InternetHost

Class for resolving IPv4 addresses.

Consider using getAddress, parseAddress and Address methods instead of using this class directly.

@safe

class InternetHost {

string name;

string[] aliases;

uint[] addrList;

bool getHostByName(const(char)[] name);

bool getHostByAddr(uint addr);

bool getHostByAddr(const(char)[] addr);

}

Members

Functions

getHostByAddr bool getHostByAddr(uint addr): Resolve IPv4 address number.
getHostByAddr bool getHostByAddr(const(char)[] addr): Same as previous, but addr is an IPv4 address string in the dotted-decimal form a.b.c.d.
getHostByName bool getHostByName(const(char)[] name): Resolve host name.

Variables

addrList uint[] addrList;
aliases string[] aliases;: These members are populated when one of the following functions are called successfully:
name string name;: These members are populated when one of the following functions are called successfully:

Examples

InternetHost ih = new InternetHost;

ih.getHostByAddr(0x7F_00_00_01);
assert(ih.addrList[0] == 0x7F_00_00_01);
ih.getHostByAddr("127.0.0.1");
assert(ih.addrList[0] == 0x7F_00_00_01);

if (!ih.getHostByName("www.digitalmars.com"))
    return;             // don't fail if not connected to internet

assert(ih.addrList.length);
InternetAddress ia = new InternetAddress(ih.addrList[0], InternetAddress.PORT_ANY);
assert(ih.name == "www.digitalmars.com" || ih.name == "digitalmars.com",
        ih.name);

/* The following assert randomly fails in the test suite.
 * https://issues.dlang.org/show_bug.cgi?id=22791
 * So just ignore it when it fails.
 */
//assert(ih.getHostByAddr(ih.addrList[0]));
if (ih.getHostByAddr(ih.addrList[0]))
{
    string getHostNameFromInt = ih.name.dup;

    // This randomly fails in the compiler test suite
    //assert(ih.getHostByAddr(ia.toAddrString()));

    if (ih.getHostByAddr(ia.toAddrString()))
    {
        string getHostNameFromStr = ih.name.dup;
        assert(getHostNameFromInt == getHostNameFromStr);
    }
}

InternetHost

Members

Functions

Variables

Examples

Meta

Source