Class: HTTPClient

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/httpclient.rb,
lib/httpclient/auth.rb,
lib/httpclient/util.rb,
lib/httpclient/session.rb,
lib/httpclient/timeout.rb,
lib/httpclient/version.rb,
lib/httpclient/connection.rb,
lib/httpclient/ssl_config.rb,
lib/httpclient/include_client.rb

Overview

It is useful to re-use a HTTPClient instance for multiple requests, to re-use HTTP 1.1 persistent connections.

To do that, you sometimes want to store an HTTPClient instance in a global/ class variable location, so it can be accessed and re-used.

This mix-in makes it easy to create class-level access to one or more HTTPClient instances. The HTTPClient instances are lazily initialized on first use (to, for instance, avoid interfering with WebMock/VCR), and are initialized in a thread-safe manner. Note that a HTTPClient, once initialized, is safe for use in multiple threads.

Note that you ‘extend` HTTPClient::IncludeClient, not `include. 

require 'httpclient/include_client'
class Widget
   extend HTTPClient::IncludeClient

   include_http_client
   # and/or, specify more stuff
   include_http_client('http://myproxy:8080', :method_name => :my_client) do |client|
      # any init you want
      client.set_cookie_store nil
      client.
   end
end

That creates two HTTPClient instances available at the class level. The first will be available from Widget.http_client (default method name for ‘include_http_client`), with default initialization.

The second will be available at Widget.my_client, with the init arguments provided, further initialized by the block provided.

In addition to a class-level method, for convenience instance-level methods are also provided. Widget.http_client is identical to Widget.new.http_client

Direct Known Subclasses

HTTPAccess2::Client, OAuthClient

Defined Under Namespace

Modules: DebugSocket, IncludeClient, SocketWrap, Timeout, Util Classes: AuthFilterBase, BadResponseError, BasicAuth, ConfigurationError, ConnectTimeoutError, Connection, DigestAuth, KeepAliveDisconnected, LoopBackSocket, NegotiateAuth, OAuth, ProxyAuth, ProxyBasicAuth, ProxyDigestAuth, ReceiveTimeoutError, RetryableResponse, SSLConfig, SSLSocketWrap, SSPINegotiateAuth, SendTimeoutError, Session, SessionManager, Site, TimeoutError, TimeoutScheduler, WWWAuth

Constant Summary collapse

RUBY_VERSION_STRING = 
"ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE})"
LIB_NAME = 
"(#{VERSION}, #{RUBY_VERSION_STRING})"
PROPFIND_DEFAULT_EXTHEADER =

Default header for PROPFIND request.

{ 'Depth' => '0' }
DEFAULT_AGENT_NAME =

Default User-Agent header

'HTTPClient/1.0'
VERSION = 
'2.4.0'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Util

#argument_to_hash, hash_find_value, #http?, #https?, #keyword_argument, uri_dirname, uri_part_of, urify

Constructor Details

#initialize(*args) ⇒ HTTPClient

Creates a HTTPClient instance which manages sessions, cookies, etc.

HTTPClient.new takes 3 optional arguments for proxy url string, User-Agent String and From header String. User-Agent and From are embedded in HTTP request Header if given. No User-Agent and From header added without setting it explicitly.

proxy = 'http://myproxy:8080'
agent_name = 'MyAgent/0.1'
from = '[email protected]'
HTTPClient.new(proxy, agent_name, from)

You can use a keyword argument style Hash. Keys are :proxy, :agent_name and :from.

HTTPClient.new(:agent_name => 'MyAgent/0.1')



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# File 'lib/httpclient.rb', line 379

def initialize(*args)
  proxy, agent_name, from = keyword_argument(args, :proxy, :agent_name, :from)
  @proxy = nil        # assigned later.
  @no_proxy = nil
  @no_proxy_regexps = []
  @www_auth = WWWAuth.new
  @proxy_auth = ProxyAuth.new
  @request_filter = [@proxy_auth, @www_auth]
  @debug_dev = nil
  @redirect_uri_callback = method(:default_redirect_uri_callback)
  @test_loopback_response = []
  @session_manager = SessionManager.new(self)
  @session_manager.agent_name = agent_name || DEFAULT_AGENT_NAME
  @session_manager.from = from
  @session_manager.ssl_config = @ssl_config = SSLConfig.new(self)
  @cookie_manager = WebAgent::CookieManager.new
  @follow_redirect_count = 10
  load_environment
  self.proxy = proxy if proxy
  keep_webmock_compat
end

Instance Attribute Details

WebAgent::CookieManager

Cookies configurator.



