75 lines
1.3 KiB
V
75 lines
1.3 KiB
V
import net
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import time
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fn echo_server(_c net.UdpConn) {
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mut c := _c
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// arbitrary timeouts to ensure that it doesnt
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// instantly throw its hands in the air and give up
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c.set_read_timeout(10 * time.second)
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c.set_write_timeout(10 * time.second)
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for {
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mut buf := []byte{ len: 100, init: 0 }
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read, addr := c.read(mut buf) or {
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continue
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}
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c.write_to(addr, buf[..read]) or {
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println('Server: connection dropped')
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return
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}
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}
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}
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fn echo() ? {
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mut c := net.dial_udp('127.0.0.1:40003', '127.0.0.1:40001')?
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defer { c.close() or { } }
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// arbitrary timeouts to ensure that it doesnt
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// instantly throw its hands in the air and give up
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c.set_read_timeout(10 * time.second)
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c.set_write_timeout(10 * time.second)
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data := 'Hello from vlib/net!'
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c.write_str(data)?
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mut buf := []byte{ len: 100, init: 0 }
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read, addr := c.read(mut buf)?
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assert read == data.len
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println('Got address $addr')
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// Can't test this here because loopback addresses
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// are mapped to other addresses
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// assert addr.str() == '127.0.0.1:30001'
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for i := 0; i < read; i++ {
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assert buf[i] == data[i]
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}
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println('Got "${buf.bytestr()}"')
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c.close()?
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return none
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}
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fn test_udp() {
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l := net.listen_udp(40001) or {
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println(err)
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assert false
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panic('')
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}
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go echo_server(l)
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echo() or {
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println(err)
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assert false
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}
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l.close() or { }
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}
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fn main() {
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test_udp()
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}
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