45 lines
1.1 KiB
V
45 lines
1.1 KiB
V
import os
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import os.cmdline
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import net
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fn main() {
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println('Usage: net_udp_server_and_client [-l] [-p 5000]')
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println(' -l - act as a server and listen')
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println(' -p XXXX - custom port number')
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println('------------------------------------------')
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is_server := '-l' in os.args
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port := cmdline.option(os.args, '-p', '40001').int()
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mut buf := []u8{len: 100}
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if is_server {
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println('UDP echo server, listening for udp packets on port: $port')
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mut c := net.listen_udp(':$port')?
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for {
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read, addr := c.read(mut buf) or { continue }
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println('received $read bytes from $addr')
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c.write_to(addr, buf[..read]) or {
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println('Server: connection dropped')
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continue
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}
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}
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} else {
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println('UDP client, sending packets to port: ${port}.\nType `exit` to exit.')
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mut c := net.dial_udp('localhost:$port')?
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for {
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mut line := os.input('client > ')
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match line {
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'' {
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line = '\n'
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}
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'exit' {
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println('goodbye.')
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exit(0)
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}
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else {}
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}
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c.write_string(line)?
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read, _ := c.read(mut buf)?
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println('server : ' + buf[0..read].bytestr())
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}
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}
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}
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