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# File 'lib/httpclient.rb', line 312

def cookie_manager
  @cookie_manager
end

#follow_redirect_count ⇒ Object

How many times get_content and post_content follows HTTP redirect. 10 by default.



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# File 'lib/httpclient.rb', line 326

def follow_redirect_count
  @follow_redirect_count
end

#proxy_auth ⇒ Object (readonly)

HTTPClient::ProxyAuth

Proxy authentication handler.



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# File 'lib/httpclient.rb', line 321

def proxy_auth
  @proxy_auth
end

#request_filter ⇒ Object (readonly)

An array of request filter which can trap HTTP request/response. See HTTPClient::WWWAuth to see how to use it.



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# File 'lib/httpclient.rb', line 319

def request_filter
  @request_filter
end

#ssl_config ⇒ Object (readonly)

HTTPClient::SSLConfig

SSL configurator.



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# File 'lib/httpclient.rb', line 310

def ssl_config
  @ssl_config
end

#test_loopback_response ⇒ Object (readonly)

An array of response HTTP message body String which is used for loop-back test. See test/* to see how to use it. If you want to do loop-back test of HTTP header, use test_loopback_http_response instead.



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# File 'lib/httpclient.rb', line 316

def test_loopback_response
  @test_loopback_response
end

#www_auth ⇒ Object (readonly)

HTTPClient::WWWAuth

WWW authentication handler.



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# File 'lib/httpclient.rb', line 323

def www_auth
  @www_auth
end

Class Method Details

.timeout_scheduler ⇒ Object

CAUTION: caller must aware of race condition.



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# File 'lib/httpclient/timeout.rb', line 116

def timeout_scheduler
  @timeout_scheduler ||= TimeoutScheduler.new
end

Instance Method Details

#cookies ⇒ Object

Returns stored cookies.



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# File 'lib/httpclient.rb', line 553

def cookies
  if @cookie_manager
    @cookie_manager.cookies
  end
end

#debug_dev ⇒ Object

Returns debug device if exists. See debug_dev=.



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# File 'lib/httpclient.rb', line 417

def debug_dev
  @debug_dev
end

#debug_dev=(dev) ⇒ Object

Sets debug device. Once debug device is set, all HTTP requests and responses are dumped to given device. dev must respond to << for dump.

Calling this method resets all existing sessions.



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# File 'lib/httpclient.rb', line 425

def debug_dev=(dev)
  @debug_dev = dev
  reset_all
  @session_manager.debug_dev = dev
end

#default_redirect_uri_callback(uri, res) ⇒ Object

A default method for redirect uri callback. This method is used by HTTPClient instance by default. This callback allows relative redirect such as

Location: ../foo/

in HTTP header.



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# File 'lib/httpclient.rb', line 656

def default_redirect_uri_callback(uri, res)
  newuri = urify(res.header['location'][0])
  if !http?(newuri) && !https?(newuri)
    newuri = uri + newuri
    warn("could be a relative URI in location header which is not recommended")
    warn("'The field value consists of a single absolute URI' in HTTP spec")
  end
  if https?(uri) && !https?(newuri)
    raise BadResponseError.new("redirecting to non-https resource")
  end
  puts "redirect to: #{newuri}" if $DEBUG
  newuri
end

#delete(uri, *args, &block) ⇒ Object

Sends DELETE request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 693

def delete(uri, *args, &block)
  request(:delete, uri, argument_to_hash(args, :body, :header), &block)
end

#delete_async(uri, *args) ⇒ Object

Sends DELETE request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 812

def delete_async(uri, *args)
  header = keyword_argument(args, :header)
  request_async(:delete, uri, nil, nil, header || {})
end

#get(uri, *args, &block) ⇒ Object

Sends GET request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 676

def get(uri, *args, &block)
  request(:get, uri, argument_to_hash(args, :query, :header, :follow_redirect), &block)
end

