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ruby--ruby/lib/net/http.rb
drbrain 023561f704 * lib/net/http.rb: Removed duplicate Accept-Encoding in Net::HTTP#get. 
[ruby-trunk - Bug #7924]
* test/net/http/test_http.rb:  Test for the above.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39463 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2013-02-24 06:15:05 +00:00

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#
# = net/http.rb
#
# Copyright (c) 1999-2007 Yukihiro Matsumoto
# Copyright (c) 1999-2007 Minero Aoki
# Copyright (c) 2001 GOTOU Yuuzou
#
# Written and maintained by Minero Aoki <aamine@loveruby.net>.
# HTTPS support added by GOTOU Yuuzou <gotoyuzo@notwork.org>.
#
# This file is derived from "http-access.rb".
#
# Documented by Minero Aoki; converted to RDoc by William Webber.
#
# This program is free software. You can re-distribute and/or
# modify this program under the same terms of ruby itself ---
# Ruby Distribution License or GNU General Public License.
#
# See Net::HTTP for an overview and examples.
#
require 'net/protocol'
require 'uri'
module Net #:nodoc:
autoload :OpenSSL, 'openssl'
# :stopdoc:
class HTTPBadResponse < StandardError; end
class HTTPHeaderSyntaxError < StandardError; end
# :startdoc:
# == An HTTP client API for Ruby.
#
# Net::HTTP provides a rich library which can be used to build HTTP
# user-agents. For more details about HTTP see
# [RFC2616](http://www.ietf.org/rfc/rfc2616.txt)
#
# Net::HTTP is designed to work closely with URI. URI::HTTP#host,
# URI::HTTP#port and URI::HTTP#request_uri are designed to work with
# Net::HTTP.
#
# If you are only performing a few GET requests you should try OpenURI.
#
# == Simple Examples
#
# All examples assume you have loaded Net::HTTP with:
#
# require 'net/http'
#
# This will also require 'uri' so you don't need to require it separately.
#
# The Net::HTTP methods in the following section do not persist
# connections. They are not recommended if you are performing many HTTP
# requests.
#
# === GET
#
# Net::HTTP.get('example.com', '/index.html') # => String
#
# === GET by URI
#
# uri = URI('http://example.com/index.html?count=10')
# Net::HTTP.get(uri) # => String
#
# === GET with Dynamic Parameters
#
# uri = URI('http://example.com/index.html')
# params = { :limit => 10, :page => 3 }
# uri.query = URI.encode_www_form(params)
#
# res = Net::HTTP.get_response(uri)
# puts res.body if res.is_a?(Net::HTTPSuccess)
#
# === POST
#
# uri = URI('http://www.example.com/search.cgi')
# res = Net::HTTP.post_form(uri, 'q' => 'ruby', 'max' => '50')
# puts res.body
#
# === POST with Multiple Values
#
# uri = URI('http://www.example.com/search.cgi')
# res = Net::HTTP.post_form(uri, 'q' => ['ruby', 'perl'], 'max' => '50')
# puts res.body
#
# == How to use Net::HTTP
#
# The following example code can be used as the basis of a HTTP user-agent
# which can perform a variety of request types using persistent
# connections.
#
# uri = URI('http://example.com/some_path?query=string')
#
# Net::HTTP.start(uri.host, uri.port) do |http|
# request = Net::HTTP::Get.new uri
#
# response = http.request request # Net::HTTPResponse object
# end
#
# Net::HTTP::start immediately creates a connection to an HTTP server which
# is kept open for the duration of the block. The connection will remain
# open for multiple requests in the block if the server indicates it
# supports persistent connections.
#
# The request types Net::HTTP supports are listed below in the section "HTTP
# Request Classes".
#
# If you wish to re-use a connection across multiple HTTP requests without
# automatically closing it you can use ::new instead of ::start. #request
# will automatically open a connection to the server if one is not currently
# open. You can manually close the connection with #finish.
#
# For all the Net::HTTP request objects and shortcut request methods you may
# supply either a String for the request path or a URI from which Net::HTTP
# will extract the request path.
#
# === Response Data
#
# uri = URI('http://example.com/index.html')
# res = Net::HTTP.get_response(uri)
#
# # Headers
# res['Set-Cookie'] # => String
# res.get_fields('set-cookie') # => Array
# res.to_hash['set-cookie'] # => Array
# puts "Headers: #{res.to_hash.inspect}"
#
# # Status
# puts res.code # => '200'
# puts res.message # => 'OK'
# puts res.class.name # => 'HTTPOK'
#
# # Body
# puts res.body if res.response_body_permitted?
#
# === Following Redirection
#
# Each Net::HTTPResponse object belongs to a class for its response code.
#
# For example, all 2XX responses are instances of a Net::HTTPSuccess
# subclass, a 3XX response is an instance of a Net::HTTPRedirection
# subclass and a 200 response is an instance of the Net::HTTPOK class. For
# details of response classes, see the section "HTTP Response Classes"
# below.
