// vtest flaky: true // vtest retry: 8 import net import os const ( test_port = 45123 ) fn handle_conn(mut c net.TcpConn) { for { mut buf := []u8{len: 100, init: 0} read := c.read(mut buf) or { println('Server: connection dropped') return } c.write(buf[..read]) or { println('Server: connection dropped') return } } } fn one_shot_echo_server(mut l net.TcpListener, ch_started chan int) ? { eprintln('> one_shot_echo_server') ch_started <- 1 mut new_conn := l.accept() or { return error('could not accept') } eprintln(' > new_conn: $new_conn') handle_conn(mut new_conn) new_conn.close() or {} } fn echo(address string) ? { mut c := net.dial_tcp(address)? defer { c.close() or {} } println('local: ' + c.addr()?.str()) println(' peer: ' + c.peer_addr()?.str()) data := 'Hello from vlib/net!' c.write_string(data)? mut buf := []u8{len: 4096} read := c.read(mut buf) or { panic(err) } assert read == data.len for i := 0; i < read; i++ { assert buf[i] == data[i] } println('Got "$buf.bytestr()"') } fn test_tcp_ip6() { eprintln('\n>>> ${@FN}') address := 'localhost:$test_port' mut l := net.listen_tcp(.ip6, ':$test_port') or { panic(err) } dump(l) start_echo_server(mut l) echo(address) or { panic(err) } l.close() or {} // ensure there is at least one new socket created before the next test l = net.listen_tcp(.ip6, ':${test_port + 1}') or { panic(err) } } fn start_echo_server(mut l net.TcpListener) { ch_server_started := chan int{} go one_shot_echo_server(mut l, ch_server_started) _ := <-ch_server_started } fn test_tcp_ip() { eprintln('\n>>> ${@FN}') address := 'localhost:$test_port' mut l := net.listen_tcp(.ip, address) or { panic(err) } dump(l) start_echo_server(mut l) echo(address) or { panic(err) } l.close() or {} } fn test_tcp_unix() { eprintln('\n>>> ${@FN}') // TODO(emily): // whilst windows supposedly supports unix sockets // this doesnt work (wsaeopnotsupp at the call to bind()) $if !windows { address := os.real_path('tcp-test.sock') // address := 'tcp-test.sock' println('$address') mut l := net.listen_tcp(.unix, address) or { panic(err) } start_echo_server(mut l) echo(address) or { panic(err) } l.close() or {} os.rm(address) or { panic('failed to remove socket file') } } } fn testsuite_end() { eprintln('\ndone') } fn test_bind() ? { $if !network ? { return } mut conn := net.dial_tcp_with_bind('vlang.io:80', '127.0.0.1:0')? conn.close()? }