62 lines
1.6 KiB
V
62 lines
1.6 KiB
V
import net
|
|
import time
|
|
|
|
fn echo_server(mut c net.UdpConn) {
|
|
mut count := 0
|
|
for {
|
|
eprintln('> echo_server loop count: $count')
|
|
mut buf := []u8{len: 100}
|
|
read, addr := c.read(mut buf) or { continue }
|
|
eprintln('Server got addr $addr, read: $read | buf: $buf')
|
|
c.write_to(addr, buf[..read]) or {
|
|
println('Server: connection dropped')
|
|
return
|
|
}
|
|
count++
|
|
// Normally, after responding, the test will end, but there are sometimes cases,
|
|
// when the echo_server continued looping, printing messages constantly.
|
|
// The sleep here, is a small precaution against spamming the CI with log messages,
|
|
// when there are network problems, and it allows easier root cause diagnostic, when
|
|
// they do happen:
|
|
time.sleep(1000 * time.millisecond)
|
|
}
|
|
}
|
|
|
|
const server_addr = '127.0.0.1:40003'
|
|
|
|
fn echo() ? {
|
|
mut c := net.dial_udp(server_addr) or { panic('could not net.dial_udp: $err') }
|
|
defer {
|
|
c.close() or {}
|
|
}
|
|
data := 'Hello from vlib/net!'
|
|
|
|
c.write_string(data) or { panic('could not write_string: $err') }
|
|
|
|
mut buf := []u8{len: 100, init: 0}
|
|
read, addr := c.read(mut buf) or { panic('could not read: $err') }
|
|
|
|
assert read == data.len
|
|
println('Got address $addr')
|
|
// Can't test this here because loopback addresses
|
|
// are mapped to other addresses
|
|
// assert addr.str() == '127.0.0.1:30001'
|
|
|
|
for i := 0; i < read; i++ {
|
|
assert buf[i] == data[i]
|
|
}
|
|
|
|
println('Got "$buf.bytestr()"')
|
|
|
|
c.close()?
|
|
}
|
|
|
|
fn test_udp() {
|
|
mut l := net.listen_udp(server_addr) or { panic('could not listen_udp: $err') }
|
|
|
|
go echo_server(mut l)
|
|
echo() or { panic('could not echo: $err') }
|
|
|
|
l.close() or {}
|
|
}
|