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|
import net
fn echo_server(mut c net.UdpConn) {
for {
mut buf := []byte{len: 100, init: 0}
read, addr := c.read(mut buf) or { continue }
println('Server got addr $addr')
c.write_to(addr, buf[..read]) or {
println('Server: connection dropped')
return
}
}
}
const (
local_addr = ':40003'
remote_addr = 'localhost:40003'
)
fn echo() ? {
mut c := net.dial_udp(remote_addr) ?
defer {
c.close() or {}
}
data := 'Hello from vlib/net!'
c.write_string(data) ?
mut buf := []byte{len: 100, init: 0}
read, addr := c.read(mut buf) ?
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(local_addr) or {
println(err)
assert false
panic('')
}
go echo_server(mut l)
echo() or {
println(err)
assert false
}
l.close() or {}
}
fn main() {
test_udp()
}
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