Method: UDPSocket#send

Defined in:

udpsocket.c

#send(mesg, flags, host, port) ⇒ Object #send(mesg, flags, sockaddr_to) ⇒ Object #send(mesg, flags) ⇒ Object

Sends mesg via udpsocket.

flags should be a bitwise OR of Socket::MSG_* constants.

u1 = UDPSocket.new
u1.bind("127.0.0.1", 4913)

u2 = UDPSocket.new
u2.send "hi", 0, "127.0.0.1", 4913

mesg, addr = u1.recvfrom(10)
u1.send mesg, 0, addr[3], addr[1]

p u2.recv(100) #=> "hi"

# File 'udpsocket.c', line 199

static VALUE
udp_send(int argc, VALUE *argv, VALUE sock)
{
    VALUE flags, host, port;
    struct udp_send_arg arg;
    VALUE ret;

    if (argc == 2 || argc == 3) {
        return rsock_bsock_send(argc, argv, sock);
    }
    rb_scan_args(argc, argv, "4", &arg.sarg.mesg, &flags, &host, &port);

    StringValue(arg.sarg.mesg);
    GetOpenFile(sock, arg.fptr);
    arg.sarg.fd = arg.fptr->fd;
    arg.sarg.flags = NUM2INT(flags);
    arg.res = rsock_addrinfo(host, port, rsock_fd_family(arg.fptr->fd), SOCK_DGRAM, 0);
    ret = rb_ensure(udp_send_internal, (VALUE)&arg,
                    rsock_freeaddrinfo, (VALUE)arg.res);
    if (!ret) rsock_sys_fail_host_port("sendto(2)", host, port);
    return ret;
}