In Files

  • socket/socket.c

IPSocket

IPSocket is the parent of TCPSocket and UDPSocket and implements functionality common to them.

A number of APIs in IPSocket, Socket, and their descendants return an address as an array. The members of that array are:

  • address family: A string like “AF_INET” or “AF_INET6” if it is one of the commonly used families, the string “unknown:#” (where `#' is the address family number) if it is not one of the common ones. The strings map to the Socket::AF_* constants.

  • port: The port number.

  • name: Either the canonical name from looking the address up in the DNS, or the address in presentation format

  • address: The address in presentation format (a dotted decimal string for IPv4, a hex string for IPv6).

The address and port can be used directly to create sockets and to bind or connect them to the address.

Public Class Methods

getaddress(p1) click to toggle source
 
               static VALUE
ip_s_getaddress(obj, host)
    VALUE obj, host;
{
    struct sockaddr_storage addr;
    struct addrinfo *res = sock_addrinfo(host, Qnil, SOCK_STREAM, 0);

    /* just take the first one */
    memcpy(&addr, res->ai_addr, res->ai_addrlen);
    freeaddrinfo(res);

    return make_ipaddr((struct sockaddr*)&addr);
}
            

Public Instance Methods

addr() click to toggle source
 
               static VALUE
ip_addr(sock)
    VALUE sock;
{
    rb_io_t *fptr;
    struct sockaddr_storage addr;
    socklen_t len = sizeof addr;

    GetOpenFile(sock, fptr);

    if (getsockname(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
        rb_sys_fail("getsockname(2)");
    return ipaddr((struct sockaddr*)&addr);
}
            
peeraddr() click to toggle source
 
               static VALUE
ip_peeraddr(sock)
    VALUE sock;
{
    rb_io_t *fptr;
    struct sockaddr_storage addr;
    socklen_t len = sizeof addr;

    GetOpenFile(sock, fptr);

    if (getpeername(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
        rb_sys_fail("getpeername(2)");
    return ipaddr((struct sockaddr*)&addr);
}
            
recvfrom(*args) click to toggle source
 
               static VALUE
ip_recvfrom(argc, argv, sock)
    int argc;
    VALUE *argv;
    VALUE sock;
{
    return s_recvfrom(sock, argc, argv, RECV_IP);
}