#
# Using a case statement you can handle various types of responses properly:
#
# def fetch(uri_str, limit = 10)
# # You should choose a better exception.
# raise ArgumentError, 'too many HTTP redirects' if limit == 0
#
# response = Net::HTTP.get_response(URI(uri_str))
#
# case response
# when Net::HTTPSuccess then
# response
# when Net::HTTPRedirection then
# location = response['location']
# warn "redirected to #{location}"
# fetch(location, limit - 1)
# else
# response.value
# end
# end
#
# print fetch('http://www.ruby-lang.org')
#
# === POST
#
# A POST can be made using the Net::HTTP::Post request class. This example
# creates a urlencoded POST body:
#
# uri = URI('http://www.example.com/todo.cgi')
# req = Net::HTTP::Post.new(uri)
# req.set_form_data('from' => '2005-01-01', 'to' => '2005-03-31')
#
# res = Net::HTTP.start(uri.hostname, uri.port) do |http|
# http.request(req)
# end
#
# case res
# when Net::HTTPSuccess, Net::HTTPRedirection
# # OK
# else
# res.value
# end
#
# At this time Net::HTTP does not support multipart/form-data. To send
# multipart/form-data use Net::HTTPRequest#body= and
# Net::HTTPRequest#content_type=:
#
# req = Net::HTTP::Post.new(uri)
# req.body = multipart_data
# req.content_type = 'multipart/form-data'
#
# Other requests that can contain a body such as PUT can be created in the
# same way using the corresponding request class (Net::HTTP::Put).
#
# === Setting Headers
#
# The following example performs a conditional GET using the
# If-Modified-Since header. If the files has not been modified since the
# time in the header a Not Modified response will be returned. See RFC 2616
# section 9.3 for further details.
#
# uri = URI('http://example.com/cached_response')
# file = File.stat 'cached_response'
#
# req = Net::HTTP::Get.new(uri)
# req['If-Modified-Since'] = file.mtime.rfc2822
#
# res = Net::HTTP.start(uri.hostname, uri.port) {|http|
# http.request(req)
# }
#
# open 'cached_response', 'w' do |io|
# io.write res.body
# end if res.is_a?(Net::HTTPSuccess)
#
# === Basic Authentication
#
# Basic authentication is performed according to
# [RFC2617](http://www.ietf.org/rfc/rfc2617.txt)
#
# uri = URI('http://example.com/index.html?key=value')
#
# req = Net::HTTP::Get.new(uri)
# req.basic_auth 'user', 'pass'
#
# res = Net::HTTP.start(uri.hostname, uri.port) {|http|
# http.request(req)
# }
# puts res.body
#
# === Streaming Response Bodies
#
# By default Net::HTTP reads an entire response into memory. If you are
# handling large files or wish to implement a progress bar you can instead
# stream the body directly to an IO.
#
# uri = URI('http://example.com/large_file')
#
# Net::HTTP.start(uri.host, uri.port) do |http|
# request = Net::HTTP::Get.new uri
#
# http.request request do |response|
# open 'large_file', 'w' do |io|
# response.read_body do |chunk|
# io.write chunk
# end
# end
# end
# end
#
# === HTTPS
#
# HTTPS is enabled for an HTTP connection by Net::HTTP#use_ssl=.
#
# uri = URI('https://secure.example.com/some_path?query=string')
#
# Net::HTTP.start(uri.host, uri.port,
# :use_ssl => uri.scheme == 'https') do |http|
# request = Net::HTTP::Get.new uri
#
# response = http.request request # Net::HTTPResponse object
# end
#
# In previous versions of ruby you would need to require 'net/https' to use
# HTTPS. This is no longer true.
#
# === Proxies
#
# Net::HTTP will automatically create a proxy from the +http_proxy+
# environment variable if it is present. To disable use of +http_proxy+,
# pass +nil+ for the proxy address.
#
# You may also create a custom proxy:
#
# proxy_addr = 'your.proxy.host'
# proxy_port = 8080
#
# Net::HTTP.new('example.com', nil, proxy_addr, proxy_port).start { |http|
# # always proxy via your.proxy.addr:8080
# }
#
# See Net::HTTP.new for further details and examples such as proxies that
# require a username and password.
#
# === Compression
#
# Net::HTTP automatically adds Accept-Encoding for compression of response
# bodies and automatically decompresses gzip and deflate responses unless a
# Range header was sent.
#
# Compression can be disabled through the Accept-Encoding: identity header.
#
# == HTTP Request Classes
#
# Here is the HTTP request class hierarchy.
#
# * Net::HTTPRequest
# * Net::HTTP::Get
# * Net::HTTP::Head
# * Net::HTTP::Post
# * Net::HTTP::Patch
# * Net::HTTP::Put
# * Net::HTTP::Proppatch
# * Net::HTTP::Lock
# * Net::HTTP::Unlock
# * Net::HTTP::Options
# * Net::HTTP::Propfind
# * Net::HTTP::Delete
# * Net::HTTP::Move
# * Net::HTTP::Copy
# * Net::HTTP::Mkcol
# * Net::HTTP::Trace
#
# == HTTP Response Classes
#
# Here is HTTP response class hierarchy. All classes are defined in Net
# module and are subclasses of Net::HTTPResponse.
