| Class | DRb::DRbTCPSocket |
| In: |
lib/drb/drb.rb
|
| Parent: | Object |
The default drb protocol.
Communicates over a TCP socket.
| uri | [R] | Get the URI that we are connected to. |
# File lib/drb/drb.rb, line 830
830: def self.getservername
831: host = Socket::gethostname
832: begin
833: Socket::gethostbyname(host)[0]
834: rescue
835: 'localhost'
836: end
837: end
Create a new DRbTCPSocket instance.
uri is the URI we are connected to. soc is the tcp socket we are bound to. config is our configuration.
# File lib/drb/drb.rb, line 883
883: def initialize(uri, soc, config={})
884: @uri = uri
885: @socket = soc
886: @config = config
887: @acl = config[:tcp_acl]
888: @msg = DRbMessage.new(config)
889: set_sockopt(@socket)
890: end
Open a client connection to uri using configuration config.
# File lib/drb/drb.rb, line 822
822: def self.open(uri, config)
823: host, port, option = parse_uri(uri)
824: host.untaint
825: port.untaint
826: soc = TCPSocket.open(host, port)
827: self.new(uri, soc, config)
828: end
Open a server listening for connections at uri using configuration config.
# File lib/drb/drb.rb, line 858
858: def self.open_server(uri, config)
859: uri = 'druby://:0' unless uri
860: host, port, opt = parse_uri(uri)
861: if host.size == 0
862: host = getservername
863: soc = open_server_inaddr_any(host, port)
864: else
865: soc = TCPServer.open(host, port)
866: end
867: port = soc.addr[1] if port == 0
868: uri = "druby://#{host}:#{port}"
869: self.new(uri, soc, config)
870: end
# File lib/drb/drb.rb, line 839
839: def self.open_server_inaddr_any(host, port)
840: infos = Socket::getaddrinfo(host, nil,
841: Socket::AF_UNSPEC,
842: Socket::SOCK_STREAM,
843: 0,
844: Socket::AI_PASSIVE)
845: family = infos.collect { |af, *_| af }.uniq
846: case family
847: when ['AF_INET']
848: return TCPServer.open('0.0.0.0', port)
849: when ['AF_INET6']
850: return TCPServer.open('::', port)
851: else
852: return TCPServer.open(port)
853: end
854: end
Parse uri into a [uri, option] pair.
# File lib/drb/drb.rb, line 873
873: def self.uri_option(uri, config)
874: host, port, option = parse_uri(uri)
875: return "druby://#{host}:#{port}", option
876: end
# File lib/drb/drb.rb, line 807
807: def self.parse_uri(uri)
808: if uri =~ /^druby:\/\/(.*?):(\d+)(\?(.*))?$/
809: host = $1
810: port = $2.to_i
811: option = $4
812: [host, port, option]
813: else
814: raise(DRbBadScheme, uri) unless uri =~ /^druby:/
815: raise(DRbBadURI, 'can\'t parse uri:' + uri)
816: end
817: end
On the server side, for an instance returned by open_server, accept a client connection and return a new instance to handle the server‘s side of this client-server session.
# File lib/drb/drb.rb, line 942
942: def accept
943: while true
944: s = @socket.accept
945: break if (@acl ? @acl.allow_socket?(s) : true)
946: s.close
947: end
948: self.class.new(nil, s, @config)
949: end
Check to see if this connection is alive.
# File lib/drb/drb.rb, line 952
952: def alive?
953: return false unless @socket
954: if IO.select([@socket], nil, nil, 0)
955: close
956: return false
957: end
958: true
959: end
Close the connection.
If this is an instance returned by open_server, then this stops listening for new connections altogether. If this is an instance returned by open or by accept, then it closes this particular client-server session.
# File lib/drb/drb.rb, line 932
932: def close
933: if @socket
934: @socket.close
935: @socket = nil
936: end
937: end
Get the address of our TCP peer (the other end of the socket we are bound to.
# File lib/drb/drb.rb, line 897
897: def peeraddr
898: @socket.peeraddr
899: end
On the client side, receive a reply from the server.
# File lib/drb/drb.rb, line 920
920: def recv_reply
921: @msg.recv_reply(stream)
922: end
On the server side, receive a request from the client.
# File lib/drb/drb.rb, line 910
910: def recv_request
911: @msg.recv_request(stream)
912: end
On the server side, send a reply to the client.
# File lib/drb/drb.rb, line 915
915: def send_reply(succ, result)
916: @msg.send_reply(stream, succ, result)
917: end