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* ext/socket/lib/socket.rb (BasicSocket#connect_address): new method.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22649 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2009-02-26 14:15:39 +00:00
parent cbc7f1b89b
commit ecb22ce2c5
4 changed files with 47 additions and 15 deletions
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40
ext/socket/lib/socket.rb
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@ -158,6 +158,46 @@ class Addrinfo
end
end
class BasicSocket
# Returns an address of the socket suitable for connect.
#
# This method returns _self_.local_address, except following condition.
#
# - IPv4 unspecified address (0.0.0.0) is replaced by IPv4 loopback address (127.0.0.1).
# - IPv6 unspecified address (::) is replaced by IPv6 loopback address (::1).
#
# If the local address is not suitable for connect, SocketError is raised.
# IPv4 and IPv6 address which port is 0 is not suitable for connect.
# Unix domain socket which has no path is not suitable for connect.
#
# Addrinfo.tcp("0.0.0.0", 0).listen {|serv|
# p serv.connect_address #=> #<Addrinfo: 127.0.0.1:53660 TCP>
# serv.connect_address.connect {|c|
# s, _ = serv.accept
# p [c, s] #=> [#<Socket:fd 4>, #<Socket:fd 6>]
# }
# }
#
def connect_address
addr = local_address
afamily = addr.afamily
if afamily == Socket::AF_INET
raise SocketError, "unbound IPv4 socket" if addr.ip_port == 0
if addr.ip_address == "0.0.0.0"
addr = Addrinfo.new(["AF_INET", addr.ip_port, nil, "127.0.0.1"], addr.pfamily, addr.socktype, addr.protocol)
end
elsif defined?(Socket::AF_INET6) && afamily == Socket::AF_INET6
raise SocketError, "unbound IPv6 socket" if addr.ip_port == 0
if addr.ip_address == "::"
addr = Addrinfo.new(["AF_INET6", addr.ip_port, nil, "::1"], addr.pfamily, addr.socktype, addr.protocol)
end
elsif defined?(Socket::AF_UNIX) && afamily == Socket::AF_UNIX
raise SocketError, "unbound Unix socket" if addr.unix_path == ""
end
addr
end
end
class Socket
# enable the socket option IPV6_V6ONLY if IPV6_V6ONLY is available.
def ipv6only!