IPSocket 类
公有类方法
getaddress(host) → ipaddress 点击切换源代码
查找 host 的 IP 地址。
require 'socket' IPSocket.getaddress("localhost") #=> "127.0.0.1" IPSocket.getaddress("ip6-localhost") #=> "::1"
static VALUE ip_s_getaddress(VALUE obj, VALUE host) { union_sockaddr addr; struct rb_addrinfo *res = rsock_addrinfo(host, Qnil, AF_UNSPEC, SOCK_STREAM, 0); socklen_t len = res->ai->ai_addrlen; /* just take the first one */ memcpy(&addr, res->ai->ai_addr, len); rb_freeaddrinfo(res); return rsock_make_ipaddr(&addr.addr, len); }
私有类方法
getaddress_orig
别名:getaddress
valid_v6?(addr) 点击切换源代码
# File lib/ipaddr.rb, line 753 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
公有实例方法
addr([reverse_lookup]) → [address_family, port, hostname, numeric_address] 点击切换源代码
返回本地地址,以包含 address_family、port、hostname 和 numeric_address 的数组形式。
如果 reverse_lookup
为 true
或 :hostname
,则使用反向查找从 numeric_address 获取 hostname。如果为 false
或 :numeric
,则 hostname 与 numeric_address 相同。如果为 nil
或省略,则遵循 ipsocket.do_not_reverse_lookup
。另请参阅 Socket.getaddrinfo
。
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; union_sockaddr 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, &addr.addr, &len) < 0) rb_sys_fail("getsockname(2)"); return rsock_ipaddr(&addr.addr, len, norevlookup); }
inspect → string 点击切换源代码
返回描述此 IPSocket
对象的字符串。
static VALUE ip_inspect(VALUE sock) { VALUE str = rb_call_super(0, 0); rb_io_t *fptr = RFILE(sock)->fptr; union_sockaddr addr; socklen_t len = (socklen_t)sizeof addr; ID id; if (fptr && fptr->fd >= 0 && getsockname(fptr->fd, &addr.addr, &len) >= 0 && (id = rsock_intern_family(addr.addr.sa_family)) != 0) { VALUE family = rb_id2str(id); char hbuf[1024], pbuf[1024]; long slen = RSTRING_LEN(str); const char last = (slen > 1 && RSTRING_PTR(str)[slen - 1] == '>') ? (--slen, '>') : 0; str = rb_str_subseq(str, 0, slen); rb_str_cat_cstr(str, ", "); rb_str_append(str, family); if (!rb_getnameinfo(&addr.addr, len, hbuf, sizeof(hbuf), pbuf, sizeof(pbuf), NI_NUMERICHOST | NI_NUMERICSERV)) { rb_str_cat_cstr(str, ", "); rb_str_cat_cstr(str, hbuf); rb_str_cat_cstr(str, ", "); rb_str_cat_cstr(str, pbuf); } if (last) rb_str_cat(str, &last, 1); } return str; }
peeraddr([reverse_lookup]) → [address_family, port, hostname, numeric_address] 点击切换源代码
返回远程地址,以包含 address_family、port、hostname 和 numeric_address 的数组形式。它针对面向连接的套接字(如 TCPSocket
)定义。
如果 reverse_lookup
为 true
或 :hostname
,则使用反向查找从 numeric_address 获取 hostname。如果为 false
或 :numeric
,则 hostname 与 numeric_address 相同。如果为 nil
或省略,则遵循 ipsocket.do_not_reverse_lookup
。另请参阅 Socket.getaddrinfo
。
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; union_sockaddr 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, &addr.addr, &len) < 0) rb_sys_fail("getpeername(2)"); return rsock_ipaddr(&addr.addr, len, norevlookup); }
recvfrom(maxlen) → [mesg, ipaddr] 点击切换源代码
recvfrom(maxlen, flags) → [mesg, ipaddr]
接收消息并返回消息(以字符串形式)和消息的来源地址。
maxlen 是要接收的最大字节数。
flags 应为 Socket::MSG_* 常量的按位 OR。
ipaddr 与 IPSocket#{peeraddr,addr} 相同。
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); }