head> <body bgcolor="white" text="#000000" link="#0000ff" vlink="#ff00ff" alink="#ff0000"><div id="container"> <script id="js" type="text/javascript" language="JavaScript" src="../../../../doc/js/flipmenu/flipmenu.js"></script><script id="js2" type="text/javascript" src="../../../../doc/js/erlresolvelinks.js"></script><script language="JavaScript" type="text/javascript"> <!-- function getWinHeight() { var myHeight = 0; if( typeof( window.innerHeight ) == 'number' ) { //Non-IE myHeight = window.innerHeight; } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) { //IE 6+ in 'standards compliant mode' myHeight = 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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="loadscrollpos" title="httpc " expanded="true">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="no" title="mod_esi " expanded="false">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>httpc</h1></center> <h3>MODULE</h3> <div class="REFBODY">httpc</div> <h3>MODULE SUMMARY</h3> <div class="REFBODY">An HTTP/1.1 client </div> <h3>DESCRIPTION</h3> <div class="REFBODY"><p> <p>This module provides the API to a HTTP/1.1 compatible client according to RFC 2616, caching is currently not supported.</p> <div class="note"> <div class="label">Note</div> <div class="content"><p> <p>When starting the Inets application a manager process for the default profile will be started. The functions in this API that does not explicitly use a profile will accesses the default profile. A profile keeps track of proxy options, cookies and other options that can be applied to more than one request. </p> <p>If the scheme https is used the ssl application needs to be started.</p> <p>Also note that pipelining will only be used if the pipeline timeout is set, otherwise persistent connections without pipelining will be used e.i. the client always waits for the previous response before sending the next request.</p> </p></div> </div> <p>There are some usage examples in the <span class="bold_code"><a href="http_client.html">Inets User's Guide.</a></span></p> </p></div> <h3><a name="id2276138">COMMON DATA TYPES </a></h3> <div class="REFBODY"> <p>Type definitions that are used more than once in this module:</p> <div class="example"><pre> boolean() = true | false string() = list of ASCII characters request_id() = ref() profile() = atom() path() = string() representing a file path or directory path ip_address() = See inet(3) socket_opt() = See the Options used by gen_tcp(3) and ssl(3) connect(s) </pre></div> </div> <h3><a name="id2276161">HTTP DATA TYPES </a></h3> <div class="REFBODY"> <p>Type definitions that are related to HTTP:</p> <p>For more information about HTTP see rfc 2616</p> <div class="example"><pre> method() = head | get | put | post | trace | options | delete request() = {url(), headers()} | {url(), headers(), content_type(), body()} url() = string() - Syntax according to the URI definition in rfc 2396, ex: "http://www.erlang.org" status_line() = {http_version(), status_code(), reason_phrase()} http_version() = string() ex: "HTTP/1.1" status_code() = integer() reason_phrase() = string() content_type() = string() headers() = [header()] header() = {field(), value()} field() = string() value() = string() body() = string() | binary() filename() = string() </pre></div> </div> <h3><a name="id2276194">SSL DATA TYPES </a></h3> <div class="REFBODY"> <p>Some type definitions relevant when using https, for details <span class="bold_code"><a href="javascript:erlhref('../../../../doc/../','ssl','ssl.html');">ssl(3)</a></span>: </p> <div class="example"><pre> ssl_options() = {verify, code()} | {depth, depth()} | {certfile, path()} | {keyfile, path()} | {password, string()} | {cacertfile, path()} | {ciphers, string()} </pre></div> </div> <h3><a name="id2276223">HTTP CLIENT SERVICE START/STOP </a></h3> <div class="REFBODY"> <p>A HTTP client can be configured to start when starting the inets application or started dynamically in runtime by calling the inets application API <span class="code">inets:start(httpc, ServiceConfig)</span>, or <span class="code">inets:start(httpc, ServiceConfig, How)</span> see <span class="bold_code"><a href="inets.html">inets(3)</a></span> Below follows a description of the available configuration options.</p> <dl> <dt><strong>{profile, profile()}</strong></dt> <dd>Name of the profile, see common data types below, this option is mandatory.</dd> <dt><strong>{data_dir, path()}</strong></dt> <dd>Directory where the profile may save persistent data, if omitted all cookies will be treated as session cookies.</dd> </dl> <p>The client can be stopped using inets:stop(httpc, Pid) or inets:stop(httpc, Profile).