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v/vlib/net/tcp_test.v

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import net
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import time
const (
test_port = 45123
)
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fn handle_conn(_c net.TcpConn) {
mut c := _c
// arbitrary timeouts to ensure that it doesnt
// instantly throw its hands in the air and give up
c.set_read_timeout(10 * time.second)
c.set_write_timeout(10 * time.second)
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(l net.TcpListener) ? {
for {
new_conn := l.accept() or {
continue
}
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go handle_conn(new_conn)
}
return none
}
fn echo() ? {
mut c := net.dial_tcp('127.0.0.1:$test_port')?
defer {
c.close() or { }
}
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// arbitrary timeouts to ensure that it doesnt
// instantly throw its hands in the air and give up
c.set_read_timeout(10 * time.second)
c.set_write_timeout(10 * time.second)
data := 'Hello from vlib/net!'
c.write_str(data)?
mut buf := []byte{len: 4096}
read := c.read(mut buf)?
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assert read == data.len
for i := 0; i < read; i++ {
assert buf[i] == data[i]
}
println('Got "$buf.bytestr()"')
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return none
}
fn test_tcp() {
l := net.listen_tcp(test_port) or {
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panic(err)
}
go echo_server(l)
echo() or {
panic(err)
}
l.close() or { }
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}
fn main() {
test_tcp()
}