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Chapter 15 – Raw TCP/UDP Socket Interface to the Serial Device

Command Line Interface and Application Examples for Multi-Tech Systems, Inc. IP Modules (S000368F) 146

Scenario 1 – Setting up UDP Sessions and IP

Module Acting as Client

Create a UDP socket on the IP Module and connect to a UDP socket on a remote host. Once created, the socket can

be used to send data to and receive data from only this particular remote host.

Command

socket udp <remote_ip> <remote_port> [local_port]

<remote_ip> and <remote_port are ip address of the machine running a UDP socket and port number to which

the socket is bound to respectively.

Example

To connect to the UDP socket on host A from IP Module i.

Create UDP socket (local port is optional)

#socket udp 192.168.1.120 2000

<4>

You can use the returned socket handle top send and receive data

#socket send -d $ 4

Enter data- ('$' to terminate)

--- 5 bytes sent ---

#socket recv 4

hello

---5 bytes received---

Multiple UDP Sessions

Since a UDP socket can be used to connect to only a single remote host, for every new connection a new socket has

to be created using the command socket udp <remote_ip> <remote_port>.

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Multitech MultiConnect Adapter Guía de usuario Pagina 146