</p> <a name="request1"></a> </div> <h3>EXPORTS</h3> <p><a name="request-1"><span class="bold_code">request(Url) -> </span></a><br><a name="request-2"><span class="bold_code">request(Url, Profile) -> {ok, Result} | {error, Reason}</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Url = url() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Result = {status_line(), headers(), body()} | {status_code(), body()} | request_id() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Reason = term() </span><br> </div> </div> <div class="REFBODY"><p> <p>Equivalent to httpc:request(get, {Url, []}, [], []).</p> <a name="request2"></a> </p></div> <p><a name="request-4"><span class="bold_code">request(Method, Request, HTTPOptions, Options) -> </span></a><br><a name="request-5"><span class="bold_code">request(Method, Request, HTTPOptions, Options, Profile) -> {ok, Result} | {ok, saved_to_file} | {error, Reason}</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Method = method() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Request = request()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">HTTPOptions = http_options()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">http_options() = [http_option()]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">http_option() = {timeout, timeout()} | {connect_timeout, timeout()} | {ssl, ssl_options()} | {autoredirect, boolean()} | {proxy_auth, {userstring(), passwordstring()}} | {version, http_version()} | {relaxed, boolean()}</span><br> </div> <div class="REFTYPES"> <span class="bold_code">timeout() = integer() >= 0 | infinity</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Options = options()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">options() = [option()]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">option() = {sync, boolean()} | {stream, stream_to()} | {body_format, body_format()} | {full_result, boolean()} | {headers_as_is, boolean() | {socket_opts, socket_opts()} | {receiver, receiver()}}</span><br> </div> <div class="REFTYPES"> <span class="bold_code">stream_to() = none | self | {self, once} | filename() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">socket_opts() = [socket_opt()]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">receiver() = pid() | function()/1 | {Module, Function, Args} </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Module = atom() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Function = atom() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Args = list() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">body_format() = string | binary </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Result = {status_line(), headers(), body()} | {status_code(), body()} | request_id() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Profile = profile() </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Reason = term() </span><br> </div> </div> <div class="REFBODY"><p> <p>Sends a HTTP-request. The function can be both synchronous and asynchronous. In the later case the function will return {ok, RequestId} and later on the information will be delivered to the <span class="code">receiver</span> depending on that value. </p> <p>Http option (<span class="code">http_option()</span>) details: </p> <dl> <dt><strong><span class="code">timeout</span></strong></dt> <dd> <p>Timeout time for the request. </p> <p>The clock start ticking as soon as the request has been sent. </p> <p>Time is in milliseconds. </p> <p>Defaults to <span class="code">infinity</span>. </p> </dd> <dt><strong><span class="code">connect_timeout</span></strong></dt> <dd> <p>Connection timeout time, used during the initial request, when the client is <strong>connecting</strong> to the server. </p> <p>Time is in milliseconds. </p> <p>Defaults to the value of the <span class="code">timeout</span> option. </p> </dd> <dt><strong><span class="code">ssl</span></strong></dt> <dd> <p>If using SSL, these SSL-specific options are used. </p> <p>Defaults to <span class="code">[]</span>. </p> </dd> <dt><strong><span class="code">autoredirect</span></strong></dt> <dd> <p>Should the client automatically retreive the information from the new URI and return that as the result instead of a 30X-result code. </p> <p>Note that for some 30X-result codes automatic redirect is not allowed in these cases the 30X-result will always be returned. </p> <p>Defaults to <span class="code">true</span>. </p> </dd> <dt><strong><span class="code">proxy_auth</span></strong></dt> <dd> <p>A proxy-authorization header using the provided user name and password will be added to the request. </p> </dd> <dt><strong><span class="code">version</span></strong></dt> <dd> <p>Can be used to make the client act as an <span class="code">HTTP/1.0</span> or <span class="code">HTTP/0.9</span> client. By default this is an <span class="code">HTTP/1.1</span> client. When using <span class="code">HTTP/1.0</span> persistent connections will not be used. </p> <p>Defaults to the trsing <span class="code">"HTTP/1.1"</span>. </p> </dd> <dt><strong><span class="code">relaxed</span></strong></dt> <dd> <p>If set to true