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Function std.socket.getAddressInfo

Provides protocol-independent translation from host names to socket addresses. If advanced functionality is not required, consider using getAddress for compatibility with older systems.

Prototype

AddressInfo[] getAddressInfo(T...)(
  char[] node,
  T options
) @trusted;

Returns

Array with one AddressInfo per socket address.

Throws

SocketOSException on failure, or SocketFeatureException if this functionality is not available on the current system.

Parameters

NameDescription
node string containing host name or numeric address
options optional additional parameters, identified by type:

Example

// Roundtrip DNS resolution
auto results = getAddressInfo("www.digitalmars.com");
assert(results[0].address.toHostNameString() ==
    "digitalmars.com");

// Canonical name
results = getAddressInfo("www.digitalmars.com",
    AddressInfoFlags.CANONNAME);
assert(results[0].canonicalName == "digitalmars.com");

// IPv6 resolution
results = getAddressInfo("ipv6.google.com");
assert(results[0].family == AddressFamily.INET6);

// Multihomed resolution
results = getAddressInfo("google.com");
assert(results.length > 1);

// Parsing IPv4
results = getAddressInfo("127.0.0.1",
    AddressInfoFlags.NUMERICHOST);
assert(results.length && results[0].family ==
    AddressFamily.INET);

// Parsing IPv6
results = getAddressInfo("::1",
    AddressInfoFlags.NUMERICHOST);
assert(results.length && results[0].family ==
    AddressFamily.INET6);

Authors

Christopher E. Miller, David Nadlinger, Vladimir Panteleev

License

Boost License 1.0.

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