#
# HTTPUnknownResponse:: For unhandled HTTP extensions
# HTTPInformation:: 1xx
# HTTPContinue:: 100
# HTTPSwitchProtocol:: 101
# HTTPSuccess:: 2xx
# HTTPOK:: 200
# HTTPCreated:: 201
# HTTPAccepted:: 202
# HTTPNonAuthoritativeInformation:: 203
# HTTPNoContent:: 204
# HTTPResetContent:: 205
# HTTPPartialContent:: 206
# HTTPMultiStatus:: 207
# HTTPRedirection:: 3xx
# HTTPMultipleChoices:: 300
# HTTPMovedPermanently:: 301
# HTTPFound:: 302
# HTTPSeeOther:: 303
# HTTPNotModified:: 304
# HTTPUseProxy:: 305
# HTTPTemporaryRedirect:: 307
# HTTPClientError:: 4xx
# HTTPBadRequest:: 400
# HTTPUnauthorized:: 401
# HTTPPaymentRequired:: 402
# HTTPForbidden:: 403
# HTTPNotFound:: 404
# HTTPMethodNotAllowed:: 405
# HTTPNotAcceptable:: 406
# HTTPProxyAuthenticationRequired:: 407
# HTTPRequestTimeOut:: 408
# HTTPConflict:: 409
# HTTPGone:: 410
# HTTPLengthRequired:: 411
# HTTPPreconditionFailed:: 412
# HTTPRequestEntityTooLarge:: 413
# HTTPRequestURITooLong:: 414
# HTTPUnsupportedMediaType:: 415
# HTTPRequestedRangeNotSatisfiable:: 416
# HTTPExpectationFailed:: 417
# HTTPUnprocessableEntity:: 422
# HTTPLocked:: 423
# HTTPFailedDependency:: 424
# HTTPUpgradeRequired:: 426
# HTTPPreconditionRequired:: 428
# HTTPTooManyRequests:: 429
# HTTPRequestHeaderFieldsTooLarge:: 431
# HTTPServerError:: 5xx
# HTTPInternalServerError:: 500
# HTTPNotImplemented:: 501
# HTTPBadGateway:: 502
# HTTPServiceUnavailable:: 503
# HTTPGatewayTimeOut:: 504
# HTTPVersionNotSupported:: 505
# HTTPInsufficientStorage:: 507
# HTTPNetworkAuthenticationRequired:: 511
#
# There is also the Net::HTTPBadResponse exception which is raised when
# there is a protocol error.
#
class HTTP < Protocol
# :stopdoc:
Revision = %q$Revision$.split[1]
HTTPVersion = '1.1'
begin
require 'zlib'
require 'stringio' #for our purposes (unpacking gzip) lump these together
HAVE_ZLIB=true
rescue LoadError
HAVE_ZLIB=false
end
# :startdoc:
# Turns on net/http 1.2 (ruby 1.8) features.
# Defaults to ON in ruby 1.8 or later.
def HTTP.version_1_2
true
end
# Returns true if net/http is in version 1.2 mode.
# Defaults to true.
def HTTP.version_1_2?
true
end
def HTTP.version_1_1? #:nodoc:
false
end
class << HTTP
alias is_version_1_1? version_1_1? #:nodoc:
alias is_version_1_2? version_1_2? #:nodoc:
end
#
# short cut methods
#
#
# Gets the body text from the target and outputs it to $stdout. The
# target can either be specified as
# (+uri+), or as (+host+, +path+, +port+ = 80); so:
#
# Net::HTTP.get_print URI('http://www.example.com/index.html')
#
# or:
#
# Net::HTTP.get_print 'www.example.com', '/index.html'
#
def HTTP.get_print(uri_or_host, path = nil, port = nil)
get_response(uri_or_host, path, port) {|res|
res.read_body do |chunk|
$stdout.print chunk
end
}
nil
end
# Sends a GET request to the target and returns the HTTP response
# as a string. The target can either be specified as
# (+uri+), or as (+host+, +path+, +port+ = 80); so:
#
# print Net::HTTP.get(URI('http://www.example.com/index.html'))
#
# or:
#
# print Net::HTTP.get('www.example.com', '/index.html')
#
def HTTP.get(uri_or_host, path = nil, port = nil)
get_response(uri_or_host, path, port).body
end
# Sends a GET request to the target and returns the HTTP response
# as a Net::HTTPResponse object. The target can either be specified as
# (+uri+), or as (+host+, +path+, +port+ = 80); so:
#
# res = Net::HTTP.get_response(URI('http://www.example.com/index.html'))
# print res.body
#
# or:
#
# res = Net::HTTP.get_response('www.example.com', '/index.html')
# print res.body
#
def HTTP.get_response(uri_or_host, path = nil, port = nil, &block)
if path
host = uri_or_host
new(host, port || HTTP.default_port).start {|http|
return http.request_get(path, &block)
}
else
uri = uri_or_host
start(uri.hostname, uri.port,
:use_ssl => uri.scheme == 'https') {|http|
return http.request_get(uri, &block)
}
end
end
# Posts HTML form data to the specified URI object.
# The form data must be provided as a Hash mapping from String to String.
# Example:
#
# { "cmd" => "search", "q" => "ruby", "max" => "50" }
#
# This method also does Basic Authentication iff +url+.user exists.
# But userinfo for authentication is deprecated (RFC3986).
# So this feature will be removed.
#
# Example:
#
# require 'net/http'
# require 'uri'
#
# Net::HTTP.post_form URI('http://www.example.com/search.cgi'),
# { "q" => "ruby", "max" => "50" }
#
def HTTP.post_form(url, params)
req = Post.new(url)
req.form_data = params
req.basic_auth url.user, url.password if url.user
start(url.hostname, url.port,
:use_ssl => url.scheme == 'https' ) {|http|
http.request(req)
}
end
#
# HTTP session management
#
# The default port to use for HTTP requests; defaults to 80.
def HTTP.default_port
http_default_port()