workarounds for known server deviations from the HTTP-standard are enabled. </p> <p>Defaults to <span class="code">false</span>. </p> </dd> </dl> <p>Option (<span class="code">option()</span>) details: </p> <dl> <dt><strong><span class="code">sync</span></strong></dt> <dd> <p>Shall the request be synchronous or asynchronous. </p> <p>Defaults to <span class="code">true</span>. </p> </dd> <dt><strong><span class="code">stream</span></strong></dt> <dd> <p>Streams the body of a 200 or 206 response to the calling process or to a file. When streaming to the calling process using the option <span class="code">self</span> the the following stream messages will be sent to that process: {http, {RequestId, stream_start, Headers}, {http, {RequestId, stream, BinBodyPart}, {http, {RequestId, stream_end, Headers}. When streaming to to the calling processes using the option <span class="code">{self, once}</span> the first message will have an additional element e.i. {http, {RequestId, stream_start, Headers, Pid}, this is the process id that should be used as an argument to http:stream_next/1 to trigger the next message to be sent to the calling process. </p> <p>Note that it is possible that chunked encoding will add headers so that there are more headers in the stream_end message than in the stream_start. When streaming to a file and the request is asynchronous the message {http, {RequestId, saved_to_file}} will be sent. </p> <p>Defaults to <span class="code">none</span>. </p> </dd> <dt><strong><span class="code">body_format</span></strong></dt> <dd> <p>Defines if the body shall be delivered as a string or as a binary. This option is only valid for the synchronous request. </p> <p>Defaults to <span class="code">string</span>. </p> </dd> <dt><strong><span class="code">full_result</span></strong></dt> <dd> <p>Should a "full result" be returned to the caller (that is, the body, the headers and the entire status-line) or not (the body and the status code). </p> <p>Defaults to <span class="code">true</span>. </p> </dd> <dt><strong><span class="code">header_as_is</span></strong></dt> <dd> <p>Shall the headers provided by the user be made lower case or be regarded as case sensitive. </p> <p>Note that the http standard requires them to be case insenstive. This feature should only be used if there is no other way to communicate with the server or for testing purpose. Also note that when this option is used no headers will be automatically added, all necessary headers has to be provided by the user. </p> <p>Defaults to <span class="code">false</span>. </p> </dd> <dt><strong><span class="code">socket_opts</span></strong></dt> <dd> <p>Socket options to be used for this and subsequent request(s). </p> <p>Overrides any value set by the <span class="bold_code"><a href="set_options.html">set_options</a></span> function. </p> <p>Note that the validity of the options are <strong>not</strong> checked in any way. </p> <p>Note that this may change the socket behaviour (see <span class="bold_code"><a href="javascript:erlhref('../../../../doc/../','kernel','inet.html#setopts');">inet:setopts/2</a></span>) for an already existing, and therefor already connected request handler. </p> <p>By defaults the socket options set by the <span class="bold_code"><a href="#set_options">set_options/1,2</a></span> function is used when establishing connection. </p> </dd> <dt><strong><span class="code">receiver</span></strong></dt> <dd> <p>Defines how the client will deliver the result for a asynchroneous request (<span class="code">sync</span> has the value <span class="code">false</span>). </p> <dl> <dt><strong><span class="code">pid()</span></strong></dt> <dd> <p>Message(s) will be sent to this process in the format: </p> <div class="example"><pre> {http, ReplyInfo} </pre></div> </dd> <dt><strong><span class="code">function/1</span></strong></dt> <dd> <p>Information will be delivered to the receiver via calls to the provided fun: </p> <div class="example"><pre> Receiver(ReplyInfo) </pre></div> </dd> <dt><strong><span class="code">{Module, Funcion, Args}</span></strong></dt> <dd> <p>Information will be delivered to the receiver via calls to the callback function: </p> <div class="example"><pre> apply(Module, Function, [ReplyInfo | Args]) </pre></div> </dd> </dl> <p>In all cases above, <span class="code">ReplyInfo</span> has the following structure: </p> <div class="example"><pre> {RequestId, saved_to_file} {RequestId, {error, Reason}} {RequestId, Result} {RequestId, stream_start, Headers} {RequestId, stream_start, Headers, HandlerPid} {RequestId, stream, BinBodyPart} {RequestId, stream_end, Headers} </pre></div> <p>Defaults to the <span class="code">pid()</span> of the process calling the request function (<span class="code">self()</span>). </p> </dd> </dl> <a name="cancel_request"></a> </p></div> <p><a name="cancel_request-1"><span class="bold_code">cancel_request(RequestId) -> </span></a><br><a