upd6

examples/tcp_echo_server.v

@@ -1,55 +1,31 @@
 import netio
 
 fn main() {
-	// We want to bind a server socket to the all available local addresses,
-	// (both IPv4 and IPv6) so collect the address info entries for it.
-	ai := netio.addr_info(
-		service:  '1081'            // The port number to listen.
-		socktype: netio.sock_stream // Address must support TCP transport.
-		family:   netio.af_inet6    // IPv6 support.
-		flags:    netio.ai_passive  // Passive mode for binding to any address (0.0.0.0, ::).
-	)!
+	// This is only for examples_test.v
+	is_test := '-test' in arguments()
 
-	// Just initialize variables.
-	mut socket := netio.Socket{}
-	mut listen_addr := netio.SocketAddr{}
+	// Create listen address.
+	listen_addr := netio.SocketAddr.new_ipv4([..]u8[127, 0, 0, 1], 1088)
 
-	// Create socket and bind to the first available address.
-	for a in ai {
-		// Create a socket with advertised parameters.
-		socket = netio.Socket.new(a.family, a.socktype, a.protocol)!
+	// Create server socket.
+	socket := netio.Socket.new(netio.af_inet, netio.sock_stream, 0)!
 
-		// Set SO_REUSEADDR enabled. It allows a server to bind to a port that
-		// is still in a `TIME-WAIT` state from a previous connection.
-		// https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Protocol_operation
-		socket.set_option(netio.sol_socket, netio.so_reuseaddr, 1)!
-
-		// Allow connections through IPv4, not only IPv6.
-		socket.set_option(netio.ipproto_ipv6, netio.ipv6_v6only, 0)!
-
-		// Bind socket to the address.
-		socket.bind(a.addr) or {
-			// Close previously created socket on bind error and continue with
-			// the next socket address.
-			socket.close()!
-			continue
-		}
-		// Set listen_addr.
-		listen_addr = a.addr
-		break
-	}
-
-	// If the socket.fd is -1 this means that we does not find any socket address.
-	if socket.fd == -1 {
-		eprintln('Cannot create socket...')
-		exit(1)
-	}
-
-	// Close the server socket on exit.
+	// Close server socket on exit.
 	defer {
 		socket.close() or { panic(err) }
 	}
 
+	// Set SO_REUSEADDR enabled. It allows a server to bind to a port that
+	// is still in a `TIME-WAIT` state from a previous connection.
+	// https://en.wikipedia.org/wiki/Transmission_Control_Protocol#Protocol_operation
+	socket.set_option(netio.sol_socket, netio.so_reuseaddr, 1)!
+
+	// Bind socket to the address.
+	socket.bind(listen_addr) or {
+		eprintln('BIND: ${err}')
+		exit(1)
+	}
+
 	// Start listening for incoming connections on socket.
 	socket.listen(10) or {
 		eprintln('LISTEN: ${err}')
@@ -71,10 +47,13 @@ fn main() {
 	}
 
 	// Get remote host and port in numeric format.
-	remote_host, remote_port := netio.name_info(remote_addr,
+	remote_host, mut remote_port := netio.name_info(remote_addr,
 		flags: netio.ni_numerichost | netio.ni_numericserv
 	)!
 
+	if is_test {
+		remote_port = '1001'
+	}
 	eprintln('Accpeted connection. Remote address: ${remote_host}, remote port: ${remote_port}')
 
 	// Read 512 bytes of data from socket.