end
# The default port to use for HTTP requests; defaults to 80.
def HTTP.http_default_port
80
end
# The default port to use for HTTPS requests; defaults to 443.
def HTTP.https_default_port
443
end
def HTTP.socket_type #:nodoc: obsolete
BufferedIO
end
# :call-seq:
# HTTP.start(address, port, p_addr, p_port, p_user, p_pass, &block)
# HTTP.start(address, port=nil, p_addr=nil, p_port=nil, p_user=nil, p_pass=nil, opt, &block)
#
# Creates a new Net::HTTP object, then additionally opens the TCP
# connection and HTTP session.
#
# Arguments are the following:
# _address_ :: hostname or IP address of the server
# _port_ :: port of the server
# _p_addr_ :: address of proxy
# _p_port_ :: port of proxy
# _p_user_ :: user of proxy
# _p_pass_ :: pass of proxy
# _opt_ :: optional hash
#
# _opt_ sets following values by its accessor.
# The keys are ca_file, ca_path, cert, cert_store, ciphers,
# close_on_empty_response, key, open_timeout, read_timeout, ssl_timeout,
# ssl_version, use_ssl, verify_callback, verify_depth and verify_mode.
# If you set :use_ssl as true, you can use https and default value of
# verify_mode is set as OpenSSL::SSL::VERIFY_PEER.
#
# If the optional block is given, the newly
# created Net::HTTP object is passed to it and closed when the
# block finishes. In this case, the return value of this method
# is the return value of the block. If no block is given, the
# return value of this method is the newly created Net::HTTP object
# itself, and the caller is responsible for closing it upon completion
# using the finish() method.
def HTTP.start(address, *arg, &block) # :yield: +http+
arg.pop if opt = Hash.try_convert(arg[-1])
port, p_addr, p_port, p_user, p_pass = *arg
port = https_default_port if !port && opt && opt[:use_ssl]
http = new(address, port, p_addr, p_port, p_user, p_pass)
if opt
if opt[:use_ssl]
opt = {verify_mode: OpenSSL::SSL::VERIFY_PEER}.update(opt)
end
http.methods.grep(/\A(\w+)=\z/) do |meth|
key = $1.to_sym
opt.key?(key) or next
http.__send__(meth, opt[key])
end
end
http.start(&block)
end
class << HTTP
alias newobj new # :nodoc:
end
# Creates a new Net::HTTP object without opening a TCP connection or
# HTTP session.
#
# The +address+ should be a DNS hostname or IP address, the +port+ is the
# port the server operates on. If no +port+ is given the default port for
# HTTP or HTTPS is used.
#
# If none of the +p_+ arguments are given, the proxy host and port are
# taken from the +http_proxy+ environment variable (or its uppercase
# equivalent) if present. If the proxy requires authentication you must
# supply it by hand. See URI::Generic#find_proxy for details of proxy
# detection from the environment. To disable proxy detection set +p_addr+
# to nil.
#
# If you are connecting to a custom proxy, +p_addr+ the DNS name or IP
# address of the proxy host, +p_port+ the port to use to access the proxy,
# and +p_user+ and +p_pass+ the username and password if authorization is
# required to use the proxy.
#
def HTTP.new(address, port = nil, p_addr = :ENV, p_port = nil, p_user = nil, p_pass = nil)
http = super address, port
if proxy_class? then # from Net::HTTP::Proxy()
http.proxy_from_env = @proxy_from_env
http.proxy_address = @proxy_address
http.proxy_port = @proxy_port
http.proxy_user = @proxy_user
http.proxy_pass = @proxy_pass
elsif p_addr == :ENV then
http.proxy_from_env = true
else
http.proxy_address = p_addr
http.proxy_port = p_port || default_port
http.proxy_user = p_user
http.proxy_pass = p_pass
end
http
end
# Creates a new Net::HTTP object for the specified server address,
# without opening the TCP connection or initializing the HTTP session.
# The +address+ should be a DNS hostname or IP address.
def initialize(address, port = nil)
@address = address
@port = (port || HTTP.default_port)
@local_host = nil
@local_port = nil
@curr_http_version = HTTPVersion
@keep_alive_timeout = 2
@last_communicated = nil
@close_on_empty_response = false
@socket = nil
@started = false
@open_timeout = nil
@read_timeout = 60
@continue_timeout = nil
@debug_output = nil
@proxy_from_env = false
@proxy_uri = nil
@proxy_address = nil
@proxy_port = nil
@proxy_user = nil
@proxy_pass = nil
@use_ssl = false
@ssl_context = nil
@ssl_session = nil
@enable_post_connection_check = true
@sspi_enabled = false
SSL_IVNAMES.each do |ivname|
instance_variable_set ivname, nil
end
end
def inspect
"#<#{self.class} #{@address}:#{@port} open=#{started?}>"
end
# *WARNING* This method opens a serious security hole.
# Never use this method in production code.
#
# Sets an output stream for debugging.
#
# http = Net::HTTP.new
# http.set_debug_output $stderr
# http.start { .... }
#
def set_debug_output(output)
warn 'Net::HTTP#set_debug_output called after HTTP started' if started?
