Module: Excon

Defined in:
lib/excon.rb,
lib/excon/error.rb,
lib/excon/utils.rb,
lib/excon/socket.rb,
lib/excon/headers.rb,
lib/excon/version.rb,
lib/excon/response.rb,
lib/excon/constants.rb,
lib/excon/connection.rb,
lib/excon/ssl_socket.rb,
lib/excon/test/server.rb,
lib/excon/unix_socket.rb,
lib/excon/pretty_printer.rb,
lib/excon/middlewares/base.rb,
lib/excon/middlewares/mock.rb,
lib/excon/middlewares/expects.rb,
lib/excon/middlewares/decompress.rb,
lib/excon/middlewares/idempotent.rb,
lib/excon/middlewares/escape_path.rb,
lib/excon/test/plugin/server/exec.rb,
lib/excon/test/plugin/server/puma.rb,
lib/excon/middlewares/instrumentor.rb,
lib/excon/test/plugin/server/unicorn.rb,
lib/excon/test/plugin/server/webrick.rb,
lib/excon/middlewares/capture_cookies.rb,
lib/excon/middlewares/response_parser.rb,
lib/excon/middlewares/redirect_follower.rb,
lib/excon/instrumentors/logging_instrumentor.rb,
lib/excon/instrumentors/standard_instrumentor.rb

Overview

Define defaults first so they will be available to other files

Defined Under Namespace

Modules: Errors, Middleware, Test, Utils Classes: Connection, Error, Headers, LoggingInstrumentor, PrettyPrinter, Response, SSLSocket, Socket, StandardInstrumentor, UnixSocket

Constant Summary collapse

VERSION =
'0.66.0'
CR_NL =
"\r\n"
DEFAULT_CA_FILE =
File.expand_path(File.join(File.dirname(__FILE__), "..", "..", "data", "cacert.pem"))
DEFAULT_CHUNK_SIZE =

1 megabyte

1048576
CHUNK_SIZE =
DEFAULT_CHUNK_SIZE
DEFAULT_REDIRECT_LIMIT =
10
DEFAULT_RETRY_LIMIT =
4
DEFAULT_RETRY_ERRORS =
[
  Excon::Error::Timeout,
  Excon::Error::Socket,
  Excon::Error::HTTPStatus
]
FORCE_ENC =
CR_NL.respond_to?(:force_encoding)
HTTP_1_1 =
" HTTP/1.1\r\n"
HTTP_VERBS =
%w{connect delete get head options patch post put trace}
HTTPS =
'https'
NO_ENTITY =
[204, 205, 304].freeze
REDACTED =
'REDACTED'
UNIX =
'unix'
USER_AGENT =
"excon/#{VERSION}"
VERSIONS =
"#{USER_AGENT} (#{RUBY_PLATFORM}) ruby/#{RUBY_VERSION}"
VALID_REQUEST_KEYS =
[
  :allow_unstubbed_requests,
  :body,
  :chunk_size,
  :debug_request,
  :debug_response,
  :headers,
  :instrumentor, # Used for setting logging within Connection
  :logger,
  :method,
  :middlewares,
  :password,
  :path,
  :persistent,
  :pipeline,
  :query,
  :read_timeout,
  :request_block,
  :response_block,
  :stubs,
  :user,
  :versions,
  :write_timeout
]
VALID_CONNECTION_KEYS =
VALID_REQUEST_KEYS + [
  :ciphers,
  :client_key,
  :client_key_data,
  :client_key_pass,
  :client_cert,
  :client_cert_data,
  :certificate,
  :certificate_path,
  :disable_proxy,
  :private_key,
  :private_key_path,
  :connect_timeout,
  :family,
  :keepalive,
  :host,
  :hostname,
  :omit_default_port,
  :nonblock,
  :reuseaddr,
  :port,
  :proxy,
  :scheme,
  :socket,
  :ssl_ca_file,
  :ssl_ca_path,
  :ssl_cert_store,
  :ssl_verify_callback,
  :ssl_verify_peer,
  :ssl_verify_peer_host,
  :ssl_version,
  :ssl_min_version,
  :ssl_max_version,
  :ssl_uri_schemes,
  :tcp_nodelay,
  :thread_safe_sockets,
  :uri_parser,
]
DEPRECATED_VALID_REQUEST_KEYS =
{
  :captures => 'Mock',
  :expects => 'Expects',
  :idempotent => 'Idempotent',
  :instrumentor_name => 'Instrumentor',
  :mock => 'Mock',
  :retries_remaining => 'Idempotent', # referenced in Instrumentor, but only relevant with Idempotent
  :retry_errors => 'Idempotent',
  :retry_interval => 'Idempotent',
  :retry_limit => 'Idempotent' # referenced in Instrumentor, but only relevant with Idempotent
}
DEFAULTS =