#get_async(uri, *args) ⇒ Object

Sends GET request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 791

def get_async(uri, *args)
  query, header = keyword_argument(args, :query, :header)
  request_async(:get, uri, query, nil, header || {})
end

#get_content(uri, *args, &block) ⇒ Object

Retrieves a web resource.

uri

a String or an URI object which represents an URL of web resource.

query

a Hash or an Array of query part of URL. e.g. { “a” => “b” } => ‘host/part?a=b’. Give an array to pass multiple value like

[“a”, “b”], [“a”, “c”]

> ‘host/part?a=b&a=c’.

header

a Hash or an Array of extra headers. e.g. { ‘Accept’ => ‘text/html’ } or [[‘Accept’, ‘image/jpeg’], [‘Accept’, ‘image/png’]].

&block

Give a block to get chunked message-body of response like get_content(uri) { |chunked_body| … }. Size of each chunk may not be the same.

get_content follows HTTP redirect status (see HTTP::Status.redirect?) internally and try to retrieve content from redirected URL. See redirect_uri_callback= how HTTP redirection is handled.

If you need to get full HTTP response including HTTP status and headers, use get method. get returns HTTP::Message as a response and you need to follow HTTP redirect by yourself if you need.



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# File 'lib/httpclient.rb', line 592

def get_content(uri, *args, &block)
  query, header = keyword_argument(args, :query, :header)
  success_content(follow_redirect(:get, uri, query, nil, header || {}, &block))
end

#head(uri, *args) ⇒ Object

Sends HEAD request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 671

def head(uri, *args)
  request(:head, uri, argument_to_hash(args, :query, :header, :follow_redirect))
end

#head_async(uri, *args) ⇒ Object

Sends HEAD request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 784

def head_async(uri, *args)
  query, header = keyword_argument(args, :query, :header)
  request_async(:head, uri, query, nil, header || {})
end

#keep_webmock_compat ⇒ Object

webmock 1.6.2 depends on HTTP::Message#body.content to work. let’s keep it work iif webmock is loaded for a while.



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# File 'lib/httpclient.rb', line 403

def keep_webmock_compat
  if respond_to?(:do_get_block_with_webmock)
    ::HTTP::Message.module_eval do
      def body
        def (o = self.content).content
          self
        end
        o
      end
    end
  end
end

#no_proxy ⇒ Object

Returns NO_PROXY setting String if given.



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# File 'lib/httpclient.rb', line 467

def no_proxy
  @no_proxy
end

#no_proxy=(no_proxy) ⇒ Object

Sets NO_PROXY setting String. no_proxy must be a comma separated String. Each entry must be ‘host’ or ‘host:port’ such as; HTTPClient#no_proxy = ‘example.com,example.co.jp:443’

‘localhost’ is treated as a no_proxy site regardless of explicitly listed. HTTPClient checks given URI objects before accessing it. ‘host’ is tail string match. No IP-addr conversion.

You can use environment variable ‘no_proxy’ or ‘NO_PROXY’ for it.

Calling this method resets all existing sessions.



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# File 'lib/httpclient.rb', line 482

def no_proxy=(no_proxy)
  @no_proxy = no_proxy
  @no_proxy_regexps.clear
  if @no_proxy
    @no_proxy.scan(/([^\s:,]+)(?::(\d+))?/) do |host, port|
      if host[0] == ?.
        regexp = /#{Regexp.quote(host)}\z/i
      else
        regexp = /(\A|\.)#{Regexp.quote(host)}\z/i
      end
      @no_proxy_regexps << [regexp, port]
    end
  end
  reset_all
end

#options(uri, *args, &block) ⇒ Object

Sends OPTIONS request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 698

def options(uri, *args, &block)
  request(:options, uri, argument_to_hash(args, :header), &block)
end

#options_async(uri, *args) ⇒ Object

Sends OPTIONS request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 819

def options_async(uri, *args)
  header = keyword_argument(args, :header)
  request_async(:options, uri, nil, nil, header || {})
end

#post(uri, *args, &block) ⇒ Object

Sends POST request to the specified URL. See request for arguments. You should not depend on :follow_redirect => true for POST method. It sends the same POST method to the new location which is prohibited in HTTP spec.



