The UDP API is for sending and receiving data with the UDP protocol.

Using UDP to send or receive data involves the following steps:

1. Create a UDP connection by calling vm_udp_create(), this will register a callback function.
2. Implement the callback function in order to handle UDP events.

• Start writing data with vm_udp_send after receiving the write event VM_UDP_EVT_WRITE
• Start reading data with vm_udp_receive after receiving the read event VM_UDP_EVENT_READ
• When the connection breaks, a VM_UDP_EVENT_PIPE_BROKEN event is received.
• VM_UDP_EVT_PIPE_CLOSED is received when the connection is closed.

3. Call vm_udp_close() in order to close the connection.

Currently the API only supports the asynchronous data transfer for UDP.

Network Protocol