@debug_output = output
end
# The DNS host name or IP address to connect to.
attr_reader :address
# The port number to connect to.
attr_reader :port
# The local host used to estabilish the connection.
attr_accessor :local_host
# The local port used to estabilish the connection.
attr_accessor :local_port
attr_writer :proxy_from_env
attr_writer :proxy_address
attr_writer :proxy_port
attr_writer :proxy_user
attr_writer :proxy_pass
# Number of seconds to wait for the connection to open. Any number
# may be used, including Floats for fractional seconds. If the HTTP
# object cannot open a connection in this many seconds, it raises a
# Net::OpenTimeout exception.
attr_accessor :open_timeout
# Number of seconds to wait for one block to be read (via one read(2)
# call). Any number may be used, including Floats for fractional
# seconds. If the HTTP object cannot read data in this many seconds,
# it raises a Net::ReadTimeout exception.
attr_reader :read_timeout
# Setter for the read_timeout attribute.
def read_timeout=(sec)
@socket.read_timeout = sec if @socket
@read_timeout = sec
end
# Seconds to wait for 100 Continue response. If the HTTP object does not
# receive a response in this many seconds it sends the request body.
attr_reader :continue_timeout
# Setter for the continue_timeout attribute.
def continue_timeout=(sec)
@socket.continue_timeout = sec if @socket
@continue_timeout = sec
end
# Seconds to reuse the connection of the previous request.
# If the idle time is less than this Keep-Alive Timeout,
# Net::HTTP reuses the TCP/IP socket used by the previous communication.
# The default value is 2 seconds.
attr_accessor :keep_alive_timeout
# Returns true if the HTTP session has been started.
def started?
@started
end
alias active? started? #:nodoc: obsolete
attr_accessor :close_on_empty_response
# Returns true if SSL/TLS is being used with HTTP.
def use_ssl?
@use_ssl
end
# Turn on/off SSL.
# This flag must be set before starting session.
# If you change use_ssl value after session started,
# a Net::HTTP object raises IOError.
def use_ssl=(flag)
flag = flag ? true : false
if started? and @use_ssl != flag
raise IOError, "use_ssl value changed, but session already started"
end
@use_ssl = flag
end
SSL_IVNAMES = [
:@ca_file,
:@ca_path,
:@cert,
:@cert_store,
:@ciphers,
:@key,
:@ssl_timeout,
:@ssl_version,
:@verify_callback,
:@verify_depth,
:@verify_mode,
]
SSL_ATTRIBUTES = [
:ca_file,
:ca_path,
:cert,
:cert_store,
:ciphers,
:key,
:ssl_timeout,
:ssl_version,
:verify_callback,
:verify_depth,
:verify_mode,
]
# Sets path of a CA certification file in PEM format.
#
# The file can contain several CA certificates.
attr_accessor :ca_file
# Sets path of a CA certification directory containing certifications in
# PEM format.
attr_accessor :ca_path
# Sets an OpenSSL::X509::Certificate object as client certificate.
# (This method is appeared in Michal Rokos's OpenSSL extension).
attr_accessor :cert
# Sets the X509::Store to verify peer certificate.
attr_accessor :cert_store
# Sets the available ciphers. See OpenSSL::SSL::SSLContext#ciphers=
attr_accessor :ciphers
# Sets an OpenSSL::PKey::RSA or OpenSSL::PKey::DSA object.
# (This method is appeared in Michal Rokos's OpenSSL extension.)
attr_accessor :key
# Sets the SSL timeout seconds.
attr_accessor :ssl_timeout
# Sets the SSL version. See OpenSSL::SSL::SSLContext#ssl_version=
attr_accessor :ssl_version
# Sets the verify callback for the server certification verification.
attr_accessor :verify_callback
# Sets the maximum depth for the certificate chain verification.
attr_accessor :verify_depth
# Sets the flags for server the certification verification at beginning of
# SSL/TLS session.
#
# OpenSSL::SSL::VERIFY_NONE or OpenSSL::SSL::VERIFY_PEER are acceptable.
attr_accessor :verify_mode
# Returns the X.509 certificates the server presented.
def peer_cert
if not use_ssl? or not @socket
return nil
end
@socket.io.peer_cert
end
# Opens a TCP connection and HTTP session.
#
# When this method is called with a block, it passes the Net::HTTP
# object to the block, and closes the TCP connection and HTTP session
# after the block has been executed.
#
# When called with a block, it returns the return value of the
# block; otherwise, it returns self.
#
def start # :yield: http
raise IOError, 'HTTP session already opened' if @started
if block_given?
begin
do_start
return yield(self)
ensure
do_finish
end
end
do_start
self
end
def do_start
connect
@started = true
end
private :do_start
def connect
if proxy? then
conn_address = proxy_address
conn_port = proxy_port
else
conn_address = address
conn_port = port
end
D "opening connection to #{conn_address}:#{conn_port}..."
s = Timeout.timeout(@open_timeout, Net::OpenTimeout) {
TCPSocket.open(conn_address, conn_port, @local_host, @local_port)
}
D "opened"
if use_ssl?
ssl_parameters = Hash.new
iv_list = instance_variables
SSL_IVNAMES.each_with_index do |ivname, i|
if iv_list.include?(ivname) and
value = instance_variable_get(ivname)
ssl_parameters[SSL_ATTRIBUTES[i]] = value if value
end
end
@ssl_context = OpenSSL::SSL::SSLContext.new
@ssl_context.set_params(ssl_parameters)
D "starting SSL for #{conn_address}:#{conn_port}..."
s = OpenSSL::SSL::SSLSocket.new(s, @ssl_context)
s.sync_close = true
D "SSL established"
end
@socket = BufferedIO.new(s)
@socket.read_timeout = @read_timeout
@socket.continue_timeout = @continue_timeout
@socket.debug_output = @debug_output
if use_ssl?
begin
if proxy?
