Class: Excon::Connection
- Inherits:
-
Object
- Object
- Excon::Connection
- Defined in:
- lib/excon/connection.rb
Instance Attribute Summary collapse
-
#connection ⇒ Object
readonly
Returns the value of attribute connection.
-
#proxy ⇒ Object
readonly
Returns the value of attribute proxy.
Instance Method Summary collapse
-
#initialize(url, params = {}) ⇒ Connection
constructor
Initializes a new Connection instance @param [String] url The destination URL @param [Hash<Symbol, >] params One or more optional params @option params [String] :body Default text to be sent over a socket.
-
#request(params, &block) ⇒ Object
Sends the supplied request to the destination host.
- #reset ⇒ Object
- #retry_limit ⇒ Object
- #retry_limit=(new_retry_limit) ⇒ Object
Constructor Details
#initialize(url, params = {}) ⇒ Connection
Initializes a new Connection instance
@param [String] url The destination URL
@param [Hash<Symbol, >] params One or more optional params
@option params [String] :body Default text to be sent over a socket. Only used if :body absent in Connection#request params
@option params [Hash<Symbol, String>] :headers The default headers to supply in a request. Only used if params[:headers] is not supplied to Connection#request
@option params [String] :host The destination host's reachable DNS name or IP, in the form of a String
@option params [String] :path Default path; appears after 'scheme://host:port/'. Only used if params[:path] is not supplied to Connection#request
@option params [Fixnum] :port The port on which to connect, to the destination host
@option params [Hash] :query Default query; appended to the 'scheme://host:port/path/' in the form of '?key=value'. Will only be used if params[:query] is not supplied to Connection#request
@option params [String] :scheme The protocol; 'https' causes OpenSSL to be used
@option params [String] :proxy Proxy server; e.g. 'http://myproxy.com:8888'
@option params [Fixnum] :retry_limit Set how many times we'll retry a failed request. (Default 4)
@option params [Class] :instrumentor Responds to #instrument as in ActiveSupport::Notifications
@option params [String] :instrumentor_name Name prefix for #instrument events. Defaults to 'excon'
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# File 'lib/excon/connection.rb', line 19 def initialize(url, params = {}) uri = URI.parse(url) @connection = Excon.defaults.merge({ :host => uri.host, :path => uri.path, :port => uri.port.to_s, :query => uri.query, :scheme => uri.scheme, }).merge!(params) # merge does not deep-dup, so make sure headers is not the original @connection[:headers] = @connection[:headers].dup @proxy = nil # use proxy from the environment if present if (ENV.has_key?('http_proxy') || ENV.has_key?('HTTP_PROXY')) @proxy = setup_proxy(ENV['http_proxy'] || ENV['HTTP_PROXY']) elsif params.has_key?(:proxy) @proxy = setup_proxy(params[:proxy]) end # use https_proxy if that has been specified if @connection[:scheme] == HTTPS && (ENV.has_key?('https_proxy') || ENV.has_key?('HTTPS_PROXY')) @proxy = setup_proxy(ENV['https_proxy'] || ENV['HTTPS_PROXY']) end if @proxy @connection[:headers]['Proxy-Connection'] ||= 'Keep-Alive' # https credentials happen in handshake if @connection[:scheme] == 'http' && (@proxy[:user] || @proxy[:password]) auth = ['' << @proxy[:user].to_s << ':' << @proxy[:password].to_s].pack('m').delete(Excon::CR_NL) @connection[:headers]['Proxy-Authorization'] = 'Basic ' << auth << Excon::CR_NL end end if ENV.has_key?('EXCON_STANDARD_INSTRUMENTOR') @connection[:instrumentor] = Excon::StandardInstrumentor end # Use Basic Auth if url contains a login if uri.user || uri.password @connection[:headers]['Authorization'] ||= 'Basic ' << ['' << uri.user.to_s << ':' << uri.password.to_s].pack('m').delete(Excon::CR_NL) end @socket_key = '' << @connection[:host] << ':' << @connection[:port].to_s reset end |
Instance Attribute Details
#connection ⇒ Object (readonly)
Returns the value of attribute connection.
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# File 'lib/excon/connection.rb', line 3 def connection @connection end |
#proxy ⇒ Object (readonly)
Returns the value of attribute proxy.
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# File 'lib/excon/connection.rb', line 3 def proxy @proxy end |
Instance Method Details
#request(params, &block) ⇒ Object
Sends the supplied request to the destination host.
@yield [chunk] @see Response#self.parse
@param [Hash<Symbol, >] params One or more optional params, override defaults set in Connection.new
@option params [String] :body text to be sent over a socket
@option params [Hash<Symbol, String>] :headers The default headers to supply in a request
@option params [String] :host The destination host's reachable DNS name or IP, in the form of a String
@option params [String] :path appears after 'scheme://host:port/'
@option params [Fixnum] :port The port on which to connect, to the destination host
@option params [Hash] :query appended to the 'scheme://host:port/path/' in the form of '?key=value'
@option params [String] :scheme The protocol; 'https' causes OpenSSL to be used
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# File 'lib/excon/connection.rb', line 77 def request(params, &block) # connection has defaults, merge in new params to override params = @connection.merge(params) params[:headers] = @connection[:headers].merge(params[:headers] || {}) params[:headers]['Host'] ||= '' << params[:host] << ':' << params[:port] # if path is empty or doesn't start with '/', insert one unless params[:path][0, 1] == '/' params[:path].insert(0, '/') end if block_given? puts("Excon requests with a block are deprecated, pass :response_block instead (#{caller.first})") params[:response_block] = Proc.new end if params.has_key?(:instrumentor) if (retries_remaining ||= params[:retry_limit]) < params[:retry_limit] event_name = "#{params[:instrumentor_name]}.retry" else event_name = "#{params[:instrumentor_name]}.request" end response = params[:instrumentor].instrument(event_name, params) do request_kernel(params) end params[:instrumentor].instrument("#{params[:instrumentor_name]}.response", response.attributes) response else request_kernel(params) end rescue => request_error if params[:idempotent] && [Excon::Errors::SocketError, Excon::Errors::HTTPStatusError].any? {|ex| request_error.kind_of? ex } retries_remaining ||= params[:retry_limit] retries_remaining -= 1 if retries_remaining > 0 if params[:body].respond_to?(:pos=) params[:body].pos = 0 end retry else if params.has_key?(:instrumentor) params[:instrumentor].instrument("#{params[:instrumentor_name]}.error", :error => request_error) end raise(request_error) end else if params.has_key?(:instrumentor) params[:instrumentor].instrument("#{params[:instrumentor_name]}.error", :error => request_error) end raise(request_error) end end |
#reset ⇒ Object
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# File 'lib/excon/connection.rb', line 131 def reset (old_socket = sockets.delete(@socket_key)) && old_socket.close end |
#retry_limit ⇒ Object
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# File 'lib/excon/connection.rb', line 149 def retry_limit puts("Excon::Connection#retry_limit is deprecated, pass :retry_limit to the initializer (#{caller.first})") @connection[:retry_limit] ||= DEFAULT_RETRY_LIMIT end |
#retry_limit=(new_retry_limit) ⇒ Object
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# File 'lib/excon/connection.rb', line 144 def retry_limit=(new_retry_limit) puts("Excon::Connection#retry_limit= is deprecated, pass :retry_limit to the initializer (#{caller.first})") @connection[:retry_limit] = new_retry_limit end |