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# File 'lib/httpclient.rb', line 683

def post(uri, *args, &block)
  request(:post, uri, argument_to_hash(args, :body, :header, :follow_redirect), &block)
end

#post_async(uri, *args) ⇒ Object

Sends POST request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 798

def post_async(uri, *args)
  body, header = keyword_argument(args, :body, :header)
  request_async(:post, uri, nil, body || '', header || {})
end

#post_content(uri, *args, &block) ⇒ Object

Posts a content.

uri

a String or an URI object which represents an URL of web resource.

body

a Hash or an Array of body part. e.g.

{ "a" => "b" } => 'a=b'

Give an array to pass multiple value like

[["a", "b"], ["a", "c"]] => 'a=b&a=c'

When you pass a File as a value, it will be posted as a multipart/form-data. e.g.

{ 'upload' => file }

You can also send custom multipart by passing an array of hashes. Each part must have a :content attribute which can be a file, all other keys will become headers.

[{ 'Content-Type' => 'text/plain', :content => "some text" },
 { 'Content-Type' => 'video/mp4', :content => File.new('video.mp4') }]
=> <Two parts with custom Content-Type header>
header

a Hash or an Array of extra headers. e.g.

{ 'Accept' => 'text/html' }

or

[['Accept', 'image/jpeg'], ['Accept', 'image/png']].
&block

Give a block to get chunked message-body of response like

post_content(uri) { |chunked_body| ... }.

Size of each chunk may not be the same.

post_content follows HTTP redirect status (see HTTP::Status.redirect?) internally and try to post the content to redirected URL. See redirect_uri_callback= how HTTP redirection is handled. Bear in mind that you should not depend on post_content because it sends the same POST method to the new location which is prohibited in HTTP spec.

If you need to get full HTTP response including HTTP status and headers, use post method.



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# File 'lib/httpclient.rb', line 629

def post_content(uri, *args, &block)
  body, header = keyword_argument(args, :body, :header)
  success_content(follow_redirect(:post, uri, nil, body, header || {}, &block))
end

#propfind(uri, *args, &block) ⇒ Object

Sends PROPFIND request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 703

def propfind(uri, *args, &block)
  request(:propfind, uri, argument_to_hash(args, :header), &block)
end

#propfind_async(uri, *args) ⇒ Object

Sends PROPFIND request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 826

def propfind_async(uri, *args)
  header = keyword_argument(args, :header)
  request_async(:propfind, uri, nil, nil, header || PROPFIND_DEFAULT_EXTHEADER)
end

#proppatch(uri, *args, &block) ⇒ Object

Sends PROPPATCH request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 708

def proppatch(uri, *args, &block)
  request(:proppatch, uri, argument_to_hash(args, :body, :header), &block)
end

#proppatch_async(uri, *args) ⇒ Object

Sends PROPPATCH request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 833

def proppatch_async(uri, *args)
  body, header = keyword_argument(args, :body, :header)
  request_async(:proppatch, uri, nil, body, header || {})
end

#proxy ⇒ Object

Returns URI object of HTTP proxy if exists.



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# File 'lib/httpclient.rb', line 432

def proxy
  @proxy
end

#proxy=(proxy) ⇒ Object

Sets HTTP proxy used for HTTP connection. Given proxy can be an URI, a String or nil. You can set user/password for proxy authentication like HTTPClient#proxy = ‘user:passwd@myproxy:8080’

You can use environment variable ‘http_proxy’ or ‘HTTP_PROXY’ for it. You need to use ‘cgi_http_proxy’ or ‘CGI_HTTP_PROXY’ instead if you run HTTPClient from CGI environment from security reason. (HTTPClient checks ‘REQUEST_METHOD’ environment variable whether it’s CGI or not)

Calling this method resets all existing sessions.