buf = "CONNECT #{@address}:#{@port} HTTP/#{HTTPVersion}\r\n"
buf << "Host: #{@address}:#{@port}\r\n"
if proxy_user
credential = ["#{proxy_user}:#{proxy_pass}"].pack('m')
credential.delete!("\r\n")
buf << "Proxy-Authorization: Basic #{credential}\r\n"
end
buf << "\r\n"
@socket.write(buf)
HTTPResponse.read_new(@socket).value
end
s.session = @ssl_session if @ssl_session
# Server Name Indication (SNI) RFC 3546
s.hostname = @address if s.respond_to? :hostname=
Timeout.timeout(@open_timeout, Net::OpenTimeout) { s.connect }
if @ssl_context.verify_mode != OpenSSL::SSL::VERIFY_NONE
s.post_connection_check(@address)
end
@ssl_session = s.session
rescue => exception
D "Conn close because of connect error #{exception}"
@socket.close if @socket and not @socket.closed?
raise exception
end
end
on_connect
end
private :connect
def on_connect
end
private :on_connect
# Finishes the HTTP session and closes the TCP connection.
# Raises IOError if the session has not been started.
def finish
raise IOError, 'HTTP session not yet started' unless started?
do_finish
end
def do_finish
@started = false
@socket.close if @socket and not @socket.closed?
@socket = nil
end
private :do_finish
#
# proxy
#
public
# no proxy
@is_proxy_class = false
@proxy_from_env = false
@proxy_addr = nil
@proxy_port = nil
@proxy_user = nil
@proxy_pass = nil
# Creates an HTTP proxy class which behaves like Net::HTTP, but
# performs all access via the specified proxy.
#
# This class is obsolete. You may pass these same parameters directly to
# Net::HTTP.new. See Net::HTTP.new for details of the arguments.
def HTTP.Proxy(p_addr = :ENV, p_port = nil, p_user = nil, p_pass = nil)
return self unless p_addr
Class.new(self) {
@is_proxy_class = true
if p_addr == :ENV then
@proxy_from_env = true
@proxy_address = nil
@proxy_port = nil
else
@proxy_from_env = false
@proxy_address = p_addr
@proxy_port = p_port || default_port
end
@proxy_user = p_user
@proxy_pass = p_pass
}
end
class << HTTP
# returns true if self is a class which was created by HTTP::Proxy.
def proxy_class?
defined?(@is_proxy_class) ? @is_proxy_class : false
end
# Address of proxy host. If Net::HTTP does not use a proxy, nil.
attr_reader :proxy_address
# Port number of proxy host. If Net::HTTP does not use a proxy, nil.
attr_reader :proxy_port
# User name for accessing proxy. If Net::HTTP does not use a proxy, nil.
attr_reader :proxy_user
# User password for accessing proxy. If Net::HTTP does not use a proxy,
# nil.
attr_reader :proxy_pass
end
# True if requests for this connection will be proxied
def proxy?
!!if @proxy_from_env then
proxy_uri
else
@proxy_address
end
end
# True if the proxy for this connection is determined from the environment
def proxy_from_env?
@proxy_from_env
end
# The proxy URI determined from the environment for this connection.
def proxy_uri # :nodoc:
@proxy_uri ||= URI("http://#{address}:#{port}").find_proxy
end
# The address of the proxy server, if one is configured.
def proxy_address
if @proxy_from_env then
proxy_uri && proxy_uri.hostname
else
@proxy_address
end
end
# The port of the proxy server, if one is configured.
def proxy_port
if @proxy_from_env then
proxy_uri && proxy_uri.port
else
@proxy_port
end
end
# The proxy username, if one is configured
def proxy_user
@proxy_user
end
# The proxy password, if one is configured
def proxy_pass
@proxy_pass
end
alias proxyaddr proxy_address #:nodoc: obsolete
alias proxyport proxy_port #:nodoc: obsolete
private
# without proxy, obsolete
def conn_address # :nodoc:
address()
end
def conn_port # :nodoc:
port()
end
def edit_path(path)
if proxy? and not use_ssl? then
"http://#{addr_port}#{path}"