name="cancel_request-2"><span class="bold_code">cancel_request(RequestId, Profile) -> ok</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">RequestId = request_id() - A unique identifier as returned by request/4</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> </div> <div class="REFBODY"><p> <p>Cancels an asynchronous HTTP-request. </p> <a name="set_options"></a> </p></div> <p><a name="set_options-1"><span class="bold_code">set_options(Options) -> </span></a><br><a name="set_options-2"><span class="bold_code">set_options(Options, Profile) -> ok | {error, Reason}</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Options = [Option]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Option = {proxy, {Proxy, NoProxy}} | {max_sessions, MaxSessions} | {max_keep_alive_length, MaxKeepAlive} | {keep_alive_timeout, KeepAliveTimeout} | {max_pipeline_length, MaxPipeline} | {pipeline_timeout, PipelineTimeout} | {cookies, CookieMode} | {ipfamily, IpFamily} | {ip, IpAddress} | {port, Port} | {socket_opts, socket_opts()} | {verbose, VerboseMode} </span><br> </div> <div class="REFTYPES"> <span class="bold_code">Proxy = {Hostname, Port}</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Hostname = string() </span><br> </div> <div class="REFBODY">ex: "localhost" or "foo.bar.se"</div> <div class="REFTYPES"> <span class="bold_code">Port = integer()</span><br> </div> <div class="REFBODY">ex: 8080 </div> <div class="REFTYPES"> <span class="bold_code">socket_opts() = [socket_opt()]</span><br> </div> <div class="REFBODY">The options are appended to the socket options used by the client. </div> <div class="REFBODY">These are the default values when a new request handler is started (for the initial connect). They are passed directly to the underlying transport (gen_tcp or ssl) <strong>without</strong> verification! </div> <div class="REFTYPES"> <span class="bold_code">NoProxy = [NoProxyDesc]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">NoProxyDesc = DomainDesc | HostName | IPDesc</span><br> </div> <div class="REFTYPES"> <span class="bold_code">DomainDesc = "*.Domain"</span><br> </div> <div class="REFBODY">ex: "*.ericsson.se"</div> <div class="REFTYPES"> <span class="bold_code">IpDesc = string()</span><br> </div> <div class="REFBODY">ex: "134.138" or "[FEDC:BA98" (all IP-addresses starting with 134.138 or FEDC:BA98), "66.35.250.150" or "[2010:836B:4179::836B:4179]" (a complete IP-address).</div> <div class="REFTYPES"> <span class="bold_code">MaxSessions = integer() </span><br> </div> <div class="REFBODY">Default is <strong>2</strong>. Maximum number of persistent connections to a host.</div> <div class="REFTYPES"> <span class="bold_code">MaxKeepAlive = integer() </span><br> </div> <div class="REFBODY">Default is <strong>5</strong>. Maximum number of outstanding requests on the same connection to a host.</div> <div class="REFTYPES"> <span class="bold_code">KeepAliveTimeout = integer() </span><br> </div> <div class="REFBODY">Default is <strong>120000</strong> (= 2 min). If a persistent connection is idle longer than the keep_alive_timeout the client will close the connection. The server may also have a such a time out but you should not count on it!</div> <div class="REFTYPES"> <span class="bold_code">MaxPipeline = integer() </span><br> </div> <div class="REFBODY">Default is <strong>2</strong>. Maximum number of outstanding requests on a pipelined connection to a host.</div> <div class="REFTYPES"> <span class="bold_code">PipelineTimeout = integer() </span><br> </div> <div class="REFBODY">Default is <strong>0</strong>, which will result in pipelining not being used. If a persistent connection is idle longer than the pipeline_timeout the client will close the connection. </div> <div class="REFTYPES"> <span class="bold_code">CookieMode = enabled | disabled | verify </span><br> </div> <div class="REFBODY">Default is <strong>disabled</strong>. If Cookies are enabled all valid cookies will automatically be saved in the client manager's cookie database. If the option verify is used the function http:verify_cookie/2 has to be called for the cookie to be saved.</div> <div class="REFTYPES"> <span class="bold_code">IpFamily = inet | inet6 | inet6fb4 </span><br> </div> <div class="REFBODY">By default <strong>inet</strong>. When it is set to <span class="code">inet6fb4</span> you can use both ipv4 and ipv6. It first tries <span class="code">inet6</span> and if that does not works falls back to <span class="code">inet</span>. The option is here to provide a workaround for buggy ipv6 stacks to ensure that ipv4 will always work.