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# File 'lib/httpclient.rb', line 446

def proxy=(proxy)
  if proxy.nil? || proxy.to_s.empty?
    @proxy = nil
    @proxy_auth.reset_challenge
  else
    @proxy = urify(proxy)
    if @proxy.scheme == nil or @proxy.scheme.downcase != 'http' or
        @proxy.host == nil or @proxy.port == nil
      raise ArgumentError.new("unsupported proxy #{proxy}")
    end
    @proxy_auth.reset_challenge
    if @proxy.user || @proxy.password
      @proxy_auth.set_auth(@proxy.user, @proxy.password)
    end
  end
  reset_all
  @session_manager.proxy = @proxy
  @proxy
end

#put(uri, *args, &block) ⇒ Object

Sends PUT request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 688

def put(uri, *args, &block)
  request(:put, uri, argument_to_hash(args, :body, :header), &block)
end

#put_async(uri, *args) ⇒ Object

Sends PUT request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 805

def put_async(uri, *args)
  body, header = keyword_argument(args, :body, :header)
  request_async(:put, uri, nil, body || '', header || {})
end

#redirect_uri_callback=(redirect_uri_callback) ⇒ Object

Sets callback proc when HTTP redirect status is returned for get_content and post_content. default_redirect_uri_callback is used by default.

If you need strict implementation which does not allow relative URI redirection, set strict_redirect_uri_callback instead.

clnt.redirect_uri_callback = clnt.method(:strict_redirect_uri_callback)



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# File 'lib/httpclient.rb', line 567

def redirect_uri_callback=(redirect_uri_callback)
  @redirect_uri_callback = redirect_uri_callback
end

#request(method, uri, *args, &block) ⇒ Object

Sends a request to the specified URL.

method

HTTP method to be sent. method.to_s.upcase is used.

uri

a String or an URI object which represents an URL of web resource.

query

a Hash or an Array of query part of URL. e.g. { “a” => “b” } => ‘host/part?a=b’ Give an array to pass multiple value like

[“a”, “b”], [“a”, “c”]

> ‘host/part?a=b&a=c’

body

a Hash or an Array of body part. e.g.

{ "a" => "b" }
=> 'a=b'

Give an array to pass multiple value like

[["a", "b"], ["a", "c"]]
=> 'a=b&a=c'.

When the given method is ‘POST’ and the given body contains a file as a value, it will be posted as a multipart/form-data. e.g.

{ 'upload' => file }

You can also send custom multipart by passing an array of hashes. Each part must have a :content attribute which can be a file, all other keys will become headers.

[{ 'Content-Type' => 'text/plain', :content => "some text" },
 { 'Content-Type' => 'video/mp4', :content => File.new('video.mp4') }]
=> <Two parts with custom Content-Type header>

See HTTP::Message.file? for actual condition of ‘a file’.

header

a Hash or an Array of extra headers. e.g. { ‘Accept’ => ‘text/html’ } or [[‘Accept’, ‘image/jpeg’], [‘Accept’, ‘image/png’]].

&block

Give a block to get chunked message-body of response like get(uri) { |chunked_body| … }. Size of each chunk may not be the same.

You can also pass a String as a body. HTTPClient just sends a String as a HTTP request message body.

When you pass an IO as a body, HTTPClient sends it as a HTTP request with chunked encoding (Transfer-Encoding: chunked in HTTP header) if IO does not respond to :size. Bear in mind that some server application does not support chunked request. At least cgi.rb does not support it.



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# File 'lib/httpclient.rb', line 755

def request(method, uri, *args, &block)
  query, body, header, follow_redirect = keyword_argument(args, :query, :body, :header, :follow_redirect)
  if [:post, :put].include?(method)
    body ||= ''
  end
  if method == :propfind
    header ||= PROPFIND_DEFAULT_EXTHEADER
  else
    header ||= {}
  end
  uri = urify(uri)
  if block
    if block.arity == 1
      filtered_block = proc { |res, str|
        block.call(str)
      }
    else
      filtered_block = block
    end
  end
  if follow_redirect
    follow_redirect(method, uri, query, body, header, &block)
  else
    do_request(method, uri, query, body, header, &filtered_block)
  end
end

#request_async(method, uri, query = nil, body = nil, header = {}) ⇒ Object

Sends a request in async style. request method creates new Thread for HTTP connection and returns a HTTPClient::Connection instance immediately.

Arguments definition is the same as request.