these come last as they rely on the above

{
  :chunk_size           => CHUNK_SIZE || DEFAULT_CHUNK_SIZE,
  # see https://wiki.mozilla.org/Security/Server_Side_TLS#Intermediate_compatibility_.28default.29
  # list provided then had DES related things sorted to the end
  :ciphers              => 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:DES-CBC3-SHA:!DSS',
  :connect_timeout      => 60,
  :debug_request        => false,
  :debug_response       => false,
  :headers              => {
    'User-Agent' => USER_AGENT,
    'Accept'     =>  '*/*'
  },
  :idempotent           => false,
  :instrumentor_name    => 'excon',
  :middlewares          => [
    Excon::Middleware::ResponseParser,
    Excon::Middleware::Expects,
    Excon::Middleware::Idempotent,
    Excon::Middleware::Instrumentor,
    Excon::Middleware::Mock
  ],
  :mock                 => false,
  :nonblock             => true,
  :omit_default_port    => false,
  :persistent           => false,
  :read_timeout         => 60,
  :retry_errors         => DEFAULT_RETRY_ERRORS,
  :retry_limit          => DEFAULT_RETRY_LIMIT,
  :ssl_verify_peer      => true,
  :ssl_uri_schemes      => [HTTPS],
  :stubs                => :global,
  :tcp_nodelay          => false,
  :thread_safe_sockets  => true,
  :uri_parser           => URI,
  :versions             => VERSIONS,
  :write_timeout        => 60
}

Class Method Summary collapse

Class Method Details

.defaultsHash

Returns defaults for Excon connections

Returns:

  • (Hash)

    defaults for Excon connections


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# File 'lib/excon.rb', line 49

def defaults
  @defaults ||= DEFAULTS
end

.defaults=(new_defaults) ⇒ Hash

Change defaults for Excon connections

Returns:

  • (Hash)

    defaults for Excon connections


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# File 'lib/excon.rb', line 55

def defaults=(new_defaults)
  @defaults = new_defaults
end

.display_warning(warning) ⇒ Object


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# File 'lib/excon.rb', line 59

def display_warning(warning)
  # Show warning if $VERBOSE or ENV['EXCON_DEBUG'] is set
  if $VERBOSE || ENV['EXCON_DEBUG']
    $stderr.puts "[excon][WARNING] #{warning}\n#{ caller.join("\n") }"
  end

  if @raise_on_warnings
    raise Error::Warning.new(warning)
  end
end

.mockObject

Status of mocking


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# File 'lib/excon.rb', line 75

def mock
  display_warning('Excon#mock is deprecated, use Excon.defaults[:mock] instead.')
  self.defaults[:mock]
end

.mock=(new_mock) ⇒ Object

Change the status of mocking false is the default and works as expected true returns a value from stubs or raises


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# File 'lib/excon.rb', line 83

def mock=(new_mock)
  display_warning('Excon#mock is deprecated, use Excon.defaults[:mock]= instead.')
  self.defaults[:mock] = new_mock
end

.new(url, params = {}) ⇒ Connection

Initializes a new keep-alive session for a given remote host

Parameters:

  • url (String)

    The destination URL

  • params (Hash<Symbol, >) (defaults to: {})

    One or more option params to set on the Connection instance

Returns:

  • (Connection)

    A new Excon::Connection instance

See Also:


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# File 'lib/excon.rb', line 119

def new(url, params = {})
  uri_parser = params[:uri_parser] || defaults[:uri_parser]
  uri = uri_parser.parse(url)
  if params[:path]
    uri_parser.parse(params[:path])
  end
  unless uri.scheme
    raise ArgumentError.new("Invalid URI: #{uri}")
  end
  params = {
    :host       => uri.host,
    :hostname   => uri.hostname,
    :path       => uri.path,
    :port       => uri.port,
    :query      => uri.query,
    :scheme     => uri.scheme
  }.merge(params)
  if uri.password
    params[:password] = Utils.unescape_uri(uri.password)
  end
  if uri.user
    params[:user] = Utils.unescape_uri(uri.user)
  end
  Excon::Connection.new(params)
end

.set_raise_on_warnings!(should_raise) ⇒ Object


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# File 'lib/excon.rb', line 70

def set_raise_on_warnings!(should_raise)
  @raise_on_warnings = should_raise
end

.ssl_ca_pathString

Returns The filesystem path to the SSL Certificate Authority

Returns:

  • (String)

    The filesystem path to the SSL Certificate Authority


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# File 'lib/excon.rb', line 89

def ssl_ca_path
  display_warning('Excon#ssl_ca_path is deprecated, use Excon.defaults[:ssl_ca_path] instead.')
  self.defaults[:ssl_ca_path]
end

.ssl_ca_path=(new_ssl_ca_path) ⇒ String

Change path to the SSL Certificate Authority

Returns:

  • (String)

