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 = 
'1.2.2'
CR_NL = 
"\r\n"
DEFAULT_CA_FILE = 
File.expand_path(File.join(File.dirname(__FILE__), '..', '..', 'data', 'cacert.pem'))
DEFAULT_CHUNK_SIZE =

1 megabyte

1_048_576
CHUNK_SIZE =

avoid overwrite if somebody has redefined

DEFAULT_CHUNK_SIZE
DEFAULT_REDIRECT_LIMIT = 
10
DEFAULT_RETRY_LIMIT = 
4
DEFAULT_RETRY_ERRORS = 
[
  Excon::Error::RequestTimeout,
  Excon::Error::Server,
  Excon::Error::Socket,
  Excon::Error::Timeout,
  Excon::Error::TooManyRequests
].freeze
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].freeze
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 = 
%i[
  allow_unstubbed_requests
  body
  chunk_size
  debug_request
  debug_response
  dns_timeouts
  headers
  instrumentor
  logger
  method
  middlewares
  password
  path
  persistent
  pipeline
  query
  read_timeout
  request_block
  resolv_resolver
  response_block
  stubs
  timeout
  user
  versions
  write_timeout
].freeze
VALID_CONNECTION_KEYS = 
VALID_REQUEST_KEYS + %i[
  ciphers
  client_key
  client_key_data
  client_key_pass
  client_cert
  client_cert_data
  client_chain
  client_chain_data
  certificate
  certificate_path
  disable_proxy
  private_key
  private_key_path
  connect_timeout
  family
  keepalive
  host
  hostname
  include_default_port
  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_verify_hostname
  ssl_version
  ssl_min_version
  ssl_max_version
  ssl_security_level
  ssl_proxy_headers
  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
}.freeze
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,
  dns_timeouts: nil, # nil allows Resolv::DNS default timeout value (see https://ruby-doc.org/3.2.2/stdlibs/resolv/Resolv/DNS.html#method-i-timeouts-3D)
  headers: {
    'User-Agent' => USER_AGENT,
    'Accept' => '*/*'
  },
  idempotent: false,
  instrumentor_name: 'excon',
  middlewares: [
    Excon::Middleware::ResponseParser,
    Excon::Middleware::Decompress,
    Excon::Middleware::Expects,
    Excon::Middleware::Idempotent,
    Excon::Middleware::Instrumentor,
    Excon::Middleware::Mock
  ],
  mock: false,
  include_default_port: false,
  nonblock: true,
  omit_default_port: true,
  persistent: false,
  read_timeout: 60,
  resolv_resolver: nil,
  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,
  timeout: nil,
  uri_parser: URI,
  versions: VERSIONS,
  write_timeout: 60
}

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.defaults ⇒ Hash

Returns defaults for Excon connections.

Returns:

  • (Hash) —

    defaults for Excon connections



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# File 'lib/excon.rb', line 50

def defaults
  @defaults ||= DEFAULTS
end

Class Method Details

.display_warning(warning) ⇒ Object

Raises:



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# File 'lib/excon.rb', line 58

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

  return unless @raise_on_warnings

  raise(Error::Warning, warning)
end

.mock ⇒ Object

Status of mocking



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# File 'lib/excon.rb', line 72

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 80

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

Raises:

  • (ArgumentError)

See Also:



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# File 'lib/excon.rb', line 116

def new(url, params = {})
  uri_parser = params[:uri_parser] || defaults[:uri_parser]
  uri = uri_parser.parse(url)
  params[:path] && uri_parser.parse(params[:path])
  raise(ArgumentError, "Invalid URI: #{uri}") unless uri.scheme

  params = {
    host: uri.host,
    hostname: uri.hostname,
    path: uri.path,
    port: uri.port,
    query: uri.query,
    scheme: uri.scheme
  }.merge(params)
  uri.password && params[:password] = Utils.unescape_uri(uri.password)
  uri.user && params[:user] = Utils.unescape_uri(uri.user)
  Excon::Connection.new(params)
end

.set_raise_on_warnings!(should_raise) ⇒ Object 



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# File 'lib/excon.rb', line 67

def set_raise_on_warnings!(should_raise)
  @raise_on_warnings = should_raise
end

.ssl_ca_path ⇒ String

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 86

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 93

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_peer ⇒ true, 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 99

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 106

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 or block to call with matched params



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# File 'lib/excon.rb', line 138

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.empty? ? '/' : uri.path,
      port: uri.port,
      query: uri.query,
      scheme: uri.scheme
    }.merge!(request_params)
    if uri.user || uri.password
      request_params[:headers] ||= {}
      user = Utils.unescape_form(uri.user.to_s)
      pass = 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.key?(:headers)
    headers = Excon::Headers.new
    request_params[:headers].each do |key, value|
      headers[key] = value
    end
    request_params[:headers] = headers
  end
  request_params[:query] = Utils.query_string(request_params)[1...] if request_params.key?(:query)
  if block_given?
    raise(ArgumentError, 'stub requires either response_params OR a block') if response_params

    stub = [request_params, block]
  elsif response_params
    stub = [request_params, response_params]
  else
    raise(ArgumentError, '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 182

def stub_for(request_params={})
  if (method = request_params.delete(:method))
    request_params[:method] = method.to_s.downcase.to_sym
  end
  request_params[:query] = Utils.query_string(request_params)[1...] if request_params.key?(:query)
  Excon.stubs.each do |stub, response_params|
    captures = { headers: {} }
    headers_match = !stub.key?(:headers) || stub[:headers].keys.all? do |key|
      case value = stub[:headers][key]
      when Regexp
        case request_params[:headers][key]
        when String
          if (match = value.match(request_params[:headers][key]))
            captures[:headers][key] = match.captures
          end
        when Regexp # for unstub on regex params
          match = (value == request_params[:headers][key])
        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
        case request_params[key]
        when String
          if (match = value.match(request_params[key]))
            captures[key] = match.captures
          end
        when Regexp # for unstub on regex params
          match = (value == request_params[key])
        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

.stubs ⇒ Object

get a list of defined stubs



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# File 'lib/excon.rb', line 230

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 or nil if none match

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 242

def unstub(request_params = {})
  return unless (stub = stub_for(request_params))

  Excon.stubs.delete_at(Excon.stubs.index(stub))
end