1Socket6(3) User Contributed Perl Documentation Socket6(3)
2
6 Socket6 - IPv6 related part of the C socket.h defines and structure
7 manipulators
8
10 use Socket;
11 use Socket6;
12 @res = getaddrinfo('hishost.com', 'daytime', AF_UNSPEC, SOCK_STREAM);
14 $family = -1;
15 while (scalar(@res) >= 5) {
16 ($family, $socktype, $proto, $saddr, $canonname, @res) = @res;
17 ($host, $port) = getnameinfo($saddr, NI_NUMERICHOST | NI_NUMERICSERV);
19 print STDERR "Trying to connect to $host port $port...\n";
20 socket(Socket_Handle, $family, $socktype, $proto) || next;
22 connect(Socket_Handle, $saddr) && last;
23 close(Socket_Handle);
25 $family = -1;
26 }
27 if ($family != -1) {
29 print STDERR "connected to $host port $port\n";
30 } else {
31 die "connect attempt failed\n";
32 }
33
35 This module provides glue routines to the various IPv6 functions.
36 If you use the Socket6 module, be sure to specify "use Socket" as well
38 as "use Socket6".
39 Functions supplied are:
41 inet_pton FAMILY, TEXT_ADDRESS
43 This function takes an IP address in presentation (or string) format
44 and converts it into numeric (or binary) format.
45 The type of IP address conversion (IPv4 versus IPv6) is controlled
46 by the FAMILY argument.
47 inet_ntop FAMILY, BINARY_ADDRESS
49 This function takes an IP address in numeric (or binary) format
50 and converts it into presentation (or string) format
51 The type of IP address conversion (IPv4 versus IPv6) is controlled
52 by the FAMILY argument.
53 pack_sockaddr_in6 PORT, ADDR
55 This function takes two arguments: a port number, and a 16-octet
56 IPv6 address structure (as returned by inet_pton()).
57 It returns the sockaddr_in6 structure with these arguments packed
58 into their correct fields, as well as the AF_INET6 family.
59 The other fields are not set and their values should not be relied upon.
60 pack_sockaddr_in6_all PORT, FLOWINFO, ADDR, SCOPEID
62 This function takes four arguments: a port number, a 16-octet
63 IPv6 address structure (as returned by inet_pton), any
64 special flow information, and any specific scope information.
65 It returns a complete sockaddr_in6 structure with these arguments packed
66 into their correct fields, as well as the AF_INET6 family.
67 unpack_sockaddr_in6 NAME
69 This function takes a sockaddr_in6 structure (as returned by
70 pack_sockaddr_in6()) and returns a list of two elements:
71 the port number and the 16-octet IP address.
72 This function will croak if it determines it has not been
73 passed an IPv6 structure.
74 unpack_sockaddr_in6_all NAME
76 This function takes a sockaddr_in6 structure (as returned by
77 pack_sockaddr_in6()) and returns a list of four elements:
78 the port number, the flow information, the 16-octet IP address,
79 and the scope information.
80 This function will croak if it determines it has not been
81 passed an IPv6 structure.
82 gethostbyname2 HOSTNAME, FAMILY
84 This function doesn't supported.
85 getaddrinfo NODENAME, SERVICENAME, [FAMILY, SOCKTYPE, PROTOCOL, FLAGS]
87 This function converts node names to addresses and service names
88 to port numbers.
89 If the NODENAME argument is not a false value,
90 then a nodename to address lookup is performed;
91 otherwise a service name to port number lookup is performed.
92 At least one of NODENAME and SERVICENAME must have a true value.
93 If the lookup is successful, a list consisting of multiples of
95 five elements is returned.
96 Each group of five elements consists of the address family,
97 socket type, protocol, 16-octet IP address, and the canonical
98 name (undef if the node name passed is already the canonical name).
99 The arguments FAMILY, SOCKTYPE, PROTOCOL, and FLAGS are all optional.
101 This function will croak if it determines it has not been
103 passed an IPv6 structure.
104 If the lookup is unsuccessful, the function returns a single scalar.
106 This will contain the string version of that error in string context,
107 and the numeric value in numeric context.
108 getnameinfo NAME, [FLAGS]
110 This function takes a socket address structure. If successful, it returns
111 two strings containing the node name and service name.
112 The optional FLAGS argument controls what kind of lookup is performed.
114 If the lookup is unsuccessful, the function returns a single scalar.
116 This will contain the string version of that error in string context,
117 and the numeric value in numeric context.
118 getipnodebyname HOST, [FAMILY, FLAGS]
120 This function takes either a node name or an IP address string
121 and performs a lookup on that name (or conversion of the string).
122 It returns a list of five elements: the canonical host name,
123 the address family, the length in octets of the IP addresses
124 returned, a reference to a list of IP address structures, and
125 a reference to a list of aliases for the host name.
126 The arguments FAMILY and FLAGS are optional.
128 Note: This function does not handle IPv6 scope identifiers,
129 and should be used with care.
130 And, this function was deprecated in RFC3493.
131 The getnameinfo function should be used instead.
132 getipnodebyaddr FAMILY, ADDRESS
134 This function takes an IP address family and an IP address structure
135 and performs a reverse lookup on that address.
136 It returns a list of five elements: the canonical host name,
137 the address family, the length in octets of the IP addresses
138 returned, a reference to a list of IP address structures, and
139 a reference to a list of aliases for the host name.
140 Note: This function does not handle IPv6 scope identifiers,
142 and should be used with care.
143 And, this function was deprecated in RFC3493.
144 The getaddrinfo function should be used instead.
145 gai_strerror ERROR_NUMBER
147 This function returns a string corresponding to the error number
148 passed in as an argument.
149 in6addr_any
151 This function returns the 16-octet wildcard address.
152 in6addr_loopback
154 This function returns the 16-octet loopback address.
155perl v5.34.0 2022-01-21 Socket6(3)