    The filesystem path to the SSL Certificate Authority


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# File 'lib/excon.rb', line 96

def ssl_ca_path=(new_ssl_ca_path)
  display_warning('Excon#ssl_ca_path= is deprecated, use Excon.defaults[:ssl_ca_path]= instead.')
  self.defaults[:ssl_ca_path] = new_ssl_ca_path
end

.ssl_verify_peertrue, false

Returns Whether or not to verify the peer's SSL certificate / chain

Returns:

  • (true, false)

    Whether or not to verify the peer's SSL certificate / chain


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# File 'lib/excon.rb', line 102

def ssl_verify_peer
  display_warning('Excon#ssl_verify_peer is deprecated, use Excon.defaults[:ssl_verify_peer] instead.')
  self.defaults[:ssl_verify_peer]
end

.ssl_verify_peer=(new_ssl_verify_peer) ⇒ Object

Change the status of ssl peer verification

See Also:


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# File 'lib/excon.rb', line 109

def ssl_verify_peer=(new_ssl_verify_peer)
  display_warning('Excon#ssl_verify_peer= is deprecated, use Excon.defaults[:ssl_verify_peer]= instead.')
  self.defaults[:ssl_verify_peer] = new_ssl_verify_peer
end

.stub(request_params = {}, response_params = nil, &block) ⇒ Object

push an additional stub onto the list to check for mock requests

Parameters:

  • request_params (Hash<Symbol, >) (defaults to: {})

    request params to match against, omitted params match all

  • response_params (Hash<Symbol, >) (defaults to: nil)

    response params to return from matched request or block to call with params


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# File 'lib/excon.rb', line 148

def stub(request_params = {}, response_params = nil, &block)
  if method = request_params.delete(:method)
    request_params[:method] = method.to_s.downcase.to_sym
  end
  if url = request_params.delete(:url)
    uri = URI.parse(url)
    request_params = {
      :host              => uri.host,
      :path              => uri.path,
      :port              => uri.port,
      :query             => uri.query,
      :scheme            => uri.scheme
    }.merge!(request_params)
    if uri.user || uri.password
      request_params[:headers] ||= {}
      user, pass = Utils.unescape_form(uri.user.to_s), Utils.unescape_form(uri.password.to_s)
      request_params[:headers]['Authorization'] ||= 'Basic ' + ["#{user}:#{pass}"].pack('m').delete(Excon::CR_NL)
    end
  end
  if request_params.has_key?(:headers)
    headers = Excon::Headers.new
    request_params[:headers].each do |key, value|
      headers[key] = value
    end
    request_params[:headers] = headers
  end
  if block_given?
    if response_params
      raise(ArgumentError.new("stub requires either response_params OR a block"))
    else
      stub = [request_params, block]
    end
  elsif response_params
    stub = [request_params, response_params]
  else
    raise(ArgumentError.new("stub requires either response_params OR a block"))
  end
  stubs.unshift(stub)
  stub
end

.stub_for(request_params = {}) ⇒ Hash<Symbol, >

get a stub matching params or nil

Parameters:

  • request_params (Hash<Symbol, >) (defaults to: {})

    request params to match against, omitted params match all

Returns:

  • (Hash<Symbol, >)

    response params to return from matched request or block to call with params


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# File 'lib/excon.rb', line 192

def stub_for(request_params={})
  if method = request_params.delete(:method)
    request_params[:method] = method.to_s.downcase.to_sym
  end
  Excon.stubs.each do |stub, response_params|
    captures = { :headers => {} }
    headers_match = !stub.has_key?(:headers) || stub[:headers].keys.all? do |key|
      case value = stub[:headers][key]
      when Regexp
        if match = value.match(request_params[:headers][key])
          captures[:headers][key] = match.captures
        end
        match
      else
        value == request_params[:headers][key]
      end
    end
    non_headers_match = (stub.keys - [:headers]).all? do |key|
      case value = stub[key]
      when Regexp
        if match = value.match(request_params[key])
          captures[key] = match.captures
        end
        match
      else
        value == request_params[key]
      end
    end
    if headers_match && non_headers_match
      request_params[:captures] = captures
      return [stub, response_params]
    end
  end
  nil
end

.stubsObject

get a list of defined stubs


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# File 'lib/excon.rb', line 229

def stubs
  case Excon.defaults[:stubs]
  when :global
    @stubs ||= []
  when :local
    Thread.current[:_excon_stubs] ||= []
  end
end

.unstub(request_params = {}) ⇒ Hash<Symbol, >

remove first/oldest stub matching request_params

Parameters:

  • request_params (Hash<Symbol, >) (defaults to: {})

    request params to match against, omitted params match all

Returns:

  • (Hash<Symbol, >)

    response params from deleted stub


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# File 'lib/excon.rb', line 241

def unstub(request_params = {})
  stub = stub_for(request_params)
  Excon.stubs.delete_at(Excon.stubs.index(stub))
end