39
3. Destination IP & port : 192.168.1.200:6001
<ESC> Back, <ENTER> Refresh
----->
Figure 4-11. Set up parameters for UDP tunneling mode
4.1.6 UDP server mode operations
While UDP tunneling mode allows only one remote host for UDP communications, UDP server mode
allows any remote host to access the HelloDevice Pro Series. In this mode, the HelloDevice Pro
Series gets the information on the remote host from the latest incoming datagram information and
keeps this information for
inactivity timeout
management, which is configured in
Serial
Configuration - Options
menu (see 4.4.1 for detail).
1) Operations
In UDP server mode, a remote host should initiate UDP data communication. If there is any incoming
UDP datagram to the HelloDevice Pro Series, it will make a virtual connection with the remote host for
inactivity timeout
duration. Before the
inactivity timeout
value expires, the HelloDevice Pro Series
transfers the UDP data to the serial port, and send back the data from the serial port to the latest
remote host who sent the UDP datagram. Virtual connection timeout will be reset to
inactivity timeout
value whenever there is any data transfer between remote host and the serial device. If other remote
hosts send UDP datagrams while a virtual connection is established, the UDP datagram will be
discarded. If there is no data transfer during
inactivity timeout
, the virtual connection will be closed and
other remote hosts can access the HelloDevice Pro Series from then on.
2) Parameters
Local port
The concept is the same as that of TCP communication. See
TCP Server mode operations
in
the section 4.1.2 for details.
---------------------------------------------------------------------------
serial configuration -->port#1 --> TCP/IP
---------------------------------------------------------------------------
Select menu
1. Host mode : UDP server
2. Local port : 6000
<ESC> Back, <ENTER> Refresh
----->
Figure 4-12. Set up parameters for UDP server mode