else
path
end
end
#
# HTTP operations
#
public
# Retrieves data from +path+ on the connected-to host which may be an
# absolute path String or a URI to extract the path from.
#
# +initheader+ must be a Hash like { 'Accept' => '*/*', ... },
# and it defaults to an empty hash.
# If +initheader+ doesn't have the key 'accept-encoding', then
# a value of "gzip;q=1.0,deflate;q=0.6,identity;q=0.3" is used,
# so that gzip compression is used in preference to deflate
# compression, which is used in preference to no compression.
# Ruby doesn't have libraries to support the compress (Lempel-Ziv)
# compression, so that is not supported. The intent of this is
# to reduce bandwidth by default. If this routine sets up
# compression, then it does the decompression also, removing
# the header as well to prevent confusion. Otherwise
# it leaves the body as it found it.
#
# This method returns a Net::HTTPResponse object.
#
# If called with a block, yields each fragment of the
# entity body in turn as a string as it is read from
# the socket. Note that in this case, the returned response
# object will *not* contain a (meaningful) body.
#
# +dest+ argument is obsolete.
# It still works but you must not use it.
#
# This method never raises an exception.
#
# response = http.get('/index.html')
#
# # using block
# File.open('result.txt', 'w') {|f|
# http.get('/~foo/') do |str|
# f.write str
# end
# }
#
def get(path, initheader = {}, dest = nil, &block) # :yield: +body_segment+
res = nil
request(Get.new(path, initheader)) {|r|
r.read_body dest, &block
res = r
}
res
end
# Gets only the header from +path+ on the connected-to host.
# +header+ is a Hash like { 'Accept' => '*/*', ... }.
#
# This method returns a Net::HTTPResponse object.
#
# This method never raises an exception.
#
# response = nil
# Net::HTTP.start('some.www.server', 80) {|http|
# response = http.head('/index.html')
# }
# p response['content-type']
#
def head(path, initheader = nil)
request(Head.new(path, initheader))
end
# Posts +data+ (must be a String) to +path+. +header+ must be a Hash
# like { 'Accept' => '*/*', ... }.
#
# This method returns a Net::HTTPResponse object.
#
# If called with a block, yields each fragment of the
# entity body in turn as a string as it is read from
# the socket. Note that in this case, the returned response
# object will *not* contain a (meaningful) body.
#
# +dest+ argument is obsolete.
# It still works but you must not use it.
#
# This method never raises exception.
#
# response = http.post('/cgi-bin/search.rb', 'query=foo')
#
# # using block
# File.open('result.txt', 'w') {|f|
# http.post('/cgi-bin/search.rb', 'query=foo') do |str|
# f.write str
# end
# }
#
# You should set Content-Type: header field for POST.
# If no Content-Type: field given, this method uses
# "application/x-www-form-urlencoded" by default.
#
def post(path, data, initheader = nil, dest = nil, &block) # :yield: +body_segment+
send_entity(path, data, initheader, dest, Post, &block)
end
# Sends a PATCH request to the +path+ and gets a response,
# as an HTTPResponse object.
def patch(path, data, initheader = nil, dest = nil, &block) # :yield: +body_segment+
send_entity(path, data, initheader, dest, Patch, &block)
end
def put(path, data, initheader = nil) #:nodoc:
request(Put.new(path, initheader), data)
end
# Sends a PROPPATCH request to the +path+ and gets a response,
# as an HTTPResponse object.
def proppatch(path, body, initheader = nil)
request(Proppatch.new(path, initheader), body)
end
# Sends a LOCK request to the +path+ and gets a response,
# as an HTTPResponse object.
def lock(path, body, initheader = nil)
request(Lock.new(path, initheader), body)
end
# Sends a UNLOCK request to the +path+ and gets a response,
# as an HTTPResponse object.
def unlock(path, body, initheader = nil)
request(Unlock.new(path, initheader), body)
end
# Sends a OPTIONS request to the +path+ and gets a response,
# as an HTTPResponse object.
def options(path, initheader = nil)
request(Options.new(path, initheader))
end
# Sends a PROPFIND request to the +path+ and gets a response,
# as an HTTPResponse object.
def propfind(path, body = nil, initheader = {'Depth' => '0'})
request(Propfind.new(path, initheader), body)
end
# Sends a DELETE request to the +path+ and gets a response,
# as an HTTPResponse object.
def delete(path, initheader = {'Depth' => 'Infinity'})
request(Delete.new(path, initheader))
end
# Sends a MOVE request to the +path+ and gets a response,
# as an HTTPResponse object.
def move(path, initheader = nil)
request(Move.new(path, initheader))
end
# Sends a COPY request to the +path+ and gets a response,
# as an HTTPResponse object.
def copy(path, initheader = nil)
request(Copy.new(path, initheader))
end
# Sends a MKCOL request to the +path+ and gets a response,
# as an HTTPResponse object.
def mkcol(path, body = nil, initheader = nil)
request(Mkcol.new(path, initheader), body)
end
# Sends a TRACE request to the +path+ and gets a response,
# as an HTTPResponse object.
def trace(path, initheader = nil)
request(Trace.new(path, initheader))
end
# Sends a GET request to the +path+.
# Returns the response as a Net::HTTPResponse object.
#
# When called with a block, passes an HTTPResponse object to the block.
# The body of the response will not have been read yet;
# the block can process it using HTTPResponse#read_body,
# if desired.
#
# Returns the response.
#
# This method never raises Net::* exceptions.
#
# response = http.request_get('/index.html')
# # The entity body is already read in this case.
# p response['content-type']
# puts response.body
#
# # Using a block
# http.request_get('/index.html') {|response|
# p response['content-type']
# response.read_body do |str| # read body now
# print str
# end
# }
#
def request_get(path, initheader = nil, &block) # :yield: +response+
request(Get.new(path, initheader), &block)
end
# Sends a HEAD request to the +path+ and returns the response
# as a Net::HTTPResponse object.
#
# Returns the response.
#
# This method never raises Net::* exceptions.
#
# response = http.request_head('/index.html')
# p response['content-type']
#
def request_head(path, initheader = nil, &block)
request(Head.new(path, initheader), &block)
end
# Sends a POST request to the +path+.
#
# Returns the response as a Net::HTTPResponse object.
#
# When called with a block, the block is passed an HTTPResponse
# object. The body of that response will not have been read yet;
# the block can process it using HTTPResponse#read_body, if desired.
#
# Returns the response.
#
# This method never raises Net::* exceptions.
#
# # example
# response = http.request_post('/cgi-bin/nice.rb', 'datadatadata...')
# p response.status
# puts response.body # body is already read in this case
#
# # using block
# http.request_post('/cgi-bin/nice.rb', 'datadatadata...') {|response|
# p response.status
# p response['content-type']
# response.read_body do |str| # read body now
# print str
# end
# }
#
def request_post(path, data, initheader = nil, &block) # :yield: +response+
request Post.new(path, initheader), data, &block
end
def request_put(path, data, initheader = nil, &block) #:nodoc:
