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Technical Support
On-Line Manuals
RL-ARM User's Guide
RL-RTX
RL-FlashFS
RL-TCPnet
TCP Socket
Opening TCP Connection
TCP Active Open
TCP Passive Open
Sending TCP Data
Example for Sending Data
Multiple TCP Connections
UDP Socket
Opening UDP Connection
Sending UDP Data
When DHCP Enabled
When ARP Cache Empty
Example for Sending Data
IP Multicasting
Multiple UDP Connections
Configuring RL-TCPnet
Static Configuration
System Definitions
Ethernet Network Interface
PPP Network Interface
SLIP Network Interface
UDP Socket
TCP Socket
BSD Socket
HTTP Server
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Localhost
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FCARM File Converter
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Continuous Screen Update
TFTP Server
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TFTP Client
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Supported Commands
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MIB Database
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DNS Resolver
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Device Drivers
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Function Overview
BSD Routines
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UDP Routines
RL-CAN
RL-USB
Example Programs
Library Reference
Appendix
UDP Routines
| Routine | Description |
|---|---|
| udp_get_socket | Allocates a UDP socket. |
| udp_open | Opens a UDP socket for communication. |
| udp_close | Closes a UDP socket. |
| udp_release_socket | Releases (deallocates) a UDP socket. |
| udp_get_buf | Allocates memory for a UDP send buffer. |
| udp_send | Sends a UDP packet. |
| udp_mcast_ttl | Sets the Time to Live (TTL) for the outgoing multicast messages of a socket. |
note
- UDP Interface routines exchange data over the UDP Socket. It is used when data security is not the primary option, because UDP packets do not require an acknowledge and can possibly be lost.
- The UDP routines are not reentrant.
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