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# File 'lib/httpclient.rb', line 849

def request_async(method, uri, query = nil, body = nil, header = {})
  uri = urify(uri)
  do_request_async(method, uri, query, body, header)
end

#reset(uri) ⇒ Object

Resets internal session for the given URL. Keep-alive connection for the site (host-port pair) is disconnected if exists.



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# File 'lib/httpclient.rb', line 856

def reset(uri)
  uri = urify(uri)
  @session_manager.reset(uri)
end

#reset_all ⇒ Object

Resets all of internal sessions. Keep-alive connections are disconnected.



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# File 'lib/httpclient.rb', line 862

def reset_all
  @session_manager.reset_all
end

#save_cookie_store ⇒ Object

Try to save Cookies to the file specified in set_cookie_store. Unexpected error will be raised if you don’t call set_cookie_store first. (interface mismatch between WebAgent::CookieManager implementation)



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# File 'lib/httpclient.rb', line 548

def save_cookie_store
  @cookie_manager.save_cookies
end

#set_auth(domain, user, passwd) ⇒ Object

Sets credential for Web server authentication.

domain

a String or an URI to specify where HTTPClient should use this

credential.  If you set uri to nil, HTTPClient uses this credential
wherever a server requires it.
user

username String.

passwd

password String.

You can set multiple credentials for each uri.

clnt.set_auth('http://www.example.com/foo/', 'foo_user', 'passwd')
clnt.set_auth('http://www.example.com/bar/', 'bar_user', 'passwd')

Calling this method resets all existing sessions.



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# File 'lib/httpclient.rb', line 511

def set_auth(domain, user, passwd)
  uri = urify(domain)
  @www_auth.set_auth(uri, user, passwd)
  reset_all
end

#set_basic_auth(domain, user, passwd) ⇒ Object

Deprecated. Use set_auth instead.



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# File 'lib/httpclient.rb', line 518

def set_basic_auth(domain, user, passwd)
  uri = urify(domain)
  @www_auth.basic_auth.set(uri, user, passwd)
  reset_all
end

#set_cookie_store(filename) ⇒ Object

Sets the filename where non-volatile Cookies be saved by calling save_cookie_store. This method tries to load and managing Cookies from the specified file.

Calling this method resets all existing sessions.



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# File 'lib/httpclient.rb', line 539

def set_cookie_store(filename)
  @cookie_manager.cookies_file = filename
  @cookie_manager.load_cookies if filename
  reset_all
end

#set_proxy_auth(user, passwd) ⇒ Object

Sets credential for Proxy authentication.

user

username String.

passwd

password String.

Calling this method resets all existing sessions.



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# File 'lib/httpclient.rb', line 529

def set_proxy_auth(user, passwd)
  @proxy_auth.set_auth(user, passwd)
  reset_all
end

#strict_redirect_uri_callback(uri, res) ⇒ Object

A method for redirect uri callback. How to use:

clnt.redirect_uri_callback = clnt.method(:strict_redirect_uri_callback)

This callback does not allow relative redirect such as

Location: ../foo/

in HTTP header. (raises BadResponseError instead)



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# File 'lib/httpclient.rb', line 639

def strict_redirect_uri_callback(uri, res)
  newuri = urify(res.header['location'][0])
  if https?(uri) && !https?(newuri)
    raise BadResponseError.new("redirecting to non-https resource")
  end
  if !http?(newuri) && !https?(newuri)
    raise BadResponseError.new("unexpected location: #{newuri}", res)
  end
  puts "redirect to: #{newuri}" if $DEBUG
  newuri
end

#trace(uri, *args, &block) ⇒ Object

Sends TRACE request to the specified URL. See request for arguments.



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# File 'lib/httpclient.rb', line 713

def trace(uri, *args, &block)
  request('TRACE', uri, argument_to_hash(args, :query, :header), &block)
end

#trace_async(uri, *args) ⇒ Object

Sends TRACE request in async style. See request_async for arguments. It immediately returns a HTTPClient::Connection instance as a result.



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# File 'lib/httpclient.rb', line 840

def trace_async(uri, *args)
  query, body, header = keyword_argument(args, :query, :body, :header)
  request_async(:trace, uri, query, body, header || {})
end