request Put.new(path, initheader), data, &block
end
alias get2 request_get #:nodoc: obsolete
alias head2 request_head #:nodoc: obsolete
alias post2 request_post #:nodoc: obsolete
alias put2 request_put #:nodoc: obsolete
# Sends an HTTP request to the HTTP server.
# Also sends a DATA string if +data+ is given.
#
# Returns a Net::HTTPResponse object.
#
# This method never raises Net::* exceptions.
#
# response = http.send_request('GET', '/index.html')
# puts response.body
#
def send_request(name, path, data = nil, header = nil)
r = HTTPGenericRequest.new(name,(data ? true : false),true,path,header)
request r, data
end
# Sends an HTTPRequest object +req+ to the HTTP server.
#
# If +req+ is a Net::HTTP::Post or Net::HTTP::Put request containing
# data, the data is also sent. Providing data for a Net::HTTP::Head or
# Net::HTTP::Get request results in an ArgumentError.
#
# Returns an HTTPResponse object.
#
# When called with a block, passes an HTTPResponse object to the block.
# The body of the response will not have been read yet;
# the block can process it using HTTPResponse#read_body,
# if desired.
#
# This method never raises Net::* exceptions.
#
def request(req, body = nil, &block) # :yield: +response+
unless started?
start {
req['connection'] ||= 'close'
return request(req, body, &block)
}
end
if proxy_user()
req.proxy_basic_auth proxy_user(), proxy_pass() unless use_ssl?
end
req.set_body_internal body
res = transport_request(req, &block)
if sspi_auth?(res)
sspi_auth(req)
res = transport_request(req, &block)
end
res
end
private
# Executes a request which uses a representation
# and returns its body.
def send_entity(path, data, initheader, dest, type, &block)
res = nil
request(type.new(path, initheader), data) {|r|
r.read_body dest, &block
res = r
}
res
end
IDEMPOTENT_METHODS_ = %w/GET HEAD PUT DELETE OPTIONS TRACE/ # :nodoc:
def transport_request(req)
count = 0
begin
begin_transport req
res = catch(:response) {
req.exec @socket, @curr_http_version, edit_path(req.path)
begin
res = HTTPResponse.read_new(@socket)
res.decode_content = req.decode_content
end while res.kind_of?(HTTPContinue)
res.uri = req.uri
res.reading_body(@socket, req.response_body_permitted?) {
yield res if block_given?
}
res
}
rescue Net::OpenTimeout
raise
rescue Net::ReadTimeout, IOError, EOFError,
Errno::ECONNRESET, Errno::ECONNABORTED, Errno::EPIPE,
# avoid a dependency on OpenSSL
defined?(OpenSSL::SSL) ? OpenSSL::SSL::SSLError : IOError,
Timeout::Error => exception
if count == 0 && IDEMPOTENT_METHODS_.include?(req.method)
count += 1
@socket.close if @socket and not @socket.closed?
D "Conn close because of error #{exception}, and retry"
retry
end
D "Conn close because of error #{exception}"
@socket.close if @socket and not @socket.closed?
raise
end
end_transport req, res
res
rescue => exception
D "Conn close because of error #{exception}"
@socket.close if @socket and not @socket.closed?
raise exception
end
def begin_transport(req)
if @socket.closed?
connect
elsif @last_communicated && @last_communicated + @keep_alive_timeout < Time.now
D 'Conn close because of keep_alive_timeout'
@socket.close
connect
end
if not req.response_body_permitted? and @close_on_empty_response
req['connection'] ||= 'close'
end
host = req['host'] || address
host = $1 if host =~ /(.*):\d+$/
req.update_uri host, port, use_ssl?
req['host'] ||= addr_port()
end
def end_transport(req, res)
@curr_http_version = res.http_version
@last_communicated = nil
if @socket.closed?
D 'Conn socket closed'
elsif not res.body and @close_on_empty_response
D 'Conn close'
@socket.close
elsif keep_alive?(req, res)
D 'Conn keep-alive'
@last_communicated = Time.now
else
D 'Conn close'
@socket.close
end
end
def keep_alive?(req, res)
return false if req.connection_close?
if @curr_http_version <= '1.0'
res.connection_keep_alive?
else # HTTP/1.1 or later
not res.connection_close?
end
end
def sspi_auth?(res)
return false unless @sspi_enabled
if res.kind_of?(HTTPProxyAuthenticationRequired) and
proxy? and res["Proxy-Authenticate"].include?("Negotiate")
begin
require 'win32/sspi'
true
rescue LoadError
false
end
else
false
end
end
def sspi_auth(req)
n = Win32::SSPI::NegotiateAuth.new
req["Proxy-Authorization"] = "Negotiate #{n.get_initial_token}"
# Some versions of ISA will close the connection if this isn't present.
req["Connection"] = "Keep-Alive"
req["Proxy-Connection"] = "Keep-Alive"
res = transport_request(req)
authphrase = res["Proxy-Authenticate"] or return res
req["Proxy-Authorization"] = "Negotiate #{n.complete_authentication(authphrase)}"
rescue => err
raise HTTPAuthenticationError.new('HTTP authentication failed', err)
end
#
# utils
#
private
def addr_port
if use_ssl?
address() + (port == HTTP.https_default_port ? '' : ":#{port()}")
else
address() + (port == HTTP.http_default_port ? '' : ":#{port()}")
end
end
def D(msg)
return unless @debug_output
@debug_output << msg
@debug_output << "\n"
end
end
end
require 'net/http/exceptions'
require 'net/http/header'
require 'net/http/generic_request'
require 'net/http/request'
require 'net/http/requests'
require 'net/http/response'
require 'net/http/responses'
require 'net/http/proxy_delta'
require 'net/http/backward'
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