</div> <div class="REFTYPES"> <span class="bold_code">IpAddress = ip_address() </span><br> </div> <div class="REFBODY">If the host has several network interfaces, this option specifies which one to use. See gen_tcp:connect/3,4 for more info. </div> <div class="REFTYPES"> <span class="bold_code">Port = integer() </span><br> </div> <div class="REFBODY">Specify which local port number to use. See gen_tcp:connect/3,4 for more info. </div> <div class="REFTYPES"> <span class="bold_code">VerboseMode = false | verbose | debug | trace </span><br> </div> <div class="REFBODY">Default is <strong>false</strong>. This option is used to switch on (or off) different levels of erlang trace on the client. It is a debug feature.</div> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> </div> <div class="REFBODY"><p> <p>Sets options to be used for subsequent requests.</p> <div class="note"> <div class="label">Note</div> <div class="content"><p> <p>If possible the client will keep its connections alive and use persistent connections with or without pipeline depending on configuration and current circumstances. The HTTP/1.1 specification does not provide a guideline for how many requests that would be ideal to be sent on a persistent connection, this very much depends on the application. Note that a very long queue of requests may cause a user perceived delays as earlier request may take a long time to complete. The HTTP/1.1 specification does suggest a limit of 2 persistent connections per server, which is the default value of the max_sessions option. </p> </p></div> </div> <a name="stream_next"></a> </p></div> <p><a name="stream_next-1"><span class="bold_code">stream_next(Pid) -> ok</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Pid = pid() - as received in the stream_start message</span><br> </div> </div> <div class="REFBODY"><p> <p>Triggers the next message to be streamed, e.i. same behavior as active once for sockets.</p> <a name="verify_cookie"></a> <a name="store_cookie"></a> </p></div> <p><a name="store_cookie-2"><span class="bold_code">store_cookie(SetCookieHeaders, Url) -> </span></a><br><a name="store_cookie-3"><span class="bold_code">store_cookie(SetCookieHeaders, Url, Profile) -> ok | {error, Reason}</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">SetCookieHeaders = headers() - where field = "set-cookie"</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Url = url()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> </div> <div class="REFBODY"><p> <p>Saves the cookies defined in SetCookieHeaders in the client profile's cookie database. You need to call this function if you set the option cookies to <span class="code">verify</span>. If no profile is specified the default profile will be used. </p> <a name="cookie_header"></a> </p></div> <p><a name="cookie_header-1"><span class="bold_code">cookie_header(Url) -> </span></a><br><a name="cookie_header-2"><span class="bold_code">cookie_header(Url, Profile) -> header() | {error, Rason}</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Url = url()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> </div> <div class="REFBODY"><p> <p>Returns the cookie header that would be sent when making a request to Url using the profile Profile. If no profile is specified the default profile will be used. </p> <a name="reset_cookies"></a> </p></div> <p><a name="reset_cookies-0"><span class="bold_code">reset_cookies() -> void()</span></a><br><a name="reset_cookies-1"><span class="bold_code">reset_cookies(Profile) -> void()</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> </div> <div class="REFBODY"><p> <p>Resets (clears) the cookie database for the specified Profile. If no profile is specified the default profile will be used. </p> </p></div> <p><a name="which_cookies-0"><span class="bold_code">which_cookies() -> cookies()</span></a><br><a name="which_cookies-1"><span class="bold_code">which_cookies(Profile) -> cookies()</span></a><br></p> <div class="REFBODY"> <p>Types:</p> <div class="REFTYPES"> <span class="bold_code">Profile = profile()</span><br> </div> <div class="REFTYPES"> <span class="bold_code">cookies() = [cooie_stores()]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">cookie_stores() = {cookies, icookies()} | {session_cookies, icookies()}</span><br> </div> <div class="REFTYPES"> <span class="bold_code">icookies() = [icookie()]</span><br> </div> <div class="REFTYPES"> <span class="bold_code">cookie() = term()</span><br> </div> </div> <div class="REFBODY"><p> <p>This function produces a list of the entire cookie database. It is intended for debugging/testing purposes. If no profile is specified the default profile will be used. </p> </p></div> <h3><a name="id2277536">SEE ALSO</a></h3> <div class="REFBODY"> <p>RFC 2616, <span class="bold_code"><a href="inets.html">inets(3)</a></span>, <span class="bold_code"><a href="javascript:erlhref('../../../../doc/../','kernel','gen_tcp.html');">gen_tcp(3)</a></span>, <span class="bold_code"><a href="javascript:erlhref('../../../../doc/../','ssl','ssl.html');">ssl(3)</a></span> </p> </div> </div> <div class="footer"> <hr> <p>Copyright © 1997-2010 Ericsson AB. All Rights Reserved.</p> </div> </div> </div></body> </html>