class IPSocket
Public Class Methods
Lookups the IP address of host.
IPSocket.getaddress("localhost") #=> "127.0.0.1" IPSocket.getaddress("ip6-localhost") #=> "::1"
static VALUE
ip_s_getaddress(VALUE obj, VALUE host)
{
struct sockaddr_storage addr;
struct addrinfo *res = rsock_addrinfo(host, Qnil, SOCK_STREAM, 0);
socklen_t len = res->ai_addrlen;
/* just take the first one */
memcpy(&addr, res->ai_addr, len);
freeaddrinfo(res);
return rsock_make_ipaddr((struct sockaddr*)&addr, len);
}
Private Class Methods
# File lib/ipaddr.rb, line 620 def valid_v6?(addr) case addr when IPAddr::RE_IPV6ADDRLIKE_FULL if $2 $~[2,4].all? {|i| i.to_i < 256 } else true end when IPAddr::RE_IPV6ADDRLIKE_COMPRESSED if $4 addr.count(':') <= 6 && $~[4,4].all? {|i| i.to_i < 256} else addr.count(':') <= 7 end else false end end
Public Instance Methods
Returns the local address as an array which contains address_family, port, hostname and numeric_address.
If reverse_lookup is true or
:hostname, hostname is obtained from numeric_address using
reverse lookup. Or if it is false, or :numeric,
hostname is same as numeric_address. Or if it is nil or
ommitted, obeys to ipsocket.do_not_reverse_lookup. See
Socket.getaddrinfo also.
TCPSocket.open("www.ruby-lang.org", 80) {|sock| p sock.addr #=> ["AF_INET", 49429, "hal", "192.168.0.128"] p sock.addr(true) #=> ["AF_INET", 49429, "hal", "192.168.0.128"] p sock.addr(false) #=> ["AF_INET", 49429, "192.168.0.128", "192.168.0.128"] p sock.addr(:hostname) #=> ["AF_INET", 49429, "hal", "192.168.0.128"] p sock.addr(:numeric) #=> ["AF_INET", 49429, "192.168.0.128", "192.168.0.128"] }
static VALUE
ip_addr(int argc, VALUE *argv, VALUE sock)
{
rb_io_t *fptr;
struct sockaddr_storage addr;
socklen_t len = (socklen_t)sizeof addr;
int norevlookup;
GetOpenFile(sock, fptr);
if (argc < 1 || !rsock_revlookup_flag(argv[0], &norevlookup))
norevlookup = fptr->mode & FMODE_NOREVLOOKUP;
if (getsockname(fptr->fd, (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail("getsockname(2)");
return rsock_ipaddr((struct sockaddr*)&addr, len, norevlookup);
}
Returns the remote address as an array which contains address_family, port, hostname and numeric_address. It is defined for connection oriented socket such as TCPSocket.
If reverse_lookup is true or
:hostname, hostname is obtained from numeric_address using
reverse lookup. Or if it is false, or :numeric,
hostname is same as numeric_address. Or if it is nil or
ommitted, obeys to ipsocket.do_not_reverse_lookup. See
Socket.getaddrinfo also.
TCPSocket.open("www.ruby-lang.org", 80) {|sock| p sock.peeraddr #=> ["AF_INET", 80, "carbon.ruby-lang.org", "221.186.184.68"] p sock.peeraddr(true) #=> ["AF_INET", 80, "carbon.ruby-lang.org", "221.186.184.68"] p sock.peeraddr(false) #=> ["AF_INET", 80, "221.186.184.68", "221.186.184.68"] p sock.peeraddr(:hostname) #=> ["AF_INET", 80, "carbon.ruby-lang.org", "221.186.184.68"] p sock.peeraddr(:numeric) #=> ["AF_INET", 80, "221.186.184.68", "221.186.184.68"] }
static VALUE
ip_peeraddr(int argc, VALUE *argv, VALUE sock)
{
rb_io_t *fptr;
struct sockaddr_storage addr;
socklen_t len = (socklen_t)sizeof addr;
int norevlookup;
GetOpenFile(sock, fptr);
if (argc < 1 || !rsock_revlookup_flag(argv[0], &norevlookup))
norevlookup = fptr->mode & FMODE_NOREVLOOKUP;
if (getpeername(fptr->fd, (struct sockaddr*)&addr, &len) < 0)
rb_sys_fail("getpeername(2)");
return rsock_ipaddr((struct sockaddr*)&addr, len, norevlookup);
}
Receives a message and return the message as a string and an address which the message come from.
maxlen is the maximum number of bytes to receive.
flags should be a bitwise OR of Socket::MSG_* constants.
ipaddr is same as IPSocket#{peeraddr,addr}.
u1 = UDPSocket.new u1.bind("127.0.0.1", 4913) u2 = UDPSocket.new u2.send "uuuu", 0, "127.0.0.1", 4913 p u1.recvfrom(10) #=> ["uuuu", ["AF_INET", 33230, "localhost", "127.0.0.1"]]
static VALUE
ip_recvfrom(int argc, VALUE *argv, VALUE sock)
{
return rsock_s_recvfrom(sock, argc, argv, RECV_IP);
}