v/vlib/net/tcp_test.v

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import net
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const (
test_port = 45123
)
fn handle_conn(mut c net.TcpConn) {
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for {
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mut buf := []byte{len: 100, init: 0}
read := c.read(mut buf) or {
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println('Server: connection dropped')
return
}
c.write(buf[..read]) or {
println('Server: connection dropped')
return
}
}
}
fn echo_server(mut l net.TcpListener) ? {
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for {
mut new_conn := l.accept() or { continue }
go handle_conn(mut new_conn)
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}
return none
}
fn echo() ? {
mut c := net.dial_tcp('127.0.0.1:$test_port') ?
defer {
c.close() or { }
}
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data := 'Hello from vlib/net!'
c.write_string(data) ?
mut buf := []byte{len: 4096}
read := c.read(mut buf) ?
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assert read == data.len
for i := 0; i < read; i++ {
assert buf[i] == data[i]
}
println('Got "$buf.bytestr()"')
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return none
}
fn test_tcp() {
mut l := net.listen_tcp(test_port) or { panic(err) }
go echo_server(mut l)
echo() or { panic(err) }
l.close() or { }
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}