method

timestamp

v1_9_2_180 - Show latest stable - 0 notes - Class: AncillaryData

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1_8_7_72
1_8_7_330
1_9_1_378
1_9_2_180 (0)
1_9_3_125
1_9_3_392
2_1_10
2_2_9
2_4_6
2_5_5
2_6_3
What's this?

timestamp() public

returns the timestamp as a time object.

ancillarydata should be one of following type:

SOL_SOCKET/SCM_TIMESTAMP (micro second) GNU/Linux, FreeBSD, NetBSD, OpenBSD, Solaris, MacOS X
SOL_SOCKET/SCM_TIMESTAMPNS (nano second) GNU/Linux
SOL_SOCKET/SCM_BINTIME (2**(-64) second) FreeBSD

Addrinfo.udp("127.0.0.1", 0).bind {|s1|
  Addrinfo.udp("127.0.0.1", 0).bind {|s2|
    s1.setsockopt(:SOCKET, :TIMESTAMP, true)
    s2.send "a", 0, s1.local_address
    ctl = s1.recvmsg.last
    p ctl    #=> #<Socket::AncillaryData: INET SOCKET TIMESTAMP 2009-02-24 17:35:46.775581>
    t = ctl.timestamp
    p t      #=> 2009-02-24 17:35:46 +0900
    p t.usec #=> 775581
    p t.nsec #=> 775581000
  }
}

Show source

static VALUE
ancillary_timestamp(VALUE self)
{
    int level, type;
    VALUE data;
    VALUE result = Qnil;

    level = ancillary_level(self);
    type = ancillary_type(self);
    data = ancillary_data(self);

# ifdef SCM_TIMESTAMP
    if (level == SOL_SOCKET && type == SCM_TIMESTAMP &&
        RSTRING_LEN(data) == sizeof(struct timeval)) {
        struct timeval tv;
        memcpy((char*)&tv, RSTRING_PTR(data), sizeof(tv));
        result = rb_time_new(tv.tv_sec, tv.tv_usec);
    }
# endif

# ifdef SCM_TIMESTAMPNS
    if (level == SOL_SOCKET && type == SCM_TIMESTAMPNS &&
        RSTRING_LEN(data) == sizeof(struct timespec)) {
        struct timespec ts;
        memcpy((char*)&ts, RSTRING_PTR(data), sizeof(ts));
        result = rb_time_nano_new(ts.tv_sec, ts.tv_nsec);
    }
# endif

#define add(x,y) (rb_funcall((x), '+', 1, (y)))
#define mul(x,y) (rb_funcall((x), '*', 1, (y)))
#define quo(x,y) (rb_funcall((x), rb_intern("quo"), 1, (y)))

# ifdef SCM_BINTIME
    if (level == SOL_SOCKET && type == SCM_BINTIME &&
        RSTRING_LEN(data) == sizeof(struct bintime)) {
        struct bintime bt;
        VALUE d, timev;
        memcpy((char*)&bt, RSTRING_PTR(data), sizeof(bt));
        d = ULL2NUM(0x100000000UL);
        d = mul(d,d);
        timev = add(TIMET2NUM(bt.sec), quo(ULL2NUM(bt.frac), d));
        result = rb_time_num_new(timev, Qnil);
    }
# endif

    if (result == Qnil)
        rb_raise(rb_eTypeError, "timestamp ancillary data expected");

